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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

NPP Tropical Forest: Darien, Panama  

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Darien, Panama, 1967-1968 Darien, Panama, 1967-1968 [PHOTOGRAPH] Photograph: Tropical moist forest near Darien (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Golley, F. B. 1998. NPP Tropical Forest: Darien, Panama, 1967-1968. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of different vegetation components and soil for a transitional moist/dry tropical forest were determined in 1967-68 at Darien Province, Panama. NPP was not estimated. Situated about 160 km ESE of Panama City, close to the town of Santa Fe, the Darien study site consisted of two plots, about 8 km apart, one of

2

NPP Tropical Forest: Atherton, Australia  

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Atherton, Australia, 1974-1985 Atherton, Australia, 1974-1985 [PHOTOGRAPH] Photograph: View across the forest canopy near Atherton (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Stocker, G. C. 2001. NPP Tropical Forest: Atherton, Australia, 1974-1985. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Litterfall was determined over 3-4 years (1974/5-1978) for two tropical rainforest sites and for 5 years (1980-1985) for a third study site near Atherton, Queensland, in northeast Australia. Although net primary production (NPP) was not determined, the extensive site description data and the rarity of measurements on tropical forests south of the Equator

3

NPP Tropical Forest: Chamela, Mexico  

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Chamela, Mexico, 1982-1995 Chamela, Mexico, 1982-1995 [PHOTOGRAPH] Photograph: Litter trap and throughfall collector in the Chamela forest (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Maass, M., and A. Martinez-Yrizar. 2001. NPP Tropical Forest: Chamela, Mexico, 1982-1995. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Net primary productivity (NPP) of a tropical dry deciduous forest was estimated, based on the integration of ecosystem data obtained in various years between 1982 and 1995, at the Chamela Biological Station of the National Autonomous University of Mexico (UNAM). The Biosphere Reserve Chamela-Cuixmala, Jalisco, is situated near the

4

NPP Tropical Forest: Kade, Ghana  

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Kade, Ghana, 1957-1972 Kade, Ghana, 1957-1972 [PHOTOGRAPH] Photograph: Forest after clearing of secondary growth at the Kade site (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Nye, P. H., and D. J. Greenland. 1998. NPP Tropical Forest: Kade, Ghana, 1957-1972. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of different vegetation components and soil for a secondary tropical forest were determined in the late 1950s at the Kade Agricultural Research Station of the former University College, Ghana. Net primary production (NPP) was estimated on the basis of standing biomass accumulation and litter fall. Later studies on litter and wood fall and

5

NPP Tropical Forest: Pasoh, Malaysia  

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Pasoh, Malaysia, 1971-1973 Pasoh, Malaysia, 1971-1973 [PHOTOGRAPH] Photograph: Profile of the Pasoh Forest (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Kira, T., N. Manokaran, and S. Appanah. 1998. NPP Tropical Forest: Pasoh, Malaysia, 1971-1973. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and productivity of a lowland tropical forest in the Pasoh Forest Reserve, Malaysia, were determined from 1971 to 1973, under the auspices of the International Biological Programme. From 1970 to 1978, intensive research on lowland rain forest ecology and dynamics took place under a joint research project between the University of Malaya (UM) and the

6

NPP Tropical Forest: La Selva, Costa Rica  

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view a series of images from this site). Data Citation Cite this data set as follows: Clark, D. A. 1998. NPP Tropical Forest: La Selva, Costa Rica, 1969-1985. Data set. Available...

7

NPP Tropical Forest: Marafunga, Papua New Guinea  

NLE Websites -- All DOE Office Websites (Extended Search)

Marafunga, Papua New Guinea, 1970-1971 Marafunga, Papua New Guinea, 1970-1971 [PHOTOGRAPH] Photograph: Profile of tropical forest at Marafunga (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Edwards, P. J., and P. J. Grubb. 1999. NPP Tropical Forest: Marafunga, Papua New Guinea, 1970-1971. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of different vegetation components and soil for a lower montane secondary rain forest were determined in 1970-71 at Marafunga in the highlands of Papua New Guinea. The only component of net primary production (NPP) determined at Marafunga was litterfall, although

8

NPP Tropical Forest: Luquillo, Puerto Rico  

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Luquillo, Puerto Rico, 1963-1994 Luquillo, Puerto Rico, 1963-1994 Data Citation Cite this data set as follows: Lugo, A. E., F. Scatena, and C. F. Jordan. 1999. NPP Tropical Forest: Luquillo, Puerto Rico, 1963-1994. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of lower montane tropical forest has been determined at various study sites within the Luquillo Experimental Forest from 1963 to the present. The Luquillo Experimental Forest is situated in the Luquillo Mountains of eastern Puerto Rico (18.32 N 65.82 W), about 35 km east-southeast of San Juan, and operates under the auspices of the International Institute of Tropical Forestry, Rio Pedras, Puerto Rico. Its total area is about 11,000

9

NPP Tropical Forest: Manaus, Brazil [Amazonas]  

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Manaus, Brazil, 1963-1990 Manaus, Brazil, 1963-1990 Data Citation Cite this data set as follows: Piedade, M. T. F., and W. J. Junk. 2001. NPP Tropical Forest: Manaus, Brazil, 1963-1990. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and components of productivity for several types of tropical forest were determined for a number of study sites around Manaus, Brazil, from 1963 to the present. The study sites include several (0.2 ha) stands of terra firme (dry land) forest at " 64" to the northeast of Manaus, towards Itacoatiara (approximately 3.0 S 59.7 W, near the " Egler" Reserve), riverine forest in the 10 km x 10 km " Reserve" (2.95 S 59.95 W, 26 km

10

NPP Tropical Forest: Khao Chong, Thailand  

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Khao Chong, Thailand, 1962-1965 Khao Chong, Thailand, 1962-1965 [PHOTOGRAPH] Photograph: Eye-level view of forest interior at Khao Chong (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Kira, T. 1998. NPP Tropical Forest: Khao Chong, Thailand, 1962-1965. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a tropical rain forest was determined at the Khao Chong study site, under the auspices of the Joint Thai-Japanese Biological Expedition to South-East Asia. Biomass increment within a 40 m x 40 m study area for all trees greater than 4.5 cm dbh (diameter at breast height, 130 cm) was monitored between

11

NPP Tropical Forest: Magdalena Valley, Colombia  

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Magdalena Valley, Colombia, 1970-1971 Magdalena Valley, Colombia, 1970-1971 Data Citation Cite this data set as follows: Folster, H. 1999. NPP Tropical Forest: Magdalena Valley, Colombia, 1970-1971. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass, litterfall, and nutrient content of above-ground vegetation and soil were determined for a tropical seasonal evergreen forest at Magdalena Valley, Colombia, during an 18-month period in 1970 and 1971. The study was sponsored by the German Research Foundation. Of primary interest were biomass and nutrient dynamics of a forest stand that had developed atop a perched water table on a typical valley terrace. Perched water tables give rise to pseudogley soils with low pH, prolonged

12

NPP Tropical Forest: Barro Colorado, Panama  

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Barro Colorado, Panama, 1969-1990 PHOTOGRAPH Photograph: Buttressed tree at the Barro Colorado tropical forest site (click on the photo to view a series of images from this...

13

NPP Tropical Forest: San Carlos De Rio Negro, Venezuela  

NLE Websites -- All DOE Office Websites (Extended Search)

San Carlos De Rio Negro, Venezuela, 1975-1984 San Carlos De Rio Negro, Venezuela, 1975-1984 [PHOTOGRAPH] Photograph: Cutting an experimental plot at San Carlos (click on the photo to view a series of images and a diagram of this site) Data Citation Cite this data set as follows: Jordan, C. F., E. Cuevas, and E. Medina. 1999. NPP Tropical Forest: San Carlos de Rio Negro, Venezuela, 1975-1984. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of tropical forest was determined for a number of vegetation-soil associations at the San Carlos de Rio Negro study site, under the auspices of an international UNESCO Man and the Biosphere (MAB) project. The San Carlos study site (1.93 N 67.05 W) is situated 4 km east of the

14

ORNL DAAC NPP TROPICAL FOREST: MAUI, HAWAII, U.S.A., 1996-1997  

NLE Websites -- All DOE Office Websites (Extended Search)

TROPICAL FOREST: MAUI, HAWAII, U.S.A., 1996-1997 TROPICAL FOREST: MAUI, HAWAII, U.S.A., 1996-1997 Get Data Summary: The objective of this study was to quantify net primary productivity as a function of rainfall in mesic to wet montane rainforests in Maui, Hawaii. The Maui Moisture Gradient is a sequence of six sites located on the island of Maui that range from 2200-mm to 5050-mm mean annual rainfall, while temperature and all other state factors (parent material, substrate age, organisms, and topography) that control NPP remain relatively constant. This data set contains annual estimates of net primary productivity made in 1996 and 1997. The data provided are estimates of the accumulation of biomass by plants for a given year, or net primary productivity (NPP). Estimates are given for aboveground and belowground productivity, and the sum as net primary

15

NPP Boreal Forest: Mississagi, Canada  

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Mississagi, Canada, 1970-1973 Mississagi, Canada, 1970-1973 Data Citation Cite this data set as follows: Morrison, I. K., and N. W. Foster. 2001. NPP Boreal Forest: Mississagi, Canada, 1970-1973. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of different vegetation components and soil were determined for a 30-year old pine forest in northern Ontario, Canada, and a detailed nutrient budget published. The 30-year old stand was compared with nearby 20-year old and 65-year old stands, all of which were growing on a glaciofluvial flat. Net primary productivity (NPP) was not directly estimated, but data exist on above-ground tree growth and litterfall.

16

NPP Boreal Forest: Schefferville, Canada  

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Schefferville, Canada, 1974 Schefferville, Canada, 1974 Data Citation Cite this data set as follows: Rencz, A. N., and A. N. D. Auclair. 2001. NPP Boreal Forest: Schefferville, Canada, 1974. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of a boreal ecosystem (subarctic lichen woodland) was determined at Schefferville, Canada, during the 1974 growing season. The main objective was to describe a "typical" lichen woodland, a vegetation type found in the transitional zone between boreal forest and tundra on well-drained, nutrient-poor podzolic soils. Such areas are occupied sparsely by black spruce trees (Picea mariana) with low growth

17

NPP Boreal Forest: Superior National Forest, U.S.A.  

NLE Websites -- All DOE Office Websites (Extended Search)

Superior National Forest, U.S.A., 1983-1984 Superior National Forest, U.S.A., 1983-1984 Data Citation Cite this data set as follows: Hall, F. G. 1997. NPP Boreal Forest: Superior National Forest, U.S.A., 1983-1984. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a boreal forest was determined at 31 spruce and 30 aspen forest stands in the Superior National Forest (SNF) near Ely, Minnesota, U.S.A., in 1983 and 1984 by the National Aeronautics and Space Administration. The purpose of the experiment was to investigate the ability of remote sensing to provide estimates of biophysical properties of ecosystems, such as leaf area index (LAI), biomass and net primary productivity (NPP). These ground-based estimates of above-ground biomass

18

NPP Boreal Forest: Jädraås, Sweden  

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low water storage capacity. Land use history in the region includes forest grazing, burning for crops and grazing, charcoal burning, tar-burning, logging and felling for paper...

19

NPP Boreal Forest: Canal Flats, Canada  

NLE Websites -- All DOE Office Websites (Extended Search)

Canal Flats, Canada, 1984 Canal Flats, Canada, 1984 Data Citation Cite this data set as follows: Comeau, P. G., and J. P. Kimmins. 1999. NPP Boreal Forest: Canal Flats, Canada, 1984. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Above and below-ground biomass and productivity of four lodgepole pine stands (Pinus contorta var. latifolia) were determined near Canal Flats, Canada, during the 1984 growing season. Two stands growing on xeric sites and two stands growing on mesic sites were studied to determine the influence of soil water content on resource allocation to above-ground versus below-ground plant components. The stands were 70-78 years old, unmanaged, and had regenerated naturally following wildfire.

20

NPP Tropical Forest: Gunung Mulu, Malaysia  

NLE Websites -- All DOE Office Websites (Extended Search)

Mulu World Heritage Site may be found on the Web pages maintained by UNESCO and the UNEP World Conservation Monitoring Center. Detailed data are available on biomass, different...

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

NPP Tropical Forest: San Eusebio, Venezuela  

NLE Websites -- All DOE Office Websites (Extended Search)

Eusebio, Venezuela, 1970-1971 PHOTOGRAPH Photograph: General view of the San Eusebio site (click on the photo to view a series of images from this site) Data Citation Cite this...

22

Tropical Africa: Total Forest Biomass (By Country)  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Africa: Total Forest Biomass (By Country) Tropical Africa: Total Forest Biomass (By Country) image Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNL/CDIAC-92, NDP-055. Carbon Dioxide Information Analysis Center, U.S. Department of Energy, Oak Ridge National Laboratory, Oak Ridge, Tennessee, U.S.A. More Maps Calculated Actual Aboveground Live Biomass in Forests (1980) Maximum Potential Biomass Density Land Use (1980) Area of Closed Forests (By Country) Mean Biomass of Closed Forests (By County) Area of Open Forests (By Country) Mean Biomass of Open Forests (By County) Percent Forest Cover (By Country) Population Density - 1990 (By Administrative Unit) Population Density - 1980 (By Administrative Unit) Population Density - 1970 (By Administrative Unit)

23

Tropical Forest Foundation | Open Energy Information  

Open Energy Info (EERE)

Tropical Forest Foundation Tropical Forest Foundation Jump to: navigation, search Logo: Tropical Forest Foundation Name Tropical Forest Foundation Address 2121 Eisenhower Ave. Suite 200 Place Alexandria, Virginia Zip 22314 Region Northeast - NY NJ CT PA Area Phone number 703.518.8834 Website http://tropicalforestfoundatio Coordinates 38.8013734°, -77.0668734° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.8013734,"lon":-77.0668734,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

24

Tropical Forest Trust | Open Energy Information  

Open Energy Info (EERE)

Tropical Forest Trust Tropical Forest Trust Name Tropical Forest Trust Address The Forest Trust 721 NW Ninth Avenue, Suite 195 Place Portland, Oregon Zip 97209 Region Pacific Northwest Area Year founded 1999 Website http://www.tft-forests.org/ Coordinates 45.5284073°, -122.6803494° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.5284073,"lon":-122.6803494,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

25

Effects of nitrogen additions on above- and belowground carbon dynamics in two tropical forests  

Science Conference Proceedings (OSTI)

Anthropogenic nitrogen (N) deposition is increasing rapidly in tropical regions, adding N to ecosystems that often have high background N availability. Tropical forests play an important role in the global carbon (C) cycle, yet the effects of N deposition on C cycling in these ecosystems are poorly understood. We used a field N-fertilization experiment in lower and upper elevation tropical rain forests in Puerto Rico to explore the responses of above- and belowground C pools to N addition. As expected, tree stem growth and litterfall productivity did not respond to N fertilization in either of these Nrich forests, indicating a lack of N limitation to net primary productivity (NPP). In contrast, soil C concentrations increased significantly with N fertilization in both forests, leading to larger C stocks in fertilized plots. However, different soil C pools responded to N fertilization differently. Labile (low density) soil C fractions and live fine roots declined with fertilization, while mineral-associated soil C increased in both forests. Decreased soil CO2 fluxes in fertilized plots were correlated with smaller labile soil C pools in the lower elevation forest (R2 = 0.65, p\\0.05), and with lower live fine root biomass in the upper elevation forest (R2 = 0.90, p\\0.05). Our results indicate that soil C storage is sensitive to N deposition in tropical forests, even where plant productivity is not N-limited. The mineral-associated soil C pool has the potential to respond relatively quickly to N additions, and can drive increases in bulk soil C stocks in tropical forests.

Cusack, D.; Silver, W.L.; Torn, M.S.; McDowell, W.H.

2011-04-15T23:59:59.000Z

26

NPP Boreal Forest: Consistent Worldwide Site Estimates, 1977...  

NLE Websites -- All DOE Office Websites (Extended Search)

Consistent Worldwide Site Estimates, 1977-1994 Data Citation Cite this data set as follows: Gower, S. T., O. Krankina, R. J. Olson, M. Apps, S. Linder, and C. Wang. 2001. NPP...

27

10 NPP Data Sets Updated  

NLE Websites -- All DOE Office Websites (Extended Search)

Consistent Worldwide Site Estimates, 1965-1995, R1 NPP Boreal Forest: Canal Flats, Canada, 1984, R1 NPP Boreal Forest: Flakaliden, Sweden, 1986-1996,R1 NPP Boreal Forest:...

28

Tropical Africa: Mean Biomass of Closed Forests By Country  

NLE Websites -- All DOE Office Websites (Extended Search)

Forests By Country image Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNLCDIAC-92, NDP-055. Carbon Dioxide Information...

29

Tropical Africa: Mean Biomass of Open Forests By Country  

NLE Websites -- All DOE Office Websites (Extended Search)

Forests By Country image Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNLCDIAC-92, NDP-055. Carbon Dioxide Information...

30

NPP Temperate Forest: OTTER Project Sites, Oregon, U.S.A.  

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Temperate Forest: OTTER Project Sites, Oregon, U.S.A., 1989-1991 Temperate Forest: OTTER Project Sites, Oregon, U.S.A., 1989-1991 [PHOTOGRAPH] Photograph: Forest in the western coastal range of Oregon (click on the photo to view a series of images from the OTTER sites) Data Citation Cite this data set as follows: Waring, R. H., B. Law, and B. Bond. 1999. NPP Temperate Forest: OTTER Project Sites, Oregon, U.S.A., 1989-1991. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description The Oregon Transect Ecosystem Research Project (OTTER) was conducted to develop a strategy to extrapolate point measurements and estimates of ecosystem structure and function across large geographic regions that varied in climate and vegetation. The full spectrum of remote-sensing data

31

NPP Tropical Forest: Consistent Worldwide Site Estimates, 1967...  

NLE Websites -- All DOE Office Websites (Extended Search)

Consistent Worldwide Site Estimates, 1967-1999 Data Citation Cite this data set as follows: Clark, D. A., S. Brown, D. W. Kicklighter, J. Q. Chambers, J. R. Thomlinson, J. Ni, and...

32

NPP Tropical Forest: Cinnamon Bay, U.S. Virgin Islands  

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situated about 90 km east of Puerto Rico. The island was dominated by plantation agriculture in the 18th and 19th centuries, much of which was abandoned after the abolition of...

33

Quantifying Environmental Drivers of Future Tropical Forest Extent  

Science Conference Proceedings (OSTI)

Future changes in atmospheric greenhouse gas concentrations, and their associated influences on climate, will affect the future sustainability of tropical forests. While dynamic global vegetation models (DGVMs) represent the processes by which ...

Peter Good; Chris Jones; Jason Lowe; Richard Betts; Ben Booth; Chris Huntingford

2011-03-01T23:59:59.000Z

34

Benefits of Tropical Forest Management Under the New Climate Change  

Open Energy Info (EERE)

Benefits of Tropical Forest Management Under the New Climate Change Benefits of Tropical Forest Management Under the New Climate Change Agreement-A Case Study in Cambodia Jump to: navigation, search Name Benefits of Tropical Forest Management Under the New Climate Change Agreement-A Case Study in Cambodia Agency/Company /Organization United States Agency for International Development, Global Environment Facility, United Nations Development Programme Sector Land Focus Area Forestry Topics Policies/deployment programs, Background analysis Resource Type Lessons learned/best practices Website http://www.forestcarbonportal. Country Cambodia UN Region South-Eastern Asia References REDD Cambodia Case Study[1] Benefits of Tropical Forest Management Under the New Climate Change Agreement-A Case Study in Cambodia Screenshot

35

ORNL DAAC NPP TEMPERATE FOREST: GREAT SMOKY MOUNTAINS, TENNESSEE, U.S.A.,  

NLE Websites -- All DOE Office Websites (Extended Search)

TEMPERATE FOREST: GREAT SMOKY MOUNTAINS, TENNESSEE, U.S.A., 1978-1992 TEMPERATE FOREST: GREAT SMOKY MOUNTAINS, TENNESSEE, U.S.A., 1978-1992 Get Data Summary: Productivity of old, unlogged stands of southern Appalachian cove forest was studied and compared to young stands. Tree growth increments and allometric relationships were the basis for estimation of net primary production (NPP). Measurements of tree diameter at 1.37 m above ground were made at the beginning the study. Radial increment cores were taken from a subset of trees. Above-ground net primary production (ANPP) was estimated using regional species-specific allometric relationships for tree mass. Estimation procedures were outlined by Busing et al. (1993). Old stands of mixed deciduous (and mixed deciduous-Tsuga) were selected for their gentle terrain, accessibility and history of study. From 1988 to

36

The Energy Balance of a Tropical Evergreen Forest  

Science Conference Proceedings (OSTI)

This study presents the radiation climate of a dry tropical forest. It is based on measurements of incoming and outgoing shortwave and longwave radiation at the top and floor of the forest canopy during five months spanning the monsoon cycle in ...

R. T. Pinker; O. E. Thompson; T. F. Eck

1980-12-01T23:59:59.000Z

37

The Role of Disturbance in Dry Tropical Forest Landscapes  

Science Conference Proceedings (OSTI)

Disturbance can be defined as 'any relatively discrete event in time that disrupts ecosystem, community, or population structure and changes resources, substrate availability, or the physical environment'. This definition requires that the spatial and temporal scales of the system and disturbance be determined. Disturbances are typically characterized by their size, spatial distribution, frequency or return time, predictability, and magnitude (which includes both intensity and severity). These disturbance attributes set the parameters for the suite of species, both plant and animal, that can persist within a given system. As such, an understanding of seasonally dry tropical forests in Asia requires an understanding of disturbance within the region. However, disturbances are relatively poorly understood in dry tropical forests, partly because of the weak seasonality in temperature and high tree species diversity of these forests relative to most forest systems of the world. There are about 1,048,700 km{sup 2} of dry tropical forests worldwide and that only 3% of this land is in conservation status. In other words, 97% of the world's seasonally dry tropical forest is at risk of human disturbance. About half of this forest occurs in South America, where most of the conservation lands are located. Satellite imagery based on MODIS (Moderate Resolution Imaging Spectroradiometer) data shows that only about 3.8% of the world's dry tropical forests are in Australia and South east Asia. The susceptibility of these forests to human disturbances is of great concern and is largely unstudied. Because natural disturbance regimes shape the ecosystem structure and are in many ways integral to these forest systems, it is critical to know how natural disturbance affects dry forest in order to understand the effects of human activities on these forests. Even basic information about disturbances in dry tropical forests is only recently available. Therefore this chapter brings together much of the available information from dry tropical forest throughout the world with the goal of developing an understanding of the role of disturbance in Asian dry forests. Most ecologists now recognize that disturbances, rather than being catastrophic agents of destruction, are a normal, perhaps even an integral, part of long-term system dynamics. The composition, structure, organization, and development and trophic dynamics of most forest systems are the products of disturbances. As an example, the forest composition for two disturbances in the Anaikatty Hills of Western Ghats were compared, where the low disturbance was from past logging followed by cutting and illicit felling and grazing and the high disturbance was due to human presence, past logging, and fuelwood collection. They found higher species richness and Shannon-Wiener diversity index for the low-disturbance forest (98 and 3.9, respectively) compared to the high-disturbance stand (45 and 2.71, respectively) as well as significant differences in mean basal area of trees, density of seedlings, number of species, density and diversity of shrubs, and number of species and diversity of herbs. Some ecological systems contain species that have evolved in response to disturbances. Adaptations typical of dry tropical forest plants are drought tolerance, seed dispersal mechanisms, and the ability to sprout subsequent to disturbance. In contrast, evidence was found that human disturbance in Kakamega Forest of western Kenya has significantly reduced allelic richness and heterozygosity, increased inbreeding, and slightly reduced gene flow in Prunus africana in the past century.

Dale, Virginia H [ORNL

2011-01-01T23:59:59.000Z

38

Monitoring Selective Logging in Tropical Evergreen Forests Using Landsat: Multitemporal Regional Analyses in Mato Grosso, Brazil  

Science Conference Proceedings (OSTI)

Selective logging degrades tropical forests. Logging operations vary in timing, location, and intensity. Evidence of this land use is rapidly obscured by forest regeneration and ongoing deforestation. A detailed study of selective logging ...

Eraldo A. T. Matricardi; David L. Skole; Mark A. Cochrane; Jiaguo Qi; Walter Chomentowski

2005-11-01T23:59:59.000Z

39

Assessment of Tropical Forest Degradation with Canopy Fractional Cover from Landsat ETM+ and IKONOS Imagery  

Science Conference Proceedings (OSTI)

Tropical forests are being subjected to a wide array of disturbances in addition to outright deforestation. Selective logging is one of the most common disturbances ongoing in the Amazon, which results in significant changes in forest structure ...

Cuizhen Wang; Jiaguo Qi; Mark Cochrane

2005-10-01T23:59:59.000Z

40

Journal of Tropical Ecology (2002) 18:687705. Copyright 2002 Cambridge University Press The invasibility of tropical forests by exotic  

E-Print Network (OSTI)

forest location: the Hawaiian Islands. But the combination of Hawaii's extreme isolation and heavy human The invasibility of tropical forests by exotic plants PAUL V. A. FINE1 Department of Biology, University of Utah, 257S. 1400 East Rm. 201, Salt Lake City, UT 84112, USA (Accepted 20th September 2001) ABSTRACT

Fine, Paul V.A.

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

NPP Estimation for Grasslands  

NLE Websites -- All DOE Office Websites (Extended Search)

NPP for Grasslands NPP for Grasslands Introduction The Oak Ridge DAAC Net Primary Production (NPP) Database includes field measurements from grassland study sites worldwide. The following brief review and discussion is intended to explain the complexity of NPP estimates derived from grassland measurements. There is no single answer to the question, "What is the productivity of the ecosystem at study site A?"; rather there may be range of estimates of NPP, depending upon what data were actually collected and how these data are processed. Although some of these methods for determining NPP for grasslands may be applicable to other vegetation types (e.g., semi-deserts, tundra, or some crops), methods for forests, in particular, are significantly different. Nevertheless, it should be possible to answer the question, "Is this modelled value of NPP reasonable for this ecosystem type at this location?"

42

Benefits of Tropical Forest Management Under the New Climate...  

Open Energy Info (EERE)

plantation, forest-to-acacia plantation, forest-to-rubber plantation, and forest-to-oil palm plantation. We determined annual equivalent values for each option, and the...

43

NPP References and Summaries  

NLE Websites -- All DOE Office Websites (Extended Search)

Full references and selected summaries (in alphabetical order of first author name by data set): Chinese Forests NPP Data Set References Gao, Q. and X.S. Zhang (1997) A simulation...

44

Biogeography of Tropical Montane Cloud Forests. Part II: Mapping of Orographic Cloud Immersion  

Science Conference Proceedings (OSTI)

This study details two unique methods to quantify cloud-immersion statistics for tropical montane cloud forests (TMCFs). The first technique uses a new algorithm for determining cloud-base height using Moderate Resolution Imaging ...

Udaysankar S. Nair; Salvi Asefi; Ronald M. Welch; D. K. Ray; Robert O. Lawton; Vani Starry Manoharan; Mark Mulligan; Tom L. Sever; Daniel Irwin; J. Alan Pounds

2008-08-01T23:59:59.000Z

45

Biogeography of Tropical Montane Cloud Forests. Part I: Remote Sensing of Cloud-Base Heights  

Science Conference Proceedings (OSTI)

Cloud-base heights over tropical montane cloud forests are determined using Moderate Resolution Imaging Spectroradiometer (MODIS) cloud products and National Centers for Environmental Prediction global tropospheric final analysis (FNL) fields. ...

Ronald M. Welch; Salvi Asefi; Jian Zeng; Udaysankar S. Nair; Qingyuan Han; Robert O. Lawton; Deepak K. Ray; Vani Starry Manoharan

2008-04-01T23:59:59.000Z

46

Belowground nitrogen dynamics in relation to hurricane damage along a tropical dry forest chronosequence  

E-Print Network (OSTI)

1991). For instance, in Puerto Rico the nitrogen content ofof the tropical forests of Puerto Rico. Ecol Appl 9:555–572Luquillo Mountains of Puerto Rico. Biotro- pica 23:324–335

Hasselquist, Niles J.; Santiago, Louis S.; Allen, Michael F.

2010-01-01T23:59:59.000Z

47

Land cover change and remote sensing: Examples of quantifying spatiotemporal dynamics in tropical forests  

SciTech Connect

Research on human impacts or natural processes that operate over broad geographic areas must explicitly address issues of scale and spatial heterogeneity. While the tropical forests of Southeast Asia and Mexico have been occupied and used to meet human needs for thousands of years, traditional forest management systems are currently being transformed by rapid and far-reaching demographic, political, economic, and environmental changes. The dynamics of population growth, migration into the remaining frontiers, and responses to national and international market forces result in a demand for land to produce food and fiber. These results illustrate some of the mechanisms that drive current land use changes, especially in the tropical forest frontiers. By linking the outcome of individual land use decisions and measures of landscape fragmentation and change, the aggregated results shows the hierarchy of temporal and spatial events that in summation result in global changes to the most complex and sensitive biome -- tropical forests. By quantifying the spatial and temporal patterns of tropical forest change, researchers can assist policy makers by showing how landscape systems in these tropical forests are controlled by physical, biological, social, and economic parameters.

Krummel, J.R.; Su, Haiping [Argonne National Lab., IL (United States); Fox, J. [East-West Center, Honolulu, HI (United States); Yarnasan, S.; Ekasingh, M. [Chiang Mai Univ. (Thailand)

1995-06-01T23:59:59.000Z

48

Tropical forest responses to increasing [CO2]: current knowledge and opportunities for future research  

Science Conference Proceedings (OSTI)

Elevated atmospheric [CO2] (ca) will undoubtedly affect the metabolism of tropical forests worldwide; however, critical aspects of how tropical forests will respond remain largely unknown. Here we review the current state of knowledge about physiological and ecological responses, with the aim of providing a framework that can help to guide future experimental research. Modelling studies have indicated that elevated ca can potentially stimulate photosynthesis more in the tropics than at higher latitudes, because suppression of photorespiration by elevated ca increases with temperature. However, canopy leaves in tropical forests could also potentially reach a high temperature threshold under elevated ca that will moderate the rise in photosynthesis. Belowground responses, including fine root production, nutrient foraging, and soil organic matter processing, will be especially important to the integrated ecosystem response to elevated CO2. Water-use efficiency will increase as ca rises, potentially impacting upon soil moisture status and nutrient availability. Recruitment may be differentially altered for some functional groups, potentially decreasing ecosystem carbon storage. Whole-forest CO2 enrichment experiments are urgently needed to test predictions of tropical forest functioning under elevated ca. Smaller scale experiments in the understory and in gaps would also be informative, and could provide stepping stones toward stand-scale manipulations.

Cernusak, Lucas [Australian National University, Canberra, Australia; Winter, Klaus [Smithsonian Tropical Research Institute; Dalling, James [University of Illinois, Urbana-Champaign; Holtum, Joseph [James Cook University; Jaramillo, Carlos [Smithsonian Tropical Research Institute; Korner, Christian [University of Basel; Leakey, Andrew D.B. [University of Illinois; Norby, Richard J [ORNL; Poulter, Benjamin [Laboratoire des Sciences du Climat et de l'Environement, France; Turner, Benjamin [Smithsonian Tropical Research Institute; Wright, S. Joseph [Smithsonian Tropical Research Institute

2013-01-01T23:59:59.000Z

49

Comparing Tropical Forest Projections from Two Generations of Hadley Centre Earth System Models, HadGEM2-ES and HadCM3LC  

Science Conference Proceedings (OSTI)

Future changes in atmospheric greenhouse gas concentrations and associated influences on climate could affect the future sustainability of tropical forests. The authors report on tropical forest projections from the new Hadley Centre Global ...

Peter Good; Chris Jones; Jason Lowe; Richard Betts; Nicola Gedney

2013-01-01T23:59:59.000Z

50

Tropical forest soil microbial communities couple iron and carbon biogeochemistry  

E-Print Network (OSTI)

Luquillo mountains, Puerto Rico: I. Long-term versus short-Forest, Commonwealth of Puerto Rico. US Department ofLuquillo Mountains of Puerto Rico. U.S.D.A. Forest Service

Dubinsky, E.A.

2010-01-01T23:59:59.000Z

51

Modest carbon price could save Borneo forests: study Reuters, 4 June 2009 -Tropical forests in Borneo under threat of conversion to palm oil  

E-Print Network (OSTI)

Modest carbon price could save Borneo forests: study Reuters, 4 June 2009 - Tropical forests if carbon credits were priced between $10 and $33 per tonne, a study has found. Forests soak up vast amounts of planet-warming carbon dioxide each year and are crucial in the fight to curb climate change. Many

52

BIOMETRIC AND MICROMETEOROLOGICAL MEASUREMENTS OF TROPICAL FOREST CARBON BALANCE  

E-Print Network (OSTI)

dioxide fluxes from a very tall tower in a northern forest:67 m tall, 46 cm triangular cross section tower (model 55G;

2004-01-01T23:59:59.000Z

53

Stream Discharge in Tropical Headwater Catchments as a Result of Forest Clearing and Soil Degradation  

Science Conference Proceedings (OSTI)

Tropical Africa is affected by intense land-use change, particularly forest conversion to agricultural land. In this study, the stream discharge of four small headwater catchments located within an area of 6 km2 in western Kenya was examined for 2 ...

John W. Recha; Johannes Lehmann; M. Todd Walter; Alice Pell; Louis Verchot; Mark Johnson

2012-12-01T23:59:59.000Z

54

A Climate Transect through Tropical Montane Rain Forest in Hawaii  

Science Conference Proceedings (OSTI)

Two years of climate data from a transect of three surface meteorological stations on the windward slopes of Mauna Loa, Hawaii, are analyzed. The stations constitute a transect between 700 and 1640 m through the wet, montane rain forest zone ...

James O. Juvik; Dennis Nullet

1994-11-01T23:59:59.000Z

55

Temporal variation in stable isotopic composition of rainfall and groundwater in a tropical dry forest in the northeastern Caribbean  

Science Conference Proceedings (OSTI)

Karst topography links rainfall to groundwater recharge, therefore possible changes in the hydrology can play an important role in ecosystem function especially in tropical dry forests where water is the most limiting resource. This study ...

Y. Govender; E. Cuevas; L. D. S. Sternberg; M. R. Jury

56

Patterns of water and heat flux across a biome gradient from tropical forest to savanna in Brazil  

E-Print Network (OSTI)

Porto Velho, RO 78900-000, Brazil. P. Artaxo, L. S. Borma,tropical forest to savanna in Brazil Humberto R. da Rocha, 1RIMA Editora, Sa˜o Carlos, Brazil. Oliveira, R. , et al. (

2009-01-01T23:59:59.000Z

57

Tropical Forest Fragments Enhance Pollinator Activity in Nearby Coffee Crops  

E-Print Network (OSTI)

accounted for >90% of all floral visits in distant sites. The gradient from the riparian strip showed visitation rates by over 50% in distant sites (where Apis was almost the only pollinator). In near sites dependence on a single introduced pollinator. Exploring the economic links between forest preservation

Vermont, University of

58

Biocomplexity of deforestation in the Caparo tropical forest reserve in Venezuela: An integrated multi-agent and cellular automata model  

Science Conference Proceedings (OSTI)

A multi-agent model of social and environmental complexity of deforestation was developed for the Caparo Forest Reserve, Venezuela. It includes three types of agents: settlers, government, and lumber concessionaires. Settlers represent people of limited ... Keywords: Biocomplexity, Deforestation, Multi-agents, Simulation, Tropical forests, Venezuela

Niandry Moreno; Raquel Quintero; Magdiel Ablan; Rodrigo Barros; Jacinto Dávila; Hirma Ramírez; Giorgio Tonella; Miguel F. Acevedo

2007-05-01T23:59:59.000Z

59

3-PG Productivity Modeling of Regenerating Amazon Forests: Climate Sensitivity and Comparison with MODIS-Derived NPP  

Science Conference Proceedings (OSTI)

Potential forest growth predicted by the Physiological Principles in Predicting Growth (3-PG) model was compared for forest and deforested areas in the Legal Amazon to assess potential differing regeneration associated with climate. Historical ...

Joseph D. White; Neal A. Scott; Adam I. Hirsch; Steven W. Running

2006-02-01T23:59:59.000Z

60

Using biodiversity methods to assess the impacts of oil and gas development in tropical rain forests  

Science Conference Proceedings (OSTI)

Oil and gas development in tropical rain forests has attracted international attention because of the potentially adverse effects on the forest ecosystems. Biodiversity is a topic of particular concern, but is difficult to assess for small areas of disturbance. In July 1992 we used light traps to compare insect diversity at canopy and ground level as a means of detecting the impacts of an exploratory well site and related facilities within mature Amazonian rain forest in the Oriente Province of Ecuador. Replicate samples were collected at the well site, in a nearby area of agricultural development, and in a reference site within mature forest. Species richness was determined, and diversity indices were calculated for each set of samples. Results indicated that changes in diversity could be detected in the canopy and at ground level at the well site, but that the reduction in diversity was small. Biological diversity was substantially reduced in the area of agricultural development. Limitations and possible applications of this approach are discussed.

Reagan, D.P.; Silva del Poso, X. [Woodward-Clyde Consultants, Denver, CO (United States)]|[Sociedad Entomologica Ecuatoriana, Quito (Ecuador)

1995-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Mapping Tropical Forest Trees Using High-Resolution Aerial Digital Photographs Carol X. Garzon-Lopez1,5  

E-Print Network (OSTI)

-scale tree distri- butions. At Barro Colorado Island, Panama, we used high-resolution aerial digital is available in the online version of this article. Key words: Barro Colorado Island; high-resolution aerialMapping Tropical Forest Trees Using High-Resolution Aerial Digital Photographs Carol X. Garzon

Bermingham, Eldredge

62

Plant and microbial controls on nitrogen retention and loss in a Humid Tropical Forest  

E-Print Network (OSTI)

Experimental Forest, Puerto Rico. Hydrological Processes 18:and productivity in Puerto-Rico's luquillo mountains.experimental forest Puerto Rico. US Forest Serv Gen Tech Rep

Templer, P.

2009-01-01T23:59:59.000Z

63

Impact of post-mining subsidence on nitrogen transformation in southern tropical dry deciduous forest, India  

Science Conference Proceedings (OSTI)

The goal of our research was to assess the impact of post-mining land subsidence, caused due to underground coal mining operations, on fine root biomass and root tips count; plant available nutrient status, microbial biomass N (MBN) and N-mineralization rates of a Southern tropical dry deciduous forest of Singareni Coalfields of India. The changes were quantified in all the three (rainy, winter and summer) seasons, in slope and depression microsites of the subsided land and an adjacent undamaged forest microsite. Physico-chemical characteristics were found to be altered after subsidence, showing a positive impact of subsidence on soil moisture, bulk density, water holding capacity, organic carbon content, total N and total P. The increase in all the parameters was found in depression microsites, while in slope microsites, the values were lower. Fine root biomass and root tips count increased in the subsided depression microsites, as demonstrated by increases of 62% and 45%, respectively. Soil nitrate-N and phosphate-P concentrations were also found to be higher in depression microsite, showing an increase of 35.68% and 24.74%, respectively. Depression microsite has also shown the higher MBN value with an increase over control. Net nitrification, net N-mineralization and MBN were increased in depression microsite by 29.77%, 25.72% and 34%, respectively. There was a positive relation of microbial N with organic C, fine root biomass and root tips.

Tripathi, N.; Singh, R.S.; Singh, J.S. [Central Institute of Mining & Fuel Research, Dhanbad (India)

2009-04-15T23:59:59.000Z

64

Calibrating the Simple Biosphere Model for Amazonian Tropical Forest Using Field and Remote Sensing Data. Part I: Average Calibration with Field Data  

Science Conference Proceedings (OSTI)

This paper describes the operation and calibration of the simple biosphere model (SiB) of Sellers et al. using micrometeorological and hydrological measurements taken in and above tropical forest in the central Amazon basin. The paper provides:

Piers J. Sellers; W. James Shuttleworth; Jeff L. Dorman; Amnon Dalcher; John M. Roberts

1989-08-01T23:59:59.000Z

65

NPP Database Dictionary  

NLE Websites -- All DOE Office Websites (Extended Search)

The NPP Database Dictionary defines the common terms, codes, and conventions used in the database. Data in the NPP Database may have been reformatted to achieve consistency in...

66

Forest Restoration Carbon Analysis of Baseline Carbon Emissions and Removal in Tropical Rainforest at La Selva Central, Peru  

DOE Green Energy (OSTI)

Conversion of tropical forest to agricultural land and pasture has reduced forest extent and the provision of ecosystem services, including watershed protection, biodiversity conservation, and carbon sequestration. Forest conservation and reforestation can restore those ecosystem services. We have assessed forest species patterns, quantified deforestation and reforestation rates, and projected future baseline carbon emissions and removal in Amazon tropical rainforest at La Selva Central, Peru. The research area is a 4800 km{sup 2} buffer zone around the Parque Nacional Yanachaga-Chemillen, Bosque de Proteccion San Matias-San Carlos, and the Reserva Comunal Yanesha. A planned project for the period 2006-2035 would conserve 4000 ha of forest in a proposed 7000 ha Area de Conservacion Municipale de Chontabamba and establish 5600 ha of natural regeneration and 1400 ha of native species plantations, laid out in fajas de enriquecimiento (contour plantings), to reforest 7000 ha of agricultural land. Forest inventories of seven sites covering 22.6 ha in primary forest and 17 sites covering 16.5 ha in secondary forest measured 17,073 trees of diameter {ge} 10 cm. The 24 sites host trees of 512 species, 267 genera, and 69 families. We could not identify the family of 7% of the trees or the scientific species of 21% of the trees. Species richness is 346 in primary forest and 257 in the secondary forest. In primary forest, 90% of aboveground biomass resides in old-growth species. Conversely, in secondary forest, 66% of aboveground biomass rests in successional species. The density of trees of diameter {ge} 10 cm is 366 trees ha{sup -1} in primary forest and 533 trees ha{sup -1} in secondary forest, although the average diameter is 24 {+-} 15 cm in primary forest and 17 {+-} 8 cm in secondary forest. Using Amazon forest biomass equations and wood densities for 117 species, aboveground biomass is 240 {+-} 30 t ha{sup -1} in the primary sites and 90 {+-} 10 t ha{sup -1} in the secondary sites. Aboveground carbon density is 120 {+-} 15 t ha{sup -1} in primary forest and 40 {+-} 5 t ha{sup -1} in secondary forest. Forest stands in the secondary forest sites range in age from 10 to 42 y. Growth in biomass (t ha{sup -1}) as a function of time (y) follows the relation: biomass = 4.09-0.017 age{sup 2} (p < 0.001). Aboveground biomass and forest species richness are positively correlated (r{sup 2} = 0.59, p < 0.001). Analyses of Landsat data show that the land cover of the 3700 km{sup 2} of non-cloud areas in 1999 was: closed forest 78%; open forest 12%, low vegetation cover 4%, sparse vegetation cover 6%. Deforestation from 1987 to 1999 claimed a net 200 km{sup 2} of forest, proceeding at a rate of 0.005 y{sup -1}. Of those areas of closed forest in 1987, only 89% remained closed forest in 1999. Consequently, closed forests experienced disruption in the time period at double the rate of net deforestation. The three protected areas experienced negligible deforestation or slight reforestation. Based on 1987 forest cover, 26,000 ha are eligible for forest carbon trading under the Clean Development Mechanism, established by the Kyoto Protocol to the United Nations Framework Convention on Climate Change. Principal components analysis showed that distance to nonforest was the factor that best explained observed patterns of deforestation while distance to forest best explained observed patterns of reforestation, more significant than elevation, distance to rivers, distance to roads, slope, and distance to towns of population > 400. Aboveground carbon in live vegetation in the project area decreased from 35 million {+-} 4 million t in 1987 to 34 million {+-} 4 million t in 1999. Projected aboveground carbon in live vegetation would fall to 33 million {+-} 4 million t in 2006, 32 million {+-} 4 million t in 2011, and 29 million {+-} 3 million t in 2035. Projected net deforestation in the research area would total 13,000 {+-} 3000 ha in the period 1999-2011, proceeding at a rate of 0.003 {+-} 0.0007 y{sup -1}, and would total 33,000 {+-} 7000

Patrick Gonzalez; Benjamin Kroll; Carlos R. Vargas

2006-01-10T23:59:59.000Z

67

Biological Nitrogen Fixation in Two Tropical Forests: Ecosystem-Level Patterns and Effects of Nitrogen Fertilization  

E-Print Network (OSTI)

and high elevation forests of Puerto Rico. Appl Soil Ecolthe Luquillo Mountains, Puerto Rico. Biotropica 23:386–92.hillslope Tabonuco forest, Puerto Rico. Biogeochemistry 46:

Cusack, Daniela F.; Silver, Whendee; McDowell, William H.

2009-01-01T23:59:59.000Z

68

Geographical Distribution of Biomass Carbon in Tropical Southeast Asian Forests: A Database  

DOE Green Energy (OSTI)

A database was generated of estimates of geographically referenced carbon densities of forest vegetation in tropical Southeast Asia for 1980. A geographic information system (GIS) was used to incorporate spatial databases of climatic, edaphic, and geomorphological indices and vegetation to estimate potential (i.e., in the absence of human intervention and natural disturbance) carbon densities of forests. The resulting map was then modified to estimate actual 1980 carbon density as a function of population density and climatic zone. The database covers the following 13 countries: Bangladesh, Brunei, Cambodia (Campuchea), India, Indonesia, Laos, Malaysia, Myanmar (Burma), Nepal, the Philippines, Sri Lanka, Thailand, and Vietnam. The data sets within this database are provided in three file formats: ARC/INFO{trademark} exported integer grids, ASCII (American Standard Code for Information Interchange) files formatted for raster-based GIS software packages, and generic ASCII files with x, y coordinates for use with non-GIS software packages. This database includes ten ARC/INFO exported integer grid files (five with the pixel size 3.75 km x 3.75 km and five with the pixel size 0.25 degree longitude x 0.25 degree latitude) and 27 ASCII files. The first ASCII file contains the documentation associated with this database. Twenty-four of the ASCII files were generated by means of the ARC/INFO GRIDASCII command and can be used by most raster-based GIS software packages. The 24 files can be subdivided into two groups of 12 files each. These files contain real data values representing actual carbon and potential carbon density in Mg C/ha (1 megagram = 10{sup 6} grams) and integer- coded values for country name, Weck's Climatic Index, ecofloristic zone, elevation, forest or non-forest designation, population density, mean annual precipitation, slope, soil texture, and vegetation classification. One set of 12 files contains these data at a spatial resolution of 3.75 km, whereas the other set of 12 files has a spatial resolution of 0.25 degree. The remaining two ASCII data files combine all of the data from the 24 ASCII data files into 2 single generic data files. The first file has a spatial resolution of 3.75 km, and the second has a resolution of 0.25 degree. Both files also provide a grid-cell identification number and the longitude and latitude of the centerpoint of each grid cell. The 3.75-km data in this numeric data package yield an actual total carbon estimate of 42.1 Pg (1 petagram = 10{sup 15} grams) and a potential carbon estimate of 73.6 Pg; whereas the 0.25-degree data produced an actual total carbon estimate of 41.8 Pg and a total potential carbon estimate of 73.9 Pg. Fortran and SASTM access codes are provided to read the ASCII data files, and ARC/INFO and ARCVIEW command syntax are provided to import the ARC/INFO exported integer grid files. The data files and this documentation are available without charge on a variety of media and via the Internet from the Carbon Dioxide Information Analysis Center (CDIAC).

Brown, S.

2002-02-07T23:59:59.000Z

69

Geographical Distribution of Biomass Carbon in Tropical Southeast Asian Forests: A Database  

DOE Green Energy (OSTI)

A database was generated of estimates of geographically referenced carbon densities of forest vegetation in tropical Southeast Asia for 1980. A geographic information system (GIS) was used to incorporate spatial databases of climatic, edaphic, and geomorphological indices and vegetation to estimate potential (i.e., in the absence of human intervention and natural disturbance) carbon densities of forests. The resulting map was then modified to estimate actual 1980 carbon density as a function of population density and climatic zone. The database covers the following 13 countries: Bangladesh, Brunei, Cambodia (Campuchea), India, Indonesia, Laos, Malaysia, Myanmar (Burma), Nepal, the Philippines, Sri Lanka, Thailand, and Vietnam. The data sets within this database are provided in three file formats: ARC/INFOTM exported integer grids, ASCII (American Standard Code for Information Interchange) files formatted for raster-based GIS software packages, and generic ASCII files with x, y coordinates for use with non-GIS software packages. This database includes ten ARC/INFO exported integer grid files (five with the pixel size 3.75 km x 3.75 km and five with the pixel size 0.25 degree longitude x 0.25 degree latitude) and 27 ASCII files. The first ASCII file contains the documentation associated with this database. Twenty-four of the ASCII files were generated by means of the ARC/INFO GRIDASCII command and can be used by most raster-based GIS software packages. The 24 files can be subdivided into two groups of 12 files each. These files contain real data values representing actual carbon and potential carbon density in Mg C/ha (1 megagram = 10{sup 6} grams) and integer-coded values for country name, Weck's Climatic Index, ecofloristic zone, elevation, forest or non-forest designation, population density, mean annual precipitation, slope, soil texture, and vegetation classification. One set of 12 files contains these data at a spatial resolution of 3.75 km, whereas the other set of 12 files has a spatial resolution of 0.25 degree. The remaining two ASCII data files combine all of the data from the 24 ASCII data files into 2 single generic data files. The first file has a spatial resolution of 3.75 km, and the second has a resolution of 0.25 degree. Both files also provide a grid-cell identification number and the longitude and latitude of the center-point of each grid cell. The 3.75-km data in this numeric data package yield an actual total carbon estimate of 42.1 Pg (1 petagram = 10{sup 15} grams) and a potential carbon estimate of 73.6 Pg; whereas the 0.25-degree data produced an actual total carbon estimate of 41.8 Pg and a total potential carbon estimate of 73.9 Pg. Fortran and SAS{trademark} access codes are provided to read the ASCII data files, and ARC/INFO and ARCVIEW command syntax are provided to import the ARC/INFO exported integer grid files. The data files and this documentation are available without charge on a variety of media and via the Internet from the Carbon Dioxide Information Analysis Center (CDIAC).

Brown, S

2001-05-22T23:59:59.000Z

70

Geographical Distribution of Biomass Carbon in Tropical Southeast Asian Forests: A Database  

SciTech Connect

A database was generated of estimates of geographically referenced carbon densities of forest vegetation in tropical Southeast Asia for 1980. A geographic information system (GIS) was used to incorporate spatial databases of climatic, edaphic, and geomorphological indices and vegetation to estimate potential (i.e., in the absence of human intervention and natural disturbance) carbon densities of forests. The resulting map was then modified to estimate actual 1980 carbon density as a function of population density and climatic zone. The database covers the following 13 countries: Bangladesh, Brunei, Cambodia (Campuchea), India, Indonesia, Laos, Malaysia, Myanmar (Burma), Nepal, the Philippines, Sri Lanka, Thailand, and Vietnam. The data sets within this database are provided in three file formats: ARC/INFOTM exported integer grids, ASCII (American Standard Code for Information Interchange) files formatted for raster-based GIS software packages, and generic ASCII files with x, y coordinates for use with non-GIS software packages. This database includes ten ARC/INFO exported integer grid files (five with the pixel size 3.75 km x 3.75 km and five with the pixel size 0.25 degree longitude x 0.25 degree latitude) and 27 ASCII files. The first ASCII file contains the documentation associated with this database. Twenty-four of the ASCII files were generated by means of the ARC/INFO GRIDASCII command and can be used by most raster-based GIS software packages. The 24 files can be subdivided into two groups of 12 files each. These files contain real data values representing actual carbon and potential carbon density in Mg C/ha (1 megagram = 10{sup 6} grams) and integer-coded values for country name, Weck's Climatic Index, ecofloristic zone, elevation, forest or non-forest designation, population density, mean annual precipitation, slope, soil texture, and vegetation classification. One set of 12 files contains these data at a spatial resolution of 3.75 km, whereas the other set of 12 files has a spatial resolution of 0.25 degree. The remaining two ASCII data files combine all of the data from the 24 ASCII data files into 2 single generic data files. The first file has a spatial resolution of 3.75 km, and the second has a resolution of 0.25 degree. Both files also provide a grid-cell identification number and the longitude and latitude of the center-point of each grid cell. The 3.75-km data in this numeric data package yield an actual total carbon estimate of 42.1 Pg (1 petagram = 10{sup 15} grams) and a potential carbon estimate of 73.6 Pg; whereas the 0.25-degree data produced an actual total carbon estimate of 41.8 Pg and a total potential carbon estimate of 73.9 Pg. Fortran and SAS{trademark} access codes are provided to read the ASCII data files, and ARC/INFO and ARCVIEW command syntax are provided to import the ARC/INFO exported integer grid files. The data files and this documentation are available without charge on a variety of media and via the Internet from the Carbon Dioxide Information Analysis Center (CDIAC).

Brown, S

2001-05-22T23:59:59.000Z

71

Geographical Distribution of Biomass Carbon in Tropical Southeast Asian Forests: A Database  

SciTech Connect

A database was generated of estimates of geographically referenced carbon densities of forest vegetation in tropical Southeast Asia for 1980. A geographic information system (GIS) was used to incorporate spatial databases of climatic, edaphic, and geomorphological indices and vegetation to estimate potential (i.e., in the absence of human intervention and natural disturbance) carbon densities of forests. The resulting map was then modified to estimate actual 1980 carbon density as a function of population density and climatic zone. The database covers the following 13 countries: Bangladesh, Brunei, Cambodia (Campuchea), India, Indonesia, Laos, Malaysia, Myanmar (Burma), Nepal, the Philippines, Sri Lanka, Thailand, and Vietnam. The data sets within this database are provided in three file formats: ARC/INFO{trademark} exported integer grids, ASCII (American Standard Code for Information Interchange) files formatted for raster-based GIS software packages, and generic ASCII files with x, y coordinates for use with non-GIS software packages. This database includes ten ARC/INFO exported integer grid files (five with the pixel size 3.75 km x 3.75 km and five with the pixel size 0.25 degree longitude x 0.25 degree latitude) and 27 ASCII files. The first ASCII file contains the documentation associated with this database. Twenty-four of the ASCII files were generated by means of the ARC/INFO GRIDASCII command and can be used by most raster-based GIS software packages. The 24 files can be subdivided into two groups of 12 files each. These files contain real data values representing actual carbon and potential carbon density in Mg C/ha (1 megagram = 10{sup 6} grams) and integer- coded values for country name, Weck's Climatic Index, ecofloristic zone, elevation, forest or non-forest designation, population density, mean annual precipitation, slope, soil texture, and vegetation classification. One set of 12 files contains these data at a spatial resolution of 3.75 km, whereas the other set of 12 files has a spatial resolution of 0.25 degree. The remaining two ASCII data files combine all of the data from the 24 ASCII data files into 2 single generic data files. The first file has a spatial resolution of 3.75 km, and the second has a resolution of 0.25 degree. Both files also provide a grid-cell identification number and the longitude and latitude of the centerpoint of each grid cell. The 3.75-km data in this numeric data package yield an actual total carbon estimate of 42.1 Pg (1 petagram = 10{sup 15} grams) and a potential carbon estimate of 73.6 Pg; whereas the 0.25-degree data produced an actual total carbon estimate of 41.8 Pg and a total potential carbon estimate of 73.9 Pg. Fortran and SASTM access codes are provided to read the ASCII data files, and ARC/INFO and ARCVIEW command syntax are provided to import the ARC/INFO exported integer grid files. The data files and this documentation are available without charge on a variety of media and via the Internet from the Carbon Dioxide Information Analysis Center (CDIAC).

Brown, S.

2002-02-07T23:59:59.000Z

72

Characterization of Trapped Lignin-Degrading Microbes in Tropical Forest Soil  

DOE Green Energy (OSTI)

Lignin is often the most difficult portion of plant biomass to degrade, with fungi generally thought to dominate during late stage decomposition. Lignin in feedstock plant material represents a barrier to more efficient plant biomass conversion and can also hinder enzymatic access to cellulose, which is critical for biofuels production. Tropical rain forest soils in Puerto Rico are characterized by frequent anoxic conditions and fluctuating redox, suggesting the presence of lignin-degrading organisms and mechanisms that are different from known fungal decomposers and oxygen-dependent enzyme activities. We explored microbial lignin-degraders by burying bio-traps containing lignin-amended and unamended biosep beads in the soil for 1, 4, 13 and 30 weeks. At each time point, phenol oxidase and peroxidase enzyme activity was found to be elevated in the lignin-amended versus the unamended beads, while cellulolytic enzyme activities were significantly depressed in lignin-amended beads. Quantitative PCR of bacterial communities showed more bacterial colonization in the lignin-amended compared to the unamended beads after one and four weeks, suggesting that the lignin supported increased bacterial abundance. The microbial community was analyzed by small subunit 16S ribosomal RNA genes using microarray (PhyloChip) and by high-throughput amplicon pyrosequencing based on universal primers targeting bacterial, archaeal, and eukaryotic communities. Community trends were significantly affected by time and the presence of lignin on the beads. Lignin-amended beads have higher relative abundances of representatives from the phyla Actinobacteria, Firmicutes, Acidobacteria and Proteobacteria compared to unamended beads. This study suggests that in low and fluctuating redox soils, bacteria could play a role in anaerobic lignin decomposition.

DeAngelis, Kristen; Allgaier, Martin; Chavarria, Yaucin; Fortney, Julian; Hugenholtz, Phillip; Simmons, Blake; Sublette, Kerry; Silver, Whendee; Hazen, Terry

2011-07-14T23:59:59.000Z

73

NPP Grassland: Tuva, Russia  

NLE Websites -- All DOE Office Websites (Extended Search)

Tuva, Russia, 1978-1985 Tuva, Russia, 1978-1985 [PHOTOGRAPH] Photograph: Forest-steppe foothills near Tuva (click on the photo to view a larger image from this site). Data Citation Cite this data set as follows: Gilmanov, T. G. 1996. NPP Grassland: Tuva, Russia, 1978-1985. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of an ultra-continental steppe was determined at the Tuva study site from 1978 to 1985. Measurement of monthly dynamics of above-ground plant biomass were made for each growing season (May-August). Cumulative above-ground net primary production was estimated for some years. These data are part of a series of grassland data sets recently

74

Comparison of Different Techniques for the Measurement of Precipitation in Tropical Montane Rain Forest Regions  

Science Conference Proceedings (OSTI)

Characteristics of different precipitation measurements in a tropical mountain valley in southern Ecuador are compared in this study to determine potential errors. The instruments are used for different ecological purposes like erosion studies, ...

R. Rollenbeck; J. Bendix; P. Fabian; J. Boy; W. Wilcke; H. Dalitz; M. Oesker; P. Emck

2007-02-01T23:59:59.000Z

75

U.S Markets for Certified and Non-Certified Hardwood Tropical Forest Products  

E-Print Network (OSTI)

Forest Products Development Center School of Renewable Natural Resources Louisiana State University Louisiana Forest Products Development Center School of Renewable Natural Resources Louisiana State, Malaysia, and Thailand. U.S. Imports of STWP were generally from China, Canada, and the EU (mainly Italy

76

NPP Database Dictionary  

NLE Websites -- All DOE Office Websites (Extended Search)

All the terms used throughout the ORNL DAAC NPP Database (principally associated with sites in the grassland biome) are defined below. Since the field measurements were collected...

77

Current and Future Carbon Budgets of Tropical Rain Forest: A Cross Scale Analysis. Final Report  

DOE Green Energy (OSTI)

The goal of this project was to make a first assessment of the major carbon stocks and fluxes and their climatic determinants in a lowland neotropical rain forest, the La Selva Biological Station, Costa Rica. Our research design was based on the concurrent use of several of the best available approaches, so that data could be cross-validated. A major focus of our effort was to combine meteorological studies of whole-forest carbon exchange (eddy flux), with parallel independent measurements of key components of the forest carbon budget. The eddy flux system operated from February 1998 to February 2001. To obtain field data that could be scaled up to the landscape level, we monitored carbon stocks, net primary productivity components including tree growth and mortality, litterfall, woody debris production, root biomass, and soil respiration in a series of replicated plots stratified across the major environmental gradients of the forest. A second major focus of this project was on the stocks and changes of carbon in the soil. We used isotope studies and intensive monitoring to investigate soil organic stocks and the climate-driven variation of soil respiration down the soil profile, in a set of six 4m deep soil shafts stratified across the landscape. We measured short term tree growth, climate responses of sap flow, and phenology in a suite of ten canopy trees to develop individual models of tree growth to daytime weather variables.

Oberbauer, S. F.

2004-01-16T23:59:59.000Z

78

Effects of soil structure destruction on methane production and carbon partitioning between methanogenic pathways in tropical rain forest soils  

E-Print Network (OSTI)

weathered soils of Puerto Rico: 1. Morphology, formation andForest, Commonwealth of Puerto Rico (Interim Publica- tion),in subtropical forests in Puerto Rico, Biotropica, 27, 138 –

Teh, Y A; Silver, W L

2006-01-01T23:59:59.000Z

79

Net Primary Production (NPP) Project Page  

NLE Websites -- All DOE Office Websites (Extended Search)

RegionalGlobal > Net Primary Production (NPP) Net Primary Production (NPP) Project Overview The ORNL DAAC Net Primary Production (NPP) data set collection contains field...

80

Managing nontechnical risks associated with seismic operations in the tropical rain forests of Ecuador  

Science Conference Proceedings (OSTI)

Companies operating in sensitive areas are being challenged to address the environmental and social issues while preserving these areas for future generations. This increased international attention on environmental and sociocultural issues has led Amoco to focus efforts on developing new ideas and strategies to facilitate environmental and cultural management. In Ecuador, the major oil producing region is the Ecuadorian portion of the Amazon Basin, referred to locally as the Oriente. Amoco Ecuador BV recently completed a seismic acquisition program in the Oriente with minimum impact to the environment and the communities within the project area. The goal of this article is to describe Amoco`s experience in managing environmental, social, and public perception issues associated with seismic operations in the rain forests of Ecuador.

Barker, G.; Smith, G.R.; Vacas, F.J. [Amoco Corp., Houston, TX (United States); Swingholm, E.K.; Yuill, R.M.; Aleman, M.A.

1997-04-21T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

RELATING TREE PHYSIOLOGY TO PAST AND FUTURE CHANGES IN TROPICAL RAINFOREST TREE COMMUNITIES  

E-Print Network (OSTI)

Rate Determination for Tropical Trees, Harvard Forest, Petersham, MA, 1­3 April, 1980. Yale University

Coley, Phyllis

82

Parameterization of Canopy Structure and Leaf-Level Gas Exchange for an Eastern Amazonian Tropical Rain Forest (Tapajós National Forest, Pará, Brazil)  

Science Conference Proceedings (OSTI)

Carbon flux of Amazonian primary forest vegetation has been shown to vary both spatially and temporally. Process-based models are adequate tools to understand the basis of such variation and can also provide projections to future scenarios. The ...

Tomas F. Domingues; Joseph A. Berry; Luiz A. Martinelli; Jean P. H. B. Ometto; James R. Ehleringer

2005-10-01T23:59:59.000Z

83

Carbon finance, tropical forests and the state : governing international climate risk in the Democratic Republic of Congo  

E-Print Network (OSTI)

This thesis examines how evolving norms of international climate change mitigation are translated into national forest governance policies and land management techniques in the Democratic Republic of Congo (DRC). The ...

Gray, Ian P

2012-01-01T23:59:59.000Z

84

NPP Grassland: Nairobi, Kenya  

NLE Websites -- All DOE Office Websites (Extended Search)

Nairobi, Kenya, 1984-1994 Nairobi, Kenya, 1984-1994 [PHOTOGRAPH] Photograph: Canopy reflectance measurement within the Nairobi site (click on the photo to view a series of images from this site. Data Citation Cite this data set as follows: Kinyamario, J. I. 1996. NPP Grassland: Nairobi, Kenya, 1984-1994. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Net primary production of a savanna grassland in Nairobi National Park, Kenya, was determined from 1984 to the present by monitoring monthly dynamics of live biomass and dead matter, above and below-ground, together with monthly litter bag estimates of decomposition rates above and below-ground. The method for calculating net primary production accounted

85

NPP Grassland: Khomutov, Ukraine  

NLE Websites -- All DOE Office Websites (Extended Search)

Khomutov, Ukraine, 1948-1970 Khomutov, Ukraine, 1948-1970 Data Citation Cite this data set as follows: Gilmanov, T. G. 1996. NPP Grassland: Khomutov, Ukraine, 1948-1970. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a "typical" steppe was determined at the Khomutovskaya Ukrainian Steppe Natural Reserve in Donezk Region, from 1967 to 1970. Measurement of monthly dynamics of above-ground plant biomass were made for each growing season (April-August/September). Cumulative above-ground net primary production was estimated for each year. These data are part of a series of a series of grassland data sets recently assembled and checked by Dr. Tagir Gilmanov. These data sets cover a wide range of climate and

86

NPP Grassland: Calabozo, Venezuela  

NLE Websites -- All DOE Office Websites (Extended Search)

Calabozo, Venezuela, 1969-1987 Calabozo, Venezuela, 1969-1987 [PHOTOGRAPH] Photograph: General view of the Trachypogon savanna at Calabozo (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: San Jose, J., and R. A. Montés. 1998. NPP Grassland: Calabozo, Venezuela, 1969-1987. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a humid savanna was determined at the Estacion Biologica de Los Llanos, Calabozo, beginning in 1969. Much of the research work at this site has been carried out by staff from, or in association with, the Ecology Centre of the Venezuelan Institute for Scientific Research (Centro de Ecologia, Instituto Venezolano de Investigaciones Cientificas - IVIC).

87

NPP Grassland: Otradnoe, Russia  

NLE Websites -- All DOE Office Websites (Extended Search)

Otradnoe, Russia, 1969-1973 Otradnoe, Russia, 1969-1973 Data Citation Cite this data set as follows: Gilmanov, T. G. 1996. NPP Grassland: Otradnoe, Russia, 1969-1973. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description The productivities of two meadows (i.e., one loamy soil, one sandy soil) were determined at the Otradnoe study site from 1969 to 1973. Measurements of monthly dynamics of above-ground and below-ground plant biomass were made for each growing season (April-October). Above-ground net primary production was estimated for each year. These data are part of a series of grassland data sets recently assembled and checked by Dr. Tagir Gilmanov, which cover a wide range of climate and "continentality" (increasing

88

NPP Grassland: Dzhanybek, Kazakhstan  

NLE Websites -- All DOE Office Websites (Extended Search)

Dzhanybek, Kazakhstan, 1955-1989 Dzhanybek, Kazakhstan, 1955-1989 [PHOTOGRAPH] Photograph: Termite mound at Dzhanybek (click on the photo to view a larger image from this site). Data Citation Cite this data set as follows: Gilmanov, T. G. 1997. NPP Grassland: Dzhanybek, Kazakhstan, 1955-1989. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a semi-desert steppe was determined at the Dzhanybek Research Station in Kazakhstan, between 1955 and 1989. These data are part of a series of grassland data sets recently assembled and checked by Dr. Tagir Gilmanov. These data sets cover a wide range of climate and "continentality" (increasing maximum summer temperatures, decreasing

89

NPP Grassland: Tumentsogt, Mongolia  

NLE Websites -- All DOE Office Websites (Extended Search)

Tumentsogt, Mongolia, 1982-1990 Tumentsogt, Mongolia, 1982-1990 Data Citation Cite this data set as follows: Togtohyn, C., and D. Ojima. 1996. NPP Grassland: Tumentsogt, Mongolia, 1982-1990. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a steppe grassland was studied at the Tumentsogt Research Station of the Mongolian Academy of Science from 1982 to 1990. Measurements were made of peak above-ground live biomass for each year. The study site is located on the Eastern Mongolian Plains of the Tumentsogt sub-region (47.4 N 112.5 E), in Sukhbaatar administrative region. The Mongolian steppe occupies a major part of eastern Mongolia and northern China, characterized by an arid continental climate with most rain falling

90

NPP Grassland: Shortandy, Kazakhstan  

NLE Websites -- All DOE Office Websites (Extended Search)

Shortandy, Kazakhstan, 1975-1980 Shortandy, Kazakhstan, 1975-1980 [PHOTOGRAPH] Photograph: Virgin typical steppe at the Shortandy grassland study site (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Gilmanov, T. G. 1996. NPP Grassland: Shortandy, Kazakhstan, 1975-1980. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a dry steppe was determined at the Shortandy study site from 1975 to 1980. Measurement of monthly dynamics of above and below-ground live biomass and dead matter were made for each growing season (April-September). Cumulative above-ground net primary production was estimated. These data are part of a series of grassland data sets recently

91

NPP Grassland: Matador, Canada  

NLE Websites -- All DOE Office Websites (Extended Search)

Matador, Canada, 1968-1971 Matador, Canada, 1968-1971 [PHOTOGRAPH] Photograph: Field work in progress at the Matador site (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Coupland, R. T. 1999. NPP Grassland: Matador, Canada, 1968-1971. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a mixed prairie grassland was monitored at the Matador Field Station from 1968 through 1972. Monthly measurements of above-ground standing live and dead biomass and litter were made starting in either March or April and ending in October or November of each year. Root biomass was also measured. Untreated, burned, irrigated, fertilized, and grazed

92

NPP Grassland: Charleville, Australia  

NLE Websites -- All DOE Office Websites (Extended Search)

Charleville, Australia, 1973-1974 Charleville, Australia, 1973-1974 Data Citation Cite this data set as follows: Christie, E. K. 1999. NPP Grassland: Charleville, Australia, 1973-1974. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Above-ground and below-ground productivity of a native C3 grassland and an introduced C4 grassland were studied from 1973 to 1974 near Charleville in southern Queensland, north-east Australia. The study was carried out with a view to parameterising a simulation model of primary production and livestock carrying capacity. Measurements of above-ground and below-ground standing crop (live + dead matter) were made every 2 weeks during the growing seasons - otherwise

93

NPP Grassland: Montecillo, Mexico  

NLE Websites -- All DOE Office Websites (Extended Search)

Montecillo, Mexico, 1984-1994 Montecillo, Mexico, 1984-1994 [PHOTOGRAPH] Photograph: Quadrat sampling of above-ground biomass at the Montecillo site (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Garcia-Moya, E. 1996. NPP Grassland: Montecillo, Mexico, 1984-1994. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Net primary production of a saline grassland was determined at the Montecillo study site belonging to Colegio de Postgraduados, Texcoco, near Mexico City. Monthly dynamics of live biomass and dead matter, above and below-ground, were monitored from 1984 to the present, together with monthly litter bag estimates of decomposition rates above and below-ground.

94

NPP Grassland: Badkhyz, Turkmenistan  

NLE Websites -- All DOE Office Websites (Extended Search)

Badkhyz, Turkmenistan, 1948-1982 Badkhyz, Turkmenistan, 1948-1982 [PHOTOGRAPH] Photograph: Litter decomposition experiment at Badkhyz (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Gilmanov, T. G. 1998. NPP Grassland: Badkhyz, Turkmenistan, 1948-1982. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of an ephemeral desert grassland was determined at the Badkhyz Nature Reserve Station in southern Turkmenistan between 1948 and 1982. These data are part of a series of a series of grassland data sets recently assembled and checked by Dr. Tagir Gilmanov, which cover a wide range of climate and "continentality" (increasing maximum summer temperatures,

95

NPP Grassland: Tumugi, China  

NLE Websites -- All DOE Office Websites (Extended Search)

Tumugi, China, 1981-1990 Tumugi, China, 1981-1990 Data Citation Cite this data set as follows: Xiao, X., and D. Ojima. 1999. NPP Grassland: Tumugi, China, 1981-1990. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass dynamics and productivity of meadow steppe grasslands were studied from 1981 to 1990 at Tumugi, Xingan League, in eastern Inner Mongolia, China. Measurements of above-ground and below-ground live biomass were made monthly throughout the growing season (April to November), by clipping 1 m2 quadrats and sampling 1 m2 soil pits to a depth of 1.0 m. The Tumugi study site (approximately 46.1 N 123.0 E) is located about 60 km east of the city of Ulan Hot (approximately 300 km west of Harbin, China).

96

NPP and Driver Data for Ecosystem  

NLE Websites -- All DOE Office Websites (Extended Search)

EMDI Data Revised Data Set: NPP Multi-Biome: NPP and Driver Data for Ecosystem Model-Data Intercomparison Effective Date of Revision: June 17, 2004 Data Set Citation: Olson, R. J.,...

97

NPP and Vegetation Data Sets Available  

NLE Websites -- All DOE Office Websites (Extended Search)

Vegetation Data Sets Available The ORNL DAAC announces the availability of three new net primary production (NPP) and two vegetation data sets. The NPP data sets contain data for...

98

Effect of CH4 and O2 variations on rates of CH4 oxidation and stable isotope fractionation in tropical rain forest soils  

Science Conference Proceedings (OSTI)

Methane-oxidizing bacteria are the primary sink for CH{sub 4} in reduced soils, and account for as much as 90 percent of all CH{sub 4} produced. Methanotrophic bacteria strongly discriminate against the heavy isotopes of carbon, resulting in CH{sub 4} emissions that are significantly more enriched in {sup 13}C than the original source material. Previous studies have used an isotope mass balance approach to quantify CH{sub 4} sources and sinks in the field, based on the assumption that the fractionation factor for CH{sub 4} oxidation is a constant. This study quantifies the effect of systematic variations in CH{sub 4} and O{sub 2} concentrations on rates of CH{sub 4} oxidation and stable isotope fractionation in tropical rain forest soils. Soils were collected from the 0-15 cm depth, and incubated with varying concentrations of CH{sub 4} (100 ppmv, 500 ppmv, 1000 ppmv, and 5000 ppmv) or O{sub 2} (3 percent, 5 percent, 10 percent, and 21 percent). The isotope fractionation factor for CH{sub 4} oxidation was calculated for each incubation using a Rayleigh fractionation model. Rates of CH{sub 4} oxidation varied significantly between CH{sub 4} treatments, with the 100 ppmv CH{sub 4} treatment showing the lowest rate of CH{sub 4} uptake, and the other 3 treatments showing similar rates of CH{sub 4} uptake. Rates of CH{sub 4} oxidation did not vary significantly between the different O{sub 2} treatments. The fractionation factor for CH{sub 4} oxidation varied significantly between the different CH{sub 4} treatments, with the 5000 ppmv CH{sub 4} treatment showing the largest {sup 13}C-enrichment of residual CH{sub 4}. In treatments where CH{sub 4} concentration was not rate-limiting (> 500 ppmv CH{sub 4}), the fractionation factor for CH{sub 4} oxidation was negatively correlated with CH{sub 4} oxidation rate (P activity or CH{sub 4} pool size.

Teh, Yit Arn; Conrad, Mark; Silver, Whendee L.; Carlson, Charlotte M.

2003-10-01T23:59:59.000Z

99

NPP Principal Investigators and Reviewers  

NLE Websites -- All DOE Office Websites (Extended Search)

Principal Investigators and Reviewers Principal Investigators and Reviewers Where possible, the original principal investigator or his/her successor has been contacted to review the net primary productivity (NPP) data and documentation. All those who have assisted with the development of the ORNL DAAC NPP database by contributing or reviewing its contents are gratefully acknowledged. The following list is not comprehensive; there are many others who have provided additional data or useful feedback on the format and structure of the database, but we can at least acknowledge the following persons: Grassland Sites: Bill Lauenroth, Colorado State University, USA billl@cnr.colostate.edu Bill Parton, Colorado State University, USA billp@nrel.colostate.edu Pablo Roset, University of Buenos Aires, Argentina blopas@ifeva.edu.ar

100

Evironmental protection in Malaysia with sustainable forest management practices  

Science Conference Proceedings (OSTI)

Malaysia has achieved a very significant development socio-economically since independent in 1957. Large tracts of forest have been converted to give way to settlements and agricultural and industrial areas. Logging is still being carried out annually. ... Keywords: environmental protection, forest certification, forest harvesting, sustainable forest management, tropical forest resources

Dato'Hj Dahlan Hj. Taha; Hj. Kamaruzaman Jusoff

2008-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Dispersion Parameters over Forested Terrain  

Science Conference Proceedings (OSTI)

A unique set of micrometeorological data was obtained during a 1967–70 multidisciplinary environmental field program in a tropical forest environment. The program was under the sponsorship of the Advanced Research Project Agency (ARPA) and was ...

R. T. Pinker; J. Z. Holland

1988-11-01T23:59:59.000Z

102

Effect of CH4 and O2 variations on rates of CH4 oxidation and stable isotope fractionation in tropical rain forest soils  

SciTech Connect

Methane-oxidizing bacteria are the primary sink for CH{sub 4} in reduced soils, and account for as much as 90 percent of all CH{sub 4} produced. Methanotrophic bacteria strongly discriminate against the heavy isotopes of carbon, resulting in CH{sub 4} emissions that are significantly more enriched in {sup 13}C than the original source material. Previous studies have used an isotope mass balance approach to quantify CH{sub 4} sources and sinks in the field, based on the assumption that the fractionation factor for CH{sub 4} oxidation is a constant. This study quantifies the effect of systematic variations in CH{sub 4} and O{sub 2} concentrations on rates of CH{sub 4} oxidation and stable isotope fractionation in tropical rain forest soils. Soils were collected from the 0-15 cm depth, and incubated with varying concentrations of CH{sub 4} (100 ppmv, 500 ppmv, 1000 ppmv, and 5000 ppmv) or O{sub 2} (3 percent, 5 percent, 10 percent, and 21 percent). The isotope fractionation factor for CH{sub 4} oxidation was calculated for each incubation using a Rayleigh fractionation model. Rates of CH{sub 4} oxidation varied significantly between CH{sub 4} treatments, with the 100 ppmv CH{sub 4} treatment showing the lowest rate of CH{sub 4} uptake, and the other 3 treatments showing similar rates of CH{sub 4} uptake. Rates of CH{sub 4} oxidation did not vary significantly between the different O{sub 2} treatments. The fractionation factor for CH{sub 4} oxidation varied significantly between the different CH{sub 4} treatments, with the 5000 ppmv CH{sub 4} treatment showing the largest {sup 13}C-enrichment of residual CH{sub 4}. In treatments where CH{sub 4} concentration was not rate-limiting (> 500 ppmv CH{sub 4}), the fractionation factor for CH{sub 4} oxidation was negatively correlated with CH{sub 4} oxidation rate (P < 0.003, r{sup 2} = 0.86). A multiple regression model that included initial CH{sub 4} concentration and CH{sub 4} oxidation rate as independent variables accounted for 94 percent of the variability in the isotope fractionation data, suggesting that both factors are important in determining the extent of isotopic fractionation (P < 0.002, r{sup 2} = 0.94). The fractionation factor for CH{sub 4} oxidation did not vary significantly between the different O{sub 2} treatments. These results challenge the assumption that the isotope fractionation factor for CH{sub 4} oxidation remains constant, regardless of metabolic activity or CH{sub 4} pool size.

Teh, Yit Arn; Conrad, Mark; Silver, Whendee L.; Carlson, Charlotte M.

2003-10-01T23:59:59.000Z

103

NPP Grassland: Lamto, Ivory Coast  

NLE Websites -- All DOE Office Websites (Extended Search)

Lamto, Ivory Coast, 1965-1987 Lamto, Ivory Coast, 1965-1987 [PHOTOGRAPH] Photograph: A storm during the rainy season at Lamto (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Menaut, J.-C. 1996. NPP Grassland: Lamto, Ivory Coast, 1965-1987. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a humid grass savanna was determined at the Lamto study site operated in collaboration with CNRS (Centre Nationale de Recherche Scientifique) - É Normale Supé Paris, France. Measurement of monthly dynamics of above-ground plant matter (i.e., live biomass and dead matter for some years, total biomass in other years), and total roots (live +

104

NPP Grassland: Rio Mayo, Argentina  

NLE Websites -- All DOE Office Websites (Extended Search)

Rio Mayo, Argentina, 1983-1989 Rio Mayo, Argentina, 1983-1989 Data Citation Cite this data set as follows: Sala, O. E. 2001. NPP Grassland: Rio Mayo, Argentina, 1983-1989. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of the Patagonian steppe in Argentina was determined at Rio Mayo, beginning in 1983. Biomass dynamics of grasses were monitored quarterly for one year, and above-ground net primary productivity (ANPP) was estimated for other years based upon peak biomass. The Rio Mayo study site (45.68 S 70.27 W) is situated in south-western Chubut, typical of the temperate dry steppe of South America, with extremely low rainfall. Patagonia is a large region of 500,000 km2, and few

105

NPP Grassland: Towoomba, South Africa  

NLE Websites -- All DOE Office Websites (Extended Search)

Towoomba, South Africa, 1949-1990 Towoomba, South Africa, 1949-1990 [PHOTOGRAPH] Photograph: General view of study site at Towoomba (click on the photo to view a larger image from this site). Data Citation Cite this data set as follows: Scholes, R. J. 1998. NPP Grassland: Towoomba, South Africa, 1949-1990. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of an artificially-established grass savanna was monitored at the Towoomba study site, under a long-term experiment to test the long-term effect of fertilizer application. Peak above-ground biomass was monitored for each treatment, from 1950 to the present. The Towoomba agricultural research station (24.90 S 28.35 E) is situated

106

NPP Grassland: Nylsvley, South Africa  

NLE Websites -- All DOE Office Websites (Extended Search)

Nylsvley, South Africa, 1974-1989 Nylsvley, South Africa, 1974-1989 [PHOTOGRAPH] Photograph: Fine-leaved savanna at Nylsvley (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Scholes, R. J. 1997. NPP Grassland: Nylsvley, South Africa, 1974-1989. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a broad-leaved savanna, which includes a substantial grass component (i.e. 60-70% of cover), was monitored from 1974 to the present at the Nylsvley study site, under the South African Savanna Biome Programme. The Nylsvley study site (24.65 S 28.70 E) is situated 200 km north of Johannesburg, near the town of Nylstroom. The 800 hectare savanna research

107

Superior National Forest Project/Campaign Document  

NLE Websites -- All DOE Office Websites (Extended Search)

Superior National Forest Project/Campaign Document Superior National Forest Project/Campaign Document Summary: This project was an intensive remote sensing and field study of the boreal forest in the Superior National Forest (SNF). The purpose of this experiment was to investigate the ability of remote-sensing data to provide estimates of biophysical properties of ecosystems, such as leaf area index (LAI), biomass, and net primary productivity (NPP). The SNF is mostly covered by boreal forest. Boreal forests were chosen for this project because of their relative taxonomic simplicity, their great extent, and their potential sensitivity to climatic change. Information on the SNF project is available by accessing the SNF pages maintained by the ORNL DAAC at http://daac.ornl.govSNF/summary.html. Table of Contents:

108

ORNL DAAC NPP TEMPERATE FOREST: HUMBOLDT REDWOODS STATE PARK...  

NLE Websites -- All DOE Office Websites (Extended Search)

data include site characteristics, redwood stand descriptors, and measured and calculated biomass and ANPP data. In 1972, Dr. Fujimori placed a 120 x 120 m plot (1.44 ha) in a...

109

Forest Monitoring for Action (FORMA) | Open Energy Information  

Open Energy Info (EERE)

Forest Monitoring for Action (FORMA) Forest Monitoring for Action (FORMA) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Forest Monitoring for Action (FORMA) Agency/Company /Organization: Center for Global Development Sector: Land, Climate Focus Area: Forestry Topics: GHG inventory, Resource assessment Resource Type: Maps Website: www.cgdev.org/section/initiatives/_active/forestmonitoringforactionfor Cost: Free Forest Monitoring for Action (FORMA) Screenshot References: FORMA[1] "Forest Monitoring for Action (FORMA) uses freely available satellite data to generate rapidly updated online maps of tropical forest clearing, providing useful information for local and national forest conservation programs, as well as international efforts to curb greenhouse gas emissions by paying to keep forests intact."

110

NPP Grassland: Vindhyan, India [Uttar Pradesh]  

NLE Websites -- All DOE Office Websites (Extended Search)

Vindhyan, India, 1986-1989 Vindhyan, India, 1986-1989 Data Citation Cite this data set as follows: Pandey, C. B., and J. S. Singh. 1997. NPP Grassland: Vindhyan, India, 1986-1989. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Net primary productivity (NPP) was determined for three derived savanna study sites (Ranitali, Hathinala, Telburva) on the Vindhyan plateau in Uttar Pradesh, northern India, from 1986 to 1989. Monthly dynamics of above-ground plant biomass (and below-ground, to 10 cm) were measured at each site for two annual cycles (1986/87 and 1987/88), for grazed and ungrazed plots of 1-3 hectares, and in temporarily fenced plots for one year (1987/88). Above-ground NPP was estimated using trough-peak analysis

111

Comparisons of Interception Loss from Tropical and Temperate Vegetation Canopies  

Science Conference Proceedings (OSTI)

A multilayer crop model is used to investigate interception loss from oak, pine, wheat and grass canopies. It is shown that the evaporative properties of the full oak canopy are similar to those of the evergreen tropical rain forest. Evaporation ...

J. G. Lockwood; P. J. Sellers

1982-10-01T23:59:59.000Z

112

Use of lidar data to simulate forest net primary production  

Science Conference Proceedings (OSTI)

A method has been recently presented to predict the net primary production NPP of Mediterranean forests by integrating conventional and remote-sensing data. This method was based on the use of two models, C-Fix and BIOME-BGC, whose outputs are combined ...

Fabio Maselli; Riccardo Mari; Marta Chiesi

2013-04-01T23:59:59.000Z

113

Measuring Woody Encroachment along a Forest–Savanna Boundary in Central Africa  

Science Conference Proceedings (OSTI)

Changes in net area of tropical forest are the sum of several processes: deforestation, regeneration of previously deforested areas, and the changing spatial location of the forest–savanna boundary. The authors conducted a long-term (1986–2006) ...

E. T. A. Mitchard; S. S. Saatchi; F. F. Gerard; S. L. Lewis; P. Meir

2009-08-01T23:59:59.000Z

114

Use of Forest Inventories and Geographic Information Systems To Estimate  

NLE Websites -- All DOE Office Websites (Extended Search)

Appendix B: Use of Forest Inventories and Geographic Information Systems To Appendix B: Use of Forest Inventories and Geographic Information Systems To Estimate Biomass Density of Tropical Forests: Application to Tropical Africa S. Brown and G. Gaston U.S. Environmental Protection Agency, 200 SW 35th St., Corvalis, OR 97333, USA Abstract One of the most important databases needed for estimating emissions of carbon dioxide resulting from changes in the cover, use, and management of tropical forests is the total quantity of biomass per unit area, referred to as biomass density. Forest inventories have been shown to be valuable sources of data for estimating biomass density, but inventories for the tropics are few in number and their quality is poor. This lack of reliable data has been overcome by use of a promising approach that produces

115

NPP Grassland: Klong Hoi Khong, Thailand  

NLE Websites -- All DOE Office Websites (Extended Search)

of Grass Ecosystems of the Tropics" and has continued under subsequent UNEP and Thai-Austrian research projects. The study site of several hectares is situated within a...

116

NPP Grassland: Pampa de Leman, Argentina  

NLE Websites -- All DOE Office Websites (Extended Search)

Pampa de Leman, Argentina, 1980-1982 Pampa de Leman, Argentina, 1980-1982 [PHOTOGRAPH] Photograph: Close-up view of the Pampa de Leman site (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Bertiller, M. 1998. NPP Grassland: Pampa De Leman, Argentina, 1980-1982. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a dwarf-shrub steppe was studied at the Pampa de Leman site, Estancia Kü in Chubut (Northern Patagonia), Argentina, during 1980-1982. Dynamics of above-ground biomass, dead matter and litter were monitored at monthly or bi-monthly intervals, and NPP was estimated. An area of 1.5 hectares was protected from sheep grazing at the study site,

117

NPP and the Global Carbon Cycle  

NLE Websites -- All DOE Office Websites (Extended Search)

the Global Carbon Cycle the Global Carbon Cycle Introduction Photosynthetic carbon fixation comprises a major component of the global carbon cycle. Data on net primary productivity (NPP) may be sparse, but a consistent NPP data set may be used to calibrate, parameterize and evaluate models of terrestrial carbon cycling, as well as for validation of remote sensing data and other applications (identifying trends, investigating biogeochemical processes, etc.). It is also useful to place such data within the context of carbon cycling and carbon storage worldwide. For example: How much carbon exists in the biosphere, and where exactly is it stored? How much is in fossil fuels (coal, oil, gas), and how large are current fossil-fuel emissions? How much is in living biomass (plants/ animals/ humans)?

118

NPP Multi-Biome: Gridded Estimates for Selected Regions Worldwide...  

NLE Websites -- All DOE Office Websites (Extended Search)

Change Information Data Set: NPP Multi-Biome: Gridded Estimates for Selected Regions Worldwide, 1989-2001, Revision2 Effective Date of Revision: September 22, 2004 Data Set...

119

BigFoot GPP and NPP Summaries, 2000-2004  

NLE Websites -- All DOE Office Websites (Extended Search)

GPP and NPP Summaries, 2000-2004 GPP and NPP Summaries, 2000-2004 Reflectance data from MODIS, the Moderate Resolution Imaging Spectrometer onboard NASA's Earth Observing System (EOS) satellite Terra ( http://landval.gsfc.nasa.gov/MODIS/index.html ), is used to produce several science products including land cover, leaf area index (LAI), gross primary production (GPP) and net primary production (NPP). The overall goal of the BigFoot Project was to provide validation of these products. Background information on the BigFoot Project is available at: http://www.fsl.orst.edu/larse/bigfoot/index.html. A set of NPP/GPP summary figures was developed for each of the 9 BigFoot sites. Each set contains images and figures associated with creating the BigFoot NPP and GPP products, comparing them to MODIS products, and

120

Tropical Africa: Calculated Actual Aboveground Live Biomass in Open and  

NLE Websites -- All DOE Office Websites (Extended Search)

Calculated Actual Aboveground Live Biomass in Open and Calculated Actual Aboveground Live Biomass in Open and Closed Forests (1980) image Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNL/CDIAC-92, NDP-055. Carbon Dioxide Information Analysis Center, U.S. Department of Energy, Oak Ridge National Laboratory, Oak Ridge, Tennessee, U.S.A. More Maps Land Use Maximum Potential Biomass Density Area of Closed Forests (By Country) Mean Biomass of Closed Forests (By Country) Area of Open Forests (By Country) Mean Biomass of Open Forests (By County) Percent Forest Cover (By Country) Total Forest Biomass (By Country) Population Density - 1990 (By Administrative Unit) Population Density - 1980 (By Administrative Unit) Population Density - 1970 (By Administrative Unit) Population Density - 1960 (By Administrative Unit)

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

NPP Grassland: Tullgarnsnäset, Sweden  

NLE Websites -- All DOE Office Websites (Extended Search)

Tullgarnsnäset, Sweden, 1968-1969 Tullgarnsnäset, Sweden, 1968-1969 Data Citation Cite this data set as follows: Wallentinus, H. G., and G. Tyler. 1997. NPP Grassland: Tullgarnsnäset, Sweden, 1968-1969. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a sea-shore meadow was studied from 1968 to 1969 at Tullgarnsnäset, near Stockholm, Sweden. Measurements of above-ground live biomass and total dead matter were made approximately monthly. Below-ground biomass was measured, but data were not reported. Above-ground net primary production was estimated by several methods, including peak total live and dead, and accounting for mortality determined by several different methods.

122

NPP Grassland: Beacon Hill, U.K.  

NLE Websites -- All DOE Office Websites (Extended Search)

Beacon Hill, U.K., 1972-1973 Beacon Hill, U.K., 1972-1973 [PHOTOGRAPH] Photograph: General view of study site in 1973 (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Williamson, P., and J. Pitman. 1998. NPP Grassland: Beacon Hill, U.K., 1972-1973. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a chalk grassland was studied from 1972 to 1973 at Beacon Hill, West Sussex, U.K. Measurements of above-ground live biomass and total dead matter were made approximately bi-monthly. Above-ground net primary production was estimated by several methods, including peak live biomass, peak total live and dead, and accounting for turnover determined from

123

NPP Grassland: Dickinson, U.S.A.  

NLE Websites -- All DOE Office Websites (Extended Search)

Dickinson, U.S.A., 1970 Dickinson, U.S.A., 1970 [PHOTOGRAPH] Photograph: Washing root samples at the Dickinson site (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Whitman, W., and W. K. Lauenroth. 1998. NPP Grassland: Dickinson, U.S.A., 1970. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a northern mixed prairie grassland was monitored at the Dickinson study site during 1970. Dynamics of above-ground plant biomass were monitored at roughly 2-week intervals during the growing season. Data on above-ground live biomass, standing dead matter and litter are available, for two replications of a grazed and an "ungrazed" (relatively

124

First-Light Imagery from Suomi NPP VIIRS  

Science Conference Proceedings (OSTI)

The Suomi National Polar-Orbiting Partnership (NPP) satellite was launched on 28 October 2011, heralding the next generation of operational U.S. polar-orbiting satellites. It carries the Visible– Infrared Imaging Radiometer Suite (VIIRS), a 22-band ...

Donald Hillger; Thomas Kopp; Thomas Lee; Daniel Lindsey; Curtis Seaman; Steven Miller; Jeremy Solbrig; Stanley Kidder; Scott Bachmeier; Tommy Jasmin; Tom Rink

2013-07-01T23:59:59.000Z

125

ORNL DAAC, Net Primary Productivity Data, Feb. 5, 2003  

NLE Websites -- All DOE Office Websites (Extended Search)

Compilation Available Compilation Available The ORNL DAAC announces the release of a Net Primary Productivity (NPP) compilation that brings together individual detailed site NPP data from the ORNL DAAC holdings in a form that is especially useful for comparative study and ecosystem modeling. "NPP Multi-Biome: Grassland, Boreal Forest, and Tropical Forest Sites, 1939-1996" offers NPP estimates, vegetation type, and climate information for 53 sites in the ORNL DAAC archive. Selection of the sites was originally based on the availability of consistent NPP and biomass data from the literature. The data set encompasses 34 grasslands, 14 tropical forest sites, and 5 boreal forest sites. Half of the sites include estimates of belowground NPP. Visit the NPP project page to access the NPP data and documentation

126

Atlantic Tropical Systems of 1988  

Science Conference Proceedings (OSTI)

.The 1988 season produced 62 tropical waves, 19 tropical depressions and 12 tropical storms, 5 of which became hurricanes. Eighty-three percent of the tropical storms developed from African waves. A comparison with the past 21 years is included.

Lixion A. Avila; Gilbert B. Clark

1989-10-01T23:59:59.000Z

127

Baroclinically Induced Tropical Cyclogenesis  

Science Conference Proceedings (OSTI)

The authors investigate the transition of numerous subtropical cyclones into late season tropical storms and hurricanes during the 2000 and 2001 Atlantic tropical cyclone seasons. In all transitioning cases (10), the 900–200-hPa wind shear was ...

Christopher A. Davis; Lance F. Bosart

2003-11-01T23:59:59.000Z

128

Tropical observability and predictability  

E-Print Network (OSTI)

Many studies have investigated tropical data assimilation in the context of global models or specifically for tropical cyclones, but relatively few have focused on the mesoscale predictability and observability of the ...

Whitcomb, Timothy Robert

2008-01-01T23:59:59.000Z

129

Modeling Regional Vegetation NPP Variations and Their Relationships with Climatic Parameters in Wuhan, China  

Science Conference Proceedings (OSTI)

Net primary productivity (NPP) is an important component of the carbon cycle and a key indicator of ecosystem performance. The aim of this study is to construct a more accurate regional vegetation NPP estimation model and explore the relationship ...

Lunche Wang; Wei Gong; Yingying Ma; Miao Zhang

2013-05-01T23:59:59.000Z

130

ARM - Black Forest News  

NLE Websites -- All DOE Office Websites (Extended Search)

GermanyBlack Forest News Black Forest Deployment AMF Home Black Forest Home Data Plots and Baseline Instruments CERA COPS Data University of Hohenheim COPS Website COPS Update,...

131

Seasonal tropical cyclone forecasts  

E-Print Network (OSTI)

Seasonal forecasts of tropical cyclone activity in various regions have been developed since the first attempts in the early 1980s by Neville

Suzana J. Camargo; Anthony G. Barnston; Philip J. Klotzbach; Christopher W. Landsea

2007-01-01T23:59:59.000Z

132

Information Forests  

E-Print Network (OSTI)

We describe Information Forests, an approach to classification that generalizes Random Forests by replacing the splitting criterion of non-leaf nodes from a discriminative one -- based on the entropy of the label distribution -- to a generative one -- based on maximizing the information divergence between the class-conditional distributions in the resulting partitions. The basic idea consists of deferring classification until a measure of "classification confidence" is sufficiently high, and instead breaking down the data so as to maximize this measure. In an alternative interpretation, Information Forests attempt to partition the data into subsets that are "as informative as possible" for the purpose of the task, which is to classify the data. Classification confidence, or informative content of the subsets, is quantified by the Information Divergence. Our approach relates to active learning, semi-supervised learning, mixed generative/discriminative learning.

Yi, Zhao; Dewan, Maneesh; Zhan, Yiqiang

2012-01-01T23:59:59.000Z

133

The responses of net primary production (NPP) and total carbon storage for the continental United States to changes in atmospheric CO{sub 2}, climate, and vegetation  

Science Conference Proceedings (OSTI)

We extrapolated 3 biogeochemistry models (BIOME-BGC, CENTURY, and TEM) across the continental US with the vegetation distributions of 3 biogeography models (BIOME2, DOLY, and MAPSS) for contemporary climate at 355 ppmv CO{sub 2} and each of 3 GCM climate scenarios at 710 ppmv. For contemporary conditions, continental NPP ranges from 3132 to 3854 TgC/yr and total carbon storage ranges from 109 to 125 PgC. The responses of NPP range from no response (BIOME-BGC with DOLY or MAPSS vegetations for UKMO climate) to increases of 53% and 56% (TEM with BIOME2 vegetations for GFDL and OSU climates). The responses of total carbon storage vary from a decrease of 39% (BIOME-BGC with MAPSS vegetation for UKMO climate) to increases of 52% and 56% (TEM with BIOME2 vegetations for OSU and GFDL climates). The UKMO responses of BIOME-BGC with MAPSS vegetation are caused by both decreased forest area (from 44% to 38%) and photosynthetic water stress. The OSU and GFDL responses of TEM with BIOME2 vegetations are caused by forest expansion (from 46% to 67% for OSU and to 75% for GFDL) and increased nitrogen cycling.

McGuire, D.A. [Marine Biological Lab., Woods Hole, MA (United States)

1995-06-01T23:59:59.000Z

134

Why does air passage over forest yield more rain? Examining the coupling between rainfall, pressure and atmospheric moisture content  

Science Conference Proceedings (OSTI)

The influence of forest loss on rainfall remains poorly understood. Addressing this challenge Spracklen et al. recently presented a pan-tropical study of rainfall and land-cover that showed that satellite-derived rainfall measures were positively ...

A. M. Makarieva; V. G. Gorshkov; D. Sheil; A. D. Nobre; P. Bunyard; B.-L. Li

135

Nuclear Power Plant Fire Modeling Application Guide (NPP FIRE MAG)  

Science Conference Proceedings (OSTI)

There is a movement to introduce risk-informed and performance-based (RI/PB) analyses into fire protection engineering practice, both domestically and worldwide.  This movement exists in both the general fire protection and the nuclear power plant (NPP) fire protection communities.  The U.S. Nuclear Regulatory Commission (NRC) has used risk-informed insights as a part of its regulatory decision making since the 1990s.In 2001, the National Fire Protection Association (NFPA) ...

2012-11-30T23:59:59.000Z

136

Climate change and forests in India: note from the guest editors  

DOE Green Energy (OSTI)

Forestry is one of the most important sectors in the context of climate change. It lies at the center-stage of global mitigation and adaptation efforts. Yet, it is one of the least understood sectors, especially in tropical zones, which constitute a significant portion of the global forests. Recently, there has been a growing interest in forests in addressing global climate change. The IPCC Assessment Report 4 (2007) Chapters related to forests have highlighted the limited number of studies on the impact of climate change on forests at the regional, national and sub-national level, while policy makers need information at these scales. Further, implication of projected climate change on mitigation potential of forest sector is only briefly mentioned in the IPCC report, with limited literature to support the conclusions. India is one among the top ten nations in the world in terms of forest cover. It is also sixth among the tropical countries in terms of forested area. As IPCC Assessment Report 5 work is about to be initiated soon, studies on the impact of climate change on forests as well as the mitigation potential of the forest sector, particularly at regional and national level, will be of great interest to the scientific and policy community. In order to conserve the carbon stored in forests and to reduce CO2 emissions from the forest sector, the Reduced Emissions from Deforestation and Degradation (REDD) mechanism is now being finalized under the UNFCCC. In this context, climate change itself may affect the mitigation potential significantly, and it is important to understand how vulnerable the forest carbon stock (biomass and soil) in the tropics is to the projected climate change. In fact, there is a need to study the impact of climate change on forests for all the major forested countries

Ravindtranath, N.H.; Aaheim, Asbjporn

2010-12-23T23:59:59.000Z

137

Preparation for Early Termination of Ignalina NPP Operation  

Science Conference Proceedings (OSTI)

Seimas (Parliament of Lithuania) approved updated National Energy strategy where it is indicated that first Unit will be shutdown before the year 2005 and second Unit in 2009 if funding for decommissioning is available from EU and other donors. In accordance to Ignalina NPP Unit 1 Closure Law the Government of Lithuania approved the Ignalina NPP Unit 1 Decommissioning Program until year 2005. For enforcement of this program, the plan of measures for implementation of the program was prepared and approved by the Minister of Economy. The plan consists of two parts, namely technical- environmental and social-economic. Technical-environmental measures are mostly oriented to the safe management of spent nuclear fuel and operational radioactive waste stored at the plant and preparation of licensing documents for Unit 1 decommissioning. Social-economic measures are oriented to mitigate negative social and economic impact on Lithuania, inhabitants of the region, and, particularly, o n the staff of Ignalina NPP by means of creating favorable conditions for a balanced social and economic development of the region. In this paper analysis of planned activities, licensing requirements for decommissioning, progress in preparation of the Final Decommissioning Plan is discussed.

Poskas, P.; Poskas, R.

2003-02-26T23:59:59.000Z

138

Geographical Distribution of Biomass Carbon in Tropical Southeast Asian  

NLE Websites -- All DOE Office Websites (Extended Search)

Geographical Distribution of Biomass Carbon in Tropical Southeast Asian Geographical Distribution of Biomass Carbon in Tropical Southeast Asian Forests: A Database (NDP-068) DOI: 10.3334/CDIAC/lue.ndp068 data Data PDF PDF Appendix A is reprint of Brown et al. paper in Geocarto International, Vol. 8; copyright 1993 Geocarto International Centre and reprinted with kind permission from the publisher) image Contributors Sandra Brown1 Louis R. Iverson2 Anantha Prasad2 Department of Natural Resources and Environmental Sciences University of Illinois Urbana, Illinois 1Present address: Winrock International, Arlington, Virginia 2Present address: United States Forest Service, Northeast Research Station, Delaware, Ohio Prepared by Tammy W. Beaty, Lisa M. Olsen, Robert M. Cushman, and Antoinette L. Brenkert Carbon Dioxide Information Analysis Center

139

Integrating the Clearance in NPP Residual Material Management  

SciTech Connect

Previous Experiences in decommissioning projects are being used to optimize the residual material management in NPP, metallic scrap usually. The approach is based in the availability of a materials Clearance MARSSIM-based methodology developed and licensed in Spain. A typical project includes the integration of segregation, decontamination, clearance, quality control and quality assurance activities. The design is based in the clearance methodology features translating them into standard operational procedures. In terms of ecological taxes and final disposal costs, significant amounts of money could be saved with this type of approaches. The last clearance project managed a total amount of 405 tons scrap metal and a similar amount of other residual materials occupying a volume of 1500 m{sup 3}. After less than a year of field works 251 tons were finally recycled in a non-licensed smelting facility. The balance was disposed as LILW. In the planning phase the estimated cost savings were 4.5 Meuro. However, today a VLLW option is available in European countries so, the estimated cost savings are reduced to 1.2 Meuro. In conclusion: the application of materials clearance in NPP decommissioning lessons learnt to the NPP residual material management is an interesting management option. This practice is currently going on in Spanish NPP and, in a preliminary view, is consistent with the new MARSAME Draft. An interesting parameter is the cost of 1 m3 of recyclable scrap. The above estimates are very project specific because in the segregation process other residual materials were involved. If the effect of this other materials is removed the estimated Unit Cost were in this project around 1700 euro/m{sup 3}, this figure is clearly below the above VLLW disposal cost of 2600 euro. In a future project it appears feasible to descend to 839 euro/m{sup 3} and if it became routine values and is used in big Decommissioning projects, around 600 euro/m{sup 3} or below possibly could be achieved. A rough economical analysis permits to estimate a saving around 2000 US$ to 13000 US$ per cubic meter of steel scrap according the variability of materials and disposal costs. Many learnt lessons of this practice were used as a feed back in the planning of characterization activities for decommissioning a Spanish NPP and today are considered as a significant reference in our Decommissioning engineering approaches.

Garcia-Bermejo, R.; Lamela, B. [Iberdrola Ingenieria y Construccion, Jose Bardasano Baos 28036, Madrid (Spain)

2008-01-15T23:59:59.000Z

140

Clouds in Tropical Cyclones  

Science Conference Proceedings (OSTI)

Clouds within the inner regions of tropical cyclones are unlike those anywhere else in the atmosphere. Convective clouds contributing to cyclogenesis have rotational and deep intense updrafts but tend to have relatively weak downdrafts. Within ...

Robert A. Houze Jr.

2010-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Clouds in Tropical Cyclones  

Science Conference Proceedings (OSTI)

Clouds within the inner regions of tropical cyclones are unlike those anywhere else in the atmosphere. Convective clouds contributing to cyclogenesis have rotational and deep intense updrafts but tend to have relatively weak downdrafts. Within the ...

Robert A. Houze Jr.

2010-02-01T23:59:59.000Z

142

A Tropical Cyclone Genesis Parameter for the Tropical Atlantic  

Science Conference Proceedings (OSTI)

A parameter to evaluate the potential for tropical cyclone formation (genesis) in the North Atlantic between Africa and the Caribbean islands is developed. Climatologically, this region is the source of about 40% of the Atlantic basin tropical ...

Mark DeMaria; John A. Knaff; Bernadette H. Connell

2001-04-01T23:59:59.000Z

143

Tropical Cyclone Formation  

Science Conference Proceedings (OSTI)

The physics of tropical cyclone formation is not well understood, and more is known about the mature hurricane than the formative mechanisms that produce it. It is believed part of the reason for this can be traced to insufficient upper-level ...

Michael T. Montgomery; Brian F. Farrell

1993-01-01T23:59:59.000Z

144

Tropical Cyclone Cloudbands  

Science Conference Proceedings (OSTI)

The outer cloudband structure of a tropical cyclone is kinematically treated as the manifestation of a forced set of waves stationary with respect to the cyclone. When the cyclone wind field is modeled as a Rankine vortex and the cloudbands are ...

Tom Beer; L. Giannini

1980-07-01T23:59:59.000Z

145

Tropical Cyclone Eye Thermodynamics  

Science Conference Proceedings (OSTI)

In intense tropical cyclones, sea level pressures at the center are 50–100 hPa lower than outside the vortex, but only 10–30 hPa of the total pressure fall occurs inside the eye between the eyewall and the center. Warming by dry subsidence ...

H. E. Willoughby

1998-12-01T23:59:59.000Z

146

Tropical Cyclone Eye Dynamics  

Science Conference Proceedings (OSTI)

A new perspective of the dynamics of a tropical cyclone eye is given in which eye subsidence and the adiabatic warming accompanying it are accounted for directly from the equations of motion. Subsidence is driven by an adverse, axial gradient of ...

R. K. Smith

1980-06-01T23:59:59.000Z

147

Climate mitigation and the future of tropical landscapes  

Science Conference Proceedings (OSTI)

Land use change to meet 21st Century demands for food, fuel, and fiber will occur in the context of both a changing climate as well as societal efforts to mitigate climate change. This changing natural and human environment will have large consequences for forest resources, terrestrial carbon storage and emissions, and food and energy crop production over the next century. Any climate change mitigation policies enacted will change the environment under which land-use decisions are made and alter global land use change patterns. Here we use the GCAM integrated assessment model to explore how climate mitigation policies that achieve a climate stabilization at 4.5 W m-2 radiative forcing in 2100 and value carbon in terrestrial ecosystems interact with future agricultural productivity and food and energy demands to influence land use in the tropics. The regional land use results are downscaled from GCAM regions to produce gridded maps of tropical land use change. We find that tropical forests are preserved only in cases where a climate mitigation policy that values terrestrial carbon is in place, and crop productivity growth continues throughout the century. Crop productivity growth is also necessary to avoid large scale deforestation globally and enable the production of bioenergy crops. The terrestrial carbon pricing assumptions in GCAM are effective at avoiding deforestation even when cropland must expand to meet future food demand.

Thomson, Allison M.; Calvin, Katherine V.; Chini, Louise Parsons; Hurtt, George; Edmonds, James A.; Bond-Lamberty, Benjamin; Frolking, Steve; Wise, Marshall A.; Janetos, Anthony C.

2010-11-16T23:59:59.000Z

148

NPP Grassland: Jornada, U.S.A. [New Mexico]  

NLE Websites -- All DOE Office Websites (Extended Search)

Jornada, U.S.A., 1970-1972 Jornada, U.S.A., 1970-1972 [PHOTOGRAPH] Photograph: Jornada during the PROVE experiment, May 1997 (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Pieper, R. D. 1998. NPP Grassland: Jornada, U.S.A., 1970-1972. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a desert grassland was monitored at the Jornada IBP study site from 1970 to 1972. Dynamics of above-ground plant biomass were monitored at roughly 2-week intervals during the growing season. Data on above ground live biomass, standing dead matter and litter are available, for two replications of a grazed and an "ungrazed" (relatively undisturbed)

149

NPP Tundra: Point Barrow, Alaska [U.S.A.]  

NLE Websites -- All DOE Office Websites (Extended Search)

Point Barrow, Alaska, 1970-1972 Point Barrow, Alaska, 1970-1972 Data Citation Cite this data set as follows: Tieszen, L. L. 2001. NPP Tundra: Point Barrow, Alaska, 1970-1972. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a wet arctic tundra meadow was studied from 1970 to 1972 at Point Barrow, Alaska, U.S.A. Measurements of peak above-ground live biomass and leaf area index were made on 43 permanent plots, 1 m x 10 m, representing the spectrum of undisturbed vegetation. In addition, temporal variation in standing crop was assessed for the 1971 growing season for a sedge meadow only. The study area (71.30 N 156.67 W) is located 3 km inland from the Chukchi

150

NPP Tundra: Toolik Lake, Alaska [U.S.A.]  

NLE Websites -- All DOE Office Websites (Extended Search)

Toolik Lake, Alaska, 1982 Toolik Lake, Alaska, 1982 Data Citation Cite this data set as follows: Shaver, G. R. 2001. NPP Tundra: Toolik Lake, Alaska, 1982. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of four contrasting vegetation types was studied during 1982 near Toolik Lake, Alaska, U.S.A. Above-ground biomass and below-ground stem/ rhizome biomass were measured on three occasions during the growing season; for (1) a "tussock" tundra containing graminoids, deciduous shrubs and evergreen shrubs, (2) a "shrub" tundra dominated by deciduous willow shrubs, (3) a "heath" tundra of evergreen shrubs, and (4) a "wet" tundra

151

NPP Grassland: Konza Prairie, U.S.A. [Kansas]  

NLE Websites -- All DOE Office Websites (Extended Search)

Konza Prairie, U.S.A., 1984-1990 Konza Prairie, U.S.A., 1984-1990 Data Citation Cite this data set as follows: Knapp, A. K., and D. Ojima. 1996. NPP Grassland: Konza Prairie, U.S.A., 1984-1990. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a humid temperate tall-grass prairie was determined at the Konza Prairie Natural Research Area from 1975 to the present. Monthly dynamics of above-ground plant biomass have been monitored since 1984, and estimates of above-ground plant production have been made since 1975. The Konza Prairie was the site of the First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment (FIFE), an intensive

152

NPP Grassland: Osage, U.S.A. [Oklahoma]  

NLE Websites -- All DOE Office Websites (Extended Search)

Osage, U.S.A., 1970-1972 Osage, U.S.A., 1970-1972 [PHOTOGRAPH] Photograph: Insect sampling trap at the Osage site (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Risser, P. G. 1998. NPP Grassland: Osage, U.S.A., 1970-1972. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a tallgrass prairie grassland was monitored at the Osage study site from 1970 to 1972. Dynamics of above-ground plant biomass were monitored at roughly 2-week intervals during the growing season. Data on above-ground live biomass, standing dead matter and litter are available, for two replications of a grazed and an "ungrazed" (relatively undisturbed)

153

Comparison between VNIIEF computer programs used to study NPP safety and similar western codes  

SciTech Connect

This report gives schematic comparison between VNIIEF computer programs used to study NPP safety and similar western codes. This comparison is schematic and in no way pretends to be complete.

Pevnitsky, A.V.; Tarasov, V.A.; Solovyev, V.P. [and others

1995-12-31T23:59:59.000Z

154

Tropical Western Pacific  

NLE Websites -- All DOE Office Websites (Extended Search)

ARM-00-005 ARM-00-005 RPT(TWP)-010.006 LA-UR-004434 Tropical Western Pacific Site Science Mission Plan July - December 2000 Prepared for the U.S. Department of Energy under Contract W-7405-ENG-36 Tropical Western Pacific Project Office Atmospheric and Climate Sciences Group (EES-8) Earth and Environmental Sciences Division Los Alamos National Laboratory Los Alamos, NM 87545 This report and previous versions are available electronically at the following web sites: http://www.arm.gov/docs/sites/twp/science_plan/archive.html http://www.twppo.lanl.gov/docs/office.html 2 DISCLAIMER This report was prepared as an account of work sponsored by the United States Government. Neither the United States nor an agency thereof, nor any of their employees, makes any warranty, expresses or

155

Effects of selective logging on tropical forest tree growth  

E-Print Network (OSTI)

State University of New York at Albany, Albany, NY 12203,Albany, New York, USA. CENA, University of Sao Paulo, SaoResearch Center, State University of New York at Albany,

2008-01-01T23:59:59.000Z

156

Are tropical forests near a high temperature threshold?  

E-Print Network (OSTI)

and a 30-m tall tower at km-83. The km-83 scaffold wasground level on a 67-m tall tower (Rohn 55G, Rohn, Peoria,field sites, working off a 45-m tall scaffold tower at km-67

Doughty, Christopher E.; Goulden, Michael L.

2008-01-01T23:59:59.000Z

157

The cost-effectiveness of biodiversity surveys in tropical forests  

E-Print Network (OSTI)

Florestal and Jari Celulose at Jari for permissions and logistic support. We are very grateful to Fernando Z

Barlow, Jos

158

A Nano-Quantum Photonic Model for Justification of Dispersion in Single Crystal Film of NPP  

E-Print Network (OSTI)

In this paper, we present a nano-quantum photonic model for justification of normal dispersion in a thin crystal film of NPP. In this method, we assume a laser beam consists of a flow of energetic particles. By precise analyzing of photon interaction with pi-electron system of benzene ring in NPP crystal, we will attain refractive index (RI) in any wavelength and compare the results with experimental data.

Hassan Kaatuzian; AliAkbar Wahedy Zarch

2006-11-24T23:59:59.000Z

159

Eastern Hemisphere Tropical Cyclones of 1996  

Science Conference Proceedings (OSTI)

This paper is an annual summary of the Eastern Hemisphere tropical cyclones of 1996. The tropical cyclone statistics presented derive from records at the Joint Typhoon Warning Center, Guam. Although the text focuses on the tropical cyclones that ...

Mark A. Lander; Eric J. Trehubenko; Charles P. Guard

1999-06-01T23:59:59.000Z

160

The Tropical Warm Pool International Cloud Experiment  

Science Conference Proceedings (OSTI)

A comprehensive dataset describing tropical cloud systems and their environmental setting and impacts has been collected during the Tropical Warm Pool International Cloud Experiment (TWP-ICE) and Aerosol and Chemical Transport in Tropical ...

Peter T. May; James H. Mather; Geraint Vaughan; Keith N. Bower; Christian Jakob; Greg M. McFarquhar; Gerald G. Mace

2008-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Eastern Hemisphere Tropical Cyclones of 1995  

Science Conference Proceedings (OSTI)

This paper is designed to be an annual summary of the Eastern Hemisphere tropical cyclones of 1995. The tropical cyclone statistics presented are those of the Joint Typhoon Warning Center, Guam. The text focuses primarily upon the tropical ...

Mark A. Lander; Michael D. Angove

1998-02-01T23:59:59.000Z

162

Atlantic Tropical Systems of 1993  

Science Conference Proceedings (OSTI)

A total of 70 tropical waves (also known as African or easterly waves) were counted in the Atlantic basin during the 1993 hurricane season. These waves led to the formation of 9 of the 10 total number of tropical cyclones in the Atlantic ...

Lixion A. Avila; Richard J. Pasch

1995-03-01T23:59:59.000Z

163

NPP Grassland: Cañas, Costa Rica  

NLE Websites -- All DOE Office Websites (Extended Search)

Cañas, Costa Rica, 1969-1970 Cañas, Costa Rica, 1969-1970 [PHOTOGRAPH] Photograph: Exclosure at the Cañas site (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Daubenmire, J. 1997. NPP Grassland: Cañas, Costa Rica, 1969-1970. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a derived savanna was determined at the Cañas study site in north-western Costa Rica. Monthly dynamics of above-ground plant matter (live biomass, total live + dead standing crop and estimated mortality) were monitored from July 1969 to June 1970. The Cañas study site (10.4 N 85.1 W) was situated 8 km northwest of the town of Cañas in Guanacaste Province, 1.8 km from the Cañas (La Pacifica)

164

Tropical Cyclone Winds from Scatterometer Winds  

E-Print Network (OSTI)

this paper, wc demonstrate that accurate estimates of tropical cyclone intensity over data sparse ocean regions

Carol S. Hsu; W. Timothy Liu

1995-01-01T23:59:59.000Z

165

Tropical Tropospheric Temperature Variations Caused by ENSO and Their Influence on the Remote Tropical Climate  

Science Conference Proceedings (OSTI)

The warming of the entire tropical free troposphere in response to El Niño is well established, and suggests a tropical mechanism for the El Niño–Southern Oscillation (ENSO) teleconnection. The potential impact of this warming on remote tropical ...

John C. H. Chiang; Adam H. Sobel

2002-09-01T23:59:59.000Z

166

Historical Global Tropical Cyclone Landfalls  

Science Conference Proceedings (OSTI)

In recent decades, economic damage from tropical cyclones (TCs) around the world has increased dramatically. Scientific literature published to date finds that the increase in losses can be explained entirely by societal changes (such as ...

Jessica Weinkle; Ryan Maue; Roger Pielke Jr

2012-07-01T23:59:59.000Z

167

Tropical Cyclones and Climate Change  

E-Print Network (OSTI)

Whether the characteristics of tropical cyclones have changed or will change in a warming climate — and if so, how — has been the subject of considerable investigation, often with conflicting results. Large amplitude ...

Knutson, Thomas R.

168

Interactions of the Tropical Oceans  

Science Conference Proceedings (OSTI)

The authors have investigated the interactions of the tropical oceans on interannual timescales by conducting a series of uncoupled atmospheric and oceanic general circulation experiments and hybrid-coupled model simulations. The results ...

M. Latif; T. P. Barnett

1995-04-01T23:59:59.000Z

169

Climate and the Tropical Oceans  

Science Conference Proceedings (OSTI)

An attempt is made to determine the role of the ocean in establishing the mean tropical climate and its sensitivity to radiative perturbations. A simple two-box energy balance model is developed that includes ocean heat transports as an ...

Amy Clement; Richard Seager

1999-12-01T23:59:59.000Z

170

Heating Rates in Tropical Anvils  

Science Conference Proceedings (OSTI)

The interaction of infrared and solar radiation with tropical cirrus anvils is addressed. Optical properties of the anvils are inferred from satellite observations and from high-altitude aircraft measurements. An infrared multiple-scattering ...

Thomas P. Ackerman; Kuo-Nan Liou; Francisco P. J. Valero; Leonhard Pfister

1988-05-01T23:59:59.000Z

171

Microphysical Observations of Tropical Clouds  

Science Conference Proceedings (OSTI)

The results from airborne in situ sampling of convective tropical storms in the Amazon and Kwajalein are presented. Three cases from the Amazon and two from Kwajalein are compared and provide examples of the much larger dataset that was obtained ...

Jeffrey L. Stith; James E. Dye; Aaron Bansemer; Andrew J. Heymsfield; Cedric A. Grainger; Walter A. Petersen; Robert Cifelli

2002-02-01T23:59:59.000Z

172

The Health of Colorado's Forests  

E-Print Network (OSTI)

, Fort Collins, Colo., and Aerial Survey Coordinator, Colorado State Forest Service (CSFS. Patricia M. Ciesla, Forest Health Management International, Fort Collins, Colo. Brian Howell, Aerial SurveyThe Health of Colorado's Forests 2009 Report Special Issue: Threats to Colorado's Current

173

The Forest Preserve District  

NLE Websites -- All DOE Office Websites (Extended Search)

Forest Preserve District Forest Preserve District Nature Bulletin No. 109 March 29, 1947 Forest Preserve District of Cook County William N. Erickson, President Roberts Mann, Supt. of Conservation THE FOREST PRESERVE DISTRICT Forest Preserve Districts, in Illinois, are separate municipal bodies governed by a Board of Forest Preserve Commissioners consisting of the elected county commissioners, as in Cook County, or by a committee of the county board of supervisors, as in 7 other counties. The legislative act which provided for such a district, if authorized by referendum vote of the people, became a law on July 1, 1914. Under that act, the commissioners are empowered to levy taxes, issue bonds, and to acquire lands containing forests "for the purpose of protecting and preserving the flora, fauna and scenic beauties.... and to restore, restock, protect and preserve the natural forests and said lands with their flora and fauna, as nearly as may be in their natural state and condition for the purpose of the education, pleasure and recreation of the public". A limit of 35,000 acres was set; later increased to 39,000.

174

Simulation of Hydrogen Distribution in Ignalina NPP ALS Compartments During BDBA  

Science Conference Proceedings (OSTI)

Accident Localisation System (ALS) of Ignalina NPP is a 'pressure suppression' type confinement, which protects the population, employees and environment from the radiation hazards. According to the Safety Analysis Report for Ignalina NPP {approx}110 m{sup 3} of hydrogen is released to ALS compartments during the Maximum Design Basis Accident. However in case of beyond design basis accident, when the oxidation of zirconium starts, the amount of generated hydrogen could be significantly higher. If the volume concentration of hydrogen in the compartment reaches 4%, there is a possibility for a combustible mixture to appear. To prevent the possible hydrogen accumulation in the ALS of the Ignalina NPP during an accident the H{sub 2} control system is installed. The results of the performed analysis derived the places of the possible H{sub 2} accumulation in the ALS compartments during the transient processes and assessed the mixture combustibility in these places for a beyond design basis accident scenario. Such analysis of H{sub 2} distribution in the ALS of Ignalina NPP in case of BDBA was not performed before. (authors)

Babilas, Egidijus; Urbonavicius, Egidijus; Rimkevicius, Sigitas [Lithuanian Energy Institute, Breslaujos str. 3, LT-44403 Kaunas (Lithuania)

2006-07-01T23:59:59.000Z

175

The Automated Tropical Cyclone Forecasting System (ATCF)  

Science Conference Proceedings (OSTI)

The U.S. Navy Automated Tropical Cyclone Forecasting System (ATCF) is an IBM-AT compatible software package developed for the Joint Typhoon Warning Center (JTWC), Guam. ATCF is designed to assist forecasters with the process of making tropical ...

Ronald J. Miller; Ann J. Schrader; Charles R. Sampson; Ted L. Tsui

1990-12-01T23:59:59.000Z

176

Midlevel Ventilation's Constraint on Tropical Cyclone Intensity  

E-Print Network (OSTI)

Midlevel ventilation, or the flux of low-entropy air into the inner core of a tropical cyclone (TC), is a hypothesized mechanism by which environmental vertical wind shear can constrain a tropical cyclone’s intensity. An ...

Tang, Brian Hong-An

177

A Ventilation Index for Tropical Cyclones  

E-Print Network (OSTI)

An important environmental control of both tropical cyclone intensity and genesis is vertical wind shear. One hypothesized pathway by which vertical shear affects tropical cyclones is midlevel ventilation—or the flux of ...

Tang, Brian

178

Tropical-Extratropical Interactions of Intraseasonal Oscillations  

Science Conference Proceedings (OSTI)

Tropical-extratropical interactions of intraseasonal oscillations (ISOs), based on 30 yr (1979-2009) of northern winter observations and theory, are compared. The phase relationships between the tropical signal of the leading theoretical ISO for a ...

Jorgen S. Frederiksen; Hai Lin

179

12.811 Tropical Meteorology, Spring 2005  

E-Print Network (OSTI)

This course describes the behavior and dynamics of the tropical troposphere, from the large-scale energy balance down to cumulus convection and tropical cyclones. Topics include: Radiative-convective equilibrium; the Hadley ...

Emanuel, Kerry

180

A Global Climatology of Tropical Moisture Exports  

Science Conference Proceedings (OSTI)

In a recent paper, a climatology of tropical moisture exports (TMEs) to the Northern Hemisphere (NH) was constructed on the basis of 7-day forward trajectories, started daily from the tropical lower troposphere, which were required to reach a ...

Peter Knippertz; Heini Wernli; Gregor Gläser

2013-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Distribution of Tropical Tropospheric Water Vapor  

Science Conference Proceedings (OSTI)

Utilizing a conceptual model for tropical convection and observational data for water vapor, the maintenance of the vertical distribution of the tropical tropospheric water vapor is discussed. While deep convection induces large-scale subsidence ...

De-Zheng Sun; Richard S. Lindzen

1993-06-01T23:59:59.000Z

182

Diagnosing Forecast Errors in Tropical Cyclone Motion  

Science Conference Proceedings (OSTI)

This paper reports on the development of a diagnostic approach that can be used to examine the sources of numerical model forecast error that contribute to degraded tropical cyclone (TC) motion forecasts. Tropical cyclone motion forecasts depend ...

Thomas J. Galarneau Jr.; Christopher A. Davis

2013-02-01T23:59:59.000Z

183

Temperature Advection by Tropical Instability Waves  

Science Conference Proceedings (OSTI)

A numerical model of the tropical Pacific Ocean is used to investigate the processes that cause the horizontal temperature advection of tropical instability waves (TIWs). It is found that their temperature advection cannot be explained by the ...

Markus Jochum; Raghu Murtugudde

2006-04-01T23:59:59.000Z

184

Why Are There Tropical Warm Pools?  

Science Conference Proceedings (OSTI)

Tropical warm pools appear as the primary mode in the distribution of tropical sea surface temperature (SST). Most previous studies have focused on the role of atmospheric processes in homogenizing temperatures in the warm pool and establishing ...

Amy C. Clement; Richard Seager; Raghu Murtugudde

2005-12-01T23:59:59.000Z

185

Woodland Park Healthy Forest Initiative  

E-Print Network (OSTI)

whether we could get Colorado Springs to take some of it. The Mayor called the head of the electric plant Healthy Forest Initiative 1 1 Colorado Forest Restoration Institute Collaboration Case Study: Woodland Park Healthy Forest Initiative Corrie Knapp Prepared for the Colorado Forest Restoration Institute

186

PACIFIC SOUTHWEST Forest and Range  

E-Print Network (OSTI)

years with the Forest Survey at the Southeastern Forest Experiment Station, he joined the Aerial Re, and is now a mathe- matical statistician. #12;C lassifying forest stand volumes on single aerial photographs is unique to the na- tionwide Forest Survey 1 -- stratifying volume on photographs is not. In fact, since

Standiford, Richard B.

187

Climate change cripples forests  

NLE Websites -- All DOE Office Websites (Extended Search)

Climate Change Cripples Forests Climate Change Cripples Forests Climate change cripples forests A team of scientists concluded that in the warmer and drier Southwest of the near future, widespread tree mortality will cause forest and species distributions to change substantially. October 1, 2012 A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "There will still be wet winters, but they will more often be followed by warm summers, putting stress on trees and limiting their ability to respond

188

Climate change cripples forests  

NLE Websites -- All DOE Office Websites (Extended Search)

Climate change cripples forests Climate change cripples forests Climate change cripples forests A team of scientists concluded that in the warmer and drier Southwest of the near future, widespread tree mortality will cause forest and species distributions to change substantially. October 1, 2012 A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "There will still be wet winters, but they will more often be followed by warm summers, putting stress on trees and limiting their ability to respond

189

Climate change cripples forests  

NLE Websites -- All DOE Office Websites (Extended Search)

Climate Change Cripples Forests Climate Change Cripples Forests Climate change cripples forests A team of scientists concluded that in the warmer and drier Southwest of the near future, widespread tree mortality will cause forest and species distributions to change substantially. October 1, 2012 A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. A dead pinon at the edge of the Grand Canyon, harbinger of the future for trees in the Southwest United States. Photo courtesy A. Park Williams. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "There will still be wet winters, but they will more often be followed by warm summers, putting stress on trees and limiting their ability to respond

190

Nicholas DeForest  

NLE Websites -- All DOE Office Websites (Extended Search)

Nicholas DeForest Grid Integration Group Microgrids Lawrence Berkeley National Laboratory 1 Cyclotron Road MS 90R1121 Berkeley CA 94720 Office Location: 90-1139 (510) 486-6188...

191

Idaho Panhandle National Forests  

E-Print Network (OSTI)

National Forests. The RNA features vegetation on dry cliffs that are embedded in mid-elevation moist western hemlock/western redcedar/grand fir forests. Immediately below the cliffs is riparian habitat that supports many wetland species, including a disjunct west coast moss, Ulota megalospora, whose first known occurrence in Idaho is in this RNA. This establishment report documents the boundaries of the RNA, the objectives for the RNA, its features, description of

United States; Forest Service; Priest River; Experimental Forest; Dennis E. Ferguson; Arthur C. Zack Ferguson; Dennis E. Zack

2006-01-01T23:59:59.000Z

192

Atlantic Tropical Systems of 1979  

Science Conference Proceedings (OSTI)

The 1979 hurricane season produced 85 “tropical system” of which 27 acquired the closed circulation of a depression 52 of these originated over the African Continent. African seedlings initiated 7 of the 8 named Atlantic storm and 7 of the 10 ...

Neil L. Frank; Gilbert Clark

1980-07-01T23:59:59.000Z

193

Effects of warming on the structure and function of a boreal black spruce forest  

Science Conference Proceedings (OSTI)

A strong argument can be made that there is a greater need to study the effect of warming on boreal forests more than on any other terrestrial biome. Boreal forests, the second largest forest biome, are predicted to experience the greatest warming of any forest biome in the world, but a process-based understanding of how warming will affect the structure and function of this economically and ecologically important forest biome is lacking. The effects of warming on species composition, canopy structure and biogeochemical cycles are likely to be complex; elucidating the underlying mechanisms will require long-term whole-ecosystem manipulation to capture all the complex feedbacks (Shaver et al. 2000, Rustad et al. 2001, Stromgren 2001). The DOE Program for Ecosystem Research funded a three year project (2002-2005) to use replicated heated chambers on soil warming plots in northern Manitoba to examine the direct effects of whole-ecosystem warming. We are nearing completion of our first growing season of measurements (fall 2004). In spite of the unforeseen difficulty of installing the heating cable, our heating and irrigation systems worked extremely well, maintaining environmental conditions within 5-10% of the specified design 99% of the time. Preliminary data from these systems, all designed and built by our laboratory at the University of Wisconsin, support our overall hypothesis that warming will increase the carbon sink strength of upland boreal black spruce forests. I request an additional three years of funding to continue addressing the original objectives: (1) Examine the effect of warming on phenology of overstory, understory and bryophyte strata. Sap flux systems and dendrometer bands, monitored by data loggers, will be used to quantify changes in phenology and water use. (2) Quantify the effects of warming on nitrogen and water use by overstory, understory and bryophytes. (3) Compare effects of warming on autotrophic respiration and above- and belowground net primary production (NPP) budgets. Autotrophic respiration budgets will be constructed using chamber measurements for each tissue and NPP and standard allometry techniques (Gower et al. 1999). (4) Compare microbial and root dynamics, and net soil surface CO2 flux, of control and warmed soils to identify causes that may explain the hypothesized minimal effect of soil warming on soil surface CO2 flux. Fine root production and turnover will be quantified using minirhizotrons, and microbial dynamics will be determined using laboratory mineralization incubations. Soil surface CO2 flux will be measured using automated soil surface CO2 flux systems and portable CO2 analyzers. The proposed study builds on the existing research programs Gower has in northern Manitoba and would not be possible without in-kind services and financial support from Manitoba Hydro and University of Wisconsin.

Stith T.Gower

2010-03-03T23:59:59.000Z

194

Floor response spectra for seismic qualification of Kozloduy VVER 440-230 NPP  

Science Conference Proceedings (OSTI)

In this paper the floor response spectra generation methodology for Kozloduy NPP, Unit 1-2 of VVER 440-230 is presented. The 2D coupled soil-structure interaction models are used combined with a simplified correction of the final results for accounting of torsional effects. Both time history and direct approach for in-structure spectra generation are used and discussion of results is made.

Kostov, M.K. [Bulgarian Academy of Sciences, Sofia (BG). Central Lab. for Seismic Mechanics and Earthquake Engineering; Ma, D.C. [Argonne National Lab., IL (United States); Prato, C.A. [Univ. of Cordoba (AR); Stevenson, J.D. [Stevenson and Associates, Cleveland, OH (US)

1993-08-01T23:59:59.000Z

195

Challenges to estimating carbon emissions from tropical deforestation  

E-Print Network (OSTI)

An accurate estimate of carbon fluxes associated with tropical deforestation from the last two decades is needed to balance the global carbon budget. Several studies have already estimated carbon emissions from tropical deforestation, but the estimates vary greatly and are difficult to compare due to differences in data sources, assumptions, and methodologies. In this paper, we review the different estimates and datasets, and the various challenges associated with comparing them and with accurately estimating carbon emissions from deforestation. We performed a simulation study over legal Amazonia to illustrate some of these major issues. Our analysis demonstrates the importance of considering land-cover dynamics following deforestation, including the fluxes from reclearing of secondary vegetation, the decay of product and slash pools, and the fluxes from regrowing forest. It also suggests that accurate carbon-flux estimates will need to consider historical land-cover changes for at least the previous 20 years. However, this result is highly sensitive to estimates of the partitioning of cleared carbon into instantaneous burning vs. long-timescale slash pools. We also show that carbon flux estimates based on ‘committed flux ’ calculations, as used by a few studies, are not comparable with the ‘annual balance ’ calculation method used by other studies.

Holly K. Gibbsw; Frédéric Achardz; Ruth Defries; Jonathan A. Foleyw; R. A. Houghton

2006-01-01T23:59:59.000Z

196

An overview of the ENEA activities in the field of coupled codes NPP simulation  

SciTech Connect

In the framework of the nuclear research activities in the fields of safety, training and education, ENEA (the Italian National Agency for New Technologies, Energy and the Sustainable Development) is in charge of defining and pursuing all the necessary steps for the development of a NPP engineering simulator at the 'Casaccia' Research Center near Rome. A summary of the activities in the field of the nuclear power plants simulation by coupled codes is here presented with the long term strategy for the engineering simulator development. Specifically, results from the participation in international benchmarking activities like the OECD/NEA 'Kalinin-3' benchmark and the 'AER-DYN-002' benchmark, together with simulations of relevant events like the Fukushima accident, are here reported. The ultimate goal of such activities performed using state-of-the-art technology is the re-establishment of top level competencies in the NPP simulation field in order to facilitate the development of Enhanced Engineering Simulators and to upgrade competencies for supporting national energy strategy decisions, the nuclear national safety authority, and the R and D activities on NPP designs. (authors)

Parisi, C.; Negrenti, E.; Sepielli, M. [ENEA Casaccia Research Center, Santa Maria di Galeria, 00123, Rome (Italy); Del Nevo, A. [ENEA Brasimone Research Center, Camugnano, 40032 (Italy)

2012-07-01T23:59:59.000Z

197

In Search of the Rain Forest  

E-Print Network (OSTI)

Review: In Search of the Rain Forest By Candace Slater (Candace Slater (Ed. ). In Search of the Rain Forest. Durham:

Hamilton-Smith, Elery

2005-01-01T23:59:59.000Z

198

Forest Preserve Wildlife  

NLE Websites -- All DOE Office Websites (Extended Search)

Forest Preserve Wildlife Forest Preserve Wildlife Nature Bulletin No. 437-A December 11, 1971 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation FOREST PRESERVE WILDLIFE The Forest Preserve District now comprises about 62,512 acres of native landscape, mostly wooded, acquired and held as the statute prescribes: for the purpose of protecting the flora, fauna and scenic beauties in their natural state and condition as nearly as may be. It is a huge wildlife sanctuary wherein no weapon may be carried and no hunting, trapping or molestation of any mammal or bird is permitted. Aside from fish management, the wildlife has been left alone to work out its own systems of checks and balances. There has been no attempt to remove surplus populations; no control of any predator other than wild cats and dogs. None is needed. Dead or hollow trees have been allowed to stand, or lie where they fall, because they furnish homes for many kinds of wildlife and go back into the soil to maintain the health of the woodland. There has been considerable reforestation of open tracts formerly farmed and, in some areas, planting of shrubs and vines which provide food for wildlife.

199

Carbon emissions and sequestration in forests: Case studies from seven developing countries  

DOE Green Energy (OSTI)

As part of the effort to understand the sources of carbon dioxide and other major greenhouse gases, the Tropical Forestry and Global Climate Change Research Network (F-7) was established. The countries taking part in the F-7 Network -- Brazil, China, India, Indonesia, Malaysia, Mexico, Nigeria and Thailand -- possess large tracts of tropical forests and together experience the bulk of large scale tropical deforestation. Integreation of work of indigenous researchers and institutions from the participating countries should allow for the gathering of on-site information into the more general and universally available base of knowledge. The information contained in this report represents the results of the first phase of the F-7 project, which had the explicit aim of providing quantitative data on forestry-related carbon emissions from India and China.

Makundi, W.; Sathaye, J. (eds.) (Lawrence Berkeley Lab., CA (United States)); Ravindranath, N.H.; Somashekhar, B.S.; Gadgil, M. (Indian Inst. of Science, Bangalore, (India). Center for Ecological Sciences and ASTRA); Deying, Xu (Chinese Academy of Forestry, Beijing, (China). Research Inst. of Forestry)

1992-08-01T23:59:59.000Z

200

Tropical Indian Ocean Influence on Northwest Pacific Tropical Cyclones in Summer following Strong El Niño  

Science Conference Proceedings (OSTI)

In the summer following a strong El Niño, tropical cyclone (TC) number decreases over the Northwest (NW) Pacific despite little change in local sea surface temperature. The authors’ analysis suggests El Niño–induced tropical Indian Ocean (TIO) ...

Yan Du; Lei Yang; Shang-Ping Xie

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Generalized Inversion of Tropical Atmosphere–Ocean Data and a Coupled Model of the Tropical Pacific  

Science Conference Proceedings (OSTI)

It is hypothesized that the circulation of the tropical Pacific Ocean and atmosphere satisfies the equations of a simple coupled model to within errors having specified covariances, and that the Tropical Atmosphere–Ocean array (TAO) measures the ...

Andrew F. Bennett; Boon S. Chua; D. Ed Harrison; Michael J. McPhaden

1998-07-01T23:59:59.000Z

202

An Objective Algorithm for Detecting and Tracking Tropical Cloud Clusters: Implications for Tropical Cyclogenesis Prediction  

Science Conference Proceedings (OSTI)

An algorithm to detect and track global tropical cloud clusters (TCCs) is presented. TCCs are organized large areas of convection that form over warm tropical waters. TCCs are important because they are the “seedlings” that can evolve into ...

Christopher C. Hennon; Charles N. Helms; Kenneth R. Knapp; Amanda R. Bowen

2011-08-01T23:59:59.000Z

203

Majoring in Forest Resources & Conservation  

E-Print Network (OSTI)

Majoring in Forest Resources & Conservation University of Florida/IFAS School of Forest Resources & Conservation www.sfrc.ufl.edu ~ 352-846-0847 ~ khaselier@ufl.edu Business Management gives students a sound Management Summer B FOR3200C Foundations in Natural Resources and Conservation 3 credits FOR3434C Forest

Watson, Craig A.

204

Research Report Forests and carbon  

E-Print Network (OSTI)

Research Report Forests and carbon: valuation, discounting and risk management #12;#12;Forests and carbon: valuation, discounting and risk management Gregory Valatin Forestry Commission: Edinburgh-0-85538-815-7 Valatin, G. (2010). Forests and carbon: valuation, discounting and risk management. Forestry Commission

205

Research Report Forests and carbon  

E-Print Network (OSTI)

Research Report Forests and carbon: a review of additionality #12;#12;Forests and carbon: a review. ISBN 978-0-85538-816-4 Valatin, G. (2011). Forests and carbon: a review of additionality. Forestry, baseline, carbon, climate change mitigation, forestry, quality assurance, sequestration. FCRP013/FC

206

1974 FORESTER the world a  

E-Print Network (OSTI)

1974 FORESTER #12;#12;2 TREES make the world a better place in which to live! #12;TABLE OF CONTENTS . .... . .... . . . . . .....63 ADVERTISERS . . .. . . . . . .. ....... ....... .. 75 #12;FORESTER'S SALUTE TO DR. ERIC A. BOUROO. The Forester salutes Dean Bourdo for his accomplishments in advancing forestry at Michigan Tech, as a member

207

Special Issue: High Elevation Forests  

E-Print Network (OSTI)

Resources, Colorado State University William Ciesla, Aerial Survey Coordinator, U.S. Forest Service (retired material for homes. They also capture, purify, and release water for our use. Recent aerial surveys confirmSpecial Issue: High Elevation Forests 2008 The Health of Colorado's Forests Report #12;David A

208

Colorado Statewide Forest Resource Assessment  

E-Print Network (OSTI)

climate and slow-growing forests generally have prevented wood production from becoming a major state such as climate change, renewable energy, intense recreational use, billion dollar fire suppression costs and Implementation of Forest Management in Colorado #12;Acknowledgements The Colorado State Forest Service (CSFS

209

UPDATE: Tropical Storm Isaac | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

UPDATE: Tropical Storm Isaac UPDATE: Tropical Storm Isaac UPDATE: Tropical Storm Isaac August 27, 2012 - 6:30pm Addthis Satellite image of Tropical Storm Isaac. | Courtesy of NOAA. Satellite image of Tropical Storm Isaac. | Courtesy of NOAA. April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs Tropical Storm Isaac has impacted Florida and is expected to make landfall along the Gulf Coast by early morning on August 29. As thousands of Gulf Coast residents are without power, the Energy Department's Office of Electricity Delivery and Energy Reliability will publish Emergency Situation Reports that provide details on customer outages and other energy sector impacts in the storm's path, as well as recovery and restoration activities being undertaken. The first Situation

210

Population and conservation genomics of forest trees: seeing the forest for the trees  

E-Print Network (OSTI)

DB, Kremer A: Forest tree genomics: Growing resources andPopulation and conservation genomics of forest trees: seeingPopulation and conservation genomics of forest trees: seeing

Eckert, Andrew

2011-01-01T23:59:59.000Z

211

INTER-AMERICAN TROPICAL TUNA COMMISSION COMISIN INTERAMERICANA DEL ATN TROPICAL  

E-Print Network (OSTI)

INTER-AMERICAN TROPICAL TUNA COMMISSION COMISIÃ?N INTERAMERICANA DEL ATÃ?N TROPICAL 73RD MEETING The Inter-American Tropical Tuna Commission (IATTC): Taking into account the FAO International Plan to evaluate the incidental mortality of seabirds during longline fishing operations for tunas and tuna

212

Tropic, Utah: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

| Sign Up Search Page Edit with form History Facebook icon Twitter icon Tropic, Utah: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates...

213

Tropical Western Pacific: A Year in Darwin  

NLE Websites -- All DOE Office Websites (Extended Search)

Richland, Washington L. Jones, W. M. Porch, and A. Haruta Los Alamos National Laboratory Los Alamos, New Mexico Introduction In March 2002, the third Tropical Western...

214

Tropical Cloud Life Cycle and Overlap Structure  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Cloud Life Cycle and Overlap Structure Vogelmann, Andrew Brookhaven National Laboratory Jensen, Michael Brookhaven National Laboratory Kollias, Pavlos Brookhaven National...

215

Adjustment of the Remote Tropical Climate to El Niño Conditions  

Science Conference Proceedings (OSTI)

The adjustment of the tropical climate outside the Pacific (the “remote Tropics”) to the abrupt onset of El Niño conditions is examined in a tropical atmosphere model that assumes simplified vertical structure and quasi-equilibrium (QE) ...

Benjamin R. Lintner; John C. H. Chiang

2007-06-01T23:59:59.000Z

216

Influence of Tropical Tropopause Layer Cooling on Atlantic Hurricane Activity  

Science Conference Proceedings (OSTI)

Virtually all metrics of Atlantic tropical cyclone activity show substantial increases over the past two decades. It is argued here that cooling near the tropical tropopause and the associated decrease in tropical cyclone outflow temperature ...

Kerry Emanuel; Susan Solomon; Doris Folini; Sean Davis; Chiara Cagnazzo

2013-04-01T23:59:59.000Z

217

Observations of the Overland Reintensification of Tropical Storm Erin (2007)  

Science Conference Proceedings (OSTI)

Atlantic Tropical Depression Five (2007) briefly strengthened into Tropical Storm Erin over the western Gulf of Mexico shortly before making landfall as a tropical depression near Corpus Christi, Texas, on the morning of 16 August 2007. During ...

Derek S. Arndt; Jeffrey B. Basara; Renee A. McPherson; Bradley G. Illston; Gary D. McManus; David B. Demko

2009-08-01T23:59:59.000Z

218

Influence of Tropical Tropopause Layer Cooling on Atlantic Hurricane Activity  

E-Print Network (OSTI)

Virtually all metrics of Atlantic tropical cyclone activity show substantial increases over the past two decades. It is argued here that cooling near the tropical tropopause and the associated decrease in tropical cyclone ...

Solomon, Susan

219

Long-Term Observations of Tropical Instability Waves  

Science Conference Proceedings (OSTI)

Reynolds sea surface temperature (SST) data showing tropical instability waves (TIWs) in the tropical Pacific are analyzed along with current measurements from the Tropical Atmosphere–Ocean (TAO) buoy array and wind speeds from the European ...

Robert F. Contreras

2002-09-01T23:59:59.000Z

220

Observed Antarctic Interannual Climate Variability and Tropical Linkages  

Science Conference Proceedings (OSTI)

This study reviews the mechanisms associated with Antarctic–tropical climate linkages and presents new analyses of the seasonality and spatial patterns of tropical climate signals in the Antarctic for the late 1950s to the present. Tropical ...

David P. Schneider; Yuko Okumura; Clara Deser

2012-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Impacts of Atmospheric Temperature Trends on Tropical Cyclone Activity  

Science Conference Proceedings (OSTI)

Impacts of tropical temperature changes in the upper troposphere (UT) and the tropical tropopause layer (TTL) on tropical cyclone (TC) activity are explored. UT and lower TTL cooling both lead to an overall increase in potential intensity (PI), ...

Gabriel A. Vecchi; Stephan Fueglistaler; Isaac M. Held; Thomas R. Knutson; Ming Zhao

2013-06-01T23:59:59.000Z

222

Tropical Africa: Land Use, Biomass, and Carbon Estimates for...  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Africa: Land Use, Biomass, and Carbon Estimates for 1990 image Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNL...

223

Ocean dynamics and thermodynamics in the tropical Indo- Pacific region  

E-Print Network (OSTI)

Ocean dynamics and thermodynamics in the tropical Indo-Ocean dynamics and thermodynamics in the tropical Indo-affect the dynam- ics and thermodynamics of the upper ocean.

Drushka, Kyla

2011-01-01T23:59:59.000Z

224

OVERVIEW ON BNL ASSESSMENT OF SEISMIC ANALYSIS METHODS FOR DEEPLY EMBEDDED NPP STRUCTURES.  

Science Conference Proceedings (OSTI)

A study was performed by Brookhaven National Laboratory (BNL) under the sponsorship of the U. S. Nuclear Regulatory Commission (USNRC), to determine the applicability of established soil-structure interaction analysis methods and computer programs to deeply embedded and/or buried (DEB) nuclear power plant (NPP) structures. This paper provides an overview of the BNL study including a description and discussions of analyses performed to assess relative performance of various SSI analysis methods typically applied to NPP structures, as well as the importance of interface modeling for DEB structures. There are four main elements contained in the BNL study: (1) Review and evaluation of existing seismic design practice, (2) Assessment of simplified vs. detailed methods for SSI in-structure response spectrum analysis of DEB structures, (3) Assessment of methods for computing seismic induced earth pressures on DEB structures, and (4) Development of the criteria for benchmark problems which could be used for validating computer programs for computing seismic responses of DEB NPP structures. The BNL study concluded that the equivalent linear SSI methods, including both simplified and detailed approaches, can be extended to DEB structures and produce acceptable SSI response calculations, provided that the SSI response induced by the ground motion is very much within the linear regime or the non-linear effect is not anticipated to control the SSI response parameters. The BNL study also revealed that the response calculation is sensitive to the modeling assumptions made for the soil/structure interface and application of a particular material model for the soil.

XU,J.; COSTANTINO, C.; HOFMAYER, C.; GRAVES, H.

2007-04-01T23:59:59.000Z

225

Tropical cyclones and climate change review article  

E-Print Network (OSTI)

Whether the characteristics of tropical cyclones have changed or will change in a warming climate — and if so, how — has been the subject of considerable investigation, often with conflicting results. Large amplitude fluctuations in the frequency and intensity of tropical cyclones greatly complicate both the detection of long-term trends and their attribution to rising levels of atmospheric greenhouse gases. Trend detection is further impeded by substantial limitations in the availability and quality of global historical records of tropical cyclones. Therefore, it remains uncertain whether past changes in tropical cyclone activity have exceeded the variability expected from natural causes. However, future projections based on theory and high-resolution dynamical models consistently indicate that greenhouse warming will cause the globally averaged intensity of tropical cyclones to shift towards stronger storms, with intensity increases of 2–11 % by 2100. Existing modelling studies also consistently project decreases in the globally averaged frequency of tropical cyclones, by 6–34%. Balanced against this, higher resolution modelling studies typically project substantial increases in the frequency of the most intense cyclones, and increases of the order of 20% in the precipitation rate within 100 km of the storm centre. For all cyclone parameters, projected changes for individual basins show large variations between different modelling studies. The challenge for climate change detection and attribution research with regard to tropical cyclones is to determine whether an observed change in tropical cyclone activity

Thomas R. Knutson; John L. Mcbride; Johnny Chan; Kerry Emanuel; Greg Holl; Chris L; Isaac Held; James P. Kossin; A. K. Srivastava; Masato Sugi

2010-01-01T23:59:59.000Z

226

Interannual Variation of the Tropical Easterly Jet  

Science Conference Proceedings (OSTI)

The 200-mb tropical wind fields analyzed at Florida State University for 1965–74 and the 200 and 700 mb tropical wind fields from the National Meteorological Center for 1979–82 were used to explore the mechanism for the interannual variation of ...

Tsing-Chang Chen; Harry van Loon

1987-08-01T23:59:59.000Z

227

A Ventilation Index for Tropical Cyclones  

Science Conference Proceedings (OSTI)

An important environmental control of both tropical cyclone intensity and genesis is vertical wind shear. One hypothesized pathway by which vertical shear affects tropical cyclones is midlevel ventilation—or the flux of low-entropy air into the center of ...

Brian Tang; Kerry Emanuel

2012-12-01T23:59:59.000Z

228

Tropical Cyclones as a Critical Phenomenon  

E-Print Network (OSTI)

It has been proposed that the number of tropical cyclones as a function of the energy they release is a decreasing power-law function, up to a characteristic energy cutoff determined by the spatial size of the ocean basin in which the storm occurs. This means that no characteristic scale exists for the energy of tropical cyclones, except for the finite-size effects induced by the boundaries of the basins. This has important implications for the physics of tropical cyclones. We discuss up to what point tropical cyclones are related to critical phenomena (in the same way as earthquakes, rainfall, etc.), providing a consistent picture of the energy balance in the system. Moreover, this perspective allows one to visualize more clearly the effects of global warming on tropical-cyclone occurrence.

Corral, A

2011-01-01T23:59:59.000Z

229

Scaling of Tropical-Cyclone Dissipation  

E-Print Network (OSTI)

The influence of climate variability and global warming on the occurrence of tropical cyclones (TC) is a controversial issue. Existing historical databases on the subject are not fully reliable, but a more fundamental hindrance is the lack of basic understanding regarding the intrinsic nature of tropical cyclone genesis and evolution. It is known that tropical cyclones involve more than a passive response to changing external forcing, but it is not clear which dynamic behaviour best describes them. Here we present a new approach based on the application of the power dissipation index (PDI), which constitutes an estimation of released energy, to individual tropical cyclones. A robust law emerges for the statistics of PDI, valid in four different ocean basins and over long time periods. In addition to suggesting a novel description of the physics of tropical cyclones in terms of critical phenomena, the law allows to quantify their response to changing climatic conditions, with an increase in the largest PDI val...

Osso, Albert; Llebot, J E

2009-01-01T23:59:59.000Z

230

Role of research reactors in training of NPP personnel with special focus on training reactor VR-1  

Science Conference Proceedings (OSTI)

Research reactors play an important role in providing key personnel of nuclear power plants a hands-on experience from operation and experiments at nuclear facilities. Training of NPP (Nuclear Power Plant) staff is usually deeply theoretical with an extensive utilisation of simulators and computer visualisation. But a direct sensing of the reactor response to various actions can only improve the personnel awareness of important aspects of reactor operation. Training Reactor VR-1 and its utilization for training of NPP operators and other professionals from Czech Republic and Slovakia is described. Typical experimental exercises and good practices in organization of a training program are demonstrated. (authors)

Sklenka, L.; Rataj, J.; Frybort, J.; Huml, O. [Dept. of Nuclear Reactors, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical Univ. in Prague, V Holesovickach 2, Prague 8, 180 00 (Czech Republic)

2012-07-01T23:59:59.000Z

231

Method of determining forest production from remotely sensed forest parameters  

DOE Patents (OSTI)

A method of determining forest production entirely from remotely sensed data in which remotely sensed multispectral scanner (MSS) data on forest 5 composition is combined with remotely sensed radar imaging data on forest stand biophysical parameters to provide a measure of forest production. A high correlation has been found to exist between the remotely sensed radar imaging data and on site measurements of biophysical 10 parameters such as stand height, diameter at breast height, total tree height, mean area per tree, and timber stand volume.

Corey, J.C.; Mackey, H.E. Jr.

1987-08-31T23:59:59.000Z

232

Carbon emissions and sequestration in forests: Case studies from seven developing countries. Volume 1, Summary: Draft  

SciTech Connect

Forests are a major source of carbon dioxide emissions in developing countries, in most cases far exceeding the emissions from the energy sector. To date, however, efforts at quantifying forestry emissions have produced a wide range of results. In order to assist policymakers in developing measures to reduce emissions` levels and to increase carbon sequestration, the Tropical Forest Research Network (F-7) has undertaken this effort to improve the precision of emissions estimates and to identify possible response options in the forestry sector. This paper summarizes the results of one component of this work. The Tropical Forest Research Network (F-7) was established in 1990 as part of the Intergovernmental Panel on Climate Change`s (IPCC) activities in examining growing emissions of greenhouse gases and their potential impact on the global climate. Unlike past methods, this study relied on a network of participants from developing countries to prepare estimates of carbon emissions. The participating countries -- Brazil, China, India, Indonesia, Malaysia, Mexico and Thailand -- currently represent an estimated two-thirds of the annual deforestation of closed moist forests. This study gives an estimate of 837 million tonnes of carbon emissions from deforestation and logging in the F-7 countries in 1990. A proportional projection of these estimates to the tropical biome shows that the total carbon emissions are between 1.1 and 1.7 billion tonnes of carbon, with a working average of 1.4 billion tonnes per year. This work also provides estimates of emissions and uptake from China, which past studies rarely have included. This summary will be followed by individual reports by each of the participating countries, which will include detailed evaluations of possible response options. Estimates for Nigeria are also under preparation.

Makundi, W.; Sathaye, J. [eds.; Cerutti, O.M.

1992-08-01T23:59:59.000Z

233

Carbon emissions and sequestration in forests: Case studies from seven developing countries  

SciTech Connect

Forests are a major source of carbon dioxide emissions in developing countries, in most cases far exceeding the emissions from the energy sector. To date, however, efforts at quantifying forestry emissions have produced a wide range of results. In order to assist policymakers in developing measures to reduce emissions' levels and to increase carbon sequestration, the Tropical Forest Research Network (F-7) has undertaken this effort to improve the precision of emissions estimates and to identify possible response options in the forestry sector. This paper summarizes the results of one component of this work. The Tropical Forest Research Network (F-7) was established in 1990 as part of the Intergovernmental Panel on Climate Change's (IPCC) activities in examining growing emissions of greenhouse gases and their potential impact on the global climate. Unlike past methods, this study relied on a network of participants from developing countries to prepare estimates of carbon emissions. The participating countries -- Brazil, China, India, Indonesia, Malaysia, Mexico and Thailand -- currently represent an estimated two-thirds of the annual deforestation of closed moist forests. This study gives an estimate of 837 million tonnes of carbon emissions from deforestation and logging in the F-7 countries in 1990. A proportional projection of these estimates to the tropical biome shows that the total carbon emissions are between 1.1 and 1.7 billion tonnes of carbon, with a working average of 1.4 billion tonnes per year. This work also provides estimates of emissions and uptake from China, which past studies rarely have included. This summary will be followed by individual reports by each of the participating countries, which will include detailed evaluations of possible response options. Estimates for Nigeria are also under preparation.

Makundi, W.; Sathaye, J. (eds.); Cerutti, O.M.

1992-08-01T23:59:59.000Z

234

Mosquito Control in the Forest Preserves  

NLE Websites -- All DOE Office Websites (Extended Search)

Control in the Forest Preserves Nature Bulletin No. 454-A April 22, 1972 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of...

235

Factors that can influence the onset time of rapid intensification of tropical cyclones  

E-Print Network (OSTI)

The maximum intensity of tropical cyclones in axisymmetricsea interaction theory for tropical cyclones. part i: Steady1995), Sensitivity of tropical cyclones to surface exchange

Bu, Yizhe

2012-01-01T23:59:59.000Z

236

Majoring in Forest Resources & Conservation  

E-Print Network (OSTI)

Majoring in Forest Resources & Conservation University of Florida/IFAS School of Forest Resources & Conservation www.sfrc.ufl.edu ~ 352-846-0847 ~ khaselier@ufl.edu Protected Areas Management is for students interested in managing lands for conservation and restoration purposes, usually on lands owned

Watson, Craig A.

237

Carbon emissions and sequestration in forests: Case studies from seven developing countries. Volume 3, India and China  

DOE Green Energy (OSTI)

As part of the effort to understand the sources of carbon dioxide and other major greenhouse gases, the Tropical Forestry and Global Climate Change Research Network (F-7) was established. The countries taking part in the F-7 Network -- Brazil, China, India, Indonesia, Malaysia, Mexico, Nigeria and Thailand -- possess large tracts of tropical forests and together experience the bulk of large scale tropical deforestation. Integreation of work of indigenous researchers and institutions from the participating countries should allow for the gathering of on-site information into the more general and universally available base of knowledge. The information contained in this report represents the results of the first phase of the F-7 project, which had the explicit aim of providing quantitative data on forestry-related carbon emissions from India and China.

Makundi, W.; Sathaye, J. [eds.] [Lawrence Berkeley Lab., CA (United States); Ravindranath, N.H.; Somashekhar, B.S.; Gadgil, M. [Indian Inst. of Science, Bangalore, (India). Center for Ecological Sciences and ASTRA; Deying, Xu [Chinese Academy of Forestry, Beijing, (China). Research Inst. of Forestry

1992-08-01T23:59:59.000Z

238

Interannual Variability of Northwest Australian Tropical Cyclones  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) activity over the southeast Indian Ocean has been studied far less than other TC basins, such as the North Atlantic and northwest Pacific. The authors examine the interannual TC variability of the northwest Australian (NWAUS)...

Kevin H. Goebbert; Lance M. Leslie

2010-09-01T23:59:59.000Z

239

Tropical Squall Lines of the Arizona Monsoon  

Science Conference Proceedings (OSTI)

Squall lines possessing nearly all the characteristics of tropical squall lines occasionally develop during the summer monsoon over southern Arizona and northwestern Mexico. Initial thunderstorm formation is over the Continental Divide in the ...

Walter P. Smith; Robert L. Gall

1989-07-01T23:59:59.000Z

240

Tropical Transition of the 2001 Australian Duck  

Science Conference Proceedings (OSTI)

In March 2001, a hybrid low pressure system, unofficially referred to as Donald (or the Duck), developed in the Tasman Sea under tropical–extratropical influence, making landfall on the southeastern Australian coast. Here, it is shown that ...

Luke Andrew Garde; Alexandre Bernardes Pezza; John Arthur Tristram Bye

2010-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

On Climate Prediction in the Tropics  

Science Conference Proceedings (OSTI)

Climatic disasters are common in many tropical regions, and rainfall anomalies in particular have a severe human impact. Accordingly, both the World Climate Programme and the U.S. National Climate Program have identified climate prediction as a ...

Stefan Hastenrath

1986-06-01T23:59:59.000Z

242

Tropical Atlantic Biases in CCSM4  

Science Conference Proceedings (OSTI)

This paper focuses on diagnosing biases in the seasonal climate of the tropical Atlantic in the twentieth-century simulation of the Community Climate System Model, version 4 (CCSM4). The biases appear in both atmospheric and oceanic components. ...

Semyon A. Grodsky; James A. Carton; Sumant Nigam; Yuko M. Okumura

2012-06-01T23:59:59.000Z

243

Tropical Storm Formation in a Baroclinic Environment  

Science Conference Proceedings (OSTI)

An analysis is presented of the large-scale conditions associated with the initial development of Tropical Storm Diana (September 1984) in a baroclinic environment. Ordinary extratropical wave cyclogenesis began along an old frontal boundary east ...

Lance F. Bosart; Joseph A. Bartlo

1991-08-01T23:59:59.000Z

244

Tropical Thermostats and Low Cloud Cover  

Science Conference Proceedings (OSTI)

The ability of subtropical stratus low cloud cover to moderate or amplify the tropical response to climate forcing such as increased CO2 is considered. Cloud radiative forcing over the subtropics is parameterized using an empirical relation ...

R. L. Miller

1997-03-01T23:59:59.000Z

245

Rapid Filamentation Zones in Intense Tropical Cyclones  

Science Conference Proceedings (OSTI)

Intense tropical cyclones often possess relatively little convection around their cores. In radar composites, this surrounding region is usually echo-free or contains light stratiform precipitation. While subsidence is typically quite pronounced ...

Christopher M. Rozoff; Wayne H. Schubert; Brian D. McNoldy; James P. Kossin

2006-01-01T23:59:59.000Z

246

Thermodynamic Aspects of Tropical Cyclone Formation  

Science Conference Proceedings (OSTI)

The thermodynamic aspects of tropical cyclone (TC) formation near the center of the wave pouch, a region of approximately closed Lagrangian circulation within the wave critical layer, are examined through diagnoses of a high-resolution numerical ...

Zhuo Wang

2012-08-01T23:59:59.000Z

247

Experiments with a Spectral Tropical Cyclone Model  

Science Conference Proceedings (OSTI)

The three-layer balanced axisymmetric tropical cyclone model presented by Ooyama is generalized to dimensions and the resultant primitive equations are solved using the spectral (Galerkin) method with Fourier basis functions on a doubly-periodic ...

Mark DeMaria; Wayne H. Schubert

1984-03-01T23:59:59.000Z

248

The Maximum Potential Intensity of Tropical Cyclones  

Science Conference Proceedings (OSTI)

A thermodynamic approach to estimating maximum potential intensity (MPI) of tropical cyclones is described and compared with observations and previous studies. The approach requires an atmospheric temperature sounding, SST, and surface pressure; ...

Greg J. Holland

1997-11-01T23:59:59.000Z

249

Tropical Cyclone Lightning and Rapid Intensity Change  

Science Conference Proceedings (OSTI)

A large sample of Atlantic and eastern North Pacific tropical cyclone cases (2005–10) is used to investigate the relationships between lightning activity and intensity changes for storms over water. The lightning data are obtained from the ground-...

Mark DeMaria; Robert T. DeMaria; John A. Knaff; Debra Molenar

2012-06-01T23:59:59.000Z

250

Dynamical Balances and Tropical Stratospheric Upwelling  

Science Conference Proceedings (OSTI)

The dynamical balances associated with upwelling in the tropical lower stratosphere are investigated based on climatological 40-yr ECMWF Re-Analysis (ERA-40) and NCEP–NCAR reanalysis data. Zonal mean upwelling is calculated from momentum balance ...

William J. Randel; Rolando Garcia; Fei Wu

2008-11-01T23:59:59.000Z

251

The Thermal Structure of Tropical Easterly Waves  

Science Conference Proceedings (OSTI)

A procedure is introduced to derive a general balance condition for synoptic-scale disturbances in the tropics. The condition describes a balance between the mean pressure and momentum fields, and the pressure forcing by cumulus clouds. A simple ...

Han-Ruo Cho; Mary Ann Jenkins

1987-09-01T23:59:59.000Z

252

A Numerical Investigation of Tropical Island Thunderstorms  

Science Conference Proceedings (OSTI)

A version of the United Kingdom Meteorological Office mesoscale weather prediction model is used to simulate cases of deep tropical convection from the Island Thunderstorm Experiment off the north coast of Australia. Selected cases contrast ...

B. W. Golding

1993-05-01T23:59:59.000Z

253

Climatic Regimes of Tropical Convection and Rainfall  

Science Conference Proceedings (OSTI)

Annual distribution and phase propagation of tropical convection are delineated using harmonic and amplitude-phase characteristics analysis of climatological pentad mean outgoing longwave radiation and monthly frequencies of highly reflective ...

Bin Wang

1994-07-01T23:59:59.000Z

254

An Observational Analysis of Tropical Cyclone Recurvature  

Science Conference Proceedings (OSTI)

Data for 21 years (1957–77) of North Pacific rawinsondes were examined to investigate the interaction between the synoptic-scale circulation and tropical cyclones prior to, and during, the recurvature process. This study is believed to be the ...

Stephen Hodanish; William M. Gray

1993-10-01T23:59:59.000Z

255

Quasi-balanced Dynamics in the Tropics  

Science Conference Proceedings (OSTI)

We propose a quasi-balance dynamical system of equations for slowly evolving, large-scale motions in the tropics. Unlike other balance schemes, equatorially trapped Kelvin waves are included. Following the lead of Gill, this system is based on ...

Duane E. Stevens; Hung-Chi Kuo; Wayne H. Schubert; Paul E. Ciesielski

1990-10-01T23:59:59.000Z

256

Potential Vorticity Dynamics of Tropical Instability Vortices  

Science Conference Proceedings (OSTI)

Tropical instability vortices (TIVs) in the equatorial Pacific exhibit energetic horizontal and vertical circulation characterized by regions of high Rossby number and low Richardson number. Their strong anticyclonic vorticity and vertical shear ...

Ryan M. Holmes; Leif N. Thomas; LuAnne Thompson; David Darr

257

Tropical Convective Variability as 1/f Noise  

Science Conference Proceedings (OSTI)

Evidence is presented that the tropical convective variability behaves as 1/f noise for a 1–30-day period. This behavior is shown by analyzing the time series of convective available potential energy, which measures the degree of convective ...

Jun-Ichi Yano; Klaus Fraedrich; Richard Blender

2001-09-01T23:59:59.000Z

258

Raindrop Size Distribution Measurements in Tropical Cyclones  

Science Conference Proceedings (OSTI)

Characteristics of the raindrop size distribution in seven tropical cyclones have been studied through impact-type disdrometer measurements at three different sites during the 2004–06 Atlantic hurricane seasons. One of the cyclones has been ...

Ali Tokay; Paul G. Bashor; Emad Habib; Takis Kasparis

2008-05-01T23:59:59.000Z

259

Nasa's Tropical Cloud Systems and Processes Experiment  

Science Conference Proceedings (OSTI)

In July 2005, the National Aeronautics and Space Administration investigated tropical cyclogenesis, hurricane structure, and intensity change in the eastern North Pacific and western Atlantic using its ER-2 high-altitude research aircraft. The ...

J. Halverson; M. Black; R. Rogers; S. Braun; G. Heymsfield; D. Cecil; M. Goodman; R. Hood; A. Heymsfield; T. Krishnamurti; G. McFarquhar; M. J. Mahoney; J. Molinari; J. Turk; C. Velden; D-L. Zhang; E. Zipser; R. Kakar

2007-06-01T23:59:59.000Z

260

Inner Core Strength of Atlantic Tropical Cyclones  

Science Conference Proceedings (OSTI)

The evolution of the wind field beyond the radius of maximum winds is studied for 18 Atlantic tropical cyclones (TCs) with 989 research and reconnaissance flight legs. Inner core strength, defined as the storm relative mean tangential wind from ...

Mark Croxford; Gary M. Barnes

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Momentum Transports Associated with Tropical Cyclone Recurvature  

Science Conference Proceedings (OSTI)

This study attempts to investigate the linear momentum budget responsible for tropical cyclone (TC) recurvature. Using the operational analyses from the U.K. Meteorological Office global model, the environmental flow associated with recurving TCs ...

Y. S. Li; Johnny C. L. Chan

1999-06-01T23:59:59.000Z

262

Building Blocks of Tropical Diabatic Heating  

Science Conference Proceedings (OSTI)

Rotated EOF analyses are used to study the composition and variability of large-scale tropical diabatic heating profiles estimated from eight field campaigns. The results show that the profiles are composed of a pair of building blocks. These are ...

Samson Hagos

2010-07-01T23:59:59.000Z

263

Geostationary Doppler Radar and Tropical Cyclone Surveillance  

Science Conference Proceedings (OSTI)

The potential usefulness of spaceborne Doppler radar as a tropical cyclone observing tool is assessed by conducting a high-resolution simulation of an intense hurricane and generating synthetic observations of reflectivity and radial velocity. The ...

William E. Lewis; Eastwood Im; Simone Tanelli; Ziad Haddad; Gregory J. Tripoli; Eric A. Smith

2011-10-01T23:59:59.000Z

264

Satellite Microwave Surface Observations in Tropical Cyclones  

Science Conference Proceedings (OSTI)

Sea surface estimates of local winds, waves, and rain-rate conditions are crucial to complement infrared/visible satellite images in estimating the strength of tropical cyclones (TCs). Satellite measurements at microwave frequencies are thus key ...

Yves Quilfen; Bertrand Chapron; Jean Tournadre

2010-02-01T23:59:59.000Z

265

Radiation Budget of the Tropical Intraseasonal Oscillation  

Science Conference Proceedings (OSTI)

This study examines the relationship between precipitation and radiative heating on intraseasonal time scales in the Tropics using collocated top-of-atmosphere (TOA) and surface radiative flux measurements from special field program data [...

Jia-Lin Lin; Brian E. Mapes

2004-08-01T23:59:59.000Z

266

Surface Radiation in the Tropical Pacific  

Science Conference Proceedings (OSTI)

Monthly surface radiative fluxes in the tropical Pacific between January 1970 and February 1978 have been calculated using a radiative transfer package which includes detailed treatments of the molecular and droplet absorptions and of the surface ...

Ming-Dah Chou

1985-01-01T23:59:59.000Z

267

Adjoint Sensitivity and Predictability of Tropical Cyclogenesis  

Science Conference Proceedings (OSTI)

The sensitivity of tropical cyclogenesis and subsequent intensification is explored by applying small perturbations to the initial state in the presence of organized mesoscale convection and synoptic-scale forcing using the adjoint and tangent ...

James D. Doyle; Carolyn A. Reynolds; Clark Amerault; Jonathan Moskaitis

2012-12-01T23:59:59.000Z

268

Lag Relationships Involving Tropical Sea Surface Temperatures  

Science Conference Proceedings (OSTI)

A long historical record (100 years) of monthly sea surface temperature anomalies from the Comprehensive Ocean–Atmosphere Data Set was used to examined the lag relationships between different locations in the global Tropics. Application of ...

John R. Lanzante

1996-10-01T23:59:59.000Z

269

Midlevel ventilation's constraint on tropical cyclone intensity  

E-Print Network (OSTI)

Midlevel ventilation, or the flux of low-entropy air into the inner core of a tropical cyclone (TC), is a hypothesized mechanism by which environmental vertical wind shear can constrain a TC's intensity. An idealized ...

Tang, Brian Hong-An

2010-01-01T23:59:59.000Z

270

A Statistical Analysis of Tropical Cyclone Intensity  

Science Conference Proceedings (OSTI)

Cumulative distribution functions (CDFs) of tropical cyclone wind speeds are calculated using best track data from the North Atlantic and western North Pacific basins. Wind speeds are normalized by theoretical potential wind speeds derived from ...

Kerry Emanuel

2000-04-01T23:59:59.000Z

271

Tropical Cyclone Movement and Surrounding Flow Relationships  

Science Conference Proceedings (OSTI)

This paper presents results of a comprehensive study of the relationship between the movement of tropical cyclones and the large-scale circulation which surrounds them. Cyclones have been stratified by direction and speed of movement, latitude, ...

Johnny C. L. Chan; William M. Gray

1982-10-01T23:59:59.000Z

272

Environmental Control of Tropical Cyclone Intensity  

Science Conference Proceedings (OSTI)

The influence of various environmental factors on tropical cyclone intensity is explored using a simple coupled ocean–atmosphere model. It is first demonstrated that this model is capable of accurately replicating the intensity evolution of ...

Kerry Emanuel; Christopher DesAutels; Christopher Holloway; Robert Korty

2004-04-01T23:59:59.000Z

273

Environmental Factors Affecting Tropical Cyclone Power Dissipation  

Science Conference Proceedings (OSTI)

Revised estimates of kinetic energy production by tropical cyclones in the Atlantic and western North Pacific are presented. These show considerable variability on interannual-to-multidecadal time scales. In the Atlantic, variability on time ...

Kerry Emanuel

2007-11-01T23:59:59.000Z

274

Regional Differences in Tropical Lightning Distributions  

Science Conference Proceedings (OSTI)

Observations from the National Aeronautics and Space Administration Optical Transient Detector (OTD) and Tropical Rainfall Measuring Mission (TRMM)-based Lightning Imaging Sensor (LIS) are analyzed for variability between land and ocean, various ...

Dennis J. Boccippio; Steven J. Goodman; Stan Heckman

2000-12-01T23:59:59.000Z

275

AMF Deployment, Black Forest, Germany  

NLE Websites -- All DOE Office Websites (Extended Search)

Germany Germany Black Forest Deployment AMF Home Black Forest Home Data Plots and Baseline Instruments CERA COPS Data University of Hohenheim COPS Website COPS Update, April 2009 Experiment Planning COPS Proposal Abstract and Related Campaigns Science Plan (PDF, 12.4M) Outreach COPS Backgrounder (PDF, 306K) Posters AMF Poster, German Vesion Researching Raindrops in the Black Forest News Campaign Images AMF Deployment, Black Forest, Germany Main Site: 48° 32' 24.18" N, 08° 23' 48.72" E Altitude: 511.43 meters In March 2007, the third deployment of the ARM Mobile Facility (AMF) will take place in the Black Forest region of Germany, where scientists will study rainfall resulting from atmospheric uplift (convection) in mountainous terrain, otherwise known as orographic precipitation. ARM

276

NPP Grassland: Central Plains Experimental Range (SGS), U.S.A.  

NLE Websites -- All DOE Office Websites (Extended Search)

Central Plains Experimental Range (SGS), U.S.A., 1970-1975 Central Plains Experimental Range (SGS), U.S.A., 1970-1975 [PHOTOGRAPH] Photograph: Weather station/exclosure within the CPER site (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Uresk, D., P. L. Sims, and J. L. Dodd. 1996. NPP Grassland: Central Plains Experimental Range (SGS), U.S.A., 1970-1975. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a shortgrass prairie steppe was monitored at the Central Plains Experimental Range (CPER), sometimes referred to as the Pawnee Grassland study site, from 1939 to the present. Measurements of monthly dynamics of above-ground live biomass and dead matter were made from 1970

277

Failure Forewarning in NPP Equipment NERI2000-109 Final Project Report  

SciTech Connect

The objective of this project is forewarning of machine failures in critical equipment at next-generation nuclear power plants (NPP). Test data were provided by two collaborating institutions: Duke Engineering and Services (first project year), and the Pennsylvania State University (Applied Research Laboratory) during the second and third project years. New nonlinear methods were developed and applied successfully to extract forewarning trends from process-indicative, time-serial data for timely, condition-based maintenance. Anticipation of failures in critical equipment at next-generation NPP will improve the scheduling of maintenance activities to minimize safety concerns, unscheduled non-productive downtime, and collateral damage due to unexpected failures. This approach provides significant economic benefit, and is expected to improve public acceptance of nuclear power. The approach is a multi-tiered, model-independent, and data-driven analysis that uses ORNL's novel nonlinear method to extract forewarning of machine failures from appropriate data. The first tier of the analysis provides a robust choice for the process-indicative data. The second tier rejects data of inadequate quality. The third tier removes signal artifacts that would otherwise confound the analysis, while retaining the relevant nonlinear dynamics. The fourth tier converts the artifact-filtered time-serial data into a geometric representation, that is then transformed to a discrete distribution function (DF). This method allows for noisy, finite-length datasets. The fifth tier obtains dissimilarity measures (DM) between the nominal-state DF and subsequent test-state DFs. Forewarning of a machine failure is indicated by several successive occurrences of the DM above a threshold, or by a statistically significant trend in the DM. This paradigm yields robust nonlinear signatures of degradation and its progression, allowing earlier and more accurate detection of the machine failure.

Hively, LM

2004-03-26T23:59:59.000Z

278

USDA Forest Products Laboratory | Open Energy Information  

Open Energy Info (EERE)

Forest Products Laboratory Forest Products Laboratory Jump to: navigation, search Name USDA Forest Products Laboratory Place Madison, WI Website http://www.fpl.fs.fed.us/ References USDA Forest Products Laboratory [1] Information About Partnership with NREL Partnership with NREL Yes Partnership Type Test & Evaluation Partner Partnering Center within NREL Electricity Resources & Building Systems Integration LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! USDA Forest Products Laboratory is a company located in Madison, WI. References ↑ "USDA Forest Products Laboratory" Retrieved from "http://en.openei.org/w/index.php?title=USDA_Forest_Products_Laboratory&oldid=381741" Categories: Clean Energy Organizations Companies Organizations

279

Forest Carbon Portal | Open Energy Information  

Open Energy Info (EERE)

Forest Carbon Portal Forest Carbon Portal Jump to: navigation, search Tool Summary Name: Forest Carbon Portal Agency/Company /Organization: United Nations Development Programme, United States Agency for International Development, United Kingdom Department for International Development, Forest Trends Sector: Land Focus Area: Forestry Topics: GHG inventory Resource Type: Lessons learned/best practices Website: www.forestcarbonportal.com/ Forest Carbon Portal Screenshot References: FCP[1] "Ecosystem Marketplace's Forest Carbon Portal is a clearinghouse of information, feature stories, event listings, project details, 'how-to' guides, news, and market analysis on forest-based carbon sequestration projects. Deforestation and land-use change are responsible for 17% of the

280

Quantitative Assessment of Human-Induced Loss of Offsite Power (HI-LOOP) Event Frequencies at U.S. Commercial Nuclear Power Plants (NPP)  

Science Conference Proceedings (OSTI)

This report provides a framework for developing improved methods and models for quantifying the frequencies of human-induced loss of offsite power (HI-LOOP) initiators at U.S. commercial nuclear power plants (NPPs). Leveraging these methods and models should enhance the NPP probabilistic risk assessment model completeness and would be useful for the NPP on-line risk models. The primary focus of the report is on investigating the impact of human activities on the frequencies of switchyard-centered ...

2013-04-04T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Tropical Cyclogenesis Factors in a Warming Climate  

E-Print Network (OSTI)

Understanding the underlying causes of tropical cyclone formation is crucial to predicting tropical cyclone behavior in a warming environment, given the Earth's current warming trend. This study examines two sets of simulations from the National Center for Atmospheric Research (NCAR) Community Atmosphere Model version 3.1 (CAM3): one with aerosol forcings and one without. We looked at how four factors known to be important to tropical cyclone formation vary as carbon dioxde and the ensuing temperature changes increase to very high levels. These factors include Maximum Potential Intensity (MPI), mid-tropospheric moisture content, 200-850 mb vertical wind shear, and 850 mb absolute vorticity. We considered different representations of mid-tropospheric moisture by examining both relative humidity and chi, a non-dimensional measure of the saturation entropy deficit at 600 mb. We also looked at different combinations of these factors, including several variations of a Genesis Potential Index (GPI) and an incubation parameter, gamma, that is related to the length of time required to saturate the middle troposphere and aid tropical cyclogenesis. Higher MPI, lower saturation deficits and higher relative humidity, lower wind shear, and higher absolute vorticity all act to enhance the GPI and lower the incubation time, meaning larger environmental support for tropical cyclone development and intensification. In areas where tropical cyclone development is prevalent today, we found that shear generally decreased, but MPI decreased, absolute vorticity decreased, and the saturation deficit increases. Thus, in today's prevalent tropical cyclone regions, conditions become less favorable for development and intensification as the climate warms. On the other hand, genesis regions tend to push northward into the subtropics, as conditions become much more favorable for development up to ~40 degrees North due to both decreased wind shear and much higher MPI values.

Cathey, Stephen Christopher

2011-12-01T23:59:59.000Z

282

1CHILE'S FRONTIER FORESTS: CONSERVING A GLOBAL TREASURE FRONTIER FORESTS  

E-Print Network (OSTI)

Claes Hall Aracruz Celulose Sweden Sharon Haines International Paper United States Matti Karjula Stora; The World Bank, World Wildlife Fund; The Nature Conservancy; Aracruz Celulose; Forest and Paper Association

283

Colombia-US Forest Service Program | Open Energy Information  

Open Energy Info (EERE)

Colombia-US Forest Service Program Jump to: navigation, search Name Colombia-US Forest Service Program AgencyCompany Organization United States Forest Service Sector Land Focus...

284

Laboratory Dynamos Professor Cary Forest  

NLE Websites -- All DOE Office Websites (Extended Search)

Dynamos Professor Cary Forest University of Wisconsin - Madison Wednesday, June 5, 2013 - 4:15PM MBG AUDITORIUM Refreshments at 4:00PM The PrinceTon Plasma Physics laboraTory is a...

285

The Influence of Tropical heating Displacements on the Extratropical Climate  

Science Conference Proceedings (OSTI)

The hypothesis is advanced that a latitudinal shift in the tropical convective heating pattern can significantly alter temperatures in the extratropics. Results of a simplified GCM show that the shift of a prescribed tropical heating toward the ...

Arthur Y. Hou

1993-11-01T23:59:59.000Z

286

A Global Climatology of Baroclinically Influenced Tropical Cyclogenesis  

Science Conference Proceedings (OSTI)

Tropical cyclogenesis is generally considered to occur in regions devoid of baroclinic structures; however, an appreciable number of tropical cyclones (TCs) form in baroclinic environments each year. A global climatology of these baroclinically ...

Ron McTaggart-Cowan; Thomas J. Galarneau Jr.; Lance F. Bosart; Richard W. Moore; Olivia Martius

2013-06-01T23:59:59.000Z

287

An Algorithm for Tracking Eyes of Tropical Cyclones  

Science Conference Proceedings (OSTI)

A tropical cyclone (TC) eye tracking (TCET) algorithm is presented in this study to objectively identify and track the eye and center of a tropical cyclone using radar reflectivity data. Twelve typhoon cases were studied for evaluating the TCET ...

Pao-Liang Chang; Ben Jong-Dao Jou; Jian Zhang

2009-02-01T23:59:59.000Z

288

On the Origin of the Tropical Intraseasonal Oscillation  

Science Conference Proceedings (OSTI)

This study provides an explanation for the origin of the tropical intraseasonal (40–50 day) oscillation (TIO) based on a simple generalization of Gill's linear analytic model for tropical large-scale heat-induced circulation. The solution, which ...

Winston C. Chao

1987-08-01T23:59:59.000Z

289

ARM - Field Campaign - Year of Tropical Convection (YOTC)  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsYear of Tropical Convection (YOTC) govCampaignsYear of Tropical Convection (YOTC) Campaign Links Year of Tropical Convection Website Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Year of Tropical Convection (YOTC) 2008.05.01 - 2010.04.30 Lead Scientist : Sally McFarlane Description Example of a sonde profile available from the ARM Archive The realistic representation of tropical convection in global atmospheric models is a long-standing challenge for weather and global climate models. The lack of fundamental knowledge in this area causes difficulties in modeling and predicting prominent phenomena of the tropical atmosphere such as the inter-tropical convergence zone (ITCZ), El-Nino/Southern Oscillation (ENSO), monsoons, the Madden-Julian Oscillation (MJO), tropical cyclones,

290

The Tropical Convective Spectrum. Part I: Archetypal Vertical Structures  

Science Conference Proceedings (OSTI)

A taxonomy of tropical convective and stratiform vertical structures is constructed through cluster analysis of 3 yr of Tropical Rainfall Measuring Mission (TRMM) “warm-season” (surface temperature greater than 10°C) precipitation radar (PR) ...

Dennis J. Boccippio; Walter A. Petersen; Daniel J. Cecil

2005-07-01T23:59:59.000Z

291

Convective Precursors and Predictability in the Tropical Western Pacific  

Science Conference Proceedings (OSTI)

Conditions leading to convective outbreak in the Tropics are investigated by multivariate analysis of sounding and satellite data from the tropical western Pacific area. Circumstances that make the prediction problem difficult are discussed and ...

Steven C. Sherwood

1999-12-01T23:59:59.000Z

292

Lagrangian Study of Tropical Instability Vortices in the Atlantic  

Science Conference Proceedings (OSTI)

Tropical instability waves and tropical instability vortices (TIVs) exert major controls on ocean dynamics, thermodynamics, and biology on intraseasonal to seasonal time scales. To understand the fundamental mechanisms at play, a Lagrangian ...

Pierre Dutrieux; Christophe E. Menkes; Jerome Vialard; Pierre Flament; Bruno Blanke

2008-02-01T23:59:59.000Z

293

Tropical cyclone preparedness and response : opportunities for operations research  

E-Print Network (OSTI)

This thesis explores how operations research methods can be applied in the emergency response community by looking at two recent tropical storm disasters; tropical cyclone Yemyin in Pakistan, June 2007 and super typhoon ...

Murphy, Maurice D

2008-01-01T23:59:59.000Z

294

Choosing a Boundary Layer Parameterization for Tropical Cyclone Modeling  

Science Conference Proceedings (OSTI)

The boundary layer in a tropical cyclone is in some respects unlike that elsewhere in the atmosphere. It is therefore necessary to evaluate boundary layer parameterizations for their suitability for use in tropical cyclone simulation. Previous ...

Jeffrey D. Kepert

2012-05-01T23:59:59.000Z

295

Radar Signatures of Tropical Cyclone Tornadoes in Central North Carolina  

Science Conference Proceedings (OSTI)

During the tropical cyclone season of 2004, there were four tropical cyclones that spawned tornadoes in central North Carolina: Frances, Gaston, Ivan, and Jeanne. This study examines the environmental characteristics and radar signatures from ...

Douglas Schneider; Scott Sharp

2007-04-01T23:59:59.000Z

296

Observational Analysis of Tropical Cyclone Formation Associated with Monsoon Gyres  

Science Conference Proceedings (OSTI)

Large-scale monsoon gyres and the involved tropical cyclone formation over the western North Pacific have been documented in previous studies. The aim of this study is to understand how monsoon gyres affect tropical cyclone formation. An ...

Liguang Wu; Huijun Zong; Jia Liang

2013-04-01T23:59:59.000Z

297

A Model for Transport across the Tropical Tropopause  

Science Conference Proceedings (OSTI)

A model of convective and advective transport across the tropical tropopause is described. In this model overshooting convective turrets inject dehydrated tropospheric air into a tropical “tropopause layer” (TTL) bounded approximately by the 50- ...

Steven C. Sherwood; Andrew E. Dessler

2001-04-01T23:59:59.000Z

298

TRMM Radar Observations of Shallow Precipitation over the Tropical Oceans  

Science Conference Proceedings (OSTI)

Observations from the precipitation radar aboard the Tropical Rainfall Measuring Mission satellite provide the first opportunity to map vertical structure properties of rain over the entire Tropics and subtropics. Storm height histograms reveal a ...

David A. Short; Kenji Nakamura

2000-12-01T23:59:59.000Z

299

Predicting Atlantic Basin Seasonal Tropical Cyclone Activity by 1 August  

Science Conference Proceedings (OSTI)

More than 90% of all seasonal Atlantic tropical cyclone activity typically occurs after 1 August. A strong predictive potential exists that allows seasonal forecasts of Atlantic basin tropical cyclone activity to be issued by 1 August, prior to ...

William M. Gray; Christopher W. Landsea; Paul W. Mielke Jr.; Kenneth J. Berry

1993-03-01T23:59:59.000Z

300

Physical Characterization of Tropical Oceanic Convection Observed in KWAJEX  

Science Conference Proceedings (OSTI)

The Tropical Rainfall Measuring Mission (TRMM) Kwajalein Experiment (KWAJEX) was designed to obtain an empirical physical characterization of precipitating convective clouds over the tropical ocean. Coordinated datasets were collected by three ...

Sandra E. Yuter; Robert A. Houze Jr.; Eric A. Smith; Thomas T. Wilheit; Edward Zipser

2005-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Comments on “Reexamination of Tropical Cyclone Wind–Pressure Relationship”  

Science Conference Proceedings (OSTI)

In their study on the wind–pressure relationship (WPR) that exists in tropical cyclones, Knaff and Zehr presented results of the use of the Dvorak Atlantic WPR for estimating central pressure and maximum wind speed of tropical cyclones. These ...

Shyamnath Veerasamy

2008-08-01T23:59:59.000Z

302

Sensitivity of Tropical Tropospheric Temperature to Sea Surface Temperature Forcing  

Science Conference Proceedings (OSTI)

During El Niño, there are substantial tropospheric temperature anomalies across the entire tropical belt associated with the warming of sea surface temperatures (SSTs) in the central and eastern Pacific. The quasi-equilibrium tropical circulation ...

Hui Su; J. David Neelin; Joyce E. Meyerson

2003-05-01T23:59:59.000Z

303

A Technique for Combining Global Tropical Cyclone Best Track Data  

Science Conference Proceedings (OSTI)

Best track data generally consist of the positions and intensities during the life cycle of a tropical cyclone. Despite the widespread interest in the distribution, frequency, and intensity of tropical cyclones worldwide, no publicly available ...

Michael C. Kruk; Kenneth R. Knapp; David H. Levinson

2010-04-01T23:59:59.000Z

304

On the size distribution of Atlantic tropical cyclones  

E-Print Network (OSTI)

The size of a tropical cyclone is known to vary considerably across storms, though little is understood about the environmental and internal factors that modulate it. Making use of newly available extended tropical cyclone ...

Emanuel, Kerry Andrew

305

Structure of Highly Sheared Tropical Storm Chantal during CAMEX-4  

Science Conference Proceedings (OSTI)

Tropical Storm Chantal during August 2001 was a storm that failed to intensify over the few days prior to making landfall on the Yucatan Peninsula. An observational study of Tropical Storm Chantal is presented using a diverse dataset including ...

G. M. Heymsfield; Joanne Simpson; J. Halverson; L. Tian; E. Ritchie; J. Molinari

2006-01-01T23:59:59.000Z

306

On the Wave Spectrum Generated by Tropical Heating  

Science Conference Proceedings (OSTI)

Convective heating profiles are computed from one month of rainfall rate and cloud-top height measurements using global Tropical Rainfall Measuring Mission and infrared cloud-top products. Estimates of the tropical wave response to this heating ...

David A. Ortland; M. Joan Alexander; Alison W. Grimsdell

2011-09-01T23:59:59.000Z

307

Intraseasonal Behavior of Clouds, Temperature, and Motion in the Tropics  

Science Conference Proceedings (OSTI)

The spectral character of tropical convection is investigated in an 11-yr record of outgoing longwave radiation from the Advanced Very High Resolution Radiometer to identify interaction with the tropical circulation. Along the equator in the ...

Murry L. Salby; Harry H. Hendon

1994-08-01T23:59:59.000Z

308

Sensitivity of Tropical Cyclone Rainbands to Ice-Phase Microphysics  

Science Conference Proceedings (OSTI)

A high-resolution tropical cyclone model with explicit cloud microphysics has been used to investigate the dynamics and energetics of tropical cyclone rainbands. As a first step, the model rainbands have been qualitatively compared with observed ...

Charmaine N. Franklin; Greg J. Holland; Peter T. May

2005-08-01T23:59:59.000Z

309

An Alternative Tropical Cyclone Intensity Forecast Verification Technique  

Science Conference Proceedings (OSTI)

The National Hurricane Center (NHC) does not verify official or model forecasts if those forecasts call for a tropical cyclone to dissipate or if the real tropical cyclone dissipates. A new technique in which these forecasts are included in a ...

Sim D. Aberson

2008-12-01T23:59:59.000Z

310

Improvements to the Operational Tropical Cyclone Wind Speed Probability Model  

Science Conference Proceedings (OSTI)

The National Hurricane Center Hurricane Probability Program, which estimated the probability of a tropical cyclone passing within a specific distance of a selected set of coastal stations, was replaced by the more general Tropical Cyclone Surface ...

Mark DeMaria; John A. Knaff; Michael J. Brennan; Daniel Brown; Richard D. Knabb; Robert T. DeMaria; Andrea Schumacher; Christopher A. Lauer; David P. Roberts; Charles R. Sampson; Pablo Santos; David Sharp; Katherine A. Winters

2013-06-01T23:59:59.000Z

311

Aerosol Effects on Microstructure and Intensity of Tropical Cyclones  

Science Conference Proceedings (OSTI)

Improving the forecasts of the intensity of tropical cyclones (TCs) remains a major challenge. One possibility for improvement is consideration of the effects that aerosols have on tropical clouds and cyclones. The authors have been pursuing this under ...

Daniel Rosenfeld; William L. Woodley; Alexander Khain; William R. Cotton; Gustavo Carrió; Isaac Ginis; Joseph H. Golden

2012-07-01T23:59:59.000Z

312

Regional Variability in Tropical Convection: Observations from TRMM  

Science Conference Proceedings (OSTI)

Observation of the vertical profile of precipitation over the global Tropics is a key objective of the Tropical Rainfall Measuring Mission (TRMM) because this information is central to obtaining vertical profiles of latent heating. This study ...

Walter A. Petersen; Steven A. Rutledge

2001-09-01T23:59:59.000Z

313

A Bayesian Forecast Model of Australian Region Tropical Cyclone Formation  

Science Conference Proceedings (OSTI)

A new and potentially skillful seasonal forecast model of tropical cyclone formation [tropical cyclogenesis (TCG)] is developed for the Australian region. The model is based on Poisson regression using the Bayesian approach. Predictor combinations ...

Angelika Werner; Neil J. Holbrook

2011-12-01T23:59:59.000Z

314

Estimating Rainfall in the Tropics Using the Fractional Time Raining  

Science Conference Proceedings (OSTI)

The relationship between the fractional time raining and tropical rainfall amount is investigated using raingage data and a point process model of tropical rainfall. Both the strength and the nature of the relationship are dependent upon the ...

Mark L. Morrissey; Witold F. Krajewski; Michael J. McPhaden

1994-03-01T23:59:59.000Z

315

Electrically Active Convection in Tropical Easterly Waves and Implications for Tropical Cyclogenesis in the Atlantic and East Pacific  

Science Conference Proceedings (OSTI)

In this study, the authors investigated the characteristics of tropical easterly wave convection and the possible implications of convective structure on tropical cyclogenesis and intensification over the Atlantic Ocean and the east Pacific Ocean. ...

Kenneth D. Leppert II; Walter A. Petersen; Daniel J. Cecil

2013-02-01T23:59:59.000Z

316

Simulated Relationships between Sea Surface Temperatures and Tropical Convection in Climate Models and Their Implications for Tropical Cyclone Activity  

Science Conference Proceedings (OSTI)

The impact of enhanced atmospheric CO2 concentrations on tropical convection and sea surface temperatures (SSTs) over the global tropics is assessed using five fully coupled atmospheric–oceanic general circulation models (AOGCMs). Relationships ...

Jenni L. Evans; Jeffrey J. Waters

2012-11-01T23:59:59.000Z

317

Simulations of the Extratropical Transition of Tropical Cyclones: Phasing between the Upper-Level Trough and Tropical Cyclones  

Science Conference Proceedings (OSTI)

Whether the tropical cyclone remnants will become a significant extratropical cyclone during the reintensification stage of extratropical transition is a complex problem because of the uncertainty in the tropical cyclone, the midlatitude ...

Elizabeth A. Ritchie; Russell L. Elsberry

2007-03-01T23:59:59.000Z

318

Forest Service Special Use Authorization | Open Energy Information  

Open Energy Info (EERE)

Forest Service Special Use Authorization Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Reference Material: Forest Service Special Use Authorization Details...

319

Effect of Tropical Waves on the Tropical Tropopause Transition Layer Upwelling  

Science Conference Proceedings (OSTI)

An initial-value problem is employed with a GCM to investigate the role of the convectively driven Rossby and Kelvin waves for tropopause transition layer (TTL) upwelling in the tropics. The convective heating is mimicked with a prescribed ...

Jung-Hee Ryu; Sukyoung Lee

2010-10-01T23:59:59.000Z

320

The residual mean circulation in the tropical tropopause layer driven by tropical waves  

Science Conference Proceedings (OSTI)

We use latent heating estimates derived from rainfall observations to construct model experiments that isolate equatorial waves forced by tropical convection from mid-latitude synoptic-scale waves. These experiments are used to demonstrate that ...

David A. Ortland; M. Joan Alexander

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Dynamical Tropical Cyclone Track Forecast Errors. Part I: Tropical Region Error Sources  

Science Conference Proceedings (OSTI)

All highly erroneous (>300 n mi or 555 km at 72 h) Navy Operational Global Atmospheric Prediction System (NOGAPS) and U.S. Navy version of the Geophysical Fluid Dynamics Laboratory model (GFDN) tropical cyclone track forecasts in the western ...

Lester E. Carr III; Russell L. Elsberry

2000-12-01T23:59:59.000Z

322

EOS, TRANSACTIONS, AMERICAN GEOPHYSICAL UNION Counting Atlantic Tropical  

E-Print Network (OSTI)

Climate variability and any resulting change in the characteristics of tropical cyclones (tropical storms, subtropical storms, and hurricanes) have become topics of great interest and research within the past 2 years [International Workshop on Tropical Cyclones, 2006]. An emerging focus is how the frequency of tropical cyclones has changed over time and whether any changes could be linked to anthropogenic global warming. The Atlantic is the one tropical cyclone basin that has quantitative records back to the midnineteenth century for the whole basin (i.e., North Atlantic Ocean, Caribbean Sea, and Gulf of Mexico) [Jarvinen et al., 1984; Landsea et al.,

Cyclones Back To

2007-01-01T23:59:59.000Z

323

Recent Advances in Tropical Climate Prediction  

Science Conference Proceedings (OSTI)

A review is given of the current status of long-range forecasting in the low latitudes. Promising leads have developed over the past five years in the seasonal forecasting for certain target regions of the Tropics. Various approaches are of ...

Stefan Hastenrath

1995-06-01T23:59:59.000Z

324

Radiative Forcing of Simulated Tropical Cloud Clusters  

Science Conference Proceedings (OSTI)

A number of field experiments and subsequent studies in the 1970s and 1980s have led to the belief that radiative processes play a more significant role in the evolution of tropical mesoscale convective systems (MCSS) than was once thought. In ...

Rosemary Auld Miller; William M. Frank

1993-02-01T23:59:59.000Z

325

Tropical Cyclone Contribution to Rainfall over Australia  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) rainfall over the Australian continent is studied using observations from 41 TC seasons 1969/70 to 2009/10. A total of 318 storms, whose centers either crossed the coastline or were located within 500?km of the coast, are ...

Richard A. Dare; Noel E. Davidson; John L. McBride

2012-11-01T23:59:59.000Z

326

Tropical Cyclone Tornadoes, 1950–2007  

Science Conference Proceedings (OSTI)

An expanded “climatology” of U.S. tropical cyclone (TC) tornadoes covering the period 1950–2007 is presented. A major climatology published in 1991 included data on 626 TC tornadoes. Since then, almost 1200 more TC tornado records have been ...

Lori A. Schultz; Daniel J. Cecil

2009-10-01T23:59:59.000Z

327

The Interannual Variability of Tropical Cyclones  

Science Conference Proceedings (OSTI)

This paper examines the interannual variability of tropical cyclones in each of the earth’s cyclone basins using data from 1985 to 2003. The data are first analyzed using a Monte Carlo technique to investigate the long-standing myth that the ...

William M. Frank; George S. Young

2007-10-01T23:59:59.000Z

328

Heat Budget of Tropical Ocean and Atmosphere  

Science Conference Proceedings (OSTI)

Heat budget estimates for the global tropics are derived from recent calculations of the oceanic heat budget and satellite measurements of net radiation at the top of the atmosphere. Annual mean heat export from the zone 30°N–30°S amounts to 101 ...

Stefan Hastenrath

1980-02-01T23:59:59.000Z

329

Nonlinear Response to Anomalous Tropical Forcing  

Science Conference Proceedings (OSTI)

We have investigated the nonlinear steady-state response of a barotropic model to an estimate of the observed anomalous tropical divergence forcing for the El Niño winter of 1982/83. The 400 mb climatological flow was made a forced solution of ...

R. J. Haarsma; J. D. Opsteegh

1989-11-01T23:59:59.000Z

330

Rapid Intensification of a Sheared Tropical Storm  

Science Conference Proceedings (OSTI)

A weak tropical storm (Gabrielle in 2001) experienced a 22-hPa pressure fall in less than 3 h in the presence of 13 m s?1 ambient vertical wind shear. A convective cell developed downshear left of the center and moved cyclonically and inward to ...

John Molinari; David Vollaro

2010-10-01T23:59:59.000Z

331

Tropical Cyclone Intensity and Sea Surface Temperature  

Science Conference Proceedings (OSTI)

It is hypothesized that the effect of the SST on the intensity of tropical cyclones can be separated into two distinct contributions: one from the large-scale SST field that is in equilibrium with the atmosphere, and another one from a local ...

Lars R. Schade

2000-09-01T23:59:59.000Z

332

Vol. 5: 207-222,1995 CLIMATE RESEARCH  

E-Print Network (OSTI)

the Harvard Forest, Petersham, Massachusetts (Wofsy et al. 1993).Available data on net primary production (NPP

New Hampshire, University of

333

Comparing simulations of three conceptually different forest models with National Forest Inventory data  

Science Conference Proceedings (OSTI)

Although they were originally introduced for different purposes, forest models are often used today for scenario development, which includes forest production as one aspect of forest development. However, studies using an independent data set to compare ... Keywords: Climate change, Ecosystem model, Forest growth, Increment, Sensitivity, Simulator

Markus O. Huber; Chris S. Eastaugh; Thomas Gschwantner; Hubert Hasenauer; Georg Kindermann; Thomas Ledermann; Manfred J. Lexer; Werner Rammer; Stefan SchöRghuber; Hubert Sterba

2013-02-01T23:59:59.000Z

334

The Implications of Tropical Rossby Waves for Tropical Tropopause Cirrus Formation and for the Equatorial Upwelling of the Brewer–Dobson Circulation  

Science Conference Proceedings (OSTI)

This study puts forward a mechanism for the observed upwelling in the tropical upper troposphere and lower stratosphere. In this hypothesis, the tropical upwelling is driven by momentum transport by Rossby waves that are generated by tropical ...

Matthew T. Boehm; Sukyoung Lee

2003-01-01T23:59:59.000Z

335

Global Forest Resource Assessment | Open Energy Information  

Open Energy Info (EERE)

Global Forest Resource Assessment Global Forest Resource Assessment Jump to: navigation, search Tool Summary Name: Global Forest Resource Assessment Agency/Company /Organization: Food and Agriculture Organization of the United Nations Sector: Land Focus Area: Forestry Topics: Resource assessment Resource Type: Publications Website: www.fao.org/forestry/fra/fra2010/en/ Global Forest Resource Assessment Screenshot References: Global Forest Research Assessment[1] Overview "FAO, in cooperation with its member countries, has monitored the world's forests at 5 to 10 year intervals since 1946. These global assessments provide valuable information to policy-makers in countries, to international negotiations, arrangements and organizations related to forests and to the general public. The Global Forest Resources Assessment

336

International Forest Policy Database | Open Energy Information  

Open Energy Info (EERE)

International Forest Policy Database International Forest Policy Database Jump to: navigation, search Tool Summary LAUNCH TOOL Name: International Forest Policy Database Agency/Company /Organization: GTZ Sector: Land Focus Area: Forestry Topics: Policies/deployment programs Resource Type: Dataset Website: www.etfrn.org/etfrn/topics/policy/index.html International Forest Policy Database Screenshot References: GTZ International Forest Policy Database[1] Overview "This topic page is being developed in cooperation with GTZ-IWP, the International Forest Policy project of the German organisation for international cooperation. GTZ-IWP has contributed considerably to the ETFRN NEWS 41/42 on national forest programmes. During this cooperation both GTZ and ETFRN identified a need for a central point of access to information on international forest

337

International Crops Research Institute for the Semi Arid Tropics | Open  

Open Energy Info (EERE)

Crops Research Institute for the Semi Arid Tropics Crops Research Institute for the Semi Arid Tropics Jump to: navigation, search Name International Crops Research Institute for the Semi-Arid Tropics Place India Sector Biofuels Product Biofuels ( Academic / Research foundation ) References International Crops Research Institute for the Semi-Arid Tropics[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. International Crops Research Institute for the Semi-Arid Tropics is a company located in India . References ↑ "International Crops Research Institute for the Semi-Arid Tropics" Retrieved from "http://en.openei.org/w/index.php?title=International_Crops_Research_Institute_for_the_Semi_Arid_Tropics&oldid=347036

338

The multiple vortex nature of tropical cyclogenesis  

E-Print Network (OSTI)

This thesis contains an observational analysis of the genesis of Tropical Storm Allison (2001). Using a paradigm of tropical cyclone formation as the superposition of potential vorticity (PV) anomalies, the importance of different scales of PV merger to various aspects of Allison?s formation is discussed. While only the case of Allison is discussed in great detail, other studies have also documented PV superposition on various scales, and superposition could be important for most tropical cyclones. Preceding Allison?s genesis, PV superposition on the large scale destabilized the atmosphere and increased low-level cyclonic vorticity. This presented a more favorable environment for the formation of MCV-type PV anomalies and smaller, surface-based, meso-?-scale vortices. Although these vortices eventually merged to form a more concentrated vortex with stronger surface pressure gradients, the merger happened well after landfall of Allison and no strengthening ensued. The unstable, vorticity-rich environment was also favorable for the development of even smaller, meso-?-scale vortices that accompanied deep convective cells within one of Allison?s meso-?-scale vortices. The observations herein suggest that the meso-?- scale convective cells and vortices are the respective source of PV production and building blocks for the meso-?-scale vortices. Finally, this thesis discusses issues related to the multiple vortex nature of tropical cyclone formation. For instance, the tracking of developing tropical cyclones is greatly complicated by the presence of multiple vortices. For these cases, the paradigm of a single cyclone center is inappropriate and alternative tracking methods are introduced.

Sippel, Jason Allen

2004-12-01T23:59:59.000Z

339

Succession and management of tropical dry forests in the Americas: Review and new perspectives  

E-Print Network (OSTI)

Biologia Geral/CCBS, Universidade Estadual de Montes Claros, Montes Claros, Minas Gerais, Brazil e Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil f Department of Environmental

Quesada Avendaño, Mauricio

340

Characterization of trapped lignin-degrading microbes in tropical forest soil  

DOE Green Energy (OSTI)

unamended beads after one and four weeks, suggesting that the lignin supported increased bacterial abundance. The microbial community was analyzed by small subunit 16S ribosomal RNA genes using microarray (PhyloChip) and by high-throughput amplicon pyrosequencing based on universal primers targeting bacterial, archaeal, and eukaryotic communities. Community trends were significantly affected by time and the presence of lignin on the beads. Lignin-amended beads have higher relative abundances of representatives from the phyla Actinobacteria, Firmicutes, Acidobacteria and Proteobacteria compared to unamended beads. This study suggests that in low and fluctuating redox soils, bacteria could play a role in anaerobic lignin decomposition.

DeAngelis, K.M.; Allgaier, M.; Chavarria, Y.; Fortney, J.L.; Hugenholz, P.; Simmons, B.; Sublette, K.; Silver, W.L.; Hazen, T.C.

2011-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Quantifying the biodiversity value of tropical primary, secondary, and plantation forests  

E-Print Network (OSTI)

and home-stead fields where animal manure was regularly applied. Carbon, N, lignin derived phenols and non-celulosic

Barlow, Jos

342

Published online 11 February 2004 Concerted changes in tropical forest structure  

E-Print Network (OSTI)

- das de celulose. Para produzir essa celulose, são ne- cessários 127 metros cúbicos de madeira ou 924

Chave, Jérôme

343

In Search of the Rain Forest  

E-Print Network (OSTI)

oil extraction in Ecuador, the appropriation and industrialization of herbal medicine in the forests of Belize, a critical history

Hamilton-Smith, Elery

2005-01-01T23:59:59.000Z

344

SDPISustainable Development Policy Institute Pakistan Forest  

E-Print Network (OSTI)

#12;SDPISustainable Development Policy Institute Quarterly Pakistan Forest Digest Vol. 01, No. 02 Development Policy Institute Pakistan Forest Digest ii Vol. 1, No. 2, July ­ September 2010 Quarterly Pakistan Board Dr. Urs Geiser Zurich University, Switzerland Dr. Mamoona Wali Muhammad Pakistan Forest Institute

Richner, Heinz

345

SDPISustainable Development Policy Institute Pakistan Forest  

E-Print Network (OSTI)

#12;SDPISustainable Development Policy Institute Quarterly Pakistan Forest Digest Vol. 01, No. 01 Development Policy Institute Pakistan Forest Digest iii Vol. 1, No. 1, April ­ June 2010 Quarterly Pakistan Forest Digest Vol. 01, No. 01 ISBN: 2218-8045 April ­ June 2010 Contents P. No Introductions: Pakistan

Richner, Heinz

346

Scaling Up Economic Instruments for Biodiversity and Ecosystem Service Conservation in the Tropics  

E-Print Network (OSTI)

Global conservation organizations are mainly consumers of expertise in economics. In this essay, I discuss the capacity gaps in economic analysis that prevent all conservation organizations from being more successful. This problem has some urgency because concern for climate change impacts has generated support for increased public investments to conserve natural systems in the tropics not seen since the Brundtland report (World Commission on Environment and Development 1987). Specific landscape management investments are widely recognized to be an efficient response to climate change mitigation and adaptation goals. Economic instruments that incorporate the costs of environmental externalities into private landuse decisions also hold great promise in guiding expansion of biofuel production, and avoiding irreversible losses from new infrastructure and commodity production (Chomitz 2007). Unfortunately, although great strides have been made in the theoretical and practical use of economic instruments for achieving environmental outcomes in tropical landscapes, there are not enough sufficiently trained people to guide or monitor the implementation of these policy tools inside public, private, and NGO-sector institutions in key developing countries (Bonine 2003). There are many more organic farming certifiers than people who know why a forest

Biodiversity; Keith Alger

2008-01-01T23:59:59.000Z

347

Finding Tropical Cyclones on a Cloud Computing Cluster: Using Parallel Virtualization for Large-Scale Climate Simulation Analysis  

E-Print Network (OSTI)

Chang. Changes in Tropical Cyclone Number, Duration, andSimulation of Future Tropical Cyclone Statistics in a High-Finding Tropical Cyclones on a Cloud Computing Cluster:

Hasenkamp, Daren

2011-01-01T23:59:59.000Z

348

Forest Conservation Act (Maryland) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Forest Conservation Act (Maryland) Forest Conservation Act (Maryland) Forest Conservation Act (Maryland) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor Industrial Installer/Contractor Investor-Owned Utility Local Government Municipal/Public Utility Nonprofit Retail Supplier Rural Electric Cooperative State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Maryland Program Type Environmental Regulations Siting and Permitting Provider Maryland Department of Natural Resources The main purpose of Maryland's Forest Conservation Act is to minimize the loss of Maryland's forest resources during land development by making the

349

Development, construction, and use of pneumometric tubes for measurement of steam flow in the steam lines of PVG-1000 at NPP  

Science Conference Proceedings (OSTI)

A system for the direct measurement of steam flow in steam lines after a steam generator, which utilizes a special design of pneumometric tubes and a computing unit that accounts for variation in steam pressure, has been developed to improve the quality of water-level regulation in the steam generators of VVER-1000 power-generating units in the stationary and transitional modes. The advantage of the pneumometric tubes consists in their structural simplicity, high erosion resistance, and absence of irrevocable losses during measurement of steam flow. A similar measurement system is used at foreign NPP. The measurement system in question has been placed in experimental service at the No. 3 unit of the Balakovo NPP, and has demonstrated its worthiness. This measurement system can also be used to determine steam flow in the steam lines of NPP units with VVER-1000 and VVER-440 reactors, and PBMK-1000 power-generating units.

Gorbunov, Yu. S.; Ageev, A. G.; Vasil'eva, R. V.; Korol'kov, B. M. [FGUP 'Elektrogorsk Scientific-Research Center for NPP Safety' (Russian Federation)

2007-05-15T23:59:59.000Z

350

Enhanced Raw Materials Forest Products Environmental Influences on Wood Chemistry and Density of Populus and Loblolly  

E-Print Network (OSTI)

of Sterility in Forest Trees................................................................................................... 2

Hq Program Managers

2005-01-01T23:59:59.000Z

351

Forest Carbon Index | Open Energy Information  

Open Energy Info (EERE)

Forest Carbon Index Forest Carbon Index Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Forest Carbon Index Agency/Company /Organization: Resources for the Future Partner: United Nations Foundation Sector: Land Focus Area: Forestry Topics: Finance, GHG inventory, Market analysis Resource Type: Maps, Software/modeling tools User Interface: Website Website: www.forestcarbonindex.org/ Web Application Link: www.forestcarbonindex.org/maps.html Cost: Free References: Forest Carbon Index [1] The Forest Carbon Index (FCI) compiles and displays global data relating to biological, economic, governance, investment, and market readiness conditions for every forest and country in the world, revealing the best places and countries for forest carbon investments. Please use this site to

352

Sustainable Forest Finance Toolkit | Open Energy Information  

Open Energy Info (EERE)

Sustainable Forest Finance Toolkit Sustainable Forest Finance Toolkit Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Sustainable Forest Finance Toolkit Agency/Company /Organization: World Business Council for Sustainable Development Sector: Land Focus Area: Forestry Topics: Finance Resource Type: Guide/manual Website: www.pwc.co.uk/pdf/forest_finance_toolkit.pdf Sustainable Forest Finance Toolkit Screenshot References: Sustainable Forest Finance Toolkit[1] Overview "This Toolkit has been developed jointly by PricewaterhouseCoopers (PwC) and the World Business Council for Sustainable Development (WBCSD). It is a globally applicable resource designed to help financial institutions support the management of forest resources through sustainable and legal timber production and processing, and markets for carbon and other

353

Experiment to Characterize Tropical Cloud Systems  

SciTech Connect

A major experiment to study tropical convective cloud systems and their impacts will take place around Darwin, Northern Australia in early 2006. The Tropical Warm Pool International Cloud Experiment (TWP-ICE) is a collaboration including the DOE ARM (Atmospheric Radiation Measurement) and ARM-UAV programs, NASA centers, the Australian Bureau of Meteorology, CSIRO, and universities in the USA, Australia, Japan, the UK, and Canada. TWP-ICE will be preceded in November/December 2004 by a collaborating European aircraft campaign involving the EU SCOUT-O3 and UK NERC ACTIVE projects. Detailed atmospheric measurements will be made in the Darwin area through the whole Austral summer, giving unprecedented coverage through the pre-monsoon and monsoon periods.

May, Peter T.; Mather, Jim H.; Jakob, Christian

2005-08-02T23:59:59.000Z

354

Intersecting solitons, amoeba, and tropical geometry  

Science Conference Proceedings (OSTI)

We study the generic intersection (or web) of vortices with instantons inside, which is a 1/4 Bogomol'nyi-Prasad-Sommerfield state in the Higgs phase of five-dimensional N=1 supersymmetric U(N{sub C}) gauge theory on R{sub t}x(C*){sup 2}{approx_equal}R{sup 2,1}xT{sup 2} with N{sub F}=N{sub C} Higgs scalars in the fundamental representation. In the case of the Abelian-Higgs model (N{sub F}=N{sub C}=1), the intersecting vortex sheets can be beautifully understood in a mathematical framework of amoeba and tropical geometry, and we propose a dictionary relating solitons and gauge theory to amoeba and tropical geometry. A projective shape of vortex sheets is described by the amoeba. Vortex charge density is uniformly distributed among vortex sheets, and negative contribution to instanton charge density is understood as the complex Monge-Ampere measure with respect to a plurisubharmonic function on (C*){sup 2}. The Wilson loops in T{sup 2} are related with derivatives of the Ronkin function. The general form of the Kaehler potential and the asymptotic metric of the moduli space of a vortex loop are obtained as a by-product. Our discussion works generally in non-Abelian gauge theories, which suggests a non-Abelian generalization of the amoeba and tropical geometry.

Fujimori, Toshiaki [Department of Physics, Tokyo Institute of Technology Tokyo 152-8551 (Japan); Nitta, Muneto [Department of Physics, Keio University, Hiyoshi, Yokohama, Kanagawa 223-8521 (Japan); Ohta, Kazutoshi [Department of Physics, Tohoku University, Sendai 980-8578 (Japan); Sakai, Norisuke [Department of Mathematics, Tokyo Woman's Christian University, Tokyo 167-8585 (Japan); Yamazaki, Masahito [Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan)

2008-11-15T23:59:59.000Z

355

Rainfall Observation from Tropical Rainfall Measuring Mission (TRMM) Satellite  

Science Conference Proceedings (OSTI)

National Space Development Agency of Japan (NASDA) successfully launched the Tropical Rainfall Measuring Mission (TRMM) observatory at 06:27 (JST) on Nov. 28, 1997. The TRMM satellite carries the first spaceborne Precipitation Radar (PR) which was developed ... Keywords: Clouds and the Earth's Radiant Energy System (CERES), El Niño, Lightning Imaging Sensor (LIS), Precipitation Radar (PR), TRMM Microwave Imager (TMI), Tropical Rainfall Measuring Mission (TRMM), Visible Infrared Scanner (VIRS), heavy rain, tropical cyclone

K. Hiroshima

1999-01-01T23:59:59.000Z

356

Tropical anvil cirrus evolution from observations and numerical...  

NLE Websites -- All DOE Office Websites (Extended Search)

cirrus evolution from observations and numerical simulations Deng, Min University of Utah Mace, Gerald University of Utah Category: Modeling The tropical anvil cirrus formation...

357

The effects of ocean eddies on tropical cyclones.  

E-Print Network (OSTI)

??The purpose of this study is to understand the interactions of tropical cyclones with ocean eddies. In particular we examine the influence of a cold-core… (more)

Miltenberger, Alexander Reid

2012-01-01T23:59:59.000Z

358

The Association of Tall Eyewall Convection with Tropical Cyclone Intensification .  

E-Print Network (OSTI)

??Despite decades of research, operational weather agencies still find it difficult to predict change in the intensity of a tropical cyclone's surface wind. This dissertation… (more)

Kelley, Owen A.

2008-01-01T23:59:59.000Z

359

Tropical Africa: Land Use, Biomass, and Carbon Estimates for...  

NLE Websites -- All DOE Office Websites (Extended Search)

This Numeric Data Package Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNLCDIAC-92, NDP-055. Carbon Dioxide Information...

360

A Lagrangian Interpretation of 3D Tropical Cloud Structure: ...  

NLE Websites -- All DOE Office Websites (Extended Search)

the distributions requires further investigation, the implications are that TWP-Microbase retrieval would provide information about the tropical cloud water content for 2...

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Ocean Barrier Layers’ Effect on Tropical Cyclone Intensification  

SciTech Connect

Improving a tropical cyclone's forecast and mitigating its destructive potential requires knowledge of various environmental factors that influence the cyclone's path and intensity. Herein, using a combination of observations and model simulations, we systematically demonstrate that tropical cyclone intensification is significantly affected by salinity-induced barrier layers, which are 'quasi-permanent' features in the upper tropical oceans. When tropical cyclones pass over regions with barrier layers, the increased stratification and stability within the layer reduce storm-induced vertical mixing and sea surface temperature cooling. This causes an increase in enthalpy flux from the ocean to the atmosphere and, consequently, an intensification of tropical cyclones. On average, the tropical cyclone intensification rate is nearly 50% higher over regions with barrier layers, compared to regions without. Our finding, which underscores the importance of observing not only the upper-ocean thermal structure but also the salinity structure in deep tropical barrier layer regions, may be a key to more skillful predictions of tropical cyclone intensities through improved ocean state estimates and simulations of barrier layer processes. As the hydrological cycle responds to global warming, any associated changes in the barrier layer distribution must be considered in projecting future tropical cyclone activity.

Balaguru, Karthik; Chang, P.; Saravanan, R.; Leung, Lai-Yung R.; Xu, Zhao; Li, M.; Hsieh, J.

2012-09-04T23:59:59.000Z

362

JPL Tropical Cyclone Information System Analysis Tool | Data...  

NLE Websites -- All DOE Office Websites (Extended Search)

JPL Tropical Cyclone Information System Analysis Tool Dataset Summary Description This tool will let you analyze data associated with a storm. You can plot histograms, maps, and...

363

RSS Feeds for Specific Tropical Cyclones of the North Atlantic...  

NLE Websites -- All DOE Office Websites (Extended Search)

RSS Feeds for Specific Tropical Cyclones of the North Atlantic, Caribbean Sea, and Gulf of Mexico (English) Agriculture Community Menu DATA APPS EVENTS DEVELOPER STATISTICS...

364

Geographical Distribution of Biomass Carbon in Tropical Southeast...  

NLE Websites -- All DOE Office Websites (Extended Search)

APPENDIX A: REPRINT OF PERTINENT LITERATURE Brown, S., L. R. Iverson, A. Prasad, and D. Liu. 1993. Geographical distributions of carbon in biomass and soils of tropical Asian...

365

Genesis of Tropical Storm Eugene (2005) from Merging Vortices Associated with ITCZ Breakdowns. Part I: Observational and Modeling Analyses  

Science Conference Proceedings (OSTI)

Although tropical cyclogenesis occurs over all tropical warm ocean basins, the eastern Pacific appears to have the highest frequency of tropical cyclogenesis events per unit area. In this study, tropical cyclogenesis from merging mesoscale ...

Chanh Q. Kieu; Da-Lin Zhang

2008-11-01T23:59:59.000Z

366

Tropical cyclone size in observations and in radiative-convective equilibrium  

E-Print Network (OSTI)

Tropical cyclone size remains an unsolved problem in tropical meteorology, yet size plays a significant role in the damage caused by tropical cyclones due to wind, storm surge, and inland freshwater flooding. This work ...

Chavas, Daniel Robert

2013-01-01T23:59:59.000Z

367

Improving the Detection and Tracking of Tropical Cyclones in Atmospheric General Circulation Models  

Science Conference Proceedings (OSTI)

Dynamical seasonal forecasts of tropical storm frequency require robust and efficient algorithms for detection and tracking of tropical storms in atmospheric general circulation models (AGCMs). Tropical storms are generally detected when dynamic ...

Suzana J. Camargo; Stephen E. Zebiak

2002-12-01T23:59:59.000Z

368

Role of Rossby Waves in the Remote Effects of the North Indian Ocean Tropical Disturbances  

Science Conference Proceedings (OSTI)

Remote effects due to the tropical disturbances in the north Indian Ocean are investigated by analyzing long-lasting (?5 days) tropical disturbances, which reached at least the strength of tropical storms. The present analysis is carried out for ...

J. V. Ratnam; S. K. Behera; Y. Masumoto; T. Yamagata

2012-11-01T23:59:59.000Z

369

Differing Trends in the Tropical Surface Temperatures and Precipitation over Land and Oceans  

Science Conference Proceedings (OSTI)

In the past 50 years, sea surface temperatures (SSTs) in the tropical latitudes have trended toward a warmer ocean state. As a response, tropical land surface temperatures, as well as tropical tropospheric temperatures (as manifested in the ...

Arun Kumar; Fanglin Yang; Lisa Goddard; Siegfried Schubert

2004-02-01T23:59:59.000Z

370

The 30–60-Day Convection Seesaw between the Tropical Indian and Western Pacific Oceans  

Science Conference Proceedings (OSTI)

The tropical Indian and western Pacific oceans are two prominent action centers for tropical 30–60-day convective variability. When convection is enhanced over the equatorial Indian Ocean, the tropical western Pacific often experiences an ...

Baozhen Zhu; Bin Wang

1993-01-01T23:59:59.000Z

371

2–3-Day Convective Variability in the Tropical Western Pacific  

Science Conference Proceedings (OSTI)

This paper is an examination of 2–3-day convective variability in the tropical Pacific region. The initial focus of the paper is on the western tropical Pacific during the Tropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response ...

Carol Anne Clayson; Brian Strahl; Jon Schrage

2002-03-01T23:59:59.000Z

372

Environmental Conditions Prior to Formation of a Midget Tropical Cyclone during TCM-93  

Science Conference Proceedings (OSTI)

During a 10-day period in the Tropical Cyclone Motion (TCM-93) field experiment over the tropical western North Pacific, tropical cyclone formation occurred in association with persistent deep convection that was observed over low-level, north-...

Patrick A. Harr; Michael S. Kalafsky; Russell L. Elsberry

1996-08-01T23:59:59.000Z

373

Global Distribution of Hot Towers in Tropical Cyclones Based on 11-Yr TRMM Data  

Science Conference Proceedings (OSTI)

Global distribution of hot towers in tropical cyclones (TCs) is statistically quantified using an 11-yr Tropical Rainfall Measuring Mission (TRMM) Tropical Cyclone Precipitation Feature (TCPF) database. From 6003 individual TRMM overpasses of 869 ...

Cheng Tao; Haiyan Jiang

2013-02-01T23:59:59.000Z

374

Extratropical Transition of Southwest Pacific Tropical Cyclones. Part I: Climatology and Mean Structure Changes  

Science Conference Proceedings (OSTI)

A database of tropical cyclone best track and intensity information for the southwest Pacific Ocean basin is used to construct a 28-year climatology for tropical cyclones that move into middle latitudes. Of the nine or so tropical cyclones that ...

Mark R. Sinclair

2002-03-01T23:59:59.000Z

375

The Impact of Observational Technology on Climate Database Quality: Tropical Cyclones in the Tasman Sea  

Science Conference Proceedings (OSTI)

The recorded climatology of tropical cyclones that affect the Tasman Sea spans the period from 1911 to the present. This climatology is a subset of the much larger Australian Tropical Cyclone database, which is the official record of all tropical ...

Bruce W. Buckley; Lance M. Leslie; Milton S. Speer

2003-08-01T23:59:59.000Z

376

Tropical Plumes over Eastern North Africa as a Source of Rain in the Middle East  

Science Conference Proceedings (OSTI)

Tropical plumes (TPs) reflect tropical–extratropical interaction associated with the transport of moisture from the Tropics to extratropical latitudes. They are observed in satellite images as continuous narrow cloud bands ahead of upper-level ...

Shira Rubin; Baruch Ziv; Nathan Paldor

2007-12-01T23:59:59.000Z

377

The Unusual Behavior and Precipitation Pattern Associated with Tropical Storm Ignacio (1997)  

Science Conference Proceedings (OSTI)

A case study of eastern North Pacific Tropical Storm Ignacio (1997), which brought rainfall to the southwestern United States as a tropical cyclone and to the northwestern United States as an extratropical cyclone, is presented. This tropical ...

Kimberly M. Wood; Elizabeth A. Ritchie

2012-10-01T23:59:59.000Z

378

Effect of ocean mesoscale variability on the mean state of tropical Atlantic climate  

E-Print Network (OSTI)

J. J. Antonov, 2002: World Ocean Atlas 2001: Objectiveand variability in tropical ocean regions. Clim. Dynm. , 18,air-sea fluxes for Tropical Ocean Global Atmosphere Coupled-

Seo, H; Jochum, M; Murtugudde, R; Miller, A J

2006-01-01T23:59:59.000Z

379

Wild Life Restoration in the Forest Preserves  

NLE Websites -- All DOE Office Websites (Extended Search)

Life Restoration in the Forest Preserves Life Restoration in the Forest Preserves Nature Bulletin No. 613 October 15, 1960 Forest Preserve District of Cook County Daniel Ryan, President Roberts Mann, Conservation Editor David H. Thompson, Senior Naturalist WILD LIFE RESTORATION IN THE FOREST PRESERVES The wealth of wildlife in the Cook County forest preserves rivals that in any of the other 101 Illinois counties, in spite of the fact that over half of the state's people are crowded within its boundaries. The large variety of birds, mammals and other animal life now in this county is possible largely because the Forest Preserve District protects their natural habitats, including many that have been restored. These include timbered rolling uplands, wooded stream valleys, prairie remnants, sand flats, marshes, and a hundred bodies of water. Protection, for as much as forty years, against fire, hunting, trapping and other destruction has allowed the natural comeback of these habitats and the build-up of wildlife populations.

380

Governance of Forests Initiative | Open Energy Information  

Open Energy Info (EERE)

Forests Initiative Forests Initiative Jump to: navigation, search Name Governance of Forests Initiative Agency/Company /Organization World Resources Institute Sector Land Focus Area Forestry Topics Implementation, Policies/deployment programs Resource Type Lessons learned/best practices Website http://www.wri.org/project/gov Country Brazil, Indonesia UN Region Latin America and the Caribbean References WRI-Forests [1] Overview "The Governance of Forests Initiative (GFI) is a collaboration between WRI, the Instituto do Homem e Meio Ambiente da Amazonia (IMAZON), and the Instituto Centro de Vida (ICV) to develop a framework of indicators for assessing and improving governance in the forest sector, as an essential precursor to debating whether and how to unleash market forces to

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

APPENDIX C Colorado Statewide Forest Resource Assessment Protect Forests From Harm  

E-Print Network (OSTI)

on insect and disease activity in the state. Because the current aerial survey is conducted by different1 APPENDIX C ­ Colorado Statewide Forest Resource Assessment Data Gaps Protect Forests From Harm o. Need updated LANDFIRE data on the current condition of Colorado's lodgepole pine forests. Need a fuel

382

China's forest products trade falls nearly 18% China's forest products trade falls nearly 18%  

E-Print Network (OSTI)

China's forest products trade falls nearly 18% China's forest products trade falls nearly 18% 11/08/2009 - 09:05 According to China's latest Customs statistics, foreign trade of China's forest products in the first five months showed a year-on-year general downturn. The total value of foreign trade of China

383

Machine Learning Benchmarks and Random Forest Regression  

E-Print Network (OSTI)

Machine Learning Benchmarks and Random Forest Regressionerror on a suite of benchmark datasets. As the basethe Machine Learning Benchmark Problems package; see http://

Segal, Mark R

2004-01-01T23:59:59.000Z

384

Forest Carbon Partnership Facility | Open Energy Information  

Open Energy Info (EERE)

Forest Carbon Partnership Facility Forest Carbon Partnership Facility Jump to: navigation, search Logo: Forest Carbon Partnership Facility Name Forest Carbon Partnership Facility Agency/Company /Organization World Bank Sector Land Focus Area Forestry Topics Co-benefits assessment, Finance Resource Type Lessons learned/best practices, Training materials Website http://www.forestcarbonpartner Country Argentina, Bolivia, Cambodia, Cameroon, Central African Republic, Chile, Colombia, Costa Rica, Democratic Republic of Congo, El Salvador, Equatorial Guinea, Ethiopia, Gabon, Ghana, Guatemala, Guyana, Honduras, Indonesia, Kenya, Laos, Laos, Liberia, Madagascar, Mexico, Moldova, Mozambique, Nepal, Nicaragua, Panama, Papua New Guinea, Paraguay, Peru, Republic of the Congo, Suriname, Tanzania, Thailand, Uganda, Vanuatu, Vietnam

385

Discriminant Random Forest (DRF) Classification Methodology  

Jupiter Laser Facility. ... State-of-the-art methodologies that perform this type of classification include Support Vector Machines, Neural Networks, and Random Forest.

386

Scientists Classify Forest Disturbances to Grow Understanding...  

NLE Websites -- All DOE Office Websites (Extended Search)

Scientists Classify Forest Disturbances to Grow Understanding of Climate Change Daniel Hayes, shown here outside of Nome, Alaska, traveled to the Arctic in June to study climate...

387

Christian veneer dryer: Forest products fact sheet  

SciTech Connect

Fact sheet written for the Inventions and Innovation Program about a new closed rotary drum dryer for the forest products industry.

NREL

1999-12-14T23:59:59.000Z

388

Black Forest Partners | Open Energy Information  

Open Energy Info (EERE)

Partners Jump to: navigation, search Name Black Forest Partners Place San Francisco, California Zip 94111 Product San Francisco-based project developer focused on building...

389

The Dynamics and Predictability of Tropical Cyclones  

E-Print Network (OSTI)

Through methodology unique for tropical cyclones in peer-reviewed literature, this study explores how the dynamics of moist convection affects the predictability of tropical cyclogenesis. Mesoscale models are used to perform short-range ensemble forecasts of a non-developing disturbance in 2004 and Hurricane Humberto in 2007; both of these cases were highly unpredictable. Taking advantage of discrepancies between ensemble members in short-range ensemble forecasts, statistical correlation is used to pinpoint sources of error in forecasts of tropical cyclone formation and intensification. Despite significant differences in methodology, storm environment and development, it is found in both situations that high convective instability (CAPE) and mid-level moisture are two of the most important factors for genesis. In the gulf low, differences in CAPE are related to variance in quasi-geostrophic lift, and in Humberto the differences are related to the degree of interaction between the cyclone and a nearby front. Regardless of the source of CAPE variance, higher CAPE and mid-level moisture combine to yield more active initial convection and more numerous and strong vortical hot towers (VHTs), which incrementally contribute to a stronger vortex. In both cases, strength differences between ensemble members are further amplified by differences in convection that are related to oceanic heat fluxes. Eventually the WISHE mechanism results in even larger ensemble spread, and in the case of Humberto, uncertainty related to the time of landfall drives spread even higher. It is also shown that initial condition differences much smaller than current analysis error can ultimately control whether or not a tropical cyclone forms. Furthermore, even smaller differences govern how the initial vortex is built. Differences in maximum winds and/or vorticity vary nonlinearly with initial condition differences and depend on the timing and intensity of small mesoscale features such as VHTs and cold pools. Finally, the strong sensitivity to initial condition differences in both cases exemplifies the inherent uncertainties in hurricane intensity prediction. This study illustrates the need for implementing advanced data analysis schemes and ensemble prediction systems to provide more accurate and event-dependent probabilistic forecasts.

Sippel, Jason A.

2008-12-01T23:59:59.000Z

390

Statistical modelling of tropical cyclone tracks: modelling cyclone lysis  

E-Print Network (OSTI)

We describe results from the fifth stage of a project to build a statistical model of tropical cyclone tracks. The previous stages considered genesis and the shape of tracks. We now consider in more detail how to represent the lysis (death) of tropical cyclones. Improving the lysis model turns out to bring a significant improvement to the track model overall.

Hall, T; Hall, Tim; Jewson, Stephen

2005-01-01T23:59:59.000Z

391

Automatic tropical cyclone eye fix using genetic algorithm  

Science Conference Proceedings (OSTI)

Tropical cyclones (TCs) are weather systems with vast destructive power. To forecast TC tracks, forecasters need to locate their circulation centers, or eyes. This eye fix process is often done manually in practice. Since subjective elements are involved ... Keywords: Genetic algorithm, Meteorological computing, Tropical cyclone eye fix, Weather forecasting, Weather system modeling

Ka Yan Wong; Chi Lap Yip; Ping Wah Li

2008-01-01T23:59:59.000Z

392

A Rapid Loss Index for Tropical Cyclone Disasters in China  

Science Conference Proceedings (OSTI)

Disaster emergency response needs rapid estimation on disaster loss. In China it is of great importance to develop a loss index for rapidly assessing tropical cyclone (TC) disaster loss. In this paper, a new composite loss index for TC landing on China ... Keywords: Tropical Cyclone, Disaster, Loss Index, Rapid Loss Assessment

Ying Li; Weihua Fang

2012-06-01T23:59:59.000Z

393

ASSOCIATIONS OF TUNA WITH FLOTSAM IN THE EASTERN TROPICAL PACIFIC  

E-Print Network (OSTI)

ASSOCIATIONS OF TUNA WITH FLOTSAM IN THE EASTERN TROPICAL PACIFIC PAUL R. GREENBLA'IT' ABSTRACT The fishing record for flotsam-associated tuna in the eastern tropical Pacific was examined. The rivers of in an area indicates that unassociated tuna and flotsam-associated tuna are related. The number of sets made

394

Assessing the Skill of Operational Atlantic Seasonal Tropical Cyclone Forecasts  

Science Conference Proceedings (OSTI)

Since 1984, W. Gray of Colorado State University and a team of researchers have been issuing seasonal tropical cyclone forecasts for the North Atlantic Ocean. Prior to this, little work had been done in the area of long-term tropical cyclone ...

Brian F. Owens; Christopher W. Landsea

2003-02-01T23:59:59.000Z

395

Midlevel Ventilation’s Constraint on Tropical Cyclone Intensity  

Science Conference Proceedings (OSTI)

Midlevel ventilation, or the flux of low-entropy air into the inner core of a tropical cyclone (TC), is a hypothesized mechanism by which environmental vertical wind shear can constrain a tropical cyclone’s intensity. An idealized framework based ...

Brian Tang; Kerry Emanuel

2010-06-01T23:59:59.000Z

396

The Direct Response to Tropical Heating in a Baroclinic Atmosphere  

Science Conference Proceedings (OSTI)

The global response to tropical heating is studied by performing a time integration of a 15-level primitive equation model, starting with a basic flow maintained by a constant forcing. The direct, quasi-steady response to the tropical heating is ...

Feifei Jin; Brian J. Hoskins

1995-02-01T23:59:59.000Z

397

The Energy Department Prepares for Tropical Storm Karen | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

The Energy Department Prepares for Tropical Storm Karen The Energy Department Prepares for Tropical Storm Karen The Energy Department Prepares for Tropical Storm Karen October 4, 2013 - 3:00pm Addthis Marissa Newhall Marissa Newhall Managing Editor, Energy.gov What does this mean for me? Follow the latest news on Tropical Storm Karen by visiting the FEMA blog. Stay up-to-date on energy delivery impacts by reading twice-daily situation reports from the Energy Department. Visit ready.gov for more information about emergency preparedness. Editor's note: As of Monday, October 7, 2013, Energy Department reporting about Tropical Storm Karen has concluded, and no additional situation reports will be posted. The Department of Energy (DOE) is working closely with the Federal Emergency Management Agency (FEMA) and in support of state and local

398

A Tropical "NAT-like" belt observed from space  

E-Print Network (OSTI)

The optical properties of cold tropical tropopause clouds are examined on a global scale, using two years of space-borne lidar observations from CALIPSO (June 2006 ? May 2008). The linear depolarization ratio, color ratio and backscatter signal are analyzed in tropical clouds colder than 200 K in a way similar to recent studies of Polar Stratospheric Clouds (PSCs). It is found that the three categories of particles encountered in PSC (Ice, Sulfate Ternary Solutions or STS, and Nitric Acid Trihydrate or NAT) do also occur in tropical cold cloud layers. Particles with optical properties similar to NAT are few, but they cover the tropical belt and represent about 20% of cold cloud tropical particles. The optical behavior of these particles requires them to be small, non-spherical, optically thin, and persistent in the TTL at temperatures colder than 200 K; NAT particles and very small ice crystals meet these criteria.

Chepfer, Hélène; 10.1029/2008GL036289

2009-01-01T23:59:59.000Z

399

EIS-0045: Coal Conversion Program, Continental Forest Industries...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

45: Coal Conversion Program, Continental Forest Industries, Combustors 1,2, and 3, Port Wentworth, Chatham County, Georgia EIS-0045: Coal Conversion Program, Continental Forest...

400

Before the House Subcommittee on National Parks, Forests and...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Parks, Forests and Public Lands - Committee on Natural Resources Before the House Subcommittee on National Parks, Forests and Public Lands - Committee on Natural Resources Before...

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

A Design-Builder's Perspective: Anaerobic Digestion, Forest County...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

A Design-Builder's Perspective: Anaerobic Digestion, Forest County Potawatomi Community - A Case Study A Design-Builder's Perspective: Anaerobic Digestion, Forest County Potawatomi...

402

EIS-0442: Forest Service Reauthorization of Transmission Lines...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Utah and Nebraska for Routine Maintenance Practices including Changes in Vegetation Management EIS-0442: Forest Service Reauthorization of Transmission Lines on Forest Service...

403

Community-Based Forest (Natural) Resource Management: A Path...  

Open Energy Info (EERE)

Based Forest (Natural) Resource Management: A Path to Sustainable Environment and Development Jump to: navigation, search Name Community-Based Forest (Natural) Resource Management:...

404

APPROACHES TO SUSTAINABLE FOREST MANAGEMENT IN PARCELIZED LANDSCAPES.  

E-Print Network (OSTI)

??The holistic, landscape-based approach of Sustainable Forest Management (SFM) in the United States emphasizes the importance of addressing three components of forest management: ecology, community,… (more)

Baumflek, Michelle

405

Nature climate change features Los Alamos forest research  

NLE Websites -- All DOE Office Websites (Extended Search)

Nature climate change features forest research Nature climate change features Los Alamos forest research The print issue features as its cover story the tree-stress research of...

406

Regulation and Moral Hazard in Forest Concessions in Brazil  

E-Print Network (OSTI)

and Forest Concessions in Brazil. Planejamento e Políticaswelfare maximization in Brazil. Rio de Janeiro: IPEA, 1998.in Forest Concessions in Brazil Eduardo A. Tillmann MS.

Balbinotto Neto, Giácomo; Tillmann, Eduardo A; Ratnieks, Ianes

2012-01-01T23:59:59.000Z

407

A Technique for Estimating Recurrence Intervals of Tropical Cyclone-Related High Winds in the Tropics: Results for Guam  

Science Conference Proceedings (OSTI)

The authors develop a technique that applies models of the radial profile of the wind in tropical cyclones to historical best-track databases of tropical cyclones, in order to estimate the wind (at 1-h intervals) experienced at any selected ...

John A. Rupp; Mark A. Lander

1996-05-01T23:59:59.000Z

408

Prediction and Diagnosis of Tropical Cyclone Formation in an NWP System. Part II: A Diagnosis of Tropical Cyclone Chris Formation  

Science Conference Proceedings (OSTI)

This is the second of a three-part investigation into tropical cyclone (TC) genesis in the Australian Bureau of Meteorology’s Tropical Cyclone Limited Area Prediction System (TC-LAPS). The primary TC-LAPS vortex enhancement mechanism (convergence/...

K. J. Tory; M. T. Montgomery; N. E. Davidson; J. D. Kepert

2006-12-01T23:59:59.000Z

409

Climatic regimes of tropical convection and rainfall  

SciTech Connect

Annual distribution and phase propagation of tropical convection are delineated using harmonic and amplitude-phase characteristics analysis of climatological pentad mean outgoing longwave radiation and monthly frequencies of highly reflective cloud. An annual eastward propagation of peak rainy season along the equator from the central Indian Ocean (60[degrees]E) to Arafura Sea (130[degrees]E) is revealed. This indicates a transition from the withdrawal of the Indian summer monsoon to the onset of the Australian summer monsoon. Significant bimodal variations are found around major summer monsoon regions. These variations originate from the interference of two adjacent regimes. The convergence zones over the eastern North Pacific, the South Pacific, and the southwest Indian Ocean are identified as a marine monsoon regime that is characterized by a unimodal variation with a concentrated summer rainfall associated with the development of surface westerlies equatorward of a monsoon trough. Conversely, the central North Pacific and North Atlantic convergence zones between persistent northeast and southeast trades are classified as trade-wind convergence zones; which differ from the marine monsoon regime by their persistent rainy season and characteristic bimodal variation with peak rainy seasons occurring in late spring and fall. The roles of the annual march of sea surface temperature in the phase propagation and formation of various climatic regimes of tropical convection are also discussed. 34 refs., 8 figs., 1 tab.

Wang, Bin (Univ. of Hawaii, Honolulu, HI (United States))

1994-07-01T23:59:59.000Z

410

Nitrogen and Phosphorus Availability in Forests of Varying Ages in the Bartlett Experimental Forest White Mountains, New Hampshire.  

E-Print Network (OSTI)

??Human-induced changes such as nitrogen deposition and forest harvest can alter biogeochemical cycling in temperate forests. However, it is still unclear what impacts increased N… (more)

Ratliff, Tera Jean

2012-01-01T23:59:59.000Z

411

Grazing Management in Broadleaf Forests  

E-Print Network (OSTI)

and Gallandat 1996). Numerous reports also highlight damages caused by cattle grazing on trees and seedlings, and its ill effects on soil, water and environment (Bolt et al. 1978; Clary and Medin, 1990; and Kovalchik and Elmore, 1992). In Journal of Bhutan... in Broadleaf Forests 105 Rubia, Rubus and Solonum form the bulk of the cattle-feed. The number of Viola, Pilea, Elatostema and Aporosa are high but their contribution to herbage production for animal intake is very little as they are tiny...

Norbu, Lungten

2002-01-01T23:59:59.000Z

412

Effects of Nontropical Forest Cover on Climate  

Science Conference Proceedings (OSTI)

The albedo of a forest with snow on the ground is much less than that of snow-covered low vegetation such as tundra. As a result, simulation of the Northern Hemisphere climate, when fully forested south of a suitably chosen taiga/tundra boundary (...

J. Otterman; M-D. Chou; A. Arking

1984-05-01T23:59:59.000Z

413

Gas Turbine Fault Diagnosis using Random Forests  

Science Conference Proceedings (OSTI)

In the present paper, Random Forests are used in a critical and at the same time non trivial problem concerning the diagnosis of Gas Turbine blading faults, portraying promising results. Random forests-based fault diagnosis is treated as a Pattern Recognition ...

Manolis Maragoudakis; Euripides Loukis; Panayotis-Prodromos Pantelides

2008-06-01T23:59:59.000Z

414

PLANAR MEMS SUPERCAPACITOR USING CARBON NANOTUBE FORESTS  

E-Print Network (OSTI)

PLANAR MEMS SUPERCAPACITOR USING CARBON NANOTUBE FORESTS Y.Q. Jiang, Q. Zhou, and L. Lin Mechanical ABSTRACT Planar micro supercapacitors utilizing vertically aligned carbon nanotube (CNT) forests and very robust cycling stability. As such, we believe these planar MEMS supercapacitors could

Lin, Liwei

415

All that jazz in the random forest  

Science Conference Proceedings (OSTI)

In this paper, we address the problem of automatic identification of instruments in audio records, in a frame-by-frame manner. Random forests have been chosen as a classifier. Training data represent sounds of selected instruments which originate from ... Keywords: music information retrieval, random forests, sound recognition

El?bieta Kubera; Miron B. Kursa; Witold R. Rudnicki; Rados?aw Rudnicki; Alicja A. Wieczorkowska

2011-06-01T23:59:59.000Z

416

Steiner Forest Orientation Problems Marek Cygan1  

E-Print Network (OSTI)

Steiner Forest Orientation Problems Marek Cygan1 , Guy Kortsarz2 , and Zeev Nutov3 1 Institute with orientation constra- ints. Given a directed graph D and a collection of ordered node pairs P let P[D] = {(u, v) P : D contains an uv-path}. In the Steiner Forest Orientation problem we are given an undirected

Kortsarz, Guy

417

Steiner Forest Orientation Problems Marek Cygan1  

E-Print Network (OSTI)

Steiner Forest Orientation Problems Marek Cygan1 , Guy Kortsarz2 , and Zeev Nutov3 1 IDSIA with orientation constra- ints. Given a directed graph D and a collection of ordered node pairs P let P[D] = {(u, v) P : D contains a uv-path}. In the Steiner Forest Orientation problem we are given an undirected

Kortsarz, Guy

418

Classifying forest productivity at different scales  

DOE Green Energy (OSTI)

Spatial scale is an important consideration when evaluating, using, or constructing forest productivity classifications. First, the factors which dominate spatial variability in forest productivity are scale dependent. For example, within a stand, spatial variability in productivity is dominated by microsite differences; within a national forest such as the Cherokee National Forest, spatial variability is dominated by topography and land-use history (e.g., years since harvest); within a large region such as the southeast, spatial variability is dominated by climatic patterns. Second, classifications developed at different spatial scales are often used for different purposes. For example, stand-level classifications are often keys or rules used in the field to judge the quality or potential of a site. National-forest classifications are often presented as maps or tables and may be used in forest land planning. Regional classifications may be maps or tables and may be used to quantify or predict resource availability. These scale-related differences in controlling factors and purposes will affect both the methods and the data used to develop classifications. In this paper, I will illustrate these points by describing and comparing three forest productivity classifications, each developed for a specific purpose at a specific scale. My objective is not to argue for or against any of these particular classifications but rather to heighten awareness of the critical role that spatial scale plays in the use and development of forest productivity classifications. 8 refs., 2 figs., 1 tab.

Graham, R.L.

1991-01-01T23:59:59.000Z

419

California's forest resources. Preliminary assessment  

SciTech Connect

This Preliminary Assessment was prepared in response to the California Forest Resources Assessment and Policy Act of 1977 (FRAPA). This Act was passed to improve the information base upon which State resource administrators formulate forest policy. The Act provides for this report and a full assessment by 1987 and at five year intervals thereafter. Information is presented under the following chapter titles: introduction to the forest resources assessment program; the forest area: a general description; classifications of the forest lands; the watersheds; forest lands and the air resource; fish and wildlife resources; the forested rangelands; the wilderness; forest lands as a recreation resource; the timber resource; wood energy; forest lands and the mineral, fossil fuels, and geothermal energy resources; mathematically modeling California's forest lands; vegetation mapping using remote sensing technology; important forest resources legislation; and, State and cooperative State/Federal forestry programs. Twelve indexes, a bibliography, and glossary are included. (JGB)

1979-01-01T23:59:59.000Z

420

SAR Imagery: Rain Forests, South America  

NLE Websites -- All DOE Office Websites (Extended Search)

Images of Rain Forests in South America Images of Rain Forests in South America The ORNL DAAC now offers a CD-ROM volume containing Synthetic Aperture Radar (SAR) imagery of the rain forest region of South America, including the Amazon Basin. The images were collected during 1995-1996 as part of an international project led by the National Space Development Agency of Japan (NASDA) to map the world's rain forest regions to high resolution by means of SAR. The 4-disc volume--entitled "JERS-1 SAR Global Rain Forest Mapping Project: Vol. AM-1, South America"--is made available under the auspices of the Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). These CDs can be ordered through the ORNL DAAC at http://daac.ornl.gov/prepaks.shtml (look for the "LBA" listings).

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Tropical Determinant of Integer Doubly-Stochastic Matrices  

E-Print Network (OSTI)

Let D(m,n) be the set of all the integer points in the m-dilate of the Birkhoff polytope of doubly-stochastic n by n matrices. In this paper we find the sharp upper bound on the tropical determinant over the set D(m,n). We define a version of the tropical determinant where the maximum over all the transversals in a matrix is replaced with the minimum and then find the sharp lower bound on thus defined tropical determinant over D(m,n).

Dinitz, Thomas; Soprunova, Jenya

2010-01-01T23:59:59.000Z

422

Tropical forestry practices for carbon sequestration  

E-Print Network (OSTI)

Carbon sequestration through forestry has the potential to play a significant role in ameliorating global environmental problems such as atmospheric accumulation of GHG's and climate change. This chapter provides an overview of various aspects related to carbon sequestration through forestry. It describes the main concepts of carbon fixation; the trends in global environmental policy are discussed; different forestry practices are listed; examples of existing projects are given; and finally, a case study of a carbon sequestration project in Malaysia is described. The paper also discusses issues related to the quantification of carbon sequestration potential of different forestry options. This section was included with the intention of specifically highlighting some problems related to commercial transactions for carbon sequestration. Key words: carbon sequestration, CO2 offset, tropical forestry, dipterocarps.

Pedro Moura-costa; Innoprise-face Foundation

1996-01-01T23:59:59.000Z

423

Ministry of Forests Forest Science ProgramLandslide Risk Case Studies in Forest Development Planning and Operations  

E-Print Network (OSTI)

Ministry of Forests Forest Science ProgramThe use of trade, firm, or corporation names in this publication is for the information and convenience of the reader. Such use does not constitute an official endorsement or approval by the Government of British Columbia of any product or service to the exclusion of any others that may also be suitable. This document should be regarded as technical information and not as government policy. National Library of Canada Cataloguing in Publication Data Main entry under title. Landslide risk case studies in forest development planning and operations (Land management handbook, ISSN 0229-1622; 56) Includes bibliographical references: p.

Mike Wise; Glenn Moore; Doug Vandine; Mike Wise; Glenn Moore; Doug Vandine

2004-01-01T23:59:59.000Z

424

Global Forest Products Trade by Ed Pepke, EFI  

E-Print Network (OSTI)

Main sources of information · Forest Products Annual Market Review, UNECE/FAOUNECE/FAO · Importance Lacey Act Amendment f. EU renewable (wood) energy policies Forests, Markets, Policy & PracticeGlobal Forest Products Trade by Ed Pepke, EFI Forests, Markets, Policy & Practice Shanghai, China

425

forest certification in guatemala yale school of forestry & environmental studies  

E-Print Network (OSTI)

for the rules and regulations governing the forest concessions and stip- ulating mandatory certification

426

20/02/20132 `State of The Nations' Forests'  

E-Print Network (OSTI)

·Forest Habitat ·Forest Habitat Condition ·Forest Management ·Forest Use ·Carbon Sequestration ·Timber and increment forecast · Carbon forecast (to be published) · Biomass forecast run (to be published / dead Natural Regeneration NVC & ground, field & shrub layer vegetation General health Dead wood

427

2012Report on the Health of Colorado's Forests  

E-Print Network (OSTI)

, Forest Health Protection, USDA Forest Service, Lakewood, Colo. Brian Howell, Aerial Survey Program2012Report on the Health of Colorado's Forests Forest Stewardship through Active Management #12 Sciences and Pest Management, Colorado State University, Fort Collins, Colo. Susan Gray, Program Lead

Stephens, Graeme L.

428

Correspondence of pollen assemblages with forest zones across steep  

E-Print Network (OSTI)

Forest, a rural site near Petersham, Massachusetts pro- vides a chemical climatology for all seasons over

Gavin, Daniel G.

429

The ENSO Teleconnection to the Tropical Atlantic Ocean: Contributions of the Remote and Local SSTs to Rainfall Variability in the Tropical Americas  

Science Conference Proceedings (OSTI)

Recent developments in Tropical Atlantic Variability (TAV) identify the El Niño–Southern Oscillation (ENSO) as one of the leading factors in the interannual climate variability of the basin. An ENSO event results in Tropic-wide anomalies in the ...

Alessandra Giannini; John C. H. Chiang; Mark A. Cane; Yochanan Kushnir; Richard Seager

2001-12-01T23:59:59.000Z

430

National Forest Management Act of 1976 | Open Energy Information  

Open Energy Info (EERE)

Forest Management Act of 1976 Forest Management Act of 1976 Jump to: navigation, search Statute Name National Forest Management Act of 1976 Year 1976 Url [[File:|160px|link=]] Description References Wikipedia[1] USFS Forest Management[2] The National Forest Management Act of 1976 is a federal law that governs the administration of national forests. This act requires the United States Forest Service to use a systematic and interdisciplinary approach to resource management in national forests. The USFS provides a full text of the Act here: Pub. L. 94-588 References ↑ "Wikipedia" ↑ "USFS Forest Management" Retrieved from "http://en.openei.org/w/index.php?title=National_Forest_Management_Act_of_1976&oldid=455235" Categories: Federal Environmental Statutes

431

ARM - Publications: Science Team Meeting Documents: Tropical Warm Pool  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Warm Pool International Cloud Experiment Tropical Warm Pool International Cloud Experiment May, Peter Bureau or Meteorology Research Centre Mather, James Pacific Northwest National Laboratory Jakob, Christian BMRC One of the most complete data sets describing tropical convection ever collected will result from the upcoming Tropical Warm Pool International Cloud Experiment (TWPICE) in the area around Darwin in late 2005 and early 2006. The aims of the experiment will be to examine convective cloud systems from their initial stages through to the decay of the cirrus generated and to measure their impact on the environment. The experiment design includes an unprecedented network of ground-based observations (soundings, active and passive remote sensors) combined with a large range of low, mid and high altitude aircraft for in-situ and remote sensing

432

Tropical Africa: Land Use, Biomass, and Carbon Estimates for...  

NLE Websites -- All DOE Office Websites (Extended Search)

80 image Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNLCDIAC-92, NDP-055. Carbon Dioxide Information Analysis Center, U.S....

433

Tropical Africa: Land Use, Biomass, and Carbon Estimates for...  

NLE Websites -- All DOE Office Websites (Extended Search)

60 image Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNLCDIAC-92, NDP-055. Carbon Dioxide Information Analysis Center, U.S....

434

Tropical Africa: Land Use, Biomass, and Carbon Estimates for...  

NLE Websites -- All DOE Office Websites (Extended Search)

70 image Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNLCDIAC-92, NDP-055. Carbon Dioxide Information Analysis Center, U.S....

435

Spatial Coherence of Tropical Rainfall at the Regional Scale  

Science Conference Proceedings (OSTI)

This study examines the spatial coherence characteristics of daily station observations of rainfall in five tropical regions during the principal rainfall season(s): the Brazilian Nordeste, Senegal, Kenya, northwestern India, and northern ...

Vincent Moron; Andrew W. Robertson; M. Neil Ward; Pierre Camberlin

2007-11-01T23:59:59.000Z

436

Simulation of Tropical Climate with a Linear Primitive Equation Model  

Science Conference Proceedings (OSTI)

The tropical climate simulated with a new global atmosphere model is presented. The model is purposely designed for climate studies and is still under development. It is designed to bridge the gap between very efficient but simple models of the ...

Richard Seager; Stephen E. Zebiak

1995-10-01T23:59:59.000Z

437

The Tropical Rainfall Measuring Mission (TRMM) Sensor Package  

Science Conference Proceedings (OSTI)

This note is intended to serve primarily as a reference guide to users wishing to make use of the Tropical Rainfall Measuring Mission data. It covers each of the three primary rainfall instruments: the passive microwave radiometer, the ...

Christian Kummerow; William Barnes; Toshiaki Kozu; James Shiue; Joanne Simpson

1998-06-01T23:59:59.000Z

438

Weak Simulated Extratropical Responses to Complete Tropical Deforestation  

Science Conference Proceedings (OSTI)

The Geophysical Fluid Dynamics Laboratory atmosphere–land model version 2 (AM2/LM2) coupled to a 50-m-thick slab ocean model has been used to investigate remote responses to tropical deforestation. Magnitudes and significance of differences ...

Kirsten L. Findell; Thomas R. Knutson; P. C. D. Milly

2006-06-01T23:59:59.000Z

439

Control of the Tropical Tropopause and Vertical Transport across It  

Science Conference Proceedings (OSTI)

A 3D primitive equation model is used to investigate how the tropical tropopause is influenced by cumulus convection in the troposphere and mean upwelling in the stratosphere. The model simulates the residual mean circulation explicitly, whereas ...

Murry Salby; Patrick Callaghan

2004-03-01T23:59:59.000Z

440

Tropical Convection and Precipitation Regimes in the Western United States  

Science Conference Proceedings (OSTI)

The authors have documented the relationship between tropical convection and precipitation regimes in the western United States. Circulation patterns associated with precipitation regimes are described and physical mechanisms are proposed. ...

Kingtse C. Mo; R. W. Higgins

1998-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

On the Relationship between Tropical Convection and Sea Surface Temperature  

Science Conference Proceedings (OSTI)

Tropical observations show convective activity increasing sharply above sea surface temperatures (SSTs) of around 26°C and then decreasing as the SST exceeds 30°C, with maximum observed SSTs of around 32°C.Although some aspects of this ...

Adrian M. Tompkins

2001-03-01T23:59:59.000Z

442

Variations in the Tropical Greenhouse Effect during El Niño  

Science Conference Proceedings (OSTI)

Observations of the clear-sky outgoing longwave radiation and sea surface temperature are combined to examine the evolution of the tropical greenhouse effect from colder La Niña conditions in early 1985 to warmer El Niño conditions in late 1987. ...

Brian J. Soden

1997-05-01T23:59:59.000Z

443

Global Warming and the Weakening of the Tropical Circulation  

Science Conference Proceedings (OSTI)

This study examines the response of the tropical atmospheric and oceanic circulation to increasing greenhouse gases using a coordinated set of twenty-first-century climate model experiments performed for the Intergovernmental Panel on Climate ...

Gabriel A. Vecchi; Brian J. Soden

2007-09-01T23:59:59.000Z

444

Mechanisms of Remote Tropical Surface Warming during El Niño  

Science Conference Proceedings (OSTI)

The authors demonstrate through atmospheric general circulation model (the Community Climate Model version 3.10) simulations of the 1997/98 El Niño that the observed “remote” (i.e., outside the Pacific) tropical land and ocean surface warming ...

John C. H. Chiang; Benjamin R. Lintner

2005-10-01T23:59:59.000Z

445

Modeling Study of a Tropical Squall-Type Convective Line  

Science Conference Proceedings (OSTI)

A multidimensional and time-dependent cloud scale model is used to investigate the dynamic and micro-physical processes associated with convective and stratiform regions within a tropical squall-type convective line. The evolution of the total ...

Wei-Kuo Tao; Joanne Simpson

1989-01-01T23:59:59.000Z

446

Estimating Local Memory of Tropical Cyclones through MPI Anomaly Evolution  

Science Conference Proceedings (OSTI)

This study examines the local memory of atmospheric and oceanic changes associated with a tropical cyclone (TC). The memory is quantified through anomalous maximum potential intensity (MPI) evolution for 20 days prior to the arrival of a TC ...

Robert E. Hart; Ryan N. Maue; Michael C. Watson

2007-12-01T23:59:59.000Z

447

On Estimates of Historical North Atlantic Tropical Cyclone Activity  

Science Conference Proceedings (OSTI)

In this study, an estimate of the expected number of Atlantic tropical cyclones (TCs) that were missed by the observing system in the presatellite era (between 1878 and 1965) is developed. The significance of trends in both number and duration ...

Gabriel A. Vecchi; Thomas R. Knutson

2008-07-01T23:59:59.000Z

448

Convective Storm Initiation in a Moist Tropical Environment  

Science Conference Proceedings (OSTI)

Radar and satellite data from the Tropical Rainfall Measuring Mission–Large-Scale Biosphere–Atmosphere (TRMM–LBA) project have been examined to determine causes for convective storm initiation in the southwest Amazon region. The locations and ...

Maria Andrea Lima; James W. Wilson

2008-06-01T23:59:59.000Z

449

Thermodynamic Environments of Deep Convection in Atlantic Tropical Disturbances  

Science Conference Proceedings (OSTI)

Conditional composites of dropsondes deployed into eight tropical Atlantic weather systems during 2010 are analyzed. The samples are conditioned based on cloud-top temperature within 10 km of the dropsonde, the radius from the cyclonic circulation ...

Christopher A. Davis; David A. Ahijevych

2013-07-01T23:59:59.000Z

450

Atmospheric Radiation Measurement Tropical Warm Pool International Cloud Experiment  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Warm Pool Tropical Warm Pool International Cloud Experiment General Description The Tropical Warm Pool - International Cloud Experiment (TWP-ICE) was a collaborative effort led by the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Program and the Australian Bureau of Meteorology. Beginning January 21 and ending February 14, 2006, the experiment was conducted in the region near the ARM Climate Research Facility in Darwin, Northern Australia. This permanent facility is fully equipped with sophisticated instruments for measuring cloud and other atmospheric properties to provide a long-term record of continuous observational data. Measurements obtained from the other experiment components (explained below) will complement this dataset to provide a detailed description of the tropical atmosphere.

451

ARM - Field Campaign - Tropical Ocean Global Atmosphere Coupled  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsTropical Ocean Global Atmosphere Coupled Ocean-Atmosphere govCampaignsTropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Exp Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Tropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Exp 1992.07.11 - 1993.02.28 Lead Scientist : Chuck Long Data Availability Final data available. For data sets, see below. Summary IOP completed. Description The Tropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Experiment (TOGA-COARE) was conducted to better understand the structure of the coupled system of the warm pool of the western Pacific Ocean. Hundreds of participants from dozens of countries took part in this experiment from November 1, 1992 through February 28, 1993. Campaign Data Sets

452

Patterns of Convection in the Tropical Western Pacific  

NLE Websites -- All DOE Office Websites (Extended Search)

Patterns of Convection in the Tropical Western Pacific Patterns of Convection in the Tropical Western Pacific J. H. Mather Pacific Northwest National Laboratory Richland, Washington Introduction Convection is ubiquitous throughout the maritime continent region. However, the frequency of convec- tion is not uniform. While much of this region does not experience seasons to the same degree as one finds in mid-latitudes, the annual cycle of the sun's passage does have a large impact on convection throughout the maritime continent and the tropical western Pacific. The distribution of islands also affects convection in a variety of ways. Atmospheric Radiation Measurement (ARM) Program has three sites in the Tropical Western Pacific (TWP) region, illustrated in Figure 1. The sites are located on Manus, Nauru, and at Darwin, Australia.

453

Properties of tropical convection observed by ARM millimeter-radars  

NLE Websites -- All DOE Office Websites (Extended Search)

Properties of tropical convection observed by ARM millimeter-radars Properties of tropical convection observed by ARM millimeter-radars Haynes, John Colorado State University Stephens, Graeme Colorado State University Category: Cloud Properties The results of an analysis of tropical cloud systems observed from a variety of vertically pointing radar systems are described. In particular, observations taken during five years of operation of the ARM millimeter wavelength radar system (MMCR) at Manus Island in the Tropical West Pacific region are characterized into cloud classes according to the radar reflectivity structures of these cloud systems, associated rainfall, and surface radiative properties. These observations of cloud properties are composited with respect to various phases of the Madden Julian Oscillation, which is a dominant mode of variability at Manus Island. A method of better

454

Lunty Tropical Fish Aquaculture Low Temperature Geothermal Facility | Open  

Open Energy Info (EERE)

Lunty Tropical Fish Aquaculture Low Temperature Geothermal Facility Lunty Tropical Fish Aquaculture Low Temperature Geothermal Facility Jump to: navigation, search Name Lunty Tropical Fish Aquaculture Low Temperature Geothermal Facility Facility Lunty Tropical Fish Sector Geothermal energy Type Aquaculture Location Buhl, Idaho Coordinates 42.5990714°, -114.7594946° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

455

Dendritic Patterns in Tropical Cumulus: An Observational Analysis  

Science Conference Proceedings (OSTI)

An observational analysis of the structure and synoptic setting of tropical dendritic cumulus formations was undertaken using 30 months of global data from the Moderate Resolution Imaging Spectroradiometer aboard the National Aeronautics and ...

Stephen D. Nicholls; George S. Young

2007-05-01T23:59:59.000Z

456

Convective Impact on Temperatures Observed near the Tropical Tropopause  

Science Conference Proceedings (OSTI)

Observed temperature trends and interannual variations near the tropical tropopause suggest that temperatures up to the cold point are controlled by the troposphere, but some models indicate otherwise. Here, previous investigations of thermal ...

Steven C. Sherwood; Takeshi Horinouchi; Heidi A. Zeleznik

2003-08-01T23:59:59.000Z

457

Vertical Velocity Structures in an Axisymmetric, Nonhydrostatic Tropical Cyclone Model  

Science Conference Proceedings (OSTI)

A statistical analysis of several experiments with different microphysical parameterizations in an axisymmetric, nonhydrostatic tropical cyclone model illustrates the impact of icc-phase microphysics on model vertical velocity structure. The ...

Stephen J. Lord; Jacqueline M. Lord

1988-05-01T23:59:59.000Z

458

Effects of Penetrative Radiation on the Upper Tropical Ocean Circulation  

Science Conference Proceedings (OSTI)

The effects of penetrative radiation on the upper tropical ocean circulation have been investigated with an ocean general circulation model (OGCM) with attenuation depths derived from remotely sensed ocean color data. The OGCM is a reduced ...

Raghu Murtugudde; James Beauchamp; Charles R. McClain; Marlon Lewis; Antonio J. Busalacchi

2002-03-01T23:59:59.000Z

459

Influence of cloud-radiative forcing on tropical cyclone structure  

Science Conference Proceedings (OSTI)

We demonstrate how and why cloud-radiative forcing (CRF), the interaction of hydrometeors with longwave and shortwave radiation, can influence tropical cyclone structure through “semi-idealized” integrations of the Hurricane Weather Research and ...

Yizhe Peggy Bu; Robert G. Fovell; Kristen L. Corbosiero

460

Numerical Simulation of Atmospheric Response to Pacific Tropical Instability Waves  

Science Conference Proceedings (OSTI)

Tropical instability waves (TIWs) are 1000-km-long waves that appear along the sea surface temperature (SST) front of the equatorial cold tongue in the eastern Pacific. The study investigates the atmospheric planetary boundary layer (PBL) ...

R. Justin Small; Shang-Ping Xie; Yuqing Wang

2003-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "npp tropical forest" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

A Potential Vorticity Tendency Diagnostic Approach for Tropical Cyclone Motion  

Science Conference Proceedings (OSTI)

In order to understand the roles of various physical processes in baroclinic tropical cyclone (TC) motion and the vertical coupling between the upper- and lower-level circulations, a new dynamical framework is advanced. A TC is treated as a ...

Liguang Wu; Bin Wang

2000-06-01T23:59:59.000Z

462

Tropical Intraseasonal Oscillation, Super Cloud Clusters, and Cumulus Convection Schemes  

Science Conference Proceedings (OSTI)

A new framework for interpreting the origin of the tropical intraseasonal oscillation (TISO), which avoids the speed and scale selection problems in the previous theories, is proposed in this study. In this interpretation TISO is viewed as an ...

Winston C. Chao; Shian-Jiann Lin

1994-05-01T23:59:59.000Z

463

Evaluation of Tropical Cirrus Cloud Properties and Dynamical...  

NLE Websites -- All DOE Office Websites (Extended Search)

through the TTL into the stratosphere. The ability of large-scale models to correctly forecast tropical cirrus occurrence is important in predicting the role of these clouds on...

464

The Boundary Layer of Tropical Cyclone Kerry (1979)  

Science Conference Proceedings (OSTI)

The boundary layer structure of Tropical Cyclone Kerry (1979) is investigated using composite analysis of research aircraft, surface ship, and automatic weather station observations. The boundary layer was moist, convective, and strongly ...

Peter G. Black; Greg J. Holland

1995-07-01T23:59:59.000Z

465

Tropical cyclone eye fix using genetic algorithm with temporal information  

Science Conference Proceedings (OSTI)

Tropical cyclones (TCs) are weather systems with vast destructive power. To give early TC warnings, accurate location of their circulation centers, or “eyes”, is required. The pattern matching solution to this TC eye fix problem works by ...

Ka Yan Wong; Chi Lap Yip

2005-09-01T23:59:59.000Z

466

Rapid Development of the Tropical Cyclone Warm Core  

Science Conference Proceedings (OSTI)

This paper presents a simple theoretical argument to isolate the conditions under which a tropical cyclone can rapidly develop a warm-core thermal structure and subsequently approach a steady state. The theoretical argument is based on the ...

Jonathan L. Vigh; Wayne H. Schubert

2009-11-01T23:59:59.000Z

467

A Comparison of Two Tropical Cyclone Bogussing Schemes  

Science Conference Proceedings (OSTI)

The impact of two bogussing schemes on tropical cyclone (TC) forecasts is compared. One scheme for bogussing TCs into the initial conditions of the nonhydrostatic version of the fifth-generation Pennsylvania State University–National Center for ...

Dongliang Wang; Xudong Liang; Ying Zhao; Bin Wang

2008-02-01T23:59:59.000Z

468

Experimental Dynamical Seasonal Forecasts of Tropical Cyclone Activity at IRI  

Science Conference Proceedings (OSTI)

The International Research Institute for Climate and Society (IRI) has been issuing experimental seasonal tropical cyclone activity forecasts for several ocean basins since early 2003. In this paper the method used to obtain these forecasts is ...

Suzana J. Camargo; Anthony G. Barnston

2009-04-01T23:59:59.000Z

469

Effects of Vertical Wind Shear on Tropical Cyclone Precipitation  

Science Conference Proceedings (OSTI)

The response of the precipitation field for tropical cyclones in relation to the surrounding environmental vertical wind shear has been investigated using 20 000 snapshots of passive-microwave satellite rain rates. Composites of mean rain rates, ...

Matthew T. Wingo; Daniel J. Cecil

2010-03-01T23:59:59.000Z

470

Seasonal versus permanent thermocline warming by tropical cyclones  

E-Print Network (OSTI)

Recent studies suggest that the enhanced upper ocean mixing caused by tropical cyclones significantly contributes to the ocean heat transport. However, existing studies that try to quantify this contribution make the ...

Ferrari, Raffaele

471

The effects of ocean eddies on tropical cyclones  

E-Print Network (OSTI)

The purpose of this study is to understand the interactions of tropical cyclones with ocean eddies. In particular we examine the influence of a cold-core eddy on the cold wake formed during the passage of Typhoon Fanapi ...

Miltenberger, Alexander Reid

2012-01-01T23:59:59.000Z

472

An elastic contour matching model for tropical cyclone pattern recognition  

Science Conference Proceedings (OSTI)

In this paper, an elastic graph dynamic link model (EGDLM) based on elastic contour matching is proposed to automate the Dvorak technique for tropical cyclone (TC) pattern interpretation from satellite images. This method integrates traditional dynamic ...

R. S.T. Lee; J. N.K. Lin

2001-06-01T23:59:59.000Z

473

Impact of Duration Thresholds on Atlantic Tropical Cyclone Counts  

Science Conference Proceedings (OSTI)

Records of Atlantic basin tropical cyclones (TCs) since the late nineteenth century indicate a very large upward trend in storm frequency. This increase in documented TCs has been previously interpreted as resulting from anthropogenic climate ...

Christopher W. Landsea; Gabriel A. Vecchi; Lennart Bengtsson; Thomas R. Knutson

2010-05-01T23:59:59.000Z

474

Experiments with a Simple Tropical Cyclone Intensity Consensus  

Science Conference Proceedings (OSTI)

Consensus forecasts (forecasts created by combining output from individual forecasts) have become an integral part of operational tropical cyclone track forecasting. Consensus aids, which generally have lower average errors than individual models,...

Charles R. Sampson; James L. Franklin; John A. Knaff; Mark DeMaria

2008-04-01T23:59:59.000Z

475

Sensitivity of Tropical Cyclone Forecasts as Revealed by Singular Vectors  

Science Conference Proceedings (OSTI)

Singular vector (SV) sensitivity, calculated using the adjoint model of the U.S. Navy Operation Global Atmosphere Prediction System (NOGAPS), is used to study the dynamics associated with tropical cyclone evolution. For each model-predicted ...

Melinda S. Peng; Carolyn A. Reynolds

2006-10-01T23:59:59.000Z

476

On the Height of the Warm Core in Tropical Cyclones  

Science Conference Proceedings (OSTI)

The warm-core structure of tropical cyclones is examined in idealized simulations using the Weather Research and Forecasting (WRF) Model. The maximum perturbation temperature in a control simulation occurs in the midtroposphere (5–6 km), in ...

Daniel P. Stern; David S. Nolan

2012-05-01T23:59:59.000Z

477

Climatological Variations in North Atlantic Tropical Cyclone Tracks  

Science Conference Proceedings (OSTI)

This study investigates the relationship between tropical cyclone (TC) tracks and climatological variations in large-scale environmental parameters associated with the TC steering flow. By using the Atlantic Ocean hurricane database for 1950–2010, ...

Angela J. Colbert; Brian J. Soden

2012-01-01T23:59:59.000Z

478

The Response of Quasigeostrophic Oceanic Vortices to Tropical Cyclone Forcing  

Science Conference Proceedings (OSTI)

The response of quasigeostrophic (QG) oceanic vortices to tropical cyclone (TC) forcing is investigated using an isopycnic ocean model. Idealized oceanic currents and wind fields derived from observational data acquired during Hurricane Katrina ...

Benjamin Jaimes; Lynn K. Shay; George R. Halliwell

2011-10-01T23:59:59.000Z

479

An Analysis of the Conditional Instability of the Tropical Atmosphere  

Science Conference Proceedings (OSTI)

The ice phase is included in thermodynamic calculations of convective available potential energy (CAPE) for a large number of soundings in the tropical atmosphere, at both land and ocean stations. It is found that the positive-buoyancy ...

Erle Williams; Nilton Renno

1993-01-01T23:59:59.000Z

480

Tropical Tropospheric-Only Responses to Absorbing Aerosols  

Science Conference Proceedings (OSTI)

Absorbing aerosols affect the earth’s climate through direct radiative heating of the troposphere. This study analyzes the tropical tropospheric-only response to a globally uniform increase in black carbon, simulated with an atmospheric general ...

Geeta G. Persad; Yi Ming; V. Ramaswamy

2012-04-01T23:59:59.000Z

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481

Convective Momentum Transport over the Tropical Pacific: Budget Estimates  

Science Conference Proceedings (OSTI)

ECMWF and NCEP–NCAR reanalyses are used to calculate convective momentum transport (CMT) as a momentum budget residual over several tropical oceanic convective regions, including the TOGA COARE Intensive Flux Array (IFA). Sources of uncertainty ...

Matthew T. Carr; Christopher S. Bretherton

2001-07-01T23:59:59.000Z

482

Tropical Cyclone Motion. A Comparison of Theory and Observation  

Science Conference Proceedings (OSTI)

The analytic predictions of tropical cyclone motion by Holland are shown to be in very good agreement with observations in the Australian southwest Pacific region. These results indicate that a combined linear asymmetric advection and divergence ...

Greg J. Holland

1984-01-01T23:59:59.000Z

483

Observational Undersampling in Tropical Cyclones and Implications for Estimated Intensity  

Science Conference Proceedings (OSTI)

The maximum surface wind speed is an important parameter for tropical cyclone operational analysis and forecasting, since it defines the intensity of a cyclone. Operational forecast centers typically refer the wind speed to a maximum 1- or 10-min ...

Eric W. Uhlhorn; David S. Nolan

2012-03-01T23:59:59.000Z

484

Monsoonal Interactions Leading to Sudden Tropical Cyclone Track Changes  

Science Conference Proceedings (OSTI)

Sudden poleward track changes of tropical cyclones embedded in monsoon gyres in the western North Pacific are documented. During these track changes, which are generally not well forecast, the cyclones are often accompanied by a separate comma-...

Lester E. Carr III; Russell L. Elsberry

1995-02-01T23:59:59.000Z

485

Propagating and Standing Components of the Intraseasonal Oscillationin Tropical Convection  

Science Conference Proceedings (OSTI)

Two questions related to the intraseasonal variability of tropical convection and circulation remain controversial. 1) To what degree is the convective component of the Madden–Julian oscillation (MJO) a standing oscillation? 2) Is the eastward ...

Chidong Zhang; Harry H. Hendon

1997-03-01T23:59:59.000Z

486

A Pilot Research Moored Array in the Tropical Atlantic (PIRATA)  

Science Conference Proceedings (OSTI)

The tropical Atlantic Ocean is characterized by a large seasonal cycle around which there are climatically significant interannual and decadal timescale variations. The most pronounced of these interannual variations are equatorial warm events, ...

Jacques Servain; Antonio J. Busalacchi; Michael J. McPhaden; Antonio D. Moura; Gilles Reverdin; Marcio Vianna; Stephen E. Zebiak

1998-10-01T23:59:59.000Z

487

Interior Communication from the Subtropical to the Tropical Oceans  

Science Conference Proceedings (OSTI)

The communication from the subtropical gyre interior to the Tropics is examined using wind stress datasets and results from an ocean data assimilation system. It is shown that the interior communication can be clarified by a simple interior mass ...

Rui Xin Huang; Qi Wang

2001-12-01T23:59:59.000Z

488

Momentum Flux by Lines of Cumulonimbus over the Tropical Oceans  

Science Conference Proceedings (OSTI)

Examination of aircraft and rawinsonde data gathered in nine tropical mesoscale convective line cases indicates that all but two lines systematically increased front-to-rear momentum at heights greater than about 4 km, and rear-to-front momentum ...

Margaret A. LeMone; Gary M. Barnes; Edward J. Zipser

1984-06-01T23:59:59.000Z

489

An Assessment Of Atmospheric Water Budget Components Over Tropical Oceans  

Science Conference Proceedings (OSTI)

Balancing global moisture budgets is a difficult task that is even more challenging at regional scales. Atmospheric water budgets components are investigated within five tropical (15°S, 15°N) ocean regions, including the Indian Ocean, three ...

Paula J. Brown; Christian D. Kummerow

490

Tropical Cyclone Tracking Using a Neighbor Enclosed Area Tracking Algorithm  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) tracking is essential for calculating TC statistics from gridded datasets. A new method for TC tracking is presented here using neighbor enclosed area tracking (NEAT), which is based on the temporal overlap of enclosed areas ...

Yuya Satake; Masaru Inatsu; Masato Mori; Akira Hasegawa

2013-10-01T23:59:59.000Z

491

Tropical Storm Development and Decay: Sensitivity to Surface Boundary Conditions  

Science Conference Proceedings (OSTI)

Hurricane models have rarely been used to investigate the observational fact that tropical disturbances seldom form, develop, or intensify over land. Furthermore, rather ad hoc assumptions have been made when modeling landfall. The general ...

Robert E. Tuleya

1994-02-01T23:59:59.000Z

492

El Niño and Tropical Pacific Ocean Surface Temperatures  

Science Conference Proceedings (OSTI)

The spatial and temporal character of El Niño is explored with analyses of tropical Pacific Ocean surface temperatures for the period 1957–76. The data are derived from approximately 5×106 marine weather reports. Maps are illustrated which ...

Bryan C. Weare

1982-01-01T23:59:59.000Z

493

Probabilistic Prediction of Tropical Cyclones. Part II: Intensity  

Science Conference Proceedings (OSTI)

A new objective aid for operational probabilistic intensity (defined as maximum wind speed) prediction of tropical cyclones is presented. Based on statistical analyses of the performance of all operationally available numerical models (using ...

Harry C. Weber

2005-07-01T23:59:59.000Z

494

Probabilistic Prediction of Tropical Cyclones. Part I: Position  

Science Conference Proceedings (OSTI)

A new objective aid for operational prediction of the positions of tropical cyclones is presented. Its method is based on a simple analysis of the performance of all operationally available numerical models during a training period. In a ...

Harry C. Weber

2005-07-01T23:59:59.000Z

495

Origin of Lapse Rate Changes in the Upper Tropical Troposphere  

Science Conference Proceedings (OSTI)

Vertical motions in clouds arise from a variety of thermodynamic processes, including latent heat release, evaporative cooling, melting, and cloud radiative heating. In the Tropics, the net upward vertical mass flux from convective systems should ...

Ian Folkins

2002-03-01T23:59:59.000Z

496

Topographic Effects on the Tropical Land and Sea Breeze  

Science Conference Proceedings (OSTI)

The effect of an inland plateau on the tropical sea breeze is considered in terms of idealized numerical experiments, with a particular emphasis on offshore effects. The sea breeze is modeled as the response to an oscillating interior heat source ...

Tingting Qian; Craig C. Epifanio; Fuqing Zhang

2012-01-01T23:59:59.000Z

497

CISK or WISHE as the Mechanism for Tropical Cyclone Intensification  

Science Conference Proceedings (OSTI)

Examination of conditional instability of the second kind (CISK) and wind-induced surface heat exchange (WISHE), two proposed mechanisms for tropical cyclone and polar low intensification, suggests that the sensitivity of the intensification rate ...

George C. Craig; Suzanne L. Gray

1996-12-01T23:59:59.000Z

498

The Mesoscale Dynamics of Thin Tropical Tropopause Cirrus  

Science Conference Proceedings (OSTI)

Thin cirrus clouds in the tropical tropopause layer (TTL) are warmed through the absorption of infrared radiation. The response of the cloud and the surrounding atmosphere to this thermal forcing is investigated through linear theory and ...

Dale R. Durran; Tra Dinh; Marie Ammerman; Thomas Ackerman

2009-09-01T23:59:59.000Z

499

Temperature Fields in the Tropical Tropopause Transition Layer  

Science Conference Proceedings (OSTI)

There has been increasing recognition of the role of the tropical tropopause layer (TTL) in determining stratospheric water vapor concentrations—the TTL being a layer of transition between air showing tropospheric properties below and ...

Xue Long Zhou; Marvin A. Geller; Minghua Zhang

2004-08-01T23:59:59.000Z

500

The Relationship of Highly Reflective Clouds to Tropical Climate Anomalies  

Science Conference Proceedings (OSTI)

The interannual variability of tropical convection related to the Southern Oscillation (SO) and regional climate anomalies is studied from satellite-derived estimates of highly reflective clouds (HRC) during 1971–87. The novel HRC data bank ...

Stefan Hastenrath

1990-03-01T23:59:59.000Z