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Note: This page contains sample records for the topic "tropical forest conversion" 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.


1

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

2

NPP Tropical Forest: Pasoh, Malaysia  

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

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

3

NPP Tropical Forest: Darien, Panama  

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

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

4

NPP Tropical Forest: Atherton, Australia  

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

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

5

NPP Tropical Forest: Chamela, Mexico  

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

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

6

NPP Tropical Forest: Kade, Ghana  

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

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

7

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)

8

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":""}]}

9

NPP Tropical Forest: La Selva, Costa Rica  

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

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...

10

NPP Tropical Forest: Barro Colorado, Panama  

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

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...

11

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":""}]}

12

NPP Tropical Forest: Luquillo, Puerto Rico  

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

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

13

NPP Tropical Forest: Manaus, Brazil [Amazonas]  

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

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

14

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...

15

NPP Tropical Forest: Khao Chong, Thailand  

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

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

16

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

17

NPP Tropical Forest: Magdalena Valley, Colombia  

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

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

18

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...

19

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...

20

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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

22

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

23

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

24

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

25

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

26

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

27

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

28

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.

29

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...

30

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

31

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

32

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 9:555572Luquillo Mountains of Puerto Rico. Biotro- pica 23:324335

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

2010-01-01T23:59:59.000Z

33

Contributions of Barotropic Energy Conversion to Northwest Pacific Tropical Cyclone Activity during ENSO  

Science Conference Proceedings (OSTI)

The contribution of barotropic energy conversion to tropical cyclone (TC) activity over the western North Pacific (WNP) during warm and cold phases of El NioSouthern Oscillation (ENSO) is investigated by separating TC vortices from reanalysis ...

Yao Ha; Zhong Zhong; Yimin Zhu; Yijia Hu

2013-04-01T23:59:59.000Z

34

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

35

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

36

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

37

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

38

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

39

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

40

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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

42

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

43

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, Sao Carlos, Brazil. Oliveira, R. , et al. (

2009-01-01T23:59:59.000Z

44

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

45

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

46

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

47

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 Dvila; Hirma Ramrez; Giorgio Tonella; Miguel F. Acevedo

2007-05-01T23:59:59.000Z

48

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

49

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

50

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

51

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

52

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

53

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 23:38692.hillslope Tabonuco forest, Puerto Rico. Biogeochemistry 46:

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

2009-01-01T23:59:59.000Z

54

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

55

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

56

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

57

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

58

VegetationClimate Feedbacks in the Conversion of Tropical Savanna to Grassland  

Science Conference Proceedings (OSTI)

Tropical savannas have been heavily impacted by human activity, with large expanses transformed from a mixture of trees and grasses to open grassland and agriculture. The National Center for Atmospheric Research (NCAR) CCM3 general circulation ...

William A. Hoffmann; Robert B. Jackson

2000-05-01T23:59:59.000Z

59

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

60

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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

62

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

63

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

64

Conversion of forest residues to a methane-rich gas. Phase completion report  

DOE Green Energy (OSTI)

This report describes the progress made to investigate the use of various catalysts and methods of incorporation for the gasification of forest residue materials. Catalyst effectiveness was determined by measuring the gasification rate directly in a differential reactor that utilized approximately one gram samples and by gasifying approximately 10 to 20 gram samples in a batch-solids fluid bed (BSFB) to determine the effect of catalysts on product gas composition. 2 refs., 24 figs., 12 tabs.

Not Available

1986-03-01T23:59:59.000Z

65

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

66

Conversion of forest residues to a methane-rich gas: Interim Report  

DOE Green Energy (OSTI)

A process is being developed that produces a fuel gas with a heating value of 500 Btu/SCF from diverse forms of biomass, including shredded bark, wood chips, and sawdust. The system uses a high throughput, non-oxygen gasifier that employs sand circulation to supply process heat. Results obtained with a 10-inch I.D. gasifier are presented and compared with those in a 6-inch I.D. reactor. Feed rates up to 12 tons/day (dry) have been achieved corresponding to a specific wood throughput of 2000 lbs/ft/sup 2/-hr. Gas compositions in the two reactors are in excellent agreement and performance in the larger reactor, as measured by carbon conversion, is significantly improved. Cost projections comparing this process with direct combustion are presented that indicate gasification technology should have very significant cost advantages for both generation of plant steam and cogeneration of electricity. 5 refs., 14 figs., 5 tabs.

Feldmann, H.G.; Paisley, M.A.; Appelbaum, H.R.

1986-03-01T23:59:59.000Z

67

Parameterization of Canopy Structure and Leaf-Level Gas Exchange for an Eastern Amazonian Tropical Rain Forest (Tapajs National Forest, Par, 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

68

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

69

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

70

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

71

Dispersion Parameters over Forested Terrain  

Science Conference Proceedings (OSTI)

A unique set of micrometeorological data was obtained during a 196770 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

72

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

73

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."

74

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

75

Moving from Status to Trends: Forest Inventory and Analysis Symposium 2012 396GTR-NRS-P-105 FIA'S VOLUME-TO-BIOMASS CONVERSION METHOD (CRM)  

E-Print Network (OSTI)

'S VOLUME-TO-BIOMASS CONVERSION METHOD (CRM) GENERALLY UNDERESTIMATES BIOMASS IN COMPARISON TO PUBLISHED. (2003) biomass estimation equations for North American tree species resulted in 35 generalized equations developed from published equations. These 35 equations, which predict aboveground biomass of individual

76

Measuring Woody Encroachment along a ForestSavanna 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 forestsavanna boundary. The authors conducted a long-term (19862006) ...

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

2009-08-01T23:59:59.000Z

77

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

78

Unit Conversion  

Science Conference Proceedings (OSTI)

Unit Conversion. ... Unit Conversion Example. "If you have an amount of unit of A, how much is that in unit B?"; Dimensional Analysis; ...

2012-12-04T23:59:59.000Z

79

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...

80

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...

Note: This page contains sample records for the topic "tropical forest conversion" 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

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)

82

Ocean Thermal Energy Conversion Basics | Department of Energy  

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

Thermal Energy Conversion Basics Thermal Energy Conversion Basics Ocean Thermal Energy Conversion Basics August 16, 2013 - 4:22pm Addthis A process called ocean thermal energy conversion (OTEC) uses the heat energy stored in the Earth's oceans to generate electricity. OTEC works best when the temperature difference between the warmer, top layer of the ocean and the colder, deep ocean water is about 36°F (20°C). These conditions exist in tropical coastal areas, roughly between the Tropic of Capricorn and the Tropic of Cancer. To bring the cold water to the surface, ocean thermal energy conversion plants require an expensive, large-diameter intake pipe, which is submerged a mile or more into the ocean's depths. Some energy experts believe that if ocean thermal energy conversion can become cost-competitive with conventional power technologies, it could be

83

Ocean Thermal Energy Conversion Basics | Department of Energy  

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

Thermal Energy Conversion Basics Thermal Energy Conversion Basics Ocean Thermal Energy Conversion Basics August 16, 2013 - 4:22pm Addthis A process called ocean thermal energy conversion (OTEC) uses the heat energy stored in the Earth's oceans to generate electricity. OTEC works best when the temperature difference between the warmer, top layer of the ocean and the colder, deep ocean water is about 36°F (20°C). These conditions exist in tropical coastal areas, roughly between the Tropic of Capricorn and the Tropic of Cancer. To bring the cold water to the surface, ocean thermal energy conversion plants require an expensive, large-diameter intake pipe, which is submerged a mile or more into the ocean's depths. Some energy experts believe that if ocean thermal energy conversion can become cost-competitive with conventional power technologies, it could be

84

Conversion Factor  

Gasoline and Diesel Fuel Update (EIA)

Conversion Factor (Btu per cubic foot) Production Marketed... 1,110 1,106 1,105 1,106 1,109 Extraction Loss ......

85

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

86

Conversion Tables  

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

Carbon Dioxide Information Analysis Center - Conversion Tables Carbon Dioxide Information Analysis Center - Conversion Tables Contents taken from Glossary: Carbon Dioxide and Climate, 1990. ORNL/CDIAC-39, Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee. Third Edition. Edited by: Fred O'Hara Jr. 1 - International System of Units (SI) Prefixes 2 - Useful Quantities in CO2 3 - Common Conversion Factors 4 - Common Energy Unit Conversion Factors 5 - Geologic Time Scales 6 - Factors and Units for Calculating Annual CO2 Emissions Using Global Fuel Production Data Table 1. International System of Units (SI) Prefixes Prefix SI Symbol Multiplication Factor exa E 1018 peta P 1015 tera T 1012 giga G 109 mega M 106 kilo k 103 hecto h 102 deka da 10 deci d 10-1 centi c 10-2

87

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 900200-hPa wind shear was ...

Christopher A. Davis; Lance F. Bosart

2003-11-01T23:59:59.000Z

88

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

89

Precious Metals Conversion Information  

Science Conference Proceedings (OSTI)

Precious Metals Conversion Information. The Office of Weights and Measures (OWM) has prepared a Conversion Factors ...

2012-11-21T23:59:59.000Z

90

Surface Soil Changes Following Selective Logging in an Eastern Amazon Forest  

Science Conference Proceedings (OSTI)

In the Brazilian Amazon, selective logging is second only to forest conversion in its extent. Conversion to pasture or agriculture tends to reduce soil nutrients and site productivity over time unless fertilizers are added. Logging removes ...

Lydia P. Olander; Mercedes M. Bustamante; Gregory P. Asner; Everaldo Telles; Zayra Prado; Plnio B. Camargo

2005-04-01T23:59:59.000Z

91

The Tropical Water and Energy Cycles in a Cumulus Ensemble Model. Part I: Equilibrium Climate  

Science Conference Proceedings (OSTI)

A cumulus ensemble model is used to study the tropical water and energy cycles and their role in the climate system. The model includes cloud dynamics, radiative processes, and microphysics that incorporate all important production and conversion ...

C. H. Sui; K. M. Lau; W. K. Tao; J. Simpson

1994-03-01T23:59:59.000Z

92

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,...

93

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

94

Ocean thermal energy conversion plants : experimental and analytical study of mixing and recirculation  

E-Print Network (OSTI)

Ocean thermal energy conversion (OTEC) is a method of generating power using the vertical temperature gradient of the tropical ocean as an energy source. Experimental and analytical studies have been carried out to determine ...

Jirka, Gerhard H.

95

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

96

Context: Destruction/Conversion  

Science Conference Proceedings (OSTI)

*. Bookmark and Share. Context: Destruction/Conversion. ... Process for Conversion of Halon 1211.. Tran, R.; Kennedy, EM; Dlugogorski, BZ; 2000. ...

2011-11-17T23:59:59.000Z

97

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

98

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

99

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

100

Northern Hemisphere Biome-and Process-Specific Changes in Forest Area and  

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

Northern Hemisphere Biome-and Process-Specific Changes in Forest Area and Northern Hemisphere Biome-and Process-Specific Changes in Forest Area and Gross Merchantable Volume: 1890-1990 (DB1017) data Data DOI: 10.3334/CDIAC/lue.db1017 Contributors A. N. D. Auclair, J. A. Bedford, and C. Revenga Description This database lists annual changes in areal extent (Ha) and gross merchantable wood volume (m3) produced by depletion and accrual processes in boreal and temperate forests in Alaska, Canada, Europe, Former Soviet Union, Non-Soviet temperate Asia, and the contiguous United States for the years 1890 through 1990. Forest depletions (source terms for atmospheric CO2) are identified as forest pests, forest dieback, forest fires, forest harvest, and land-use changes (predominantly the conversion of forest, temperate woodland, and shrubland to cropland). Forest accruals (sink terms

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

102

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

103

QUANTUM CONVERSION IN PHOTOSYNTHESIS  

E-Print Network (OSTI)

W _7405-eng- 4B QUANTUM CONVERSION IN PHOTOSYNTHESIS Melvint r UCRL-9 533 QUANrUM CONVERSION IN PHWOSYNTHESIS * Melvinitself. The primary quantum conversion act is an ionization

Calvin, Melvin

2008-01-01T23:59:59.000Z

104

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

105

Produced Conversion Coatings  

Science Conference Proceedings (OSTI)

Chemical conversion coatings are commonly applied to Mg alloys as paint bases and in some cases as stand-alone protection. Traditional conversion coatings...

106

Library Conversion Tool  

Science Conference Proceedings (OSTI)

Library Conversion Tool. ... The LIB2NIST mass spectral data conversion program consists of the following files (which are contained in a ZIP archive): ...

2013-06-24T23:59:59.000Z

107

Conversion of Legacy Data  

Science Conference Proceedings (OSTI)

... Conversion of Legacy Data. Conversion of legacy data can be one of the most difficult and challenging components in an SGML environment. ...

108

Biofuel Conversion Process  

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

The conversion of biomass solids into liquid or gaseous biofuels is a complex process. Today, the most common conversion processes are biochemical- and thermochemical-based. However, researchers...

109

Conversion Plan | Department of Energy  

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

Conversion Plan Conversion Plan This template is used to document the conversion plan that clearly defines the system or project's conversion procedures; outlines the installation...

110

Modelling interactions of carbon dioxide, forests, and climate  

SciTech Connect

Atmospheric carbon dioxide is rising and forests and climate is changing! This combination of fact and premise may be evaluated at a range of temporal and spatial scales with the aid of computer simulators describing the interrelationships between forest vegetation, litter and soil characteristics, and appropriate meteorological variables. Some insights on the effects of climate on the transfers of carbon and the converse effect of carbon transfer on climate are discussed as a basis for assessing the significance of feedbacks between vegetation and climate under conditions of rising atmospheric carbon dioxide. Three main classes of forest models are reviewed. These are physiologically-based models, forest succession simulators based on the JABOWA model, and ecosystem-carbon budget models that use compartment transfer rates with empirically estimated coefficients. Some regression modeling approaches are also outlined. Energy budget models applied to forests and grasslands are also reviewed. This review presents examples of forest models; a comprehensive discussion of all available models is not undertaken.

Luxmoore, R.J. [Oak Ridge National Lab., TN (United States); Baldocchi, D.D. [National Oceanic and Atmospheric Administration, Oak Ridge, TN (United States)

1994-09-01T23:59:59.000Z

111

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

112

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

113

Tropical Cyclone Eye Thermodynamics  

Science Conference Proceedings (OSTI)

In intense tropical cyclones, sea level pressures at the center are 50100 hPa lower than outside the vortex, but only 1030 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

114

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

115

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

116

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

117

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...

118

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

119

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

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

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...

120

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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

122

Conversion Between Implicit - CECM  

E-Print Network (OSTI)

Conversion Between Implicit and Parametric Representation of Differential Varieties. Xiao-Shan Gao, Institute of Systems Science, Chinese Academy of...

123

Ocean Thermal Energy Conversion  

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

A process called ocean thermal energy conversion (OTEC) uses the heat energy stored in the Earth's oceans to generate electricity.

124

Changes in the Enzymatic Hydrolysis Rate of Avicel Cellulose With Conversion  

E-Print Network (OSTI)

2009, p. 25). Bioethanol and biodiesel are the dominant types of biofuel for transport (UNEP 2009, p) savings of biofuels compared to fossil fuels. This mainly depends on the feedstock and conversion 6 Crop Environmental Impacts Palm Oil · Forest conversion and species loss · Fire damage to natural

California at Riverside, University of

125

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

126

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

127

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

128

Energy Basics: Biofuel Conversion Processes  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Biodiesel Biofuel Conversion Processes Biopower Bio-Based Products Biomass Resources Geothermal Hydrogen Hydropower Ocean Solar Wind Biofuel Conversion Processes The conversion of...

129

Beneficial Conversion Features or Contingently Adjustable Conversion  

E-Print Network (OSTI)

1. An entity may issue convertible debt with an embedded conversion option that is required to be bifurcated under Statement 133 if all of the conditions in paragraph 12 of that Statement are met. An embedded conversion option that initially requires separate Copyright 2008, Financial Accounting Standards Board Not for redistribution Page 1accounting as a derivative under Statement 133 may subsequently no longer meet the conditions that would require separate accounting as a derivative. A reassessment of whether an embedded conversion option must be bifurcated under Statement 133 is required each reporting period. When an entity is no longer required to bifurcate a conversion option pursuant to Statement 133, there are differing views on how an entity should recognize that change.

Bifurcation Criteria; Fasb Statement No; Stock Purchase Warrants

2006-01-01T23:59:59.000Z

130

Iterated multidimensional wave conversion  

Science Conference Proceedings (OSTI)

Mode conversion can occur repeatedly in a two-dimensional cavity (e.g., the poloidal cross section of an axisymmetric tokamak). We report on two novel concepts that allow for a complete and global visualization of the ray evolution under iterated conversions. First, iterated conversion is discussed in terms of ray-induced maps from the two-dimensional conversion surface to itself (which can be visualized in terms of three-dimensional rooms). Second, the two-dimensional conversion surface is shown to possess a symplectic structure derived from Dirac constraints associated with the two dispersion surfaces of the interacting waves.

Brizard, A. J. [Dept. Physics, Saint Michael's College, Colchester, VT 05439 (United States); Tracy, E. R.; Johnston, D. [Dept. Physics, College of William and Mary, Williamsburg, VA 23187-8795 (United States); Kaufman, A. N. [LBNL and Physics Dept., UC Berkeley, Berkeley, CA 94720 (United States); Richardson, A. S. [T-5, LANL, Los Alamos, NM 87545 (United States); Zobin, N. [Dept. Mathematics, College of William and Mary, Williamsburg, VA 23187-8795 (United States)

2011-12-23T23:59:59.000Z

131

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

132

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

133

Polymeric and Conversion Coatings  

Science Conference Proceedings (OSTI)

Oct 19, 2011 ... Ongoing research reveals that the search for appropriate conversion ... of the coated alloy was ~ 250 mV more noble compared to bare alloy.

134

QUANTUM CONVERSION IN PHOTOSYNTHESIS  

E-Print Network (OSTI)

QUANTUM CONVERSION IN PHOTOSYNTHESIS Melvin Calvin Januaryas it occurs in modern photosynthesis can only take place inof the problem or photosynthesis, or any specific aspect of

Calvin, Melvin

2008-01-01T23:59:59.000Z

135

Catalytic conversion of biomass.  

E-Print Network (OSTI)

?? Catalytic processes for conversion of biomass to transportation fuels have gained an increasing attention in sustainable energy production. The biomass can be converted to (more)

Calleja Aguado, Raquel

2013-01-01T23:59:59.000Z

136

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

137

NUCLEAR CONVERSION APPARATUS  

DOE Patents (OSTI)

A nuclear conversion apparatus is described which comprises a body of neutron moderator, tubes extending therethrough, uranium in the tubes, a fluid- circulating system associated with the tubes, a thorium-containing fluid coolant in the system and tubes, and means for withdrawing the fluid from the system and replacing it in the system whereby thorium conversion products may be recovered.

Seaborg, G.T.

1960-09-13T23:59:59.000Z

138

Chemical Conversion Coating  

Science Conference Proceedings (OSTI)

Table 16   Applications of aluminum using chemical conversion coatings...doors 6063 Acrylic paint (b) Cans 3004 Sanitary lacquer Fencing 6061 None applied Chromate conversion coatings Aircraft fuselage skins 7075 clad with 7072 Zinc chromate primer Electronic chassis 6061-T4 None applied Cast missile bulkhead 356-T6 None applied Screen 5056 clad with 6253 Clear varnish...

139

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 Nio is well established, and suggests a tropical mechanism for the El NioSouthern 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

140

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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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.

142

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

143

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

144

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

145

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

146

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

147

ADEPT: Efficient Power Conversion  

SciTech Connect

ADEPT Project: In todays increasingly electrified world, power conversionthe process of converting electricity between different currents, voltage levels, and frequenciesforms a vital link between the electronic devices we use every day and the sources of power required to run them. The 14 projects that make up ARPA-Es ADEPT Project, short for Agile Delivery of Electrical Power Technology, are paving the way for more energy efficient power conversion and advancing the basic building blocks of power conversion: circuits, transistors, inductors, transformers, and capacitors.

None

2011-01-01T23:59:59.000Z

148

Direct energy conversion systems  

SciTech Connect

The potential importance of direct energy conversion to the long-term development of fusion power is discussed with stress on the possibility of alleviating waste heat problems. This is envisioned to be crucial for any central power station in the 21st century. Two approaches to direct conversion, i.e., direct collection and magnetic expansion, are reviewed. While other techniques may be possible, none have received sufficient study to allow evaluation. It is stressed that, due to the intimate connection between the type of fusion fuel, the confinement scheme, direct conversion, and the coupling technique, all four element must be optimized simultaneously for high overall efficiency.

Miley, G.H.

1978-01-01T23:59:59.000Z

149

Solar Thermal Conversion  

DOE Green Energy (OSTI)

The thermal conversion process of solar energy is based on well-known phenomena of heat transfer (Kreith 1976). In all thermal conversion processes, solar radiation is absorbed at the surface of a receiver, which contains or is in contact with flow passages through which a working fluid passes. As the receiver heats up, heat is transferred to the working fluid which may be air, water, oil, or a molten salt. The upper temperature that can be achieved in solar thermal conversion depends on the insolation, the degree to which the sunlight is concentrated, and the measures taken to reduce heat losses from the working fluid.

Kreith, F.; Meyer, R. T.

1982-11-01T23:59:59.000Z

150

Wave Energy Conversion Technology  

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

Wave Energy Conversion Technology Wave Energy Conversion Technology Speaker(s): Mirko Previsic Date: August 2, 2001 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Julie Osborn Scientists have been working on wave power conversion for the past twenty years, but recent advances in offshore and IT technologies have made it economically competitive. Sea Power & Associates is a Berkeley-based renewable energy technology company. We have developed patented technology to generate electricity from ocean wave energy using a system of concrete buoys and highly efficient hydraulic pumps. Our mission is to provide competitively priced, non-polluting, renewable energy for coastal regions worldwide. Mirko Previsic, founder and CEO, of Sea Power & Associates will discuss ocean wave power, existing technologies for its conversion into

151

DANISHBIOETHANOLCONCEPT Biomass conversion for  

E-Print Network (OSTI)

DANISHBIOETHANOLCONCEPT Biomass conversion for transportation fuel Concept developed at RIS? and DTU Anne Belinda Thomsen (RIS?) Birgitte K. Ahring (DTU) #12;DANISHBIOETHANOLCONCEPT Biomass: Biogas #12;DANISHBIOETHANOLCONCEPT Pre-treatment Step Biomass is macerated The biomass is cut in small

152

Solar Hydrogen Conversion Background  

E-Print Network (OSTI)

Solar Hydrogen Conversion Background: The photoelectrochemical production of hydrogen has drawn properties In order to develop better materials for solar energy applications, in-depth photoelectrochemical simulated solar irradiance. Hydrogen production experiments are conducted in a sealed aluminum cell

Raftery, Dan

153

Photovoltaic Cell Conversion Efficiency  

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

The conversion efficiency of a photovoltaic (PV) cell, or solar cell, is the percentage of the solar energy shining on a PV device that is converted into electrical energy, or electricity....

154

Structured luminescence conversion layer  

SciTech Connect

An apparatus device such as a light source is disclosed which has an OLED device and a structured luminescence conversion layer deposited on the substrate or transparent electrode of said OLED device and on the exterior of said OLED device. The structured luminescence conversion layer contains regions such as color-changing and non-color-changing regions with particular shapes arranged in a particular pattern.

Berben, Dirk; Antoniadis, Homer; Jermann, Frank; Krummacher, Benjamin Claus; Von Malm, Norwin; Zachau, Martin

2012-12-11T23:59:59.000Z

155

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.

156

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

157

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 cyclones intensity. An ...

Tang, Brian Hong-An

158

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 ventilationor the flux of ...

Tang, Brian

159

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

160

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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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 Glser

2013-05-01T23:59:59.000Z

162

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

163

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

164

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

165

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

166

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

167

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.

168

Mapping Land-Use Change and Monitoring the Impacts of Hardwood-to-Pine Conversion on the Southern Cumberland Plateau in Tennessee  

Science Conference Proceedings (OSTI)

Over the past two decades, forests in the southeastern United States have undergone dramatic changes as the result of urban sprawl and conversion to intensively managed pine plantations. The Cumberland Plateau, an important ecoregion in the ...

Deborah A. McGrath; Jonathan P. Evans; C. Ken Smith; David G. Haskell; Neil W. Pelkey; Robert R. Gottfried; Charles D. Brockett; Matthew D. Lane; E. Douglass Williams

2004-07-01T23:59:59.000Z

169

Digital optical conversion module  

DOE Patents (OSTI)

A digital optical conversion module used to convert an analog signal to a computer compatible digital signal including a voltage-to-frequency converter, frequency offset response circuitry, and an electrical-to-optical converter. Also used in conjunction with the digital optical conversion module is an optical link and an interface at the computer for converting the optical signal back to an electrical signal. Suitable for use in hostile environments having high levels of electromagnetic interference, the conversion module retains high resolution of the analog signal while eliminating the potential for errors due to noise and interference. The module can be used to link analog output scientific equipment such as an electrometer used with a mass spectrometer to a computer.

Kotter, Dale K. (North Shelley, ID); Rankin, Richard A. (Ammon, ID)

1991-02-26T23:59:59.000Z

170

Overview of coal conversion  

SciTech Connect

The structure of coal and the processes of coal gasification and coal liquefaction are reviewed. While coal conversion technology is not likely to provide a significant amount of synthetic fuel within the next several years, there is a clear interest both in government and private sectors in the development of this technology to hedge against ever-diminishing petroleum supplies, especially from foreign sources. It is evident from this rather cursory survey that there is some old technology that is highly reliable; new technology is being developed but is not ready for commercialization at the present state of development. The area of coal conversion is ripe for exploration both on the applied and basic research levels. A great deal more must be understood about the reactions of coal, the reactions of coal products, and the physics and chemistry involved in the various stages of coal conversion processes in order to make this technology economically viable.

Clark, B.R.

1981-03-27T23:59:59.000Z

171

Digital optical conversion module  

DOE Patents (OSTI)

A digital optical conversion module used to convert an analog signal to a computer compatible digital signal including a voltage-to-frequency converter, frequency offset response circuitry, and an electrical-to-optical converter. Also used in conjunction with the digital optical conversion module is an optical link and an interface at the computer for converting the optical signal back to an electrical signal. Suitable for use in hostile environments having high levels of electromagnetic interference, the conversion module retains high resolution of the analog signal while eliminating the potential for errors due to noise and interference. The module can be used to link analog output scientific equipment such as an electrometer used with a mass spectrometer to a computer. 2 figs.

Kotter, D.K.; Rankin, R.A.

1988-07-19T23:59:59.000Z

172

Direct conversion technology  

DOE Green Energy (OSTI)

The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct conversion systems that have potential application for energy conservation in the end-use sectors. This report contains progress of research on the Alkali Metal Thermal-to-Electric Converter (AMTEC) and on the Two-Phase Liquid-Metal MHD Electrical Generator (LMMHD) for the period January 1, 1991 through December 31, 1991. Research on AMTEC and on LMMHD was initiated during October 1987. Reports prepared on previous occasions (Refs. 1--5) contain descriptive and performance discussions of the following direct conversion concepts: thermoelectric, pyroelectric, thermionic, thermophotovoltaic, thermoacoustic, thermomagnetic, thermoelastic (Nitionol heat engine); and also, more complete descriptive discussions of AMTEC and LMMHD systems.

Massier, P.F.; Back, L.H.; Ryan, M.A.; Fabris, G.

1992-01-07T23:59:59.000Z

173

Power conversion technologies  

DOE Green Energy (OSTI)

The Power Conservation Technologies thrust area supports initiatives that enhance the core competencies of the Lawrence Livermore National Laboratory (LLNL) Engineering Directorate in the area of solid-state power electronics. Through partnerships with LLNL programs, projects focus on the development of enabling technologies for existing and emerging programs that have unique power conversion requirements. This year, a multi-disciplinary effort was supported which demonstrated solid-state, high voltage generation by using a dense, monolithic photovoltaic array. This effort builds upon Engineering's strengths in the core technology areas of power conversion, photonics, and microtechnologies.

Haigh, R E

1998-01-01T23:59:59.000Z

174

Direct Conversion Technology  

DOE Green Energy (OSTI)

The overall objective of the Direct Conversion Technology task is to develop an experimentally verified technology base for promising direct conversion systems that have potential application for energy conservation in the end-use sectors. Initially, two systems were selected for exploratory research and advanced development. These are Alkali Metal Thermal-to-Electric Converter (AMTEC) and Two-Phase Liquid Metal MD Generator (LMMHD). This report describes progress that has been made during the first six months of 1992 on research activities associated with these two systems. (GHH)

Back, L.H.; Fabris, G.; Ryan, M.A.

1992-07-01T23:59:59.000Z

175

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

cable contractors, tropical cyclones and geology. Dept. ofpressure center. Tropical cyclones are usually accompaniedor plankton. case of 'TROPICAL CYCLONE TUNICATES TURBIDITY

Sands, M. D.

2011-01-01T23:59:59.000Z

176

Energy Conversion, Storage, and Transport News  

Science Conference Proceedings (OSTI)

NIST Home > Energy Conversion, Storage, and Transport News. Energy Conversion, Storage, and Transport News. (showing ...

2010-10-26T23:59:59.000Z

177

Energy Conversion, Storage, and Transport Portal  

Science Conference Proceedings (OSTI)

NIST Home > Energy Conversion, Storage, and Transport Portal. Energy Conversion, Storage, and Transport Portal. Programs ...

2013-04-08T23:59:59.000Z

178

Links to on-line unit conversions  

Science Conference Proceedings (OSTI)

... Basic physical quantities. General unit, currency, and temperature conversion. ... Many conversions, including unusual and ancient units. ...

179

Model Energy Conversion Efficiency of Biological Systems  

Science Conference Proceedings (OSTI)

MML Researchers Model Energy Conversion Efficiency of Biological Systems. Novel, highly efficient energy conversion ...

2013-03-15T23:59:59.000Z

180

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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

182

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

183

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...

184

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

185

Photovoltaic Energy Conversion  

E-Print Network (OSTI)

Photovoltaic Energy Conversion Frank Zimmermann #12;Solar Electricity Generation Consumes no fuel Buy Solar Energy Stocks? Make Photovoltaics your Profession! #12;Challenges Make solar cells more and fossil fuel depletion problems! #12;Photovoltaics: Explosive Growth #12;Take Advantage of Solar Megatrend

Glashausser, Charles

186

ENERGY CONVERSION Spring 2011  

E-Print Network (OSTI)

in this course: Week 1: Review Week 2: Entropy and exergy Week 3: Power cycles, Otto and Diesel Week 4 resources including: wind, wave energy conversion devices, and fuel cell technologies Week12: Introduction will work in groups as assigned. Experiment: Diesel Engine Assessment: Projects 20% Lab Reports

Bahrami, Majid

187

Solar energy conversion.  

SciTech Connect

If solar energy is to become a practical alternative to fossil fuels, we must have efficient ways to convert photons into electricity, fuel, and heat. The need for better conversion technologies is a driving force behind many recent developments in biology, materials, and especially nanoscience. The Sun has the enormous untapped potential to supply our growing energy needs. The barrier to greater use of the solar resource is its high cost relative to the cost of fossil fuels, although the disparity will decrease with the rising prices of fossil fuels and the rising costs of mitigating their impact on the environment and climate. The cost of solar energy is directly related to the low conversion efficiency, the modest energy density of solar radiation, and the costly materials currently required. The development of materials and methods to improve solar energy conversion is primarily a scientific challenge: Breakthroughs in fundamental understanding ought to enable marked progress. There is plenty of room for improvement, since photovoltaic conversion efficiencies for inexpensive organic and dye-sensitized solar cells are currently about 10% or less, the conversion efficiency of photosynthesis is less than 1%, and the best solar thermal efficiency is 30%. The theoretical limits suggest that we can do much better. Solar conversion is a young science. Its major growth began in the 1970s, spurred by the oil crisis that highlighted the pervasive importance of energy to our personal, social, economic, and political lives. In contrast, fossil-fuel science has developed over more than 250 years, stimulated by the Industrial Revolution and the promise of abundant fossil fuels. The science of thermodynamics, for example, is intimately intertwined with the development of the steam engine. The Carnot cycle, the mechanical equivalent of heat, and entropy all played starring roles in the development of thermodynamics and the technology of heat engines. Solar-energy science faces an equally rich future, with nanoscience enabling the discovery of the guiding principles of photonic energy conversion and their use in the development of cost-competitive new technologies.

Crabtree, G. W.; Lewis, N. S. (Materials Science Division); (California Inst. of Tech.)

2008-03-01T23:59:59.000Z

188

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

189

Question detection in spoken conversations using textual conversations  

Science Conference Proceedings (OSTI)

We investigate the use of textual Internet conversations for detecting questions in spoken conversations. We compare the text-trained model with models trained on manually-labeled, domain-matched spoken utterances with and without prosodic features. ...

Anna Margolis; Mari Ostendorf

2011-06-01T23:59:59.000Z

190

Forest Grove Light and Power - Energy Efficiency Rebate Programs |  

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

Forest Grove Light and Power - Energy Efficiency Rebate Programs Forest Grove Light and Power - Energy Efficiency Rebate Programs Forest Grove Light and Power - Energy Efficiency Rebate Programs < Back Eligibility Commercial Industrial Residential Savings Category Home Weatherization Commercial Weatherization Appliances & Electronics Sealing Your Home Ventilation Heating & Cooling Commercial Heating & Cooling Heat Pumps Water Heating Windows, Doors, & Skylights Maximum Rebate Air Sealing: $400 Duct Sealing: $500 Program Info State Oregon Program Type Utility Rebate Program Rebate Amount Heat Pump with Central Ducts (Replacement): $300 - $1,000 Heat Pump with Central Ducts (Furnace Conversion): $1,400 - $1,900 Heat Pump with Ductless System: $1,500 Clothes Washer: $20 - $70 Refrigerator: $25 Freezer: $25 Electric Water Heater: $25

191

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; Frdric Achardz; Ruth Defries; Jonathan A. Foleyw; R. A. Houghton

2006-01-01T23:59:59.000Z

192

Wind energy conversion system  

DOE Patents (OSTI)

The wind energy conversion system includes a wind machine having a propeller connected to a generator of electric power, the propeller rotating the generator in response to force of an incident wind. The generator converts the power of the wind to electric power for use by an electric load. Circuitry for varying the duty factor of the generator output power is connected between the generator and the load to thereby alter a loading of the generator and the propeller by the electric load. Wind speed is sensed electro-optically to provide data of wind speed upwind of the propeller, to thereby permit tip speed ratio circuitry to operate the power control circuitry and thereby optimize the tip speed ratio by varying the loading of the propeller. Accordingly, the efficiency of the wind energy conversion system is maximized.

Longrigg, Paul (Golden, CO)

1987-01-01T23:59:59.000Z

193

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

194

Session: Energy Conversion  

DOE Green Energy (OSTI)

This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of five presentations: ''Hydrothermal Energy Conversion Technology'' by David Robertson and Raymond J. LaSala; ''Materials for Geothermal Production'' by Lawrence E. Kukacka; ''Supersaturated Turbine Expansions for Binary Geothermal Power Plants'' by Carl J. Bliem; ''Geothermal Waster Treatment Biotechnology: Progress and Advantages to the Utilities'' by Eugen T. Premuzic; and ''Geothermal Brine Chemistry Modeling Program'' by John H. Weare.

Robertson, David; LaSala, Raymond J.; Kukacka, Lawrence E.; Bliem, Carl J.; Premuzic, Eugene T.; Weare, John H.

1992-01-01T23:59:59.000Z

195

Natural gas conversion process  

Science Conference Proceedings (OSTI)

The experimental apparatus was dismantled and transferred to a laboratory space provided by Lawrence Berkeley Laboratory (LBL) which is already equipped with a high-ventilation fume hood. This will enable us to make tests at higher gas flow rates in a safe environment. Three papers presented at the ACS meeting in San Francisco (Symposium on Natural Gas Upgrading II) April 5--10, 1992 show that the goal of direct catalytic conversion of Methane into heavier Hydrocarbons in a reducing atmosphere is actively pursued in three other different laboratories. There are similarities in their general concept with our own approach, but the temperature range of the experiments reported in these recent papers is much lower and this leads to uneconomic conversion rates. This illustrates the advantages of Methane activation by a Hydrogen plasma to reach commercial conversion rates. A preliminary process flow diagram was established for the Integrated Process, which was outlined in the previous Quarterly Report. The flow diagram also includes all the required auxiliary facilities for product separation and recycle of the unconverted feed as well as for the preparation and compression of the Syngas by-product.

Not Available

1992-01-01T23:59:59.000Z

196

DUF6 Conversion Facility EISs  

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

Sign Me Up Search: OK Button DUF6 Guide DU Uses DUF6 Management and Uses DUF6 Conversion EIS Documents News FAQs Internet Resources Glossary Home Conversion Facility EISs...

197

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.

198

Conversion factors for energy equivalents  

Science Conference Proceedings (OSTI)

... Conversion factors for energy equivalents, For your convenience, you may convert energies online below. Or display factors as: ...

199

Energy Conversion/Fuel Cells  

Science Conference Proceedings (OSTI)

About this Symposium. Meeting, Materials Science & Technology 2011. Symposium, Energy Conversion/Fuel Cells. Sponsorship, MS&T Organization.

200

Conversion of Questionnaire Data  

SciTech Connect

During the survey, respondents are asked to provide qualitative answers (well, adequate, needs improvement) on how well material control and accountability (MC&A) functions are being performed. These responses can be used to develop failure probabilities for basic events performed during routine operation of the MC&A systems. The failure frequencies for individual events may be used to estimate total system effectiveness using a fault tree in a probabilistic risk analysis (PRA). Numeric risk values are required for the PRA fault tree calculations that are performed to evaluate system effectiveness. So, the performance ratings in the questionnaire must be converted to relative risk values for all of the basic MC&A tasks performed in the facility. If a specific material protection, control, and accountability (MPC&A) task is being performed at the 'perfect' level, the task is considered to have a near zero risk of failure. If the task is performed at a less than perfect level, the deficiency in performance represents some risk of failure for the event. As the degree of deficiency in performance increases, the risk of failure increases. If a task that should be performed is not being performed, that task is in a state of failure. The failure probabilities of all basic events contribute to the total system risk. Conversion of questionnaire MPC&A system performance data to numeric values is a separate function from the process of completing the questionnaire. When specific questions in the questionnaire are answered, the focus is on correctly assessing and reporting, in an adjectival manner, the actual performance of the related MC&A function. Prior to conversion, consideration should not be given to the numeric value that will be assigned during the conversion process. In the conversion process, adjectival responses to questions on system performance are quantified based on a log normal scale typically used in human error analysis (see A.D. Swain and H.E. Guttmann, 'Handbook of Human Reliability Analysis with Emphasis on Nuclear Power Plant Applications,' NUREG/CR-1278). This conversion produces the basic event risk of failure values required for the fault tree calculations. The fault tree is a deductive logic structure that corresponds to the operational nuclear MC&A system at a nuclear facility. The conventional Delphi process is a time-honored approach commonly used in the risk assessment field to extract numerical values for the failure rates of actions or activities when statistically significant data is absent.

Powell, Danny H [ORNL; Elwood Jr, Robert H [ORNL

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

202

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

Science Conference Proceedings (OSTI)

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

Yan Du; Lei Yang; Shang-Ping Xie

2011-01-01T23:59:59.000Z

203

Generalized Inversion of Tropical AtmosphereOcean 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 AtmosphereOcean array (TAO) measures the ...

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

1998-07-01T23:59:59.000Z

204

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

205

OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

Ocean Thermal Energy Conversion (OTEC) Draft Programmaticof ocean thermal energy conversion technology. U.S. Depart~on Ocean TherUial Energy Conversion, June 18, 1979. Ocean

Sands, M.Dale

2013-01-01T23:59:59.000Z

206

Semiconductor Nanowires and Nanotubes for Energy Conversion  

E-Print Network (OSTI)

notably energy conversion. As research continues in thisnanowires for energy conversion. Chemical Reviews, 2010.for solar energy conversion. Physical Review Letters, 2004.

Fardy, Melissa Anne

2010-01-01T23:59:59.000Z

207

: Package gov.nist.nlpir.irf.conversion  

Science Conference Proceedings (OSTI)

gov.nist.nlpir.irf.conversion Classes Ascii2HtmlConverter ConversionRule ConversionRules IrfConverter Sgml2AppDocConverter.

208

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.

209

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

210

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

211

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

212

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

213

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

214

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

215

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

216

Zinc phosphate conversion coatings  

DOE Patents (OSTI)

Zinc phosphate conversion coatings for producing metals which exhibit enhanced corrosion prevention characteristics are prepared by the addition of a transition-metal-compound promoter comprising a manganese, iron, cobalt, nickel, or copper compound and an electrolyte such as polyacrylic acid, polymethacrylic acid, polyitaconic acid and poly-L-glutamic acid to a phosphating solution. These coatings are further improved by the incorporation of Fe ions. Thermal treatment of zinc phosphate coatings to generate .alpha.-phase anhydrous zinc phosphate improves the corrosion prevention qualities of the resulting coated metal.

Sugama, Toshifumi (Wading River, NY)

1997-01-01T23:59:59.000Z

217

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

218

INTER-AMERICAN TROPICAL TUNA COMMISSION COMISIN INTERAMERICANA DEL ATN TROPICAL  

E-Print Network (OSTI)

INTER-AMERICAN TROPICAL TUNA COMMISSION COMISI?N INTERAMERICANA DEL AT?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

219

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...

220

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...

Note: This page contains sample records for the topic "tropical forest conversion" 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

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...

222

Adjustment of the Remote Tropical Climate to El Nio Conditions  

Science Conference Proceedings (OSTI)

The adjustment of the tropical climate outside the Pacific (the remote Tropics) to the abrupt onset of El Nio 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

223

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

224

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

225

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

226

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 AtmosphereOcean (TAO) buoy array and wind speeds from the European ...

Robert F. Contreras

2002-09-01T23:59:59.000Z

227

Observed Antarctic Interannual Climate Variability and Tropical Linkages  

Science Conference Proceedings (OSTI)

This study reviews the mechanisms associated with Antarctictropical 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

228

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

229

Energy conversion system  

DOE Patents (OSTI)

The energy conversion system includes a photo-voltaic array for receiving solar radiation and converting such radiation to electrical energy. The photo-voltaic array is mounted on a stretched membrane that is held by a frame. Tracking means for orienting the photo-voltaic array in predetermined positions that provide optimal exposure to solar radiation cooperate with the frame. An enclosure formed of a radiation transmissible material includes an inside containment space that accommodates the photo-voltaic array on the stretched membrane, the frame and the tracking means, and forms a protective shield for all such components. The enclosure is preferably formed of a flexible inflatable material and maintains its preferred form, such as a dome, under the influence of a low air pressure furnished to the dome. Under this arrangement the energy conversion system is streamlined for minimizing wind resistance, sufficiently weathproof for providing protection against weather hazards such as hail, capable of using diffused light, lightweight for low-cost construction and operational with a minimal power draw.

Murphy, L.M.

1985-09-16T23:59:59.000Z

230

Energy conversion system  

DOE Patents (OSTI)

The energy conversion system includes a photo-voltaic array for receiving solar radiation and converting such radiation to electrical energy. The photo-voltaic array is mounted on a stretched membrane that is held by a frame. Tracking means for orienting the photo-voltaic array in predetermined positions that provide optimal exposure to solar radiation cooperate with the frame. An enclosure formed of a radiation transmissible material includes an inside containment space that accommodates the photo-voltaic array on the stretched membrane, the frame and the tracking means, and forms a protective shield for all such components. The enclosure is preferably formed of a flexible inflatable material and maintains its preferred form, such as a dome, under the influence of a low air pressure furnished to the dome. Under this arrangement the energy conversion system is streamlined for minimizing wind resistance, sufficiently weatherproof for providing protection against weather hazards such as hail, capable of using diffused light, lightweight for low-cost construction, and operational with a minimal power draw.

Murphy, Lawrence M. (Lakewood, CO)

1987-01-01T23:59:59.000Z

231

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...

232

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

233

Basis of conversion factors for energy equivalents  

Science Conference Proceedings (OSTI)

... Basis of conversion factors for energy equivalents Conversion factors for energy equivalents are derived from the following relations: ...

234

Conversion factors for energy equivalents: All factors  

Science Conference Proceedings (OSTI)

... Conversion factors for energy equivalents Return to online conversions. Next page of energy equivalents. Definition of uncertainty ...

235

Catalytic Conversion of Bioethanol to Hydrocarbons ...  

Conventional biomass to hydrocarbon conversion is generally not commercially feasible, due to costs of the conversion process.

236

Power conversion technologies  

DOE Green Energy (OSTI)

The Power Conversion Technologies thrust area identifies and sponsors development activities that enhance the capabilities of engineering at Lawrence Livermore National Laboratory (LLNL) in the area of solid- state power electronics. Our primary objective is to be a resource to existing and emerging LLNL programs that require advanced solid-state power electronic technologies.. Our focus is on developing and integrating technologies that will significantly impact the capability, size, cost, and reliability of future power electronic systems. During FY-96, we concentrated our research efforts on the areas of (1) Micropower Impulse Radar (MIR); (2) novel solid-state opening switches; (3) advanced modulator technology for accelerators; (4) compact accelerators; and (5) compact pulse generators.

Newton, M. A.

1997-02-01T23:59:59.000Z

237

Quantum optical waveform conversion  

E-Print Network (OSTI)

Currently proposed architectures for long-distance quantum communication rely on networks of quantum processors connected by optical communications channels [1,2]. The key resource for such networks is the entanglement of matter-based quantum systems with quantum optical fields for information transmission. The optical interaction bandwidth of these material systems is a tiny fraction of that available for optical communication, and the temporal shape of the quantum optical output pulse is often poorly suited for long-distance transmission. Here we demonstrate that nonlinear mixing of a quantum light pulse with a spectrally tailored classical field can compress the quantum pulse by more than a factor of 100 and flexibly reshape its temporal waveform, while preserving all quantum properties, including entanglement. Waveform conversion can be used with heralded arrays of quantum light emitters to enable quantum communication at the full data rate of optical telecommunications.

Kielpinski, D; Wiseman, HM

2010-01-01T23:59:59.000Z

238

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 211 % by 2100. Existing modelling studies also consistently project decreases in the globally averaged frequency of tropical cyclones, by 634%. 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

239

Interannual Variation of the Tropical Easterly Jet  

Science Conference Proceedings (OSTI)

The 200-mb tropical wind fields analyzed at Florida State University for 196574 and the 200 and 700 mb tropical wind fields from the National Meteorological Center for 197982 were used to explore the mechanism for the interannual variation of ...

Tsing-Chang Chen; Harry van Loon

1987-08-01T23:59:59.000Z

240

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 ventilationor the flux of low-entropy air into the center of ...

Brian Tang; Kerry Emanuel

2012-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical forest conversion" 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

Advanced Coal Conversion Process Demonstration  

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

Clean Coal Technology Program Advanced Coal Conversion Process Demonstration A DOE Assessment DOENETL-20051217 U.S. Department of Energy Office of Fossil Energy National Energy...

242

Wideband Wavelength Conversion Using Cavity ...  

Science Conference Proceedings (OSTI)

... The researchers use the interaction of two ... bands that are frequently used in telecommunications. ... conversion should be possible using the same ...

2013-08-27T23:59:59.000Z

243

Energy Basics: Biofuel Conversion Processes  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

from the EERE Bioenergy Technologies Office. Thermochemical Conversion Processes Heat energy and chemical catalysts can be used to break down biomass into intermediate compounds...

244

Thermal Conversion Factor Source Documentation  

U.S. Energy Information Administration (EIA)

national annual quantity-weighted average conversion factors for conventional, reformulated, and oxygenated motor gasolines (see Table A3). The factor ...

245

PRIMARY QUANTUM CONVERSION IN PHOTOSYNTHESIS  

E-Print Network (OSTI)

Reactions in,Bacterial Photosynthesis. I, Nature of lightReactions in Bacterial Photosynthesis. 111. Reactions ofQUANTUM CONVERSION IN PHOTOSYNTHESIS Melvin Calvin and G. M.

Calvin, Melvin; Androes, G.M.

1962-01-01T23:59:59.000Z

246

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

247

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

248

Alternative Fuels Data Center: Conversion Regulations  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Conversion Regulations Conversion Regulations to someone by E-mail Share Alternative Fuels Data Center: Conversion Regulations on Facebook Tweet about Alternative Fuels Data Center: Conversion Regulations on Twitter Bookmark Alternative Fuels Data Center: Conversion Regulations on Google Bookmark Alternative Fuels Data Center: Conversion Regulations on Delicious Rank Alternative Fuels Data Center: Conversion Regulations on Digg Find More places to share Alternative Fuels Data Center: Conversion Regulations on AddThis.com... Conversion Regulations All vehicle and engine conversions must meet standards instituted by the U.S. Environmental Protection Agency (EPA), the National Highway Traffic Safety Administration (NHTSA), and state agencies like the California Air Resources Board (CARB).

249

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

250

MEDICAL IMAGE CONVERSION Peter Stanchev  

E-Print Network (OSTI)

MEDICAL IMAGE CONVERSION Peter Stanchev Institute of Mathematics, Bulgarian Academy of Sciences with the problem of converting medical images from one format to another. In solving it the structure of the most commonly used medical image formats are studied and analysed. A mechanism for medical image file conversion

Stanchev, Peter

251

Visualization components for persistent conversations  

Science Conference Proceedings (OSTI)

An appropriately designed interface to persistent, threaded conversations could reinforce socially beneficial behavior by prominently featuring how frequently and to what degree each user exhibits such behaviors. Based on the data generated by the Netscan ... Keywords: Usenet, asynchronous threaded discussions, newsgroup, persistent conversation, social cyberspaces, visualization

Marc A. Smith; Andrew T. Fiore

2001-03-01T23:59:59.000Z

252

Alcohol fuel conversion apparatus  

Science Conference Proceedings (OSTI)

This patent describes an alcohol fuel conversion apparatus for internal combustion engines comprising: fuel storage means for containing an alcohol fuel; primary heat exchange means in fluid communication with the fuel storage means for transferring heat to pressurized alcohol contained within the heat exchange means; a heat source for heating the primary heat exchange means; pressure relief valve means in closed fluid communication with the primary heat exchange means for releasing heated pressurized alcohol into an expansion chamber; converter means including the expansion chamber in fluid communication with the pressure relief valve means for receiving the heated pressurized alcohol and for the vaporization of the alcohol; fuel injection means in fluid communication with the converter means for injecting vaporized alcohol into the cylinders of an internal combustion engine for mixing with air within the cylinders for proper combustion; and pump means for pressurized pumping of alcohol from the 23 fuel storage means to the primary heat exchanger means, converter means, fuel injector means, and to the engine.

Carroll, B.I.

1987-12-08T23:59:59.000Z

253

NPP Boreal Forest: Jdras, Sweden  

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

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...

254

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

255

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

256

$?- e$ Conversion With Four Generations  

E-Print Network (OSTI)

We study $\\mu - e$ conversion with sequential four generations. A large mass for the fourth generation neutrino can enhance the conversion rate by orders of magnitude. We compare constraints obtained from $\\mu - e$ conversion using experimental bounds on various nuclei with those from $\\mu \\to e \\gamma$ and $\\mu \\to e\\bar e e$. We find that the current bound from $\\mu - e$ conversion with Au puts the most stringent constraint in this model. The relevant flavor changing parameter $\\lambda_{\\mu e} = V^*_{\\mu 4}V_{e4}^{}$ is constrained to be less than $1.6\\times 10^{-5}$ for the fourth generation neutrino mass larger than 100 GeV. Implications for future $\\mu -e$ conversion, $\\mu \\to e\\gamma$ and $\\mu \\to e\\bar e e$ experiments are discussed.

N. G. Deshpande; T. Enkhbat; T. Fukuyama; X. -G. He; L. -H. Tsai; K. Tsumura

2011-06-25T23:59:59.000Z

257

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...

258

Hydrothermal Energy Conversion Technology  

SciTech Connect

The goal of the Hydrothermal Program is to develop concepts which allow better utilization of geothermal energy to reduce the life-cycle cost of producing electricity from liquid-dominated, hydrothermal resources. Research in the program is currently ongoing in three areas: (1) Heat Cycle Research, which is looking at methods to increase binary plant efficiencies; (2) Materials Development, which is developing materials for use in geothermal associated environments; and (3) Advanced Brine Chemistry, with work taking place in both the brine chemistry modeling area and waste disposal area. The presentations during this session reviewed the accomplishments and activities taking place in the hydrothermal energy conversion program. Lawrence Kukacka, Brookhaven National Laboratory, discussed advancements being made to develop materials for use in geothermal applications. This research has identified a large number of potential materials for use in applications from pipe liners that inhibit scale buildup and reduce corrosion to elastomers for downhole use. Carl J. Bliem, Idaho National Engineering Laboratory, discussed preparations currently underway to conduct field investigations of the condensation behavior of supersaturated turbine expansions. The research will evaluate whether the projected 8% to 10% improvement in brine utilization can be realized by allowing these expansions. Eugene T. Premuzic, Brookhaven National Laboratory, discussed advancements being made using biotechnology for treatment of geothermal residual waste; the various process options were discussed in terms of biotreatment variables. A treatment scenario and potential disposal costs were presented. John H. Weare, University of California, San Diego, discussed the present capabilities of the brine chemistry model he has developed for geothermal applications and the information it can provide a user. This model is available to industry. The accomplishments from the research projects presented in this session have been many. It is hoped that these accomplishments can be integrated into industrial geothermal power plant sites to assist in realizing the goal of reducing the cost of energy produced from the geothermal resource.

Robertson, David W.; LaSala, Raymond J.

1992-03-24T23:59:59.000Z

259

Management and Uses Conversion Activities  

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

Conversion Conversion Depleted UF6 Conversion DOE is planning to build two depleted UF6 conversion facilities, and site-specific environmental impact statements (EISs) to evaluate project alternatives. The Final Plan for Conversion and the Programmatic EIS The eventual disposition of depleted UF6 remains the subject of considerable interest within the U.S. Congress, and among concerned citizens and other stakeholders. Congress stated its intentions in Public Law (P. L.) 105-204, signed by the President in July 1998. P. L. 105-204 required DOE to develop a plan to build two depleted UF6 conversion facilities, one each at Portsmouth, Ohio, and Paducah, Kentucky. DOE submitted the required plan, Final Plan for the Conversion of Depleted Uranium Hexafluoride, to Congress in July 1999. This document provided a discussion of DOE's technical approach and schedule to implement this project. Although much of the information provided in this report is still valid, a few aspects of this plan have changed since its publication.

260

Barn ConversionBarn Conversion DiscussionDiscussion  

E-Print Network (OSTI)

B.G.S.A.C Stats ·· 2500 square foot insulated pole barn2500 square foot insulated pole barn ·· concrete neededhouse the system needed ·· Is the conversion cost worthIs the conversion cost worth while when compared installedNo vapor barrier installed ·· Rains in barnRains in barn ·· Up to 75 gallons per dayUp to 75

Note: This page contains sample records for the topic "tropical forest conversion" 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

Thermal Conversion Process (TCP) Technology  

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

Changing World Technologies' Changing World Technologies' Thermal Conversion Process Commercial Demonstration Plant DOE/EA 1506 Weld County, Colorado December 2004 U.S. DEPARTMENT OF ENERGY GOLDEN FIELD OFFICE 1617 Cole Boulevard Golden, Colorado 80401 Thermal Conversion Process (TCP) Technology Commercial Demonstration - Weld County, CO TABLE OF CONTENTS Environmental Assessment Thermal Conversion Process (TCP) Technology Commercial Demonstration Project Weld County, Colorado SUMMARY............................................................................................................................. S-1 1.0 INTRODUCTION.........................................................................................................1-1 1.1. National Environmental Policy Act and Related Procedures...........................1-1

262

EPA Redesigns Conversion Certification Policies  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

EPA Redesigns EPA Redesigns Conversion Certification Policies At a recent meeting held in Washington, DC, officials from the U.S. Environmental Protection Agency (EPA) opened dialogue about proposed changes to its emission certification policies that affect alternative fuel vehicles (AFVs). "We are trying to accommo- date the Energy Policy Act (EPAct) and Executive Order requirements while trying to change enforce- ment policies and guidance with respect to conversions," said Rich Ackerman of EPA's Enforcement Office. The meeting, attended by representatives of more than 60 organizations, was held to discuss actions addressing AFV emission certification. Specifically, topics included * Conversion emissions perfor- mance data * Status of environmental laws pertaining to alternative fuel

263

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

264

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.

265

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

266

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

267

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

268

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 tropicalextratropical 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

269

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

270

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

271

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

272

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

273

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

274

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

275

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

276

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

277

Tropical Cyclone Lightning and Rapid Intensity Change  

Science Conference Proceedings (OSTI)

A large sample of Atlantic and eastern North Pacific tropical cyclone cases (200510) 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

278

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 NCEPNCAR reanalysis data. Zonal mean upwelling is calculated from momentum balance ...

William J. Randel; Rolando Garcia; Fei Wu

2008-11-01T23:59:59.000Z

279

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

280

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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

282

An Observational Analysis of Tropical Cyclone Recurvature  

Science Conference Proceedings (OSTI)

Data for 21 years (195777) 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

283

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

284

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

285

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 130-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

286

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 200406 Atlantic hurricane seasons. One of the cyclones has been ...

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

2008-05-01T23:59:59.000Z

287

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

288

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

289

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

290

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

291

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

292

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

293

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

294

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

295

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

296

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 OceanAtmosphere 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

297

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

298

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

299

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

300

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 oceanatmosphere 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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

302

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

303

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

304

Alternative Fuels Data Center: Vehicle Conversions  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Conversions Conversions Printable Version Share this resource Send a link to Alternative Fuels Data Center: Vehicle Conversions to someone by E-mail Share Alternative Fuels Data Center: Vehicle Conversions on Facebook Tweet about Alternative Fuels Data Center: Vehicle Conversions on Twitter Bookmark Alternative Fuels Data Center: Vehicle Conversions on Google Bookmark Alternative Fuels Data Center: Vehicle Conversions on Delicious Rank Alternative Fuels Data Center: Vehicle Conversions on Digg Find More places to share Alternative Fuels Data Center: Vehicle Conversions on AddThis.com... Vehicle Conversions Photo of converted to run on propane. What kinds of conversions are available? Natural Gas Propane Electric Hybrid Ethanol An aftermarket conversion is a vehicle or engine modified to operate using

305

Alternative Fuels Data Center: Propane Vehicle Conversions  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Conversions to someone by E-mail Conversions to someone by E-mail Share Alternative Fuels Data Center: Propane Vehicle Conversions on Facebook Tweet about Alternative Fuels Data Center: Propane Vehicle Conversions on Twitter Bookmark Alternative Fuels Data Center: Propane Vehicle Conversions on Google Bookmark Alternative Fuels Data Center: Propane Vehicle Conversions on Delicious Rank Alternative Fuels Data Center: Propane Vehicle Conversions on Digg Find More places to share Alternative Fuels Data Center: Propane Vehicle Conversions on AddThis.com... More in this section... Propane Basics Benefits & Considerations Stations Vehicles Availability Conversions Emissions Laws & Incentives Propane Vehicle Conversions Related Information Conversion Basics Regulations Vehicle conversions provide alternative fuel options beyond what is

306

OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

DOE-EPA Working Group on Ocean TherUial Energy Conversion,Sands, M.D. (editor) Ocean Thermal Energy Conversion (OTEC)r:he comnercialization of ocean thermal energy conversion

Sands, M.Dale

2013-01-01T23:59:59.000Z

307

Ocean Thermal Energy Conversion | Department of Energy  

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

Thermal Energy Conversion Ocean Thermal Energy Conversion August 16, 2013 - 4:22pm Addthis A process called ocean thermal energy conversion (OTEC) uses the heat energy stored in...

308

Tidal Conversion by Supercritical Topography  

E-Print Network (OSTI)

Calculations are presented of the rate of energy conversion of the barotropic tide into internal gravity waves above topography on the ocean floor. The ocean is treated as infinitely deep, and the topography consists of ...

Balmforth, Neil J.

309

Conversion to the Metric System  

U.S. Energy Information Administration (EIA)

Appendix C Conversion to the Metric System Public Law 100418, the Omnibus Trade and Competitiveness Act of 1988, states: It is the declared policy of the United ...

310

Tidal Conversion by Supercritical Topography  

Science Conference Proceedings (OSTI)

Calculations are presented of the rate of energy conversion of the barotropic tide into internal gravity waves above topography on the ocean floor. The ocean is treated as infinitely deep, and the topography consists of periodic obstructions; a ...

Neil J. Balmforth; Thomas Peacock

2009-08-01T23:59:59.000Z

311

Conversion coefficients for superheavy elements  

E-Print Network (OSTI)

In this paper we report on internal conversion coefficients for Z = 111 to Z = 126 superheavy elements obtained from relativistic Dirac-Fock (DF) calculations. The effect of the atomic vacancy created during the conversion process has been taken into account using the so called "Frozen Orbital" approximation. The selection of this atomic model is supported by our recent comparison of experimental and theoretical conversion coefficients across a wide range of nuclei. The atomic masses, valence shell electron configurations, and theoretical atomic binding energies required for the calculations were adopted from a critical evaluation of the published data. The new conversion coefficient data tables presented here cover all atomic shells, transition energies from 1 keV up to 6000 keV, and multipole orders of 1 to 5. A similar approach was used in our previous calculations [1] for Z = 5 - 110.

T. Kibdi; M. B. Trzhaskovskaya; M. Gupta; A. E. Stuchbery

2011-03-03T23:59:59.000Z

312

Cosmopolitanism - Conversation with Stuart Hall  

E-Print Network (OSTI)

Conversation between Stuart Hall and Pnina Werbner on the theme of Cosmopolitanism (to be shown at the Association of Social Anthropologists Silver Jubilee conference in 2006), in March 2006...

Hall, Stuart

2006-09-27T23:59:59.000Z

313

Unsupervised modeling of Twitter conversations  

Science Conference Proceedings (OSTI)

We propose the first unsupervised approach to the problem of modeling dialogue acts in an open domain. Trained on a corpus of noisy Twitter conversations, our method discovers dialogue acts by clustering raw utterances. Because it accounts for the sequential ...

Alan Ritter; Colin Cherry; Bill Dolan

2010-06-01T23:59:59.000Z

314

Biological conversion of synthesis gas  

DOE Green Energy (OSTI)

A continuous stirred tank reactor with and without sulfur recovery has been operated using Chlorobium thiosulfatophilum for the conversion of H[sub 2]S to elemental sulfur. In operating the reactor system with sulfur recovery, a gas retention time of 40 min was required to obtain a 100 percent conversion of H[sub 2]S to elemental sulfur. Essentially no SO[sub 4][sup 2[minus

Clausen, E.C.

1993-04-10T23:59:59.000Z

315

Fast Conversion Algorithms for Orthogonal Polynomials - Computer ...  

E-Print Network (OSTI)

Nov 13, 2008 ... a known conversion algorithm from an arbitrary orthogonal basis to the ... Fast algorithms, transposed algorithms, basis conversion, orthogonal.

316

Photocatalytic Conversion of Carbon Dioxide to Methanol.  

E-Print Network (OSTI)

??The photocatalytic conversion of carbon dioxide (CO2) to methanol was investigated. The procedure for the carbon dioxide conversion was carried out using a small scale (more)

Okpo, Emmanuel

2009-01-01T23:59:59.000Z

317

Vehicle Technologies Office: Solid State Energy Conversion  

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

Energy Conversion to someone by E-mail Share Vehicle Technologies Office: Solid State Energy Conversion on Facebook Tweet about Vehicle Technologies Office: Solid State Energy...

318

Vehicle Technologies Office: Solid State Energy Conversion  

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

Solid State Energy Conversion The Solid State Energy Conversion R&D activity is focused on developing advanced thermoelectric technologies for utilizing engine waste heat by...

319

Documents: Disposal of DUF6 Conversion Products  

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

DUF6 Conversion Products Search Documents: Search PDF Documents View a list of all documents Disposal of DUF6 Conversion Products PDF Icon Engineering Analysis for Disposal of...

320

Energy Basics: Ocean Thermal Energy Conversion  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Thermal Energy Conversion A process called ocean thermal energy conversion (OTEC) uses the heat energy stored in the Earth's oceans to generate electricity. OTEC works best when...

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

322

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

323

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

324

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

325

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...

326

Energy Conversion Photovoltaic, Concentrating Solar Power, and ...  

Science Conference Proceedings (OSTI)

About this Symposium. Meeting, Materials Science & Technology 2012. Symposium, Energy Conversion Photovoltaic, Concentrating Solar Power, and ...

327

Biochemical Conversion Pilot Plant (Fact Sheet)  

Science Conference Proceedings (OSTI)

This fact sheet provides information about Biochemical Conversion Pilot Plant capabilities and resources at NREL.

Not Available

2012-06-01T23:59:59.000Z

328

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...

329

Frequency Conversion of Entangled State  

E-Print Network (OSTI)

The quantum characteristics of sum-frequency process in an optical cavity with an input signal optical beam, which is a half of entangled optical beams, are analyzed. The calculated results show that the quantum properties of the signal beam can be maintained after its frequency is conversed during the intracavity nonlinear optical interaction. The frequency-conversed output signal beam is still in an entangled state with the retained other half of initial entangled beams. The resultant quantum correlation spectra and the parametric dependences of the correlations on the initial squeezing factor, the optical losses and the pump power of the sum-frequency cavity are calculated. The proposed system for the frequency conversion of entangled state can be used in quantum communication network and the calculated results can provide direct references for the design of experimental systems.

Aihong Tan; Xiaojun Jia; Changde Xie

2006-03-01T23:59:59.000Z

330

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

331

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

332

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

333

On the Origin of the Tropical Intraseasonal Oscillation  

Science Conference Proceedings (OSTI)

This study provides an explanation for the origin of the tropical intraseasonal (4050 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

334

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,

335

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 10C) precipitation radar (PR) ...

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

2005-07-01T23:59:59.000Z

336

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

337

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

338

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

339

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

340

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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

342

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

343

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

344

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

345

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

346

Comments on Reexamination of Tropical Cyclone WindPressure Relationship  

Science Conference Proceedings (OSTI)

In their study on the windpressure 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

347

Sensitivity of Tropical Tropospheric Temperature to Sea Surface Temperature Forcing  

Science Conference Proceedings (OSTI)

During El Nio, 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

348

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

349

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

350

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

351

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

352

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

353

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

354

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

355

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

356

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 Carri; Isaac Ginis; Joseph H. Golden

2012-07-01T23:59:59.000Z

357

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

358

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

359

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

360

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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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 atmosphericoceanic general circulation models (AOGCMs). Relationships ...

Jenni L. Evans; Jeffrey J. Waters

2012-11-01T23:59:59.000Z

362

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

363

Conversion of the Barotropic Tide  

Science Conference Proceedings (OSTI)

Using linear wave theory, the rate at which energy is converted into internal gravity waves by the interaction of the barotropic tide with topography in an ocean is calculated. Bell's formula for the conversion rate is extended to the case of an ...

Stefan G. Llewellyn Smith; W. R. Young

2002-05-01T23:59:59.000Z

364

Energy Conversion and Storage Program  

DOE Green Energy (OSTI)

The Energy Conversion and Storage Program applies chemistry and materials science principles to solve problems in (1) production of new synthetic fuels, (2) development of high-performance rechargeable batteries and fuel cells, (3) development of advanced thermochemical processes for energy conversion, (4) characterization of complex chemical processes, and (5) application of novel materials for energy conversion and transmission. Projects focus on transport-process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis. Electrochemistry research aims to develop advanced power systems for electric vehicle and stationary energy storage applications. Topics include identification of new electrochemical couples for advanced rechargeable batteries, improvements in battery and fuel-cell materials, and the establishment of engineering principles applicable to electrochemical energy storage and conversion. Chemical Applications research includes topics such as separations, catalysis, fuels, and chemical analyses. Included in this program area are projects to develop improved, energy-efficient methods for processing waste streams from synfuel plants and coal gasifiers. Other research projects seek to identify and characterize the constituents of liquid fuel-system streams and to devise energy-efficient means for their separation. Materials Applications research includes the evaluation of the properties of advanced materials, as well as the development of novel preparation techniques. For example, the use of advanced techniques, such as sputtering and laser ablation, are being used to produce high-temperature superconducting films.

Cairns, E.J.

1992-03-01T23:59:59.000Z

365

Alternative Fuels Data Center: Vehicle Conversion Basics  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Vehicle Conversion Vehicle Conversion Basics to someone by E-mail Share Alternative Fuels Data Center: Vehicle Conversion Basics on Facebook Tweet about Alternative Fuels Data Center: Vehicle Conversion Basics on Twitter Bookmark Alternative Fuels Data Center: Vehicle Conversion Basics on Google Bookmark Alternative Fuels Data Center: Vehicle Conversion Basics on Delicious Rank Alternative Fuels Data Center: Vehicle Conversion Basics on Digg Find More places to share Alternative Fuels Data Center: Vehicle Conversion Basics on AddThis.com... Vehicle Conversion Basics Photo of a Ford Transit Connect converted to run on compressed natural gas. A Ford Transit Connect converted to run on compressed natural gas. A converted vehicle or engine is one modified to use a different fuel or

366

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...

367

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

368

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

369

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

370

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

371

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

372

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

373

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

374

Tropical Cyclone Tornadoes, 19502007  

Science Conference Proceedings (OSTI)

An expanded climatology of U.S. tropical cyclone (TC) tornadoes covering the period 19502007 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

375

The Interannual Variability of Tropical Cyclones  

Science Conference Proceedings (OSTI)

This paper examines the interannual variability of tropical cyclones in each of the earths 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

376

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 30N30S amounts to 101 ...

Stefan Hastenrath

1980-02-01T23:59:59.000Z

377

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 Nio 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

378

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

379

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

380

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 SchRghuber; Hubert Sterba

2013-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical forest conversion" 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

The Implications of Tropical Rossby Waves for Tropical Tropopause Cirrus Formation and for the Equatorial Upwelling of the BrewerDobson 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

382

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

383

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

384

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

385

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

386

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

387

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

388

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

389

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

390

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

391

Biofuel Conversion Basics | Department of Energy  

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

Biofuel Conversion Basics Biofuel Conversion Basics Biofuel Conversion Basics August 14, 2013 - 12:31pm Addthis The conversion of biomass solids into liquid or gaseous biofuels is a complex process. Today, the most common conversion processes are biochemical- and thermochemical-based. However, researchers are also exploring photobiological conversion processes. Biochemical Conversion Processes In biochemical conversion processes, enzymes and microorganisms are used as biocatalysts to convert biomass or biomass-derived compounds into desirable products. Cellulase and hemicellulase enzymes break down the carbohydrate fractions of biomass to five- and six-carbon sugars in a process known as hydrolysis. Yeast and bacteria then ferment the sugars into products such as ethanol. Biotechnology advances are expected to lead to dramatic

392

DUF6 Conversion Facility EIS Schedule  

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

Depleted UF6 Conversion Facility EISs Schedule The final EISs for the DUF6 Conversion Facilities have been completed, and are available through this web site. The RODs are...

393

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

394

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

395

EFFECT OF DENTAL POLYMER DEGREE OF CONVERSION ...  

Science Conference Proceedings (OSTI)

Effect of Dental Polymer Degree of Conversion on Oral Biofilms. Alison Kraigsley, Sheng Lin-Gibson, Nancy J. Lin. National ...

396

Appendix B Metric and Thermal Conversion Tables  

U.S. Energy Information Administration (EIA)

2011 U.S. Energy Information Administration | Natural Gas Annual 193 Appendix B Metric and Thermal Conversion Tables

397

Conversion of Levulinic Acid to Methyl Tetrahydrofuran ...  

Search PNNL. PNNL Home; About; Research; Publications; Jobs; News; Contacts; Conversion of Levulinic Acid to Methyl Tetrahydrofuran. Battelle ...

398

Energy Storage, Transport, and Conversion in CNST  

Science Conference Proceedings (OSTI)

Energy Storage, Transport, and Conversion in CNST. Nanotribology ... Theory and Modeling of Materials for Renewable Energy. Nanostructures ...

2013-05-02T23:59:59.000Z

399

Conversion of Levulinic Acid to Methyl Tetrahydrofuran ...  

Biomass and Biofuels Conversion of Levulinic Acid to Methyl Tetrahydrofuran Pacific Northwest National Laboratory. Contact PNNL About This Technology ...

400

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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

402

CATALYTIC CONVERSION OF SOLVENT REFINED COAL TO LIQUID PRODUCTS  

E-Print Network (OSTI)

and Friedman, S. ,"Conversion of Anthraxylon - Kinetics ofiv- LBL 116807 CATALYTIC CONVERSION OF SOLVENT REFINED COALand Mechanisms of Coal Conversion to Clean Fuel,iI pre-

Tanner, K.I.

2010-01-01T23:59:59.000Z

403

STRIPPING OF PROCESS CONDENSATES FROM SOLID FUEL CONVERSION  

E-Print Network (OSTI)

Aqueous from Fossil Fuel Conversion Processes", ~l:;_J. _and Pollution Control in Coal Conversion Processes", U. s.By-Product Waters from Coal Conversion Processes", American

Hill, Joel David

2013-01-01T23:59:59.000Z

404

OCEAN THERMAL ENERGY CONVERSION: AN OVERALL ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

l OCEAN THERMAL ENERGY CONVERSION: ENVIRONMENTAL ASSESSMENTOcean Thermal Energy Conversion Draft Programmatic Environ-Ocean Thermal Energy Conversion. U.S. DOE Assistant Secre-

Sands, M.Dale

2013-01-01T23:59:59.000Z

405

OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS  

E-Print Network (OSTI)

Thermal Energy Conversion Conference. Ocean Systems Branch,Thermal Energy Conversion Conference. Ocean Systems Branch,thermal energy conversion, June 18, 1979. Ocean Systems

Sands, M. D.

2011-01-01T23:59:59.000Z

406

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

Nanoporous Thermal-to-Electrical Energy Conversion System (hand, the indirect energy conversion systems tend to beIn a direct energy conversion system, heat can be converted

Lim, Hyuck

2011-01-01T23:59:59.000Z

407

NREL-Ocean Energy Thermal Conversion | Open Energy Information  

Open Energy Info (EERE)

Ocean Energy Thermal Conversion Jump to: navigation, search Logo: NREL-Ocean Energy Thermal Conversion Name NREL-Ocean Energy Thermal Conversion AgencyCompany Organization...

408

OCEAN THERMAL ENERGY CONVERSION: AN OVERALL ENVIRONMENTAL ASSESSMENT  

E-Print Network (OSTI)

M.D. (editor). 1980. Ocean Thermal Energy Conversion Draft1980 :. i l OCEAN THERMAL ENERGY CONVERSION: ENVIRONMENTALDevelopment Plan. Ocean Thermal Energy Conversion. U.S. DOE

Sands, M.Dale

2013-01-01T23:59:59.000Z

409

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

410

High resolution A/D conversion based on piecewise conversion at lower resolution  

SciTech Connect

Piecewise conversion of an analog input signal is performed utilizing a plurality of relatively lower bit resolution A/D conversions. The results of this piecewise conversion are interpreted to achieve a relatively higher bit resolution A/D conversion without sampling frequency penalty.

Terwilliger, Steve (Albuquerque, NM)

2012-06-05T23:59:59.000Z

411

Integration of Feedstock Assembly System and Cellulosic Ethanol Conversion Models to Analyze Bioenergy System Performance  

DOE Green Energy (OSTI)

Research barriers continue to exist in all phases of the emerging cellulosic ethanol biorefining industry. These barriers include the identification and development of a sustainable and abundant biomass feedstock, the assembly of viable assembly systems formatting the feedstock and moving it from the field (e.g., the forest) to the biorefinery, and improving conversion technologies. Each of these phases of cellulosic ethanol production are fundamentally connected, but computational tools used to support and inform analysis within each phase remain largely disparate. This paper discusses the integration of a feedstock assembly system modeling toolkit and an Aspen Plus conversion process model. Many important biomass feedstock characteristics, such as composition, moisture, particle size and distribution, ash content, etc. are impacted and most effectively managed within the assembly system, but generally come at an economic cost. This integration of the assembly system and the conversion process modeling tools will facilitate a seamless investigation of the assembly system conversion process interface. Through the integrated framework, the user can design the assembly system for a particular biorefinery by specifying location, feedstock, equipment, and unit operation specifications. The assembly system modeling toolkit then provides economic valuation, and detailed biomass feedstock composition and formatting information. This data is seamlessly and dynamically used to run the Aspen Plus conversion process model. The model can then be used to investigate the design of systems for cellulosic ethanol production from field to final product.

Jared M. Abodeely; Douglas S. McCorkle; Kenneth M. Bryden; David J. Muth; Daniel Wendt; Kevin Kenney

2010-09-01T23:59:59.000Z

412

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

413

NREL: Biomass Research - Biochemical Conversion Capabilities  

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

Biochemical Conversion Capabilities Biochemical Conversion Capabilities NREL researchers are working to improve the efficiency and economics of the biochemical conversion process by focusing on the most challenging steps in the process. Biochemical conversion of biomass to biofuels involves three basic steps: Converting biomass to sugar or other fermentation feedstock through: Pretreatment Conditioning and enzymatic hydrolysis Enzyme development. Fermenting these biomass-derived feedstocks using: Microorganisms for fermentation. Processing the fermentation product to produce fuel-grade ethanol and other fuels, chemicals, heat, and electricity by: Integrating the bioprocess. Get the Adobe Flash Player to see this video. This video is a narrated animation that explains the biochemical conversion

414

Biomass thermochemical conversion program: 1987 annual report  

DOE Green Energy (OSTI)

The objective of the Biomass Thermochemical Conversion Program is to generate a base of scientific data and conversion process information that will lead to establishment of cost-effective processes for conversion of biomass resources into clean fuels. To accomplish this objective, in fiscal year 1987 the Thermochemical Conversion Program sponsored research activities in the following four areas: Liquid Hydrocarbon Fuels Technology; Gasification Technology; Direct Combustion Technology; Program Support Activities. In this report an overview of the Thermochemical Conversion Program is presented. Specific research projects are then described. Major accomplishments for 1987 are summarized.

Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

1988-01-01T23:59:59.000Z

415

Biomass thermochemical conversion program. 1985 annual report  

DOE Green Energy (OSTI)

Wood and crop residues constitute a vast majority of the biomass feedstocks available for conversion, and thermochemical processes are well suited for conversion of these materials. The US Department of Energy (DOE) is sponsoring research on this conversion technology for renewable energy through its Biomass Thermochemical Conversion Program. The Program is part of DOE's Biofuels and Municipal Waste Technology Division, Office of Renewable Technologies. This report briefly describes the Thermochemical Conversion Program structure and summarizes the activities and major accomplishments during fiscal year 1985. 32 figs., 4 tabs.

Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

1986-01-01T23:59:59.000Z

416

Mode conversion studies in TFTR  

SciTech Connect

Mode converted Ion Bernstein Waves (IBW) have important potential applications in tokamak reactors. These applications include on or off axis electron heating and current drive and the channeling of alpha particle power for both current drive and increased reactivity. Efficient mode conversion electron heating with a low field side antenna, with both on and off axis power deposition, has been demonstrated for the first time in TFTR in D{sup 3}He-{sup 4}He plasmas. Up to 80% of the Ion Cyclotron Range of Frequency (ICRF) power is coupled to electrons at the mode conversion surface. Experiments during deuterium and tritium neutral beam injection (NBI) indicate that good mode conversion efficiency can be maintained during NBI if sufficient {sup 3}He is present. No evidence of strong alpha particle heating by the IBW is seen. Recent modeling indicates that if the mode converted IBW is preferentially excited off the horizontal midplane then the resultant high poloidal mode number wave may channel alpha particle power to either electrons or ions. In TFTR both the propagation of the IBW and its effect on the alpha particle population is being investigated. Experiments with 2 MW of ICRF power launched with {+-} 90{degree} antenna phasing for current drive show that electron heating and sawtooth activity depend strongly on the direction of the launched wave. The noninductively driven current could not be experimentally determined in these relatively high plasma current, short pulse discharges. Experiments at higher RF power and lower plasma current are planned to determine on and off axis current drive efficiency.

Majeski, R.; Fisch, N.J.; Adler, H.

1995-03-01T23:59:59.000Z

417

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

418

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

419

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

420

Formation of alcohol conversion catalysts  

DOE Patents (OSTI)

The method of the present invention involves a composition containing an intimate mixture of (a) metal oxide support particles and (b) a catalytically active metal oxide from Groups VA, VIA, or VIIA, its method of manufacture, and its method of use for converting alcohols to aldehydes. During the conversion process, catalytically active metal oxide from the discrete catalytic metal oxide particles migrates to the oxide support particles and forms a monolayer of catalytically active metal oxide on the oxide support particle to form a catalyst composition having a higher specific activity than the admixed particle composition.

Wachs, Israel E. (Bridgewater, NJ); Cai, Yeping (Louisville, KY)

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical forest conversion" 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

Biomass Thermochemical Conversion Program: 1986 annual report  

DOE Green Energy (OSTI)

Wood and crop residues constitute a vast majority of the biomass feedstocks available for conversion, and thermochemical processes are well suited for conversion of these materials. Thermochemical conversion processes can generate a variety of products such as gasoline hydrocarbon fuels, natural gas substitutes, or heat energy for electric power generation. The US Department of Energy is sponsoring research on biomass conversion technologies through its Biomass Thermochemical Conversion Program. Pacific Northwest Laboratory has been designated the Technical Field Management Office for the Biomass Thermochemical Conversion Program with overall responsibility for the Program. This report briefly describes the Thermochemical Conversion Program structure and summarizes the activities and major accomplishments during fiscal year 1986. 88 refs., 31 figs., 5 tabs.

Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

1987-01-01T23:59:59.000Z

422

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

423

Biological conversion of synthesis gas  

DOE Green Energy (OSTI)

Mass transfer and kinetic studies were carried out for the Rhodospirillum rubrum and Chlorobium thiosulfatophilum bacterial systems. R. rubrum is a photosynthetic anaerobic bacterium which catalyzes the biological water gas shift reaction: CO + H[sub 2]0 [yields] CO[sub 2] + H[sub 2]. C. thiosulfatophilum is also a H[sub 2]S and COS to elemental sulfur. The growth of R. rubrum may be satisfactorily carried out at 25[degree] and 30[degree]C, while CO uptake and thus the conversion of CO best occurs at temperatures of either 30[degree], 32[degree] or 34[degree]C. The rate of conversion of COs and H[sub 2]O to CO[sub 2] and H[sub 2]S may be modeled by a first order rate expression. The rate constant at 30[degree]C was found to be 0.243 h[sup [minus]1]. The growth of C. thiosulfatophilum may be modeled in terms of incoming light intensity using a Monod equation: [mu] = [sub 351] + I[sub o]/[sup 0.152]I[sub o]. Comparisons of the growth of R. rubrum and C. thiosulfatophilum shows that the specific growth rate of C. thiosulfatophilum is much higher at a given light intensity.

Klasson, K.T.; Basu, R.; Johnson, E.R.; Clausen, E.C.; Gaddy, J.L.

1992-03-01T23:59:59.000Z

424

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 Nio, 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

425

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...

426

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

427

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

428

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...

429

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...

430

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

431

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...

432

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...

433

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...

434

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

435

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

436

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

437

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

438

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

439

The 3060-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 3060-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

440

23-Day Convective Variability in the Tropical Western Pacific  

Science Conference Proceedings (OSTI)

This paper is an examination of 23-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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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

442

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

443

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

444

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

445

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

Science Conference Proceedings (OSTI)

Tropical plumes (TPs) reflect tropicalextratropical 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

446

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

447

Explorations of Novel Energy Conversion and Storage Systems  

E-Print Network (OSTI)

of Novel Energy Conversion and Storage Systems By Andrewof Novel Energy Conversion and Storage Systems by Andrew

Duffin, Andrew Mark

2010-01-01T23:59:59.000Z

448

Microturbine Power Conversion Technology Review  

SciTech Connect

In this study, the Oak Ridge National Laboratory (ORNL) is performing a technology review to assess the market for commercially available power electronic converters that can be used to connect microturbines to either the electric grid or local loads. The intent of the review is to facilitate an assessment of the present status of marketed power conversion technology to determine how versatile the designs are for potentially providing different services to the grid based on changes in market direction, new industry standards, and the critical needs of the local service provider. The project includes data gathering efforts and documentation of the state-of-the-art design approaches that are being used by microturbine manufacturers in their power conversion electronics development and refinement. This project task entails a review of power converters used in microturbines sized between 20 kW and 1 MW. The power converters permit microturbine generators, with their non-synchronous, high frequency output, to interface with the grid or local loads. The power converters produce 50- to 60-Hz power that can be used for local loads or, using interface electronics, synchronized for connection to the local feeder and/or microgrid. The power electronics enable operation in a stand-alone mode as a voltage source or in grid-connect mode as a current source. Some microturbines are designed to automatically switch between the two modes. The information obtained in this data gathering effort will provide a basis for determining how close the microturbine industry is to providing services such as voltage regulation, combined control of both voltage and current, fast/seamless mode transfers, enhanced reliability, reduced cost converters, reactive power supply, power quality, and other ancillary services. Some power quality improvements will require the addition of storage devices; therefore, the task should also determine what must be done to enable the power conversion circuits to accept a varying dc voltage source. The study will also look at technical issues pertaining to the interconnection and coordinated/compatible operation of multiple microturbines. It is important to know today if modifications to provide improved operation and additional services will entail complete redesign, selected component changes, software modifications, or the addition of power storage devices. This project is designed to provide a strong technical foundation for determining present technical needs and identifying recommendations for future work.

Staunton, R.H.

2003-07-21T23:59:59.000Z

449

Conversion of forest residues to a methane-rich gas in a high-throughput gasifier  

DOE Green Energy (OSTI)

Research was conducted in a process research unit to develop an entrained bed gasifier which is supplied heat by recirculating a stream of sand between a separate combustion vessel and the gasifier. The char remaining after gasification of the wood provides the fuel for the combustor. The research program was conducted in two phases. In the first phase, a 6 in. I.D. gasifier was used to establish the feasibility of the concept for a wide variety of biomass feeds. The second phase of the program was conducted with a 10 in. I.D. gasifier, and a fully automated feeder system, to evaluate gasifier performance at very high feed rates. The experimental results were used to develop design parameters and detailed energy and material balances for a conceptual plant. A preliminary cost analysis is presented in the report based on the conceptual design. 5 refs., 24 figs., 13 tabs.

Feldmann, H.F.; Paisley, M.A.; Appelbaum, H.R.; Taylor, D.R.

1988-05-01T23:59:59.000Z

450

Conversion of forest residues to a methane-rich gas. Detailed economic feasibility study  

DOE Green Energy (OSTI)

An economic evaluation of the application of the multi-solid fluid reactor design to wood gasification was completed. The processing options examined include plant capacity, production of a high-Btu (1006 Btu/SCF HHV) gas versus an intermediate-Btu gas (379 Btu/SCF HHV), and operating pressure. 9 figs., 29 tabs.

Not Available

1986-03-01T23:59:59.000Z

451

Energy Calculator- Common Units and Conversions  

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

Energy Calculator - Common Units and Conversions Energy Calculator - Common Units and Conversions Calculators for Energy Used in the United States: Coal Electricity Natural Gas Crude Oil Gasoline Diesel & Heating Oil Coal Conversion Calculator Short Tons Btu Megajoules Metric Tons Clear Calculate 1 Short Ton = 20,169,000 Btu (based on U.S. consumption, 2007) Electricity Conversion Calculator KilowattHours Btu Megajoules million Calories Clear Calculate 1 KilowattHour = 3,412 Btu Natural Gas Conversion Calculator Cubic Feet Btu Megajoules Cubic Meters Clear Calculate 1 Cubic Foot = 1,028 Btu (based on U.S. consumption, 2007); 1 therm = 100,000 Btu; 1 terajoule = 1,000,000 megajoules Crude Oil Conversion Calculator Barrels Btu Megajoules Metric Tons* Clear Calculate 1 Barrel = 42 U.S. gallons = 5,800,000 Btu (based on U.S. consumption,

452

Documents: DUF6 Conversion EIS Supporting Documents  

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

DUF6 Conversion EIS DUF6 Conversion EIS Search Documents: Search PDF Documents View a list of all documents NEPA Compliance: DUF6 Conversion EIS Supporting Documents PDF Icon Notice of Change in National Environmental Policy Act (NEPA) Compliance Approach for the Depleted Uranium Hexafluoride (DUF6) Conversion Facilities Project 38 KB details PDF Icon Press Release: DOE Seeks Public Input for Depleted Uranium Hexafluoride Environmental Impact Statement 90 KB details PDF Icon Advance Notice of Intent To Prepare an Environmental Impact Statement for Depleted Uranium Hexafluoride Conversion Facilities 52 KB details PDF Icon Notice of Intent to Prepare an Environmental Impact Statement for Depleted Uranium Hexafluoride Conversion Facilities 60 KB details PDF Icon Overview: Depleted Uranium Hexafluoride (DUF6) Management Program

453

DUF6 Conversion Facility EIS Alternatives  

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

Alternatives Alternatives Depleted UF6 Conversion Facility EIS Alternatives Alternatives included in the Depleted UF6 Conversion Facility EISs. Proposed Action The proposed action evaluated in each EIS is to construct and operate a conversion facility at each site for conversion of the DOE DUF6 inventory. The time period considered is a construction period of approximately 2 years, an operational period of 25 years at Paducah and 18 years at Portsmouth, and the decontamination and decommissioning (D&D) of the facility of about 3 years. The EISs assess the potential environmental impacts from the following proposed activities: Construction, operation, maintenance, and D&D of the proposed DUF6 conversion facility at each site; Transportation of uranium conversion products and waste materials to a disposal facility;

454

NPP Boreal Forest: Mississagi, Canada  

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

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.

455

NPP Boreal Forest: Schefferville, Canada  

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

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

456

Advanced Coal Conversion Process Demonstration  

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

Clean Coal Technology Program Clean Coal Technology Program Advanced Coal Conversion Process Demonstration A DOE Assessment DOE/NETL-2005/1217 U.S. Department of Energy Office of Fossil Energy National Energy Technology Laboratory April 2005 2 Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name,

457

Power conversion apparatus and method  

DOE Patents (OSTI)

A power conversion apparatus includes an interfacing circuit that enables a current source inverter to operate from a voltage energy storage device (voltage source), such as a battery, ultracapacitor or fuel cell. The interfacing circuit, also referred to as a voltage-to-current converter, transforms the voltage source into a current source that feeds a DC current to a current source inverter. The voltage-to-current converter also provides means for controlling and maintaining a constant DC bus current that supplies the current source inverter. The voltage-to-current converter also enables the current source inverter to charge the voltage energy storage device, such as during dynamic braking of a hybrid electric vehicle, without the need of reversing the direction of the DC bus current.

Su, Gui-Jia (Knoxville, TN)

2012-02-07T23:59:59.000Z

458

Cleanup of hydrocarbon conversion system  

Science Conference Proceedings (OSTI)

This patent describes a process for the catalytic reforming of a substantially contaminant-free second hydrocarbon feed using a second reforming catalyst, in a catalytic-reforming system having equipment contaminated through contact with a contaminant-containing prior feed. It comprises: contacting the first hydrocarbon feed in the catalytic-reforming system at first reforming conditions with a first reforming catalyst until contaminant removal from the conversion system is substantially completed and the system is contaminant-free; thereafter replacing the first reforming catalyst in the contaminant-free catalytic-reforming system with a second reforming catalyst; and thereafter contacting the second hydrocarbon feed in the contaminant-free catalytic-reforming system with the second reforming catalyst at second reforming conditions.

Peer, R.L.; Russ, M.B.

1990-07-10T23:59:59.000Z

459

Introduction to Solar Photon Conversion  

SciTech Connect

The efficient and cost-effective direct conversion of solar photons into solar electricity and solar fuels is one of the most important scientific and technological challenges of this century. It is estimated that at least 20 terawatts of carbon-free energy (1 and 1/2 times the total amount of all forms of energy consumed today globally), in the form of electricity and liquid and gaseous fuels, will be required by 2050 in order to avoid the most serious consequences of global climate change and to ensure adequate global energy supply that will avoid economic chaos. But in order for solar energy to contribute a major fraction of future carbon-free energy supplies, it must be priced competitively with, or perhaps even be less costly than, energy from fossil fuels and nuclear power as well as other renewable energy resources. The challenge of delivering very low-cost solar fuels and electricity will require groundbreaking advances in both fundamental and applied science. This Thematic Issue on Solar Photon Conversion will provide a review by leading researchers on the present status and prognosis of the science and technology of direct solar photoconversion to electricity and fuels. The topics covered include advanced and novel concepts for low-cost photovoltaic (PV) energy based on chemistry (dye-sensitized photoelectrodes, organic and molecular PV, multiple exciton generation in quantum dots, singlet fission), solar water splitting, redox catalysis for water oxidation and reduction, the role of nanoscience and nanocrystals in solar photoconversion, photoelectrochemical energy conversion, and photoinduced electron transfer. The direct conversion of solar photons to electricity via photovoltaic (PV) cells is a vital present-day commercial industry, with PV module production growing at about 75%/year over the past 3 years. However, the total installed yearly averaged energy capacity at the end of 2009 was about 7 GW-year (0.2% of global electricity usage). Thus, there is potential for the PV industry to grow enormously in the future (by factors of 100-300) in order for it to provide a significant fraction of total global electricity needs (currently about 3.5 TW). Such growth will be greatly facilitated by, and probably even require, major advances in the conversion efficiency and cost reduction for PV cells and modules; such advances will depend upon advances in PV science and technology, and these approaches are discussed in this Thematic Issue. Industrial and domestic electricity utilization accounts for only about 30% of the total energy consumed globally. Most ({approx}70%) of our energy consumption is in the form of liquid and gaseous fuels. Presently, solar-derived fuels are produced from biomass (labeled as biofuels) and are generated through biological photosynthesis. The global production of liquid biofuels in 2009 was about 1.6 million barrels/day, equivalent to a yearly output of about 2.5 EJ (about 1.3% of global liquid fuel utilization). The direct conversion of solar photons to fuels produces high-energy chemical products that are labeled as solar fuels; these can be produced through nonbiological approaches, generally called artificial photosynthesis. The feedstocks for artificial photosynthesis are H{sub 2}O and CO{sub 2}, either reacting as coupled oxidation-reduction reactions, as in biological photosynthesis, or by first splitting H{sub 2}O into H{sub 2} and O{sub 2} and then reacting the solar H{sub 2} with CO{sub 2} (or CO produced from CO2) in a second step to produce fuels through various well-known chemical routes involving syngas, water gas shift, and alcohol synthesis; in some applications, the generated solar H{sub 2} itself can be used as an excellent gaseous fuel, for example, in fuel cells. But at the present time, there is no solar fuels industry. Much research and development are required to create a solar fuels industry, and this Thematic Issue presents several reviews on the relevant solar fuels science and technology. The first three manuscripts relate to the daunting problem of producing

Nozik, A.; Miller, J.

2010-11-10T23:59:59.000Z

460

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

Note: This page contains sample records for the topic "tropical forest conversion" 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

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.

462

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

463

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:

464

Frequency Conversion Interfaces for Photonic Quantum ...  

Science Conference Proceedings (OSTI)

... by nearly two orders of magnitude while maintaining equal conversion efficiency. ... focused on developing approaches to tune the energy levels of ...

2013-07-02T23:59:59.000Z

465

Novel Nitride-Modified Multielectron Conversion Electrode ...  

Novel Nitride-Modified Multielectron Conversion Electrode Materials for Lithium Ion Batteries Note: The technology described above is an early stage opportunity.

466

Share of Conversion Capacity - Energy Information Administration  

U.S. Energy Information Administration (EIA)

In the early to mid 1980s, Atlantic Basin refiners rapidly expanded their conversion capacity as a consequence of the belief that world crude production would get ...

467

Catalytic Conversion of Bioethanol to Hydrocarbons  

ORNL 2011-G00219/jcn UT-B ID 201002414 08.2011 Catalytic Conversion of Bioethanol to Hydrocarbons Technology Summary A method for catalytically converting an alcohol ...

468

Direct Conversion of Biomass into Transportation Fuels  

Direct Conversion of Biomass into Transportation Fuels . Return to Marketing Summary. Skip footer navigation to end of page. Contacts | Web Site Policies | U.S ...

469

Conversion of Ultra High Performance Carbon Fiber  

Conversion of Ultra High Performance Carbon Fiber Note: The technology described above is an early stage opportunity. Licensing rights to this intellectual property may

470

Energy Basics: Ocean Thermal Energy Conversion  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Ocean Thermal Energy Conversion Tidal Energy Wave Energy...

471

Catalytic Conversion of Bioethanol to Hydrocarbons  

ORNL 2011-G00219/jcn UT-B ID 201002414 08.2011 Catalytic Conversion of Bioethanol to Hydrocarbons Technology Summary A method for catalytically ...

472

Converse, Texas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

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

473

Landholders, Residential Land Conversion, and Market Signals  

E-Print Network (OSTI)

465 Margulis: Landholders, Residential Land Conversion, and1983. An Analysis of Residential Developer Location FactorsHow Regulation Affects New Residential Development. New

Margulis, Harry L.

2006-01-01T23:59:59.000Z

474

Bioenergy Technologies Office: Processing and Conversion  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

sugar-rich stream (hydrolyzate) is fed to organisms that ferment the sugars to fuel precursor molecules. The biochemical conversion platform also has a large stake in some...

475

"Approaches to Ultrahigh Efficiency Solar Energy Conversion"...  

Office of Science (SC) Website

"Approaches to Ultrahigh Efficiency Solar Energy Conversion" Webinar Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events EFRC News...

476

"Fundamental Challenges in Solar Energy Conversion" workshop...  

Office of Science (SC) Website

Fundamental Challenges in Solar Energy Conversion" workshop hosted by LMI-EFRC Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events...

477

Conversion factors for energy equivalents: All factors  

Science Conference Proceedings (OSTI)

... Previous page of energy equivalents. Definition of uncertainty notation eg, 123(45) | Basis of conversion factors for energy equivalents. Top. ...

478

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

479

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

480

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

Note: This page contains sample records for the topic "tropical forest conversion" 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.


481

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

482

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.

483

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...

484

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

485

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...

486

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

487

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

488

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

489

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

490

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

491

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

492

Midlevel Ventilations 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 cyclones intensity. An idealized framework based ...

Brian Tang; Kerry Emanuel

2010-06-01T23:59:59.000Z

493

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

494

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

495

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, Hlne; 10.1029/2008GL036289

2009-01-01T23:59:59.000Z

496

Corrosion and biofouling on the non-heat-exchanger surfaces of an ocean thermal energy conversion power plant: a survey  

DOE Green Energy (OSTI)

Of the many foreseeable problems confronting economical ocean thermal energy conversion operation, two major items are the deterioration of the structural and functional components, which prevents efficient operation, and the biofouling of the surfaces, which adds excess weight to the floating ocean platform. The techniques required for effective long-term control of deterioration and corrosion have been investigated actively for many years, and successful solutions for most situations have been developed. For the most part, these solutions can be directly transferred to the ocean thermal energy conversion plant. The majority of problems in these areas are expected to be associated with scale-up and will require some advanced development due to the immensity of the ocean thermal energy conversion platform. Current antifouling control systems are not effective for long-term fouling prevention. Commercially available antifouling coatings are limited to a 3-year service life in temperate waters, and even shorter in tropical waters. However, underwater cleaning techniques and some fouling-control systems presently being used by conventional power plants may find utility on an ocean thermal energy conversion plant. In addition, some recent major advances in long-term antifouling coatings sponsored by the Navy may be applicable to ocean thermal energy conversion. 132 references.

Castelli, V.J. (ed.)

1979-05-01T23:59:59.000Z

497

Generative conversation tool for game writers  

Science Conference Proceedings (OSTI)

Conversation is an important part of many games, whether it is there to provide information or entertainment. In the current state of commercial game development, almost all conversation is hand-authored. Further, different authoring approaches are used ... Keywords: authoring tools, dialogue generation, game development

Christina R. Strong; Michael Mateas; Dave Grossman

2009-04-01T23:59:59.000Z

498

Heat to electricity thermoacoustic-magnetohydrodynamic conversion  

E-Print Network (OSTI)

In this work, a new concept for the conversion of heat into electricity is presented. The conversion is based on the combined effects of a thermoacoustic prime mover coupled with a magnetohydrodynamic generator, using different working fluids in each process. The results of preliminary experiments are also presented.

A. A. Castrejon-Pita; G. Huelsz

2006-10-12T23:59:59.000Z

499

1982 annual report: Biomass Thermochemical Conversion Program  

DOE Green Energy (OSTI)

This report provides a brief overview of the Thermochemical Conversion Program's activities and major accomplishments during fiscal year 1982. The objective of the Biomass Thermochemical Conversion Program is to generate scientific data and fundamental biomass converison process information that, in the long term, could lead to establishment of cost effective processes for conversion of biomass resources into clean fuels and petrochemical substitutes. The goal of the program is to improve the data base for biomass conversion by investigating the fundamental aspects of conversion technologies and exploring those parameters which are critical to these conversion processes. To achieve this objective and goal, the Thermochemical Conversion Program is sponsoring high-risk, long-term research with high payoff potential which industry is not currently sponsoring, nor is likely to support. Thermochemical conversion processes employ elevated temperatures to convert biomass materials into energy. Process examples include: combustion to produce heat, steam, electricity, direct mechanical power; gasification to produce fuel gas or synthesis gases for the production of methanol and hydrocarbon fuels; direct liquefaction to produce heavy oils or distillates; and pyrolysis to produce a mixture of oils, fuel gases, and char. A bibliography of publications for 1982 is included.

Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

1983-01-01T23:59:59.000Z

500

Biomass thermal conversion research at SERI  

DOE Green Energy (OSTI)

SERI's involvement in the thermochemical conversion of biomass to fuels and chemicals is reviewed. The scope and activities of the Biomass Thermal Conversion and Exploratory Branch are reviewed. The current status and future plans for three tasks are presented: (1) Pyrolysis Mechanisms; (2) High Pressure O/sub 2/ Gasifier; and (3) Gasification Test Facility.

Milne, T. A.; Desrosiers, R. E.; Reed, T. B.

1980-09-01T23:59:59.000Z