Sample records for tropical africa angola

  1. Tropical Africa: Land Use, Biomass, and Carbon Estimates for 1980 (NDP-055)

    SciTech Connect (OSTI)

    Brown, S.

    2002-04-16T23:59:59.000Z

    This document describes the contents of a digital database containing maximum potential aboveground biomass, land use, and estimated biomass and carbon data for 1980. The biomass data and carbon estimates are associated with woody vegetation in Tropical Africa. These data were collected to reduce the uncertainty associated with estimating historical releases of carbon from land use change. Tropical Africa is defined here as encompassing 22.7 x 10{sup 6} km{sup 2} of the earth's land surface and is comprised of countries that are located in tropical Africa (Angola, Botswana, Burundi, Cameroon, Cape Verde, Central African Republic, Chad, Congo, Benin, Equatorial Guinea, Ethiopia, Djibouti, Gabon, Gambia, Ghana, Guinea, Ivory Coast, Kenya, Liberia, Madagascar, Malawi, Mali, Mauritania, Mozambique, Namibia, Niger, Nigeria, Guinea-Bissau, Zimbabwe (Rhodesia), Rwanda, Senegal, Sierra Leone, Somalia, Sudan, Tanzania, Togo, Uganda, Burkina Faso (Upper Volta), Zaire, and Zambia). The database was developed using the GRID module in the ARC/INFO{trademark} geographic information system. Source data were obtained from the Food and Agriculture Organization (FAO), the U.S. National Geophysical Data Center, and a limited number of biomass-carbon density case studies. These data were used to derive the maximum potential and actual (ca. 1980) aboveground biomass values at regional and country levels. The land-use data provided were derived from a vegetation map originally produced for the FAO by the International Institute of Vegetation Mapping, Toulouse, France.

  2. Tropical timber import export Africa Asia volume Congo India Nigeria Papua New Guinea & the Solomon Islands

    E-Print Network [OSTI]

    Tropical timber import export Africa Asia volume Congo India Nigeria Papua New Guinea & the Solomon/14/2008 12:55:54 PM] #12;Tropical timber import export Africa Asia volume Congo India Nigeria Volume ('000 m3 import export Africa Asia volume Congo India Nigeria Papua New Guinea Reports (commissioned

  3. Tropical Africa: Land use, biomass, and carbon estimates for 1980

    SciTech Connect (OSTI)

    Brown, S. [Environmental Protection Agency, Corvallis, OR (United States). Western Ecology Division; Gaston, G. [Environmental Protection Agency, Corvallis, OR (United States). National Research Council; Daniels, R.C. [ed.] [Oak Ridge National Lab., TN (United States)

    1996-06-01T23:59:59.000Z

    This document describes the contents of a digital database containing maximum potential aboveground biomass, land use, and estimated biomass and carbon data for 1980 and describes a methodology that may be used to extend this data set to 1990 and beyond based on population and land cover data. The biomass data and carbon estimates are for woody vegetation in Tropical Africa. These data were collected to reduce the uncertainty associated with the possible magnitude of historical releases of carbon from land use change. Tropical Africa is defined here as encompassing 22.7 x 10{sup 6} km{sup 2} of the earth`s land surface and includes those countries that for the most part are located in Tropical Africa. Countries bordering the Mediterranean Sea and in southern Africa (i.e., Egypt, Libya, Tunisia, Algeria, Morocco, South Africa, Lesotho, Swaziland, and Western Sahara) have maximum potential biomass and land cover information but do not have biomass or carbon estimate. The database was developed using the GRID module in the ARC/INFO{sup TM} geographic information system. Source data were obtained from the Food and Agriculture Organization (FAO), the U.S. National Geophysical Data Center, and a limited number of biomass-carbon density case studies. These data were used to derive the maximum potential and actual (ca. 1980) aboveground biomass-carbon values at regional and country levels. The land-use data provided were derived from a vegetation map originally produced for the FAO by the International Institute of Vegetation Mapping, Toulouse, France.

  4. Africa: Prosperous times

    SciTech Connect (OSTI)

    NONE

    1996-08-01T23:59:59.000Z

    Political instability and corruption is the rule, rather than the exception, in Africa`s main producing regions, but exploration and production prospects there are bright and attractive to foreign operators. The paper discusses exploration, drilling, resource development, and production in Nigeria, Libya, Algeria, Egypt, Angola, Congo, Gabon, and Tunisia. The other countries of Africa are briefly mentioned, i.e., Cameroon, Cote D`Ivoire, South Africa, Sudan, Namibia, Equatorial Guinea, Eritrea, Zaire, Mozambique, Ghana, Niger, and Seychelles.

  5. Draft January 13, (ver 12) Africas technology leap are we part of the development?

    E-Print Network [OSTI]

    . Examples are countries like South Africa, Kenya, Nigeria and Angola. A driving factor has been Brazilian, ABB, Head of Public Affairs - Sweden and Northern Europe Region "Sun-energy project Sub Saharan Africa

  6. Angola: World Oil Report 1991

    SciTech Connect (OSTI)

    Not Available

    1991-08-01T23:59:59.000Z

    This paper reports that prospects of Angola, free of political complications, are certain to bring a flurry of interest from oil firms and could mean an influx of foreign capital. Licensing will be under production-sharing terms, but incentives may be offered due to increased risks inherent in deeper water. Long term security and stability remain uncertain. In addition to Unita and previously communist MPLA, new factions from 16 years of civil war are gaining support and increasing possibilities for violence. Oil firms consider production-sharing terms high and current price cap clauses keep them from realizing benefits from price increases after contracts are signed. However, geology and exploration successes have overshadowed concerns.

  7. AFRICA ASIA SOUTH AMERICA Algeria Afghanistan Argentina

    E-Print Network [OSTI]

    Oxford, University of

    AFRICA ASIA SOUTH AMERICA Algeria Afghanistan Argentina Angola Armenia Bolivia Benin Azerbaijan Senegal Syria Seychelles Taiwan (Republic of China) Sierra Leone Tajikistan Somalia Thailand South Africa Kazakhstan Guinea Korea (North) Guinea-Bissau Korea (South) Kenya Kuwait Lesotho Kyrgyzstan Liberia Lao PDR

  8. angola iran nigeria: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and the Question of Street Politics Illinois at Chicago, University of 12 Angola Croatia Iceland Nepal Sri Lanka Antigua & Barbuda Cuba India Netherlands St. Kitts & Nevis...

  9. Ending Africa's Poverty Trap Africa's development crisis is unique. Not only is Africa the poorest

    E-Print Network [OSTI]

    (Botswana, Lesotho, Namibia, South Africa, and Swaziland), and a num- ber of very small economies (Cape assistance on issues regarding energy and transport infrastructure. #12;than tropical Africa. They growEnding Africa's Poverty Trap Africa's development crisis is unique. Not only is Africa the poorest

  10. Angola: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia: Energy Resources JumpAnaconda, Montana: Energy| Open EnergyAngola:

  11. Crude Existence: The Politics of Oil in Northern Angola

    E-Print Network [OSTI]

    Reed, Kristin

    2009-01-01T23:59:59.000Z

    instalações específicas da PIR. Jornal de Angola, June 27.the rapid intervention police (PIR) in the municipality at aassured civilians that the PIR’s mission in Soyo would be “

  12. Crude Existence: The Politics of Oil in Northern Angola

    E-Print Network [OSTI]

    Reed, Kristin

    2009-01-01T23:59:59.000Z

    iolence as Angola nears peak oil production and a widerproduction cuts may forestall peak oil by a few years, butAngolan oil production capacity is expected to peak between

  13. Crude Existence: The Politics of Oil in Northern Angola

    E-Print Network [OSTI]

    Reed, Kristin

    2009-01-01T23:59:59.000Z

    aimed at securing oil resources in the Gulf of Guinea (of (as yet unproven) oil resources in Angola (EIA 2008; Lylemost valuable natural resource: oil. But oil extraction—both

  14. Crude Existence: The Politics of Oil in Northern Angola

    E-Print Network [OSTI]

    Reed, Kristin

    2009-01-01T23:59:59.000Z

    Petroleum. 2007a. Angola LNG: A Lesson in How to Win Friendsand Zoe Eisenstein. 2004. LNG Plants Seed of Hope in Soyo.a liquefied natural gas (LNG) plant to process and export

  15. Angola, New York: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat Place:Alvan2809328°,Anfu Guanshan HydropowerTexas:Angola on

  16. Africa: Unrest and restrictive terms limit abundant potential. [Oil and gas exploration and development in Africa

    SciTech Connect (OSTI)

    Not Available

    1993-08-01T23:59:59.000Z

    This paper summarizes the drilling and exploration activity of the oil and gas industries of Egypt, Libya, Tunisia, Algeria, Morocco, Nigeria, Cameroon, Gabon, the Congo, Angola, and South Africa. Information is provided on current and predicted trends in well drilling activities (both onshore and offshore), numbers of new wells, footage information, production statistics and what fields accounted for this production, and planned new exploration activities. The paper also describes the current status of government policies and political problems affecting the oil and gas industry.

  17. Simulating the connections of ENSO and the rainfall regime of East Africa and the upper Blue Nile region using a climate model of the Tropics

    E-Print Network [OSTI]

    Zaroug, M. A. H.

    We simulate the observed statistical relationship between ENSO and the rainfall regime of the upper Blue Nile using the tropical-band version of the regional climate model RegCM4 (or Reg-TB). An ensemble of nine simulations ...

  18. Crude Existence: The Politics of Oil in Northern Angola

    E-Print Network [OSTI]

    Reed, Kristin

    2009-01-01T23:59:59.000Z

    2005. Bassey, Nnimmo. 2000. “Oil and Gas in Africa. ” Paperat the Gulf of Guinea Oil and Gas Conference. February 5 –6,Mercury from Discharges from Oil and Gas Platforms. http://

  19. FAO Forestry Department Wood Energy WISDOM East Africa

    E-Print Network [OSTI]

    FAO ­ Forestry Department ­ Wood Energy WISDOM ­ East Africa Woodfuel Integrated Supply and Tropical Southern Africa woodfuels, mainly fuelwood, contribute from 75 to 86 percent of total primary African countries Rudi Drigo Consultant - Wood energy planning and forest resources monitoring August 2005

  20. Angola on the Lake, New York: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat Place:Alvan2809328°,Anfu Guanshan HydropowerTexas:Angola on the

  1. Earth Planets Space, 52, 329336, 2000 Rock magnetism of sediments in the Angola-Namibia upwelling system

    E-Print Network [OSTI]

    Yamazaki, Toshitsugu

    Earth Planets Space, 52, 329­336, 2000 Rock magnetism of sediments in the Angola-Namibia upwelling system with special reference to loss of magnetization after core recovery Toshitsugu Yamazaki1 , Peter A Magnetism, University of Minnesota, Minneapolis, MN 55455-0128, U.S.A. 3Hawaii Institute of Geophysics

  2. Oil and gas developments in central and southern Africa in 1987

    SciTech Connect (OSTI)

    Hartman, J.B.; Walker, T.L.

    1988-10-01T23:59:59.000Z

    Significant rightholding changes took place in central and southern Africa during 1987. Angola, Benin, Congo, Gabon, Ghana, Guinea, Guinea Bissau, Mauritania, Seychelles, Somali Republic, Tanzania, Zaire, and Zambia announced awards or acreage open for bidding. Decreases in exploratory rightholdings occurred in Cameroon, Congo, Cote d'Ivoire, Equatorial Guinea, Gabon, Kenya, Namibia, South Africa, and Tanzania. More wells and greater footage were drilled in 1987 than in 1986. Total wells increased by 18% as 254 wells were completed compared to 217 in 1986. Footage drilled during the year increased by 46% as about 1.9 million ft were drilled compared to about 1.3 million ft in 1986. The success rate for exploration wells in 1987 improved slightly to 36% compared to 34% in 1986. Significant discoveries were made in Nigeria, Angola, Congo, and Gabon. Seismic acquisition in 1987 was the major geophysical activity during the year. Total oil production in 1987 was 773 million bbl (about 2.1 million b/d), a decrease of 7%. The decrease is mostly due to a 14% drop in Nigerian production, which comprises 60% of total regional production. The production share of OPEC countries (Nigeria and Gabon) versus non-OPEC countries of 67% remained unchanged from 1986. 24 figs., 5 tabs.

  3. SOUTH AFRICA'S MEERKAT ARRAY

    E-Print Network [OSTI]

    Jarrett, Thomas H.

    SOUTH AFRICA'S MEERKAT ARRAY THE MEERKAT ARRAY, currently taking shape in South Africa's Karoo) is completed around 2024. Via MeerKAT, South Africa is playing a key role in design and technology developments at the engineering office in Cape Town, and at universities and technology companies across South Africa and Africa

  4. Biodiversity Conservation in Sub-Saharan Africa: A Case Study of the African Dwarf Crocodiles (Osteolaemus Spp.)

    E-Print Network [OSTI]

    Smolensky, Nicole Limunga

    2014-11-20T23:59:59.000Z

    Overexploitation of wildlife is a leading threat to biodiversity in tropical Africa. Effective management requires integrating information on the extent of exploitation, distribution, and status of exploited species. I explore how trade filters...

  5. North Africa

    SciTech Connect (OSTI)

    Nicod, M.A.

    1981-10-01T23:59:59.000Z

    The total area covered by petroleum rights in the six countries described in this paper increased by more than 17% in 1980 compared to 1979. Joint venture agreements were finalized for 19 blocks over 94,000 km/sup 2/ in the Algerian venture. Although official information is scarce for Algeria and Libya, seismic activity probably increased in 1980 compared to 1979. Exploration drilling activity increased with 121 wildcats drilled compared to 93 during the previous year. This effort led to 40 discoveries, a 34.5% success ratio. Chevron was especially successful in wildcatting, with 6 oil discoveries for 8 wells drilled in the interior basins of Sudan. One Moroccan discovery can be considered as a highlight: the BRPM Meskala 101 well in the Essaouira basin found an apparently large amount of gas in Triassic sandstones. This discovery deserves special attention, since the gas has been found in Triassic pays rather than in the usual Jurassic pays in the Essaouira basin. Oil production in North Africa decreased from about 13.5% in 1980, with about 3,405,000 barrels of oil per day compared to 3,939,500 barrels of oil per day in 1979. When oil output strongly decreased in Algeria (-16.4%) and Libya (-15.6%), Tunisian production peaked at 116,287 barrels of oil per day and Egypt production also peaked at 584,148 barrels of oil per day. Total gas production in 1980 strongly declined from 44%, mostly due to the decline of the Algerian gas production. 8 figures, 40 tables.

  6. Convex Approaches to Text Summarization

    E-Print Network [OSTI]

    Gawalt, Brian

    2012-01-01T23:59:59.000Z

    obama, reported violence, president, state, new, said, military, mr nigerian, nigerias, africa, kenya, angola, muslim,

  7. West Africa Emerges as Leading Region in Africa for Renewable...

    Open Energy Info (EERE)

    West Africa Emerges as Leading Region in Africa for Renewable Energy and Energy Efficiency Home > Groups > Clean and Renewable Energy Dc's picture Submitted by Dc(107) Contributor...

  8. Tropical Underdevelopment Jeffrey D. Sachs

    E-Print Network [OSTI]

    of mobilizing energy resources in tropical economies is emphasized as another significant contributor measure of economic development. Tropical and landlocked regions, by contrast ­ such as Bolivia, Chad

  9. Middle East & North Africa

    U.S. Energy Information Administration (EIA) Indexed Site

    West Bank and Gaza notes & data Yemen brief | data North Africa Algeria brief | data Egypt brief | data Libya brief | data Morocco notes & data Sudan and South Sudan brief |...

  10. Home Contact Us Help Site Map Index Search Combating Illegal Logging in Africa

    E-Print Network [OSTI]

    Home · Contact Us · Help · Site Map · Index · Search Combating Illegal Logging in Africa. Deforestation is almost exclusively concentrated in tropical regions. Illegal logging on public lands worldwide to a Ministerial Declaration and Actions targeted at combating illegal logging, associated illegal trade

  11. NRF Republic of South Africa

    E-Print Network [OSTI]

    Dintrans, Boris

    1 NRF Republic of South Africa GDRI Project Groupement de Recherche International International Africa called SACCLAP (Seasonal and Annual trends of Air quality at the South Africa scale and its impact Research Consortium Atmospheric Research in Southern Africa and Indian Ocean (ARSAIO) September 2008 #12

  12. ROYAL SOCIETY OF SOUTH AFRICA

    E-Print Network [OSTI]

    de Villiers, Marienne

    ROYAL SOCIETY OF SOUTH AFRICA http://www.royalsocietysa.org.za ACADEMY OF SCIENCE OF SOUTH AFRICA and distribution of butterflies in the atlas region (South Africa, Lesotho and Swaziland), thereby providing-ordinator of Africa's first butterfly atlas, entitled `The metamorphosis of the butterfly atlas' The Southern African

  13. CIGUATERA: TROPICAL FISH POISONING

    E-Print Network [OSTI]

    CIGUATERA: TROPICAL FISH POISONING Marine Biological I · ·' iw« L I B R >*· ** Y JUL 3 -1350 WOODS POISONING By William Arcisz, Bacteriologist, Formerly with the Fishery Research Laboratory Branch in which Fish Poisoning is Prevalento........... 3 Symptoms of Ciguatera ...... 00

  14. THE UNION OF SOUTH AFRICA SOUTH AFRICA ACT, 1909

    E-Print Network [OSTI]

    Sheridan, Jennifer

    THE UNION OF SOUTH AFRICA SOUTH AFRICA ACT, 1909 This Act was passed through both Houses of the Imperial Parliament exactly as it was forwarded after the South African Convention was held

  15. Country Energy Profile, South Africa

    SciTech Connect (OSTI)

    NONE

    1995-08-01T23:59:59.000Z

    This country energy profile provides energy and economic information about South Africa. Areas covered include: Economics, demographics, and environment; Energy situation; Energy structure; Energy investment opportunities; Department of Energy (DOE) programs in South Africa; and a listing of International aid to South Africa.

  16. Energy Efficiency Country Study: Republic Of South Africa

    E-Print Network [OSTI]

    Can, Stephane de la Rue du

    2014-01-01T23:59:59.000Z

    White Paper on South Africa’s Energy Policy is the firstfor Electricity. South Africa: Department of Energy. From2030 - IRP. From South Africa Department of Energy: http://

  17. Africa Adaptation Programme: Capacity Building Experiences-Improving...

    Open Energy Info (EERE)

    Dataset, Lessons learnedbest practices Website: www.undp.orgenvironmentlibrary.shtml Cost: Free UN Region: Eastern Africa, Middle Africa, Northern Africa, Southern Africa,...

  18. Interval eigenproblem in tropical and fuzzy algebra Tolerance eigenproblem in tropical algebra

    E-Print Network [OSTI]

    Mitchener, Paul

    Interval eigenproblem in tropical and fuzzy algebra Tolerance eigenproblem in tropical algebra Tolerance eigenproblem in fuzzy algebra Tolerance interval eigenvectors in tropical and fuzzy algebra Martin Workshop Birmingham, May 16, 2013 #12;Interval eigenproblem in tropical and fuzzy algebra Tolerance

  19. Michigan State University Cooperation with South Africa

    E-Print Network [OSTI]

    Liu, Taosheng

    Michigan State University Cooperation with South Africa: Forty Years of Partnerships African President of South Africa 1994-1999 #12;ii Michigan State University Cooperation with South Africa Table of Contents Introduction: Michigan and MSU Engagement in Africa and South Africa The Beginnings

  20. Rethinking the Wild Coast, South Africa

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Rethinking the Wild Coast, South Africa Eco-frontiers vs livelihoods in Pondoland Sylvain Guyot. Introduction to the Wild Coast of the Eastern Cape, South Africa.................... 35 3. TRALSO's involvement in Pondoland, South Africa.................................................... 101 1. Introduction

  1. Federal Institutions and the Democratic Transition: Lessons From South Africa

    E-Print Network [OSTI]

    Rubinfeld, Daniel

    2006-01-01T23:59:59.000Z

    of Southern Africa (1995), South Africa’s Nine Provinces:Human Development Profile, South Africa: Development Bank ofRegionalism in the New South Africa, Brookfield, U.S. :

  2. Combating tropical deforestation in Haiti

    SciTech Connect (OSTI)

    Pellek, R.

    1990-09-01T23:59:59.000Z

    This article outlines the findings of Tropical Forestry Action Plan (TFAP), which was part of an international initiative on tropical deforestation. Ten specific recommendations are addressed. Haiti has lost more than 97% of its forestland, so emphasis should be placed on replenishing the forest cover.

  3. Guayule rubber for South Africa

    SciTech Connect (OSTI)

    Not Available

    1981-06-17T23:59:59.000Z

    It is reported that Agtec together with South Africa's Council for Scientific and Industrial Research, is investigating the possibility of large-scale production of guayule. The rubber-yielding shrub grows in semi-arid climates and may be the source of a $35-million natural rubber industry in South Africa.

  4. Copyrighted Material What Is Tropical Ecology?

    E-Print Network [OSTI]

    Landweber, Laura

    Copyrighted Material What Is Tropical Ecology? Asking the question, What is tropical ecology? may seem akin to asking questions such as, Who is buried in Grant's tomb? Tropical ecology is the study of the ecology of tropical regions. But so what? Consider these questions: First, what is ecology? What are its

  5. Developing Africa's economy Doing the sums on Africa

    E-Print Network [OSTI]

    ). Governments in countries such as Ethiopia, Kenya, Tanzania and Uganda are co-operating closely with America almost 2,000 troops in the Combined Joint Task Force Horn of Africa, based in Panos Page 1 of 6Economist

  6. Tropical Cyclones and Climate Change

    E-Print Network [OSTI]

    Knutson, Thomas R.

    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 ...

  7. Tropical bases by regular projections

    E-Print Network [OSTI]

    Hept, Kerstin

    2007-01-01T23:59:59.000Z

    We consider the tropical variety $\\mathcal{T}(I)$ of a prime ideal $I$ generated by the polynomials $f_1, ..., f_r$ and revisit the regular projection technique introduced by Bieri and Groves from a computational point of view. In particular, we show that $I$ has a short tropical basis of cardinality at most $r + \\codim I + 1$ at the price of increased degrees, and we provide a computational description of these bases.

  8. Energy Efficient Refrigerators Incentive Program Options for South Africa

    E-Print Network [OSTI]

    Can, Stephane de la Rue du

    2014-01-01T23:59:59.000Z

    Covary, Unlimited Energy, South Africa and Paul Waide, WaideCA 94720 Unlimited Energy 2 South Africa Waide Strategicof refrigerator energy efficiency for South Africa. The

  9. africa lessons learned: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Renewable Energy Websites Summary: Ending Africa's Poverty Trap Africa's development crisis is unique. Not only is Africa the poorest this growth recovered ground lost during the...

  10. Energy Efficiency Country Study: Republic Of South Africa

    E-Print Network [OSTI]

    Can, Stephane de la Rue du

    2014-01-01T23:59:59.000Z

    White Paper on South Africa’s Energy Policy is the first2012a) ENERGY EFFICIENCY IN SOUTH AFRICA GENERAL POLICYENERGY EFFICIENCY IN SOUTH AFRICA . 17 G ENERAL POLICY

  11. The Dynamics and Predictability of Tropical Cyclones

    E-Print Network [OSTI]

    Sippel, Jason A.

    2010-01-15T23:59:59.000Z

    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...

  12. Midlevel Ventilation's Constraint on Tropical Cyclone Intensity

    E-Print Network [OSTI]

    Tang, Brian Hong-An

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

  13. A Ventilation Index for Tropical Cyclones

    E-Print Network [OSTI]

    Tang, Brian

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

  14. Estimating tropical cyclone precipitation risk in Texas

    E-Print Network [OSTI]

    Zhu, Laiyin

    This paper uses a new rainfall algorithm to simulate the long-term tropical cyclone precipitation (TCP) climatology in Texas based on synthetic tropical cyclones generated from National Center for Atmospheric Research/National ...

  15. Asian Clinical Tropical Medicine Bangkok, Thailand

    E-Print Network [OSTI]

    Minnesota, University of

    Asian Clinical Tropical Medicine Bangkok, Thailand July 21 ­ August 3, 2012 Join the Faculty, and the University of Minnesota as they co-host the fourth Asian Clinical Tropical Medical Course in beautiful Bangkok, Thailand. Healthcare providers with experience and/or a special interest in clinical tropical

  16. Africa; Expanding market creates more gas lines

    SciTech Connect (OSTI)

    Quarles, W.R.; Thiede, K.; Parent, L.

    1990-11-01T23:59:59.000Z

    The authors report on pipeline development activities in Africa. They discuss how a growing European market for gas has increased potential pipeline construction in Africa, especially for Algeria, Egypt, and Libya.

  17. Africa's Transport Infrastructure Mainstreaming Maintenance and...

    Open Energy Info (EERE)

    Mainstreaming Maintenance and Management Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Africa's Transport Infrastructure Mainstreaming Maintenance and Management...

  18. COOPENER Development and Energy in Africa

    E-Print Network [OSTI]

    DEA COOPENER Development and Energy in Africa Contract no. EIE/04/201/s07.43094 DEA Development and Energy in Africa Intelligent Energy ­ Europe (IEE) Type of action: COOPENER Key action: VKA11 is part of the COOPENER project "Development and Energy in Africa (DEA)" initiated on 1 May 2005

  19. 22 July 2014 Cape Town, South Africa

    E-Print Network [OSTI]

    Jarrett, Thomas H.

    22 July 2014 Cape Town, South Africa 20 years of democracy in SA, 25 years since the fall Social Sciences Building, Upper Campus The Delegation of the European Union to South Africa, as part of its EU Inspiring Thinkers Series, along with the German Embassy in South Africa and the University

  20. SCIENCE RESEARCH POLICY IN SOUTH AFRICA

    E-Print Network [OSTI]

    Blake, Edwin

    SCIENCE RESEARCH POLICY IN SOUTH AFRICA George F R Ellis A DISCUSSION DOCUMENT for the Royal Society of South Africa February 14, 2001 #12;i Preface This science policy discussion document has been written by Prof G F R Ellis (University of Cape Town) on behalf of the Royal Society of South Africa

  1. Environment and Land in Bushbuckridge, South Africa

    E-Print Network [OSTI]

    Environment and Land in Bushbuckridge, South Africa © 2002, Professor Robert Thornton Department of Anthropology University of the Witwatersrand, Johannesburg, South Africa Acknowledgements: Research), and by the Centre for Science Development, Human Sciences Research Council, Pretoria, South Africa. Printed:24 April

  2. The tropical double description method

    E-Print Network [OSTI]

    Allamigeon, Xavier; Goubault, Eric

    2010-01-01T23:59:59.000Z

    We develop a tropical analogue of the classical double description method allowing one to compute an internal representation (in terms of vertices) of a polyhedron defined externally (by inequalities). The heart of the tropical algorithm is a characterization of the extreme points of a polyhedron in terms of a system of constraints which define it. We show that checking the extremality of a point reduces to checking whether there is only one minimal strongly connected component in an hypergraph. The latter problem can be solved in almost linear time, which allows us to eliminate quickly redundant generators. We report extensive tests (including benchmarks from an application to static analysis) showing that the method outperforms experimentally the previous ones by orders of magnitude. The present tools also lead to worst case bounds which improve the ones provided by previous methods.

  3. Africa gaining importance in world LPG trade

    SciTech Connect (OSTI)

    Haun, R.R. [Purvin and Gertz Inc., Dallas, TX (United States); Otto, K.W.; Whitley, S.C. [Purvin and Gertz Inc., Houston, TX (United States)

    1997-05-12T23:59:59.000Z

    Major LPG projects planned or under way in Africa will increase the importance of that region`s presence in world LPG trade. Supplies will nearly double between 1995 and 2005, at which time they will remain steady for at least 10 years. At the same time that exports are leveling, however, increasing domestic demand for PG is likely to reduce export-market participation by Algeria, Nigeria, Egypt, and Libya. The growth of Africa`s participation in world LPG supply is reflected in comparisons for the next 15--20 years. Total world supply of LPG in 1995 was about 165 million metric tons (tonnes), of which Africans share was 7.8 million tonnes. By 2000, world supply will grow to slightly more than 200 million tonnes, with Africa`s share expected to increase to 13.2 million tonnes (6.6%). And by 2005, world LPG supply will reach nearly 230 million tonnes; Africa`s overall supply volumes by that year will be nearly 16.2 million tonnes (7%). World LPG supply for export in 1995 was on order of 44 million tonnes with Africa supply about 4 million tonnes (9%). By 2005, world export volumes of LPG will reach nearly 70 million tonnes; Africa`s share will have grown by nearly 10 million tonnes (14.3%).

  4. Africa: It's good news, bad news - again

    SciTech Connect (OSTI)

    Not Available

    1986-08-01T23:59:59.000Z

    This article presents the outlook for African petroleum. Observations include: Nigerian oil revenues will be $6-7 billion this year, down 50% from '84; Egyptian drillers are still going strong in the Western Desert and Gulf of Suez; Algeria is looking for natural gas buyers, and they have plenty of gas to sell-cheap; Even with new petroleum legislation, Tunisian production and reserves are falling; Libya's bozo leader is feeling the effects of falling oil revenues and falling bombs; Angola continues as a hot spot of activity with 42 successful oil strikes last year; Crude production jumped 29% in Cameroun last year with three new fields onstream; Congo is another West African winner due to major commitments by Elf and Agip.

  5. Influence of Tropical Tropopause Layer Cooling on Atlantic Hurricane Activity

    E-Print Network [OSTI]

    Solomon, Susan

    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 ...

  6. The Role of the Tropics in Abrupt Climate Changes

    SciTech Connect (OSTI)

    Fedorov, Alexey [Yale University] [Yale University

    2013-12-07T23:59:59.000Z

    Topics addressed include: abrupt climate changes and ocean circulation in the tropics; what controls the ocean thermal structure in the tropics; a permanent El Niño in paleoclimates; the energetics of the tropical ocean.

  7. IOL: Africa's big plans for biofuel Africa's big plans for biofuel

    E-Print Network [OSTI]

    IOL: Africa's big plans for biofuel Africa's big plans for biofuel By Clare Byrne Visitors to Madagascar, Senegal to South Africa, biofuels is the buzzword as African countries wake up to the possibility of using their vast spaces to grow crops that reduce their fossil fuel bill. Biofuels also carry

  8. Africa Infrastructure Country Diagnostic Documents: Interactive...

    Open Energy Info (EERE)

    Interactive MAP in PDF, all Countries Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Africa Infrastructure Country Diagnostic Documents: Interactive MAP in PDF, all...

  9. Biotechnology Adoption in Sub-Saharan Africa

    E-Print Network [OSTI]

    Midling, Michael B

    2011-01-01T23:59:59.000Z

    Nigeria lacks Berkeley Undergraduate Journal: Volume 24, Issue 3 Biotechnology Adoption in Sub-Saharan Africa Michael Baihua Midling regular energy,

  10. Africa Infrastructure Country Diagnostic Documents: ARCGIS Shape...

    Open Energy Info (EERE)

    toolslistarcgis-shape-files Transport Toolkit Region(s): Africa & Middle East Shapefiles for ArcGIS. Users can use the files for analysis of African nations' transport...

  11. CHEMOSTRATIGRAPHY OF THE PALEOPROTEROZOIC DUITSCHLAND FORMATION, SOUTH AFRICA: IMPLICATIONS FOR

    E-Print Network [OSTI]

    Kaufman, Alan Jay

    CHEMOSTRATIGRAPHY OF THE PALEOPROTEROZOIC DUITSCHLAND FORMATION, SOUTH AFRICA: IMPLICATIONS the only unequivocal glacial unit of this era in the Transvaal Basin, South Africa. Lithologic evidence Park 2006, Johannesburg, South Africa. [American Journal of Science, Vol. 301, March, 2001, P. 261

  12. Location and Institution SOUTH AFRICA -PRETORIA FORDHAM UNIVERSITY -UBUNTU PROGRAM

    E-Print Network [OSTI]

    Galles, David

    Location and Institution SOUTH AFRICA - PRETORIA FORDHAM UNIVERSITY - UBUNTU demographics, and South Africa. Students will also take a required module in Sociology holders need a student visa to enter and study in South Africa, which must

  13. SPRING 2012 STUDY ABROAD in CAPE TOWN, SOUTH AFRICA

    E-Print Network [OSTI]

    Alpay, S. Pamir

    SPRING 2012 STUDY ABROAD in CAPE TOWN, SOUTH AFRICA Want to find out studying the multiple concerns facing South Africa as it strives to become one. Take three academically engaging courses: The History & Politics of South Africa

  14. Oil and Natural Gas in Sub-Saharan Africa

    U.S. Energy Information Administration (EIA) Indexed Site

    Natural Gas in Sub-Saharan Africa August 1, 2013 2 Sub-Saharan Africa Source: U.S. Department of State Liquid Fuels Reserves and Production in Sub-Saharan Africa 3 4 Sub-Saharan...

  15. Carbon dioxide measurements in tropical east African biomes

    SciTech Connect (OSTI)

    Schnell, R.C.; Odh, S.A.; Njau, L.N.

    1981-06-20T23:59:59.000Z

    From January 1977 through May 1978 atmospheric CO/sub 2/ concentrations were measured hourly and/or continuously at bimonthly intervals over periods varying from 5 to 8 days at 10 different locations in Kenya, East Africa. During each of these periods, at least two, and in some cases five, vertical profile measurements of CO/sub 2/ concentrations were conducted above different biomes. A large diurnal CO/sub 2/ periodicity was observed over land, with daytime drawdowns to 322 ppm and nighttime buildups to more than 400 ppm observed in savannah regions. In and around tropical rain forests, drawdowns to 310 ppm and buildups to more than 400 ppm were regularly observed. On the higher reaches of Mount Kenya, the diurnal CO/sub 2/ cycle was considerably reduced in amplitude, with variations in the range of 2-6 ppm throughout the 16-month study period. On sunny days, the drawdown of CO/sub 2/ was measurable to heights of at least 4000 m above ground level. Other CO/sub 2/ measurements in air over the Indian Ocean (to distances of up to 450 km upwind of the coast) produced fairly consistent concentrations of about 328.5 ppm which did not fluctuate diurnally. The weekly mean CO/sub 2/ concentrations over Kenya appear to have a bimodal structure, with minima occurring in July and January. On the basis of the data collected during the study it appears likely that regular observations at a high-altitude station on Mount Kenya, either with flask sampling or continuous analyzer measurements, are likely to yield data useful for estimates of CO/sub 2/ concentration backgrounds and trends. Also, there is strong evidence that Mount Kenya would be a good location to measure large-scale interhemispheric CO/sub 2/ exchanges and provide a unique base from which to study the effects of the tropical biome on biogeochemical phenomena. 20 references, 12 figures, 2 tables.

  16. Post-apartheid transformations and population change around Dwesa-Cwebe nature reserve, South Africa

    E-Print Network [OSTI]

    Fay, Derick A

    2011-01-01T23:59:59.000Z

    and resettlement in South Africa’s Transkei. Ph.D. thesis.Cwebe nature reserves, South Africa. In: The rights andbased development on South Africa’s Wild Coast (eds. Palmer,

  17. aaa east africa: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Western Ontario (2011) 12;EAST AFRICA Recruitment and Building Denham, Graham 2 FAO Forestry Department Wood Energy WISDOM East Africa Renewable Energy Websites Summary: FAO -...

  18. africa central african: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    can help solve the infrastructure crisis in Africa by creating a 1 billion Clean Energy Fund for Africa to facilitate the transfer of clean technology, including renewable...

  19. ORIGINAL ARTICLE Mitigation needs adaptation: Tropical forestry

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ORIGINAL ARTICLE Mitigation needs adaptation: Tropical forestry and climate change Manuel R adapt to this change. This paper discusses how tropical forestry practices can contribute to maintaining Forestry Research, P.O. Box 6596 JKPWB, Jakarta 10065, Indonesia e-mail: m.guariguata@cgiar.org J. P

  20. Tropical Western Pacific CART Site

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2,EHSS A-Z SiteManhattan ProjectMayARM-00-005Tropical

  1. Embassy of France in South Africa

    E-Print Network [OSTI]

    Wagner, Stephan

    Embassy of France in South Africa PhD and Research Grants 2012 - 2013 The French Embassy bursary in South Africa - Supporting letter from supervisor in France To request application forms or any for South African researchers towards French institutions of higher education. The programme offers

  2. The Rothschild South Africa Foundation Scholarships

    E-Print Network [OSTI]

    Wagner, Stephan

    The Rothschild South Africa Foundation Scholarships The Rothschild Group has been at the centre, Rebekah Naidoo, Mandisa Mabunda, Londiwe Mahlambi Rothschild (South Africa) (Pty) Ltd is an Authorised FSP should Be a South African citizen Be a third year Commerce student, intending to study an honours or PGD

  3. Africa Aerosol Optical Depth Obtained From MISR

    E-Print Network [OSTI]

    Frank, Thomas D.

    OpticalDepth Central African Republic Chad Djibouti Egypt Ethiopia Libya Kenya Somalia Sudan Uganda #12;Southern Africa Ethiopia Libya Kenya Somalia Sudan Uganda #12;Southern Africa 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Mean Seasonal

  4. International Conference: Humanitarian Logistics: Networks for Africa

    E-Print Network [OSTI]

    Nagurney, Anna

    International Conference: Humanitarian Logistics: Networks for Africa http Agnes Nyaguthie, Oxfam-GB, Pretoria, South Africa The Important Role of Humanitarian Logistics 10 in Humanitarian Logistics: A Southern African Perspective 12:20-12:40 PM Discussion #12;1:00-2:30 PM Lunch 2

  5. Nitrogen and phosphorus dynamics in tropical soils of Mali, West Africa

    E-Print Network [OSTI]

    Blanton-Knewtson, Sharon Joy

    2000-01-01T23:59:59.000Z

    word of thanks belongs to my husband, Jeremy Knewtson. Jeremy is surely convinced that "in educational endeavors" was slipped into his marriage vows. Jeremy was involved in all phases of this project. He served as field and laboratory technician... Israel of North Carolina State University spent a week with us at Cinzana in September 1998. His inquiring mind and active pursuit of answers was an inspiration. Thank you to my parents, Rev. Jeffery and Judith Blanton, for teaching me that the fear...

  6. United Nations Climate Change Conference Durban, South Africa 2011

    E-Print Network [OSTI]

    Viola, Ronald

    United Nations Climate Change Conference Durban, South Africa 2011 COP17/CMP7 #12; The Conferences presents a unique opportunity for South Africa to promote and publicly initiate the transition to a green, President of South Africa Maite Nkoana-Mashabane, Minister of Foreign Affairs of South Africa President

  7. You are invited to the 8th Annual Africa Institute of South Africa's (AISA) Young Graduates and Scholars Conference

    E-Print Network [OSTI]

    Wagner, Stephan

    You are invited to the 8th Annual Africa Institute of South Africa's (AISA) Young Graduates, Botswana, Belgium, Kenya, and South Africa. The participants are from multidisciplinary backgrounds. Key Institute of South Africa's (AISA) Young Graduates and Scholars Conference (AYGS) University of Johannesburg

  8. Inaugural IEEE PES 2005 Conference and Exposition in Africa Durban, South Africa, 11-15 July 2005

    E-Print Network [OSTI]

    McCalley, James D.

    Inaugural IEEE PES 2005 Conference and Exposition in Africa Durban, South Africa, 11-15 July 2005 in the U.S., Canada, South Africa, Brazil, Venezuela, Russia, Korea, India and Japan. Also briefly, South Africa, South Korea, and India, and two lines in the 1000-1200 kV range in Russia and Japan

  9. Africa's natural gas: potentialities and letdowns

    SciTech Connect (OSTI)

    Baladian, K.

    1983-11-01T23:59:59.000Z

    Although Africa has experienced 10 times less hydrocarbon exploration than Western Europe, its proved gas reserves already amount to 220-223 trillion CF or 7% of world reserves, while Europe holds 6% or 167 TCF. Yet Africa marketed only 1.3 TCF in 1982 against Europe's 6.5 TCF. Because of the lack of domestic demand for gas, Africa flares up to 21% of its gas output. Algeria is the continent's primary gas consumer, with Egypt, Libya, and Nigeria trying to expand local gas markets. The vast majority of marketed African gas goes to Europe, either as gas sent through the Trans-Med pipeline or as LNG via tanker.

  10. Cloud to ground lightning in tropical cyclone: a study of 34 West Atlantic tropical cyclones from 1986-1996

    E-Print Network [OSTI]

    Coyne, John Michael

    2001-01-01T23:59:59.000Z

    Hurricane Tropical Storm Hurricane Hurricane Andrew Charley Arlene Floyd Alberto Chris Keith Allison Chantal Hugo Jerry Marco Ana Bob Fabian ?8 Andrew Danielle Earl Arlene Emily Alberto Beryl Gordon Allison Dean Erin Jerry Opal... Tropical Storm Hurricane Tropical Storm Hurricane Tropical Storm Hurricane Humcane Tropical Storm Hurricane Andrew Charley Arlene Floyd Alberto Chris Keith Allison Chantal Hugo Jerry Marco Ana Bob Fabian ?8 Andrew Danielle Earl...

  11. Midlevel ventilation's constraint on tropical cyclone intensity

    E-Print Network [OSTI]

    Tang, Brian Hong-An

    2010-01-01T23:59:59.000Z

    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 ...

  12. Tropical cyclone-ocea~ interactions Isaac Ginis

    E-Print Network [OSTI]

    Rhode Island, University of

    Hurricane Andrew in 1992 exceeded 60 with nearly $30 billion damage. Tropical cyclone modeling efforts over of hurricane track predictions over the last 30 years, in contrast there has been no perceptible improvement

  13. The multiple vortex nature of tropical cyclogenesis

    E-Print Network [OSTI]

    Sippel, Jason Allen

    2005-02-17T23:59:59.000Z

    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...

  14. Elements of tropical Pacific decadal variability

    E-Print Network [OSTI]

    Fuckar, Neven-Stjepan

    2003-01-01T23:59:59.000Z

    of the period from 1965 to 1999. Model results show Pacific basin decadal changes, including the prominent 1976-77 climate shift, in agreement with previous research. The reanalysis indicates an evolution intrinsic to the tropical Pacific which propagates...

  15. The Namibian Transport and Energy System: Dependency and Disengagement from South Africa

    E-Print Network [OSTI]

    Mwase, Ngila

    1988-01-01T23:59:59.000Z

    dependent on South Africa for her energy supplies atand Energy System: Dependency and Disengagement from South AfricaSouth Africa provides about 12 percent of Namibian energy

  16. Present at the Creation: Founding Party Dominance in South Africa and Beyond

    E-Print Network [OSTI]

    Rosenberg, Mark Yaron

    2012-01-01T23:59:59.000Z

    Afrobarometer. 2002. South Africa, Round 2. Access online:data __________. 2004. South Africa, Round 2.5. Accessdata __________. 2006. South Africa, Round 3. Access online:

  17. Creating New Leaders: Youth Involvement in Community Activism in South Africa

    E-Print Network [OSTI]

    Reed, Amber R

    2011-01-01T23:59:59.000Z

    July 27, 2009, Cape Town, South Africa. 23 Sipho,participant, July 27, 2009, Cape Town, South Africa. 245, 2009, Qumbu, South Africa. 25 Paki, youth participant,

  18. Sequence stratigraphic development of the Neoarchean Transvaal carbonate platform, Kaapvaal Craton, South Africa

    E-Print Network [OSTI]

    Sumner, Dawn Y.; Beukes, Nicolas J

    2006-01-01T23:59:59.000Z

    Griqualand West Sequence, South Africa; implications forUniversity, Johannesburg, South Africa, 326pp. Duane, M.J. ;Transvaal Sequence, South Africa. Economic Geology, 86,

  19. An Overview of Accountability Mechanisms in Public - Private Partnerships in South Africa

    E-Print Network [OSTI]

    Fombad, Madeleine

    2013-01-01T23:59:59.000Z

    accessed March 1, 2013). South Africa, Republic of. NationalGovernment Printer. South Africa, Republic of. Nationalattachments/03475_pubfinmanact1.pdf South Africa, Republic

  20. CHARACTERIZATION OF CLOUDS IN TITAN'S TROPICAL ATMOSPHERE

    SciTech Connect (OSTI)

    Griffith, Caitlin A.; Penteado, Paulo [Department of Planetary Sciences, University of Arizona, Tucson, AZ 85719 (United States); Rodriguez, Sebastien [Laboratoire AIM, Universite Paris 7/CNRS/CEA-Saclay, DSM/IRFU/SAp (France); Le Mouelic, Stephane [Laboratoire de Planetologie et Geodynamique, CNRS, UMR-6112, Universite de Nantes, 44000 Nantes (France); Baines, Kevin H.; Buratti, Bonnie; Sotin, Christophe [Jet Propulsion Laboratory, Pasadena, CA 91109 (United States); Clark, Roger [U.S. Geological Survey, Denver, CO 80225 (United States); Nicholson, Phil [Department of Astronomy, Cornell University, Ithaca, NY (United States); Jaumann, Ralf [Institute of Planetary Exploration, Deutsche Zentrum, fuer Luft- und Raumfahrt (Germany)

    2009-09-10T23:59:59.000Z

    Images of Titan's clouds, possible over the past 10 years, indicate primarily discrete convective methane clouds near the south and north poles and an immense stratiform cloud, likely composed of ethane, around the north pole. Here we present spectral images from Cassini's Visual Mapping Infrared Spectrometer that reveal the increasing presence of clouds in Titan's tropical atmosphere. Radiative transfer analyses indicate similarities between summer polar and tropical methane clouds. Like their southern counterparts, tropical clouds consist of particles exceeding 5 {mu}m. They display discrete structures suggestive of convective cumuli. They prevail at a specific latitude band between 8 deg. - 20 deg. S, indicative of a circulation origin and the beginning of a circulation turnover. Yet, unlike the high latitude clouds that often reach 45 km altitude, these discrete tropical clouds, so far, remain capped to altitudes below 26 km. Such low convective clouds are consistent with the highly stable atmospheric conditions measured at the Huygens landing site. Their characteristics suggest that Titan's tropical atmosphere has a dry climate unlike the south polar atmosphere, and despite the numerous washes that carve the tropical landscape.

  1. Financing Clean Energy Infrastructure in Africa | Department...

    Broader source: Energy.gov (indexed) [DOE]

    Upon arrival to Addis Ababa, Ethiopia, for the U.S.-Africa Energy Ministerial, U.S. Secretary of Energy Ernest Moniz is greeted on the tarmac by Ethiopian Minister of Water and...

  2. On the connection between continental-scale land surface processes and the tropical climate in a coupled ocean-atmosphere-land system

    SciTech Connect (OSTI)

    Ma, Hsi-Yen; Mechoso, C. R.; Xue, Yongkang; Xiao, Heng; Neelin, David; Ji, Xuan

    2013-11-15T23:59:59.000Z

    The impact of global tropical climate to perturbations in land surface processes (LSP) are evaluated using perturbations given by different LSP representations of continental-scale in a global climate model that includes atmosphere-ocean interactions. One representation is a simple land scheme, which specifies climatological albedos and soil moisture availability. The other representation is the more comprehensive Simplified Simple Biosphere Model, which allows for interactive soil moisture and vegetation biophysical processes. The results demonstrate that LSP processes such as interactive soil moisture and vegetation biophysical processes have strong impacts on the seasonal mean states and seasonal cycles of global precipitation, clouds, and surface air temperature. The impact is especially significant over the tropical Pacific. To explore the mechanisms for such impact, different LSP representations are confined to selected continental-scale regions where strong interactions of climate-vegetation biophysical processes are present. We find that the largest impact is mainly from LSP perturbations over the tropical African continent. The impact is through anomalous convective heating in tropical Africa due to changes in the surface heat fluxes, which in turn affect basinwide teleconnections in the Pacific through equatorial wave dynamics. The modifications in the equatorial Pacific climate are further enhanced by strong air-sea coupling between surface wind stress and upwelling, as well as effect of ocean memory. Our results further suggest that correct representations of land surface processes, land use change and the associated changes in the deep convection over tropical Africa are crucial to reducing the uncertainty when performing future climate projections under different climate change scenarios.

  3. JamesCookUniversity (JCU) es la principal universidad australiana en la zona tropical.JCU ofrece excelencia

    E-Print Network [OSTI]

    selva tropical, calentamiento global, turismo, medicina tropical y cuidado de la salud pública. JCU es

  4. Welcome to the Third World Network-Africa (TWN-Africa) Blog

    E-Print Network [OSTI]

    Welcome to the Third World Network- Africa (TWN-Africa) Blog September 24, 2008 15:25:42 PM Press By administrator Dr.Yao Graham (left) and development economist Dr.Nii Moi Thompson (right) @ launch of UNCTAD... administrator Male Category unctadxii (2) csoforum (1) cso forum (1) extractives (1) unctad xii radio discuss

  5. Seasonal shift in the foraging niche of a tropical avian resident: resource competition at work?

    E-Print Network [OSTI]

    Jedlicka, J A; Greenberg, R; Perfecto, I; Philpottt, S M; Dietsch, T V

    2006-01-01T23:59:59.000Z

    and migrant birds in Campeche, Mexico. Tropical Ecology 22:a dry tropical forest in Campeche, Mexico and found that

  6. HealtH researcH in soutH africa

    E-Print Network [OSTI]

    Rambaut, Andrew

    HealtH researcH in soutH africa the africa centre for Health and Population studies investigating the health problems that affect south africa, africa and the rest of the world UKZN (Durban) · · Agincourt Centre · Wellcome Trust-funded research in South Africa SOUTH AFRICA #12;Wellcome Trust | Health research

  7. Ocean dynamics and thermodynamics in the tropical Indo- Pacific region

    E-Print Network [OSTI]

    Drushka, Kyla

    2011-01-01T23:59:59.000Z

    Pacific Oceans . . . . . . . . . . . . . . . . . . . . . . . . . . . . .in the eastern tropical Pacific Ocean associated with thethe western equatorial Pacific Ocean. J. Geophys. Res. , 96,

  8. Hurricane Earl, September 1, 2010/NOAA Tropical Cyclones

    E-Print Network [OSTI]

    Fang, Yuguang "Michael"

    Hurricane Earl, September 1, 2010/NOAA Tropical Cyclones A PREPAREDNESS GUIDE U.S. DEPARTMENT, 6 of which became hurricanes East Pacific Ocean: 15 tropical storms, 8 of which became hurricanes Central Pacific Ocean: 4 tropical storms, 2 of which became hurricanes Over a typical 2-year period, the U

  9. Species Loss and Aboveground Carbon Storage in a Tropical Forest

    E-Print Network [OSTI]

    Bunker, Daniel E.

    of tropical tree species on carbon storage by simulating 18 possible extinction scenarios within a well-studied 50-hectare tropical forest plot in Panama, which contains 227 tree species. Among extinction as well as the size and longevity of tropical trees. Instead, we simulated species extinctions

  10. LONDON SCHOOL OF HYGIENE & TROPICAL TERMS & CONDITIONS OF BUSINESS

    E-Print Network [OSTI]

    Maizels, Rick

    LONDON SCHOOL OF HYGIENE & TROPICAL MEDICINE TERMS & CONDITIONS OF BUSINESS October 2003 #12 in accordance with these Terms and Conditions; · "School" shall mean the London School of Hygiene & Tropical of Hygiene & Tropical Medicine · "School Purchasing Officer" shall mean the Postholder, Mr Keith Flanders

  11. Malaria Centre London School of Hygiene & Tropical Medicine

    E-Print Network [OSTI]

    Maizels, Rick

    Malaria Centre London School of Hygiene & Tropical Medicine Keppel Street, London, WC1E 7HT, UK October 2014 MalariaCentreReport2012-14LondonSchoolofHygiene&TropicalMedicine #12;#12;Contents Director;2 Director's message London School of Hygiene & Tropical Medicine Despite being preventable and treatable

  12. Investigating Tropical Deforestation Using Two-Stage Spatially Misaligned

    E-Print Network [OSTI]

    Silander Jr., John A.

    Investigating Tropical Deforestation Using Two-Stage Spatially Misaligned Regression Models Deepak Deforestation in the tropics has been a major concern in conservationscience for more than 20 years. Estimates of tropical deforestation over the past few decades have shown an alarming accelerationin forest lost. Concern

  13. ONGOING RESEARCH PROJECTS Model of tropical forest structure and dynamics

    E-Print Network [OSTI]

    Hill, Jeffrey E.

    ONGOING RESEARCH PROJECTS Model of tropical forest structure and dynamics There is a need canopy structure and partitions dynamic rates for a tropical forest on Barro Colorado Island (BCI structure and partitions dynamic rates in a tropical forest. In Review. Journal of Ecology. #12;PPA model

  14. The Relation Between Dry Vortex Merger and Tropical Cyclone Genesis over the Atlantic Ocean

    SciTech Connect (OSTI)

    Chen, Shu-Hua; Liu, Yi-Chin

    2014-10-27T23:59:59.000Z

    A strong, convective African tropical disturbance has a greater chance to develop into a Tropical 23 Depression (TD) if it merges with a shallow, dry vortex (D-vortex) from the north of the African 24 easterly jet (AEJ) after leaving the western coast. Using 11-year reanalysis data we found that the 25 western tip of a vortex strip at northwestern Africa can serve as dry vortices for the D-vortex 26 merger if it shifts southward. Another source of D-vortices is the westward propagating lows 27 along the southern edge of the Saharan air. The D-vortex merger process occurred for 63.5% of 28 tropical cyclones (TCs) or developing systems over the main development region of the Atlantic 29 Ocean, while it occurred for 54% of non-developing systems. TC genesis could be largely 30 controlled by the large-scale environment, but the differences in characteristics of vortices 31 associated with the D-vortex merger between developing and non-developing systems could 32 potentially help determine their destinies; in general, developing systems were dominated by a 33 more intense and moist south vortex, while non-developing systems were dominated by a north 34 vortex which was more intense, drier, and larger in size. Analysis also shows that 74% of intense 35 developing systems were involved with the D-vortex merger process. More attention needs to be 36 paid to the D-vortex merger and the characteristics of those vortices as they can play significant 37 roles or have a strong indication in Atlantic TC genesis.

  15. UNU-IAS Policy Report Biofuels in Africa

    E-Print Network [OSTI]

    UNU-IAS Policy Report Biofuels in Africa Impacts on Ecosystem Services, Biodiversity and Human Well-being #12;#12;UNU-IAS Policy Report Biofuels in Africa Impacts on Ecosystem Services, Biodiversity and Human........................................................................................................... 9 1.2 Biofuel drivers, feedstocks and policies in Africa

  16. RESILIENCE IN HOME-BASED CAREGIVERS IN LIMPOPO, SOUTH AFRICA

    E-Print Network [OSTI]

    Omiecinski, Curtis

    I 188 RESILIENCE IN HOME-BASED CAREGIVERS IN LIMPOPO, SOUTH AFRICA Theresa M. Mieh, McNair Scholar-based caregivers (HBCs) in Limpopo South Africa. The PEN-3 model is used to investigate cultural influences on care cultures. Data were gathered from participants' responses in 4 focus group interviews held in South Africa

  17. Ganoderma in South Africa Article prepared by Dr Martin Coetzee

    E-Print Network [OSTI]

    Ganoderma in South Africa Article prepared by Dr Martin Coetzee Ganoderma is a genus of wood-wide. In South Africa, a number of Ganoderma species have been reported from various indigenous and introduced linked with this disease in South Africa are G. lucidum and G. applinatum. It is known, however

  18. An early date for cattle from Namaqualand, South Africa

    E-Print Network [OSTI]

    An early date for cattle from Namaqualand, South Africa: implications for the origins of herding did cattle come to South Africa? Radiocarbon dates on a newly found cow horn indicates a time, the authors favour immigrants moving along a western route through Namibia. Keywords: South Africa

  19. Study in South Africa and Lesotho A Curriculum Development Project

    E-Print Network [OSTI]

    Viola, Ronald

    Teachers Study in South Africa and Lesotho A Curriculum Development Project Integrating Visual Arts about the cultures and history of the Basotho people of southern Africa Participate in seminars-Hays award, graduate credit and/or CEUs Visit non-malarial and low risk areas in southern Africa and enjoy

  20. NBER WORKING PAPER SERIES AFRICA'S LAGGING DEMOGRAPHIC TRANSITION

    E-Print Network [OSTI]

    NBER WORKING PAPER SERIES AFRICA'S LAGGING DEMOGRAPHIC TRANSITION: EVIDENCE FROM EXOGENOUS IMPACTS;Africa's Lagging Demographic Transition: Evidence from Exogenous Impacts of Malaria Ecology February 2007 JEL No. I1,J11 ABSTRACT Much of Africa has not yet gone through a "demographic transition

  1. CHINA-AFRICA RELATIONS GOVERNANCE, PEACE AND SECURITY

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    CHINA-AFRICA RELATIONS GOVERNANCE, PEACE AND SECURITY Editors Mulugeta Gebrehiwot Berhe and Liu Hongwu #12;CHINA-AFRICA RELATIONS GOVERNANCE, PEACE AND SECURITY Editors Mulugeta Gebrehiwot Berhe of China China's Evolving Policy towards Peace and Security in Africa: Constructing a new paradigm

  2. MalariaCentreReport2010-11LondonSchoolofHygiene&TropicalMedicine London School of Hygiene and Tropical Medicine

    E-Print Network [OSTI]

    Maizels, Rick

    MalariaCentreReport2010-11LondonSchoolofHygiene&TropicalMedicine London School of Hygiene Dessens; DTM&H students in laboratory 24 February 2011. Copyright London School of Hygiene & Tropical Publications 114 Members 130 Abbreviations 134 #12;2Director's Message London School of Hygiene & Tropical

  3. Information Technology Australia China India Italy Malaysia South Africa CRICOS provider: Monash University 00008CAustralia China India Italy Malaysia South Africa CRICOS provider: Monash University 00008CAustralia China India Italy Malaysia South Africa

    E-Print Network [OSTI]

    Albrecht, David

    Information Technology Australia China India Italy Malaysia South Africa CRICOS provider: Monash University 00008CAustralia China India Italy Malaysia South Africa CRICOS provider: Monash University 00008CAustralia China India Italy Malaysia South Africa CRICOS provider: Monash University

  4. Economic Research Southern Africa (ERSA) is a research programme funded by the National Treasury of South Africa.

    E-Print Network [OSTI]

    Maranas, Costas

    of South Africa. The views expressed are those of the author(s) and do not necessarily represent those Europe, and the less likely it will be in Central and South Asia or Sub-Saharan Africa. Finally, weEconomic Research Southern Africa (ERSA) is a research programme funded by the National Treasury

  5. Climate Science: Tropical Expansion by Ocean Swing

    SciTech Connect (OSTI)

    Lu, Jian

    2014-04-01T23:59:59.000Z

    The tropical belt has become wider over the past decades, but climate models fall short of capturing the full rate of the expansion. The latest analysis of the climate simulations suggests that a long-term swing of the Pacific Decadal Oscillation is the main missing cause.

  6. Oceanic Origins of Southwest Tropical Atlantic Biases

    E-Print Network [OSTI]

    Xu, Zhao

    2013-05-03T23:59:59.000Z

    Oceanic General Circulation Model POP Parallel Ocean Program ROMS Regional Ocean Modeling System SEC South Equatorial Current SECC South Equatorial Counter Current SETA Southeast Tropical Atlantic SEUC South Equatorial UnderCurrent SLP Sea Level... SST bias ................................................................................... 5 1.3.2 SST bias in SETA ...................................................................................... 8 1.4 Objectives and Approach...

  7. 6, 1064910672, 2006 Extinction in tropical

    E-Print Network [OSTI]

    (Stephens et al., 1990). The radiative influence of a given cirrus cloud depends mostly on the delicate balance between its albedo effect and its greenhouse effect. The dominant effect is globally unknownACPD 6, 10649­10672, 2006 Extinction in tropical ice clouds from lidar, Nephelometer V. Noel et al

  8. Energy, Industry, and Transport in South-Central Africa’s History

    E-Print Network [OSTI]

    Mavhunga, Clapperton Chakanets

    2014-01-01T23:59:59.000Z

    Energy must be seen in interaction with transportation and industry in order for its role in South-Central Africa to be fully understood. All three—energy, industry, and transportation—are themselves always socialized and ...

  9. MSU at Work in Africa: Cultural Documentation

    E-Print Network [OSTI]

    are strongly committed to documenting, preserving, and making accessible the continent's cultural heritage and historical record. Africa's historic and living cultures are rich and very diverse-- from immovable historic' identifying their cultural heritage. Safeguarding and making accessible the artifacts, oral histories

  10. Legal improvements brighten North Africa production outlook

    SciTech Connect (OSTI)

    NONE

    1997-05-12T23:59:59.000Z

    North Africa`s three main oil producing countries soon will reap benefits of past moves by their governments to encourage investment by international companies. Production of crude oil and natural gas in Algeria, Egypt, and Libya is ready to increase from suppressed levels of the recent past, says International Energy Agency, Paris. The gains are possible despite political risks, total reserves accounting for only 4% of the world`s crude reserves, and oil prices well below levels of the 1980s, when the countries` flow rates peaked. The reason: producing oil in North Africa is profitable. In a recent study entitled North Africa Oil and Gas, IEA attributes the bright production outlook to improvements that the countries` governments have made in the past decade to hydrocarbon laws and the fiscal terms they offer international investors. According to announced plans, the three countries` combined capacity to produce crude oil will rise 18% by the year 2000 to 3.65 million b/d, and a further gain of 700,000 b/d is possible. IEA expects production capacity for natural gas to increase 50% from its 1995 level by 2000 to a combined 139.4 billion cu m/year. This paper discusses production capacities, Algeria`s record, improvements in Egypt, and Libya`s changes.

  11. Information Technology Australia China India Italy Malaysia South Africa CRICOS provider: Monash University 00008CAustralia China India Italy Malaysia South Africa CRICOS provider: Monash University 00008C

    E-Print Network [OSTI]

    Albrecht, David

    Technology Australia China India Italy Malaysia South Africa CRICOS provider: Monash University 00008CAustralia China India Italy Malaysia South Africa CRICOS provider: Monash University 00008C General; Australia China India Italy Malaysia South Africa CRICOS provider: Monash University 00008CAustralia

  12. ADVANCED TROPICAL METEOROLOGY: METR 5453.001 T R 11:30-12:45, NWC 5820

    E-Print Network [OSTI]

    Droegemeier, Kelvin K.

    and their limitations. - Why study the tropics separately? Examples of major tropical circulations on weather. - Easterly waves. 5. Tropical Cyclones What are they? How do they differ from extratropical cyclones cyclones: operations and research. - Predictability aspects of tropical cyclones. - Tropical cyclones

  13. The Economic Impact of The Coca-Cola System on South Africa

    E-Print Network [OSTI]

    Almor, Amit

    The Economic Impact of The Coca-Cola System on South Africa Prepared by Division of Research March 2005 SOUTH AFRICA SOUTH AFRICA #12;The Economic Impact of The Coca-Cola System on South Africa-Cola system's economic impact on South Africa. Conducted during 2003-04, the study represents a wide

  14. APORDE -African Programme on Rethinking Development Economics 5 -19 May 2011, Johannesburg, South Africa

    E-Print Network [OSTI]

    Wagner, Stephan

    Africa Supported by the Department of Trade and Industry of South Africa (the dti), the French Development Agency (AFD), and the French Embassy in South Africa, with the French Institute of South Africa Development Economics APORDE) will be held in Johannesburg (South Africa) from the 5th to the 19th of May 2011

  15. Insights into the historical construction of species-rich Mesoamerican seasonally dry tropical forests: the diversification

    E-Print Network [OSTI]

    Olson, Mark

    Insights into the historical construction of species-rich Mesoamerican seasonally dry tropical, Mesoamerica, niche conservatism, seasonally dry tropical forests. Summary · Mesoamerican arid biomes epitomize the vast species richness of Meso- american seasonally dry tropical forests (SDTFs), and to evaluate

  16. Carbon sequestration potential of tropical pasture compared with afforestation in Panama

    E-Print Network [OSTI]

    Potvin, Catherine

    Carbon sequestration potential of tropical pasture compared with afforestation in Panama S E B) to estimate the carbon sequestration potential of tropical pasture compared with afforestation; and (3 show the potential for considerable carbon sequestration of tropical afforestation and highlight

  17. GCM simulation of the tropical mixing barriers in the lower stratosphere

    E-Print Network [OSTI]

    Hu, Yongyun

    1996-01-01T23:59:59.000Z

    The high-resolution SKYHI general circulation model is used to simulate tropical mixing behavior and to investigate mixing barriers in the tropical lower stratosphere. Results show that during the solstitial seasons a tropical weak-mixing zone...

  18. australian tropical savannas: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    results in warmer and drier climate of tropical savannas increases temperatures and wind speeds and decreases precipitation and relative humidity Jackson, Robert B. 2...

  19. Ocean Barrier Layers’ Effect on Tropical Cyclone Intensification

    SciTech Connect (OSTI)

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

    2012-09-04T23:59:59.000Z

    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.

  20. Energy saving strategies with personalized ventilation in tropics

    E-Print Network [OSTI]

    Schiavon, Stefano; Melikov, Arsen; Chandra Sekhar, Chandra Sekhar

    2010-01-01T23:59:59.000Z

    of a personalized ventilation system in the tropics, in:edged-mounted task ventilation system, Indoor Air, Vol. 14 (a chair-based personalized ventilation system, Building and

  1. Clarence Strait Tidal Energy Project, Tenax Energy Tropical Tidal...

    Open Energy Info (EERE)

    Test Centre, Jump to: navigation, search 1 Retrieved from "http:en.openei.orgwindex.php?titleClarenceStraitTidalEnergyProject,TenaxEnergyTropicalTidalTestCentre,&o...

  2. Characterization of Trapped Lignin-Degrading Microbes in Tropical...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to cellulose, which is critical for biofuels production. Tropical rain forest soils in Puerto Rico are characterized by frequent anoxic conditions and fluctuating redox,...

  3. "A New Paradigm for Secondary Eyewall Formation in Tropical Cyclones...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Road Princeton, NJ 08540-6649 "A New Paradigm for Secondary Eyewall Formation in Tropical Cyclones", Chun-Chieh Wu (National Taiwan University) Contact Information Website: Website...

  4. TROPICAL DEFORESTATION MODELLING: A COMPARATIVE ANALYSIS OF DIFFERENT PREDICTIVE APPROACHES.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    TROPICAL DEFORESTATION MODELLING: A COMPARATIVE ANALYSIS OF DIFFERENT PREDICTIVE APPROACHES-time discretisation; Remote Sensing; Neural Networks; Markov Chains; MCE; Dinamica; Risk management; Deforestation

  5. The Relationship Between Unemployment and Earnings Inequality in South Africa

    E-Print Network [OSTI]

    Tregenna, Fiona

    1 THE RELATIONSHIP BETWEEN UNEMPLOMENT AND EARNINGS INEQUALITY IN SOUTH AFRICA FIONA TREGENNA Faculty of Economics, University of Cambridge ABSTRACT Unemployment and earnings inequality have moved closely together in South Africa... in recent years, suggesting that there may not be a trade-off between them as the literature generally suggests. This article explores the relationship between unemployment and earnings inequality in South Africa, specifically investigating the extent...

  6. Oil and gas developments in central and southern Africa in 1986

    SciTech Connect (OSTI)

    Hartman, J.B.

    1987-10-01T23:59:59.000Z

    Fewer wells and less footage were drilled in 1986 compared to 1985. Total drilling decreased by 23% as 217 wells were completed compared to 289 in 1985. Footage drilled during 1986 declined by 52%; about 1.3 million ft were drilled compared to about 2.7 million feet in 1985. The success rate for exploration wells of 34% during 1986 is due to considerably higher success rates in Nigeria and Gabon compared to 1985. Significant discoveries were made in Nigeria, Angola, Congo, and Gabon. Seismic acquisition was the major geophysical activity during 1986. Seismic activity (2-D and 3-D) decreased by 12% to about 230 crew-months. Total 2-D seismic kilometers recorded increased by 26% to about 82,000 km due to significant 2-D marine seismic activity in Nigeria and Angola. Surface geology, photogeology, geochemistry, gravimetry, and aeromagnetic surveys decreased compared to 1985. Total oil production in 1986 was 834 million bbl (about 2.2 million BOPD), an increase of 2%, with the most significant increased in Cameroon and Angola. The production share of OPEC countries (Nigeria and Gabon) versus non-OPEC countries increased to 72% in 1986 compared to 67% in 1985. 32 figures, 5 tables.

  7. africa case study: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Climate Change Mitigation Projects: Summary of Findings from Case Studies in Brazil, India, Mexico, and South Africa University of California eScholarship Repository Summary:...

  8. africa case studies: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Climate Change Mitigation Projects: Summary of Findings from Case Studies in Brazil, India, Mexico, and South Africa University of California eScholarship Repository Summary:...

  9. africa methodology findings: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    University of California eScholarship Repository Summary: for Development: Climate Change Policy for Africa. AfricanCLIMATE CHANGE MITIGATION SUMMARY PROJECTS: OF FINDINGS FROM...

  10. Making Africa's Power Sector Sustainable: An Analysis of Power...

    Open Energy Info (EERE)

    Africa sustainable. Furthermore, it proposes options that could enhance the sustainability of the power sector. The study adds value to the limited but growing literature on...

  11. apartheid south africa: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and recognize claims for self-determination by Indigenous Foster, Laura A. 2011-01-01 424 Technology assessment of renewable energy sustainability in South Africa. Open Access...

  12. age south africa: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and recognize claims for self-determination by Indigenous Foster, Laura A. 2011-01-01 413 Technology assessment of renewable energy sustainability in South Africa. Open Access...

  13. area south africa: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and recognize claims for self-determination by Indigenous Foster, Laura A. 2011-01-01 452 Technology assessment of renewable energy sustainability in South Africa. Open Access...

  14. South Africa-Enhancing Capacity for Low Emission Development...

    Open Energy Info (EERE)

    "EC-LEDS" Retrieved from "http:en.openei.orgwindex.php?titleSouthAfrica-EnhancingCapacityforLowEmissionDevelopmentStrategies(EC-LEDS)&oldid698590" Category:...

  15. Product Quality Assurance for Off-Grid Lighting in Africa

    E-Print Network [OSTI]

    Mills, Evan; World Bank

    2008-01-01T23:59:59.000Z

    for Modern Lighting Product Quality Assurance for Off-GridLighting Africa Product Quality Assurance Workshop AirlieLighting Initiative Quality Certification Institute United

  16. Creating an Evergreen Agriculture in Africa: for Food Security...

    Open Energy Info (EERE)

    in Africa to channel carbon offset payments from developed countries to stimulate more carbon sequestration in African farming systems. As the African nations develop their...

  17. africa estimating hiv: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    that measured adherence to ART and its predictors in the past decade. Findings. Against expectations, sub-Saharan Africa patients have similar or higher adherence levels compared...

  18. Africa - Technical Potential of Solar Energy to Address Energy...

    Open Energy Info (EERE)

    Africa - Technical Potential of Solar Energy to Address Energy Poverty and Avoid GHG Emissions Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Technical Potential of...

  19. africa health systems: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Page Topic Index 1 MSU at Work in Africa: Improving Health Physics Websites Summary: the health care systems involved. MSU's Involvement and Accomplishment "Long-term presence on...

  20. africa electronic resource: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Water resource management in West Africa is often a complicated process due to inadequate resources, climatic Environmental Sciences and Ecology Websites Summary: in the Volta...

  1. The production of consumption: addressing the impact of mineral mining on tuberculosis in southern Africa

    E-Print Network [OSTI]

    Basu, Sanjay; Stuckler, David; Gonsalves, Gregg; Lurie, Mark

    2009-01-01T23:59:59.000Z

    of South Africa: Department of Minerals and Energy; SouthSouth Africa, various departments, ranging from the Minerals and Energyof Minerals and Energy: Mining and minerals in South Africa:

  2. Breaking news: Biological control agent for Thaumastocoris peregrinus to be released in South Africa

    E-Print Network [OSTI]

    milestone in terms of ensuring sustainable plantation forestry in South Africa was safe to release in South Africa as a biological control agent. The release strategy for C. noackae in South Africa must still be finalized. But

  3. The Effect of Labor Migration and Remittances on Children's Education Among Blacks in South Africa

    E-Print Network [OSTI]

    Lu, Yao; Treiman, Donald J.

    2007-01-01T23:59:59.000Z

    1995-1998. ” Pp. 83-94 in Measuring Poverty in South Africa.Pretoria: Statistics South Africa. Carter, M.R. and J.and Class in Rural South Africa. ” World Development 27(1):

  4. TESTING VIRGINITY: HIV/AIDS, MODERNITY & ETHNICITY IN POST-APARTHEID SOUTH AFRICA

    E-Print Network [OSTI]

    Leak, Tia-Nicole

    2012-01-01T23:59:59.000Z

    1964. Davenport, T.R.H. South Africa: a modern history. 4thIn The Oxford History of South Africa, edited by Monica L.Gilliomee. The shaping of South Africa 1652?1840. Cape Town:

  5. Population structure of the fungal pathogen Holocryphia eucalypti in Australia and South Africa

    E-Print Network [OSTI]

    Population structure of the fungal pathogen Holocryphia eucalypti in Australia and South Africa, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria 0002, South Africa. B Institute, University of Pretoria, Pretoria 0002, South Africa. C School of Biological Sciences

  6. Author Addresses: J.A. van Biljon, School of Computing, University of South Africa, P O Box 392, UNISA, 0003, South Africa; vbiljja@unisa.ac.za

    E-Print Network [OSTI]

    Williamson, John

    Addresses: J.A. van Biljon, School of Computing, University of South Africa, P O Box 392, UNISA, 0003, South Africa; vbiljja@unisa.ac.za P Kotze, School of Computing, University of South Africa, P O Box 392, UNISA, 0003, South Africa; kotzep@unisa.ac.za K. V. Renaud, Department of Computing Science, The University

  7. Tropical Pacific nutrient dynamics in the modern and pleistocene ocean : insights from the nitrogen isotope system

    E-Print Network [OSTI]

    Rafter, Patrick Anthony

    2009-01-01T23:59:59.000Z

    eastern tropical North Pacific Ocean, Mar. Chem. , 3, 271–eastern tropical South Pacific Ocean, Mar. Chem. , 16, 277–and N 2 fixation in the Pacific Ocean, Global Biogeochem.

  8. Influence of the tropical Atlantic versus the tropical Pacific on Caribbean rainfall

    E-Print Network [OSTI]

    . Taylor Department of Physics, University of the West Indies, Mona, Jamaica David B. Enfield Physical); KEYWORDS: Caribbean, rainfall, El Nin~o, tropical Atlantic, warm pool, model Citation: Taylor, M. A., D. B the two equatorial oceanic basins. Oppositely signed SST anomalies in the NINO3 region and the central

  9. South Africa-Integrating Sub-national Actors into National Mitigation...

    Open Energy Info (EERE)

    emission development planning, -LEDS, -NAMA Program Start 2011 Program End 2014 Country South Africa Southern Africa References Deutsche Gesellschaft fr Internationale...

  10. Sequence stratigraphic development of the Neoarchean Transvaal carbonate platform, Kaapvaal Craton, South Africa

    E-Print Network [OSTI]

    Sumner, Dawn Y.; Beukes, Nicolas J

    2006-01-01T23:59:59.000Z

    Group, Griqualand West Sequence, South Africa; implicationsgold deposits, Transvaal Sequence, South Africa. Economic476. Elrick, M. (1996). Sequence stratigraphy and platform

  11. Chapter Number1 Biomass Prediction in Tropical Forests:2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Chapter Number1 Biomass Prediction in Tropical Forests:2 The Canopy Grain Approach3 Christophe France9 1. Introduction10 The challenging task of biomass prediction in dense and heterogeneous tropical different forest structures may indeed present similar above ground biomass (AGB) values.13 This is probably

  12. Facts about ENSO: . Originates in the tropical Pacific

    E-Print Network [OSTI]

    : . Computer models show skill in forecasting tropical Pacific Ocean temperatures one to two years in advance for Pacific Ocean observations that are the foundation of skillful ENSO forecasts: Moored buoys Drifting buoysaaaaaa Facts about ENSO: . Originates in the tropical Pacific . Has a periodicity of 2­7 years

  13. What is a Hurricane? Tropical system with maximum sustained

    E-Print Network [OSTI]

    Meyers, Steven D.

    Andrew-Category 4· Category 4 Hurricane - Winds 131-155 mph. Wall failures in homes and complete roofHurricane 101 #12;What is a Hurricane? · Tropical system with maximum sustained surface wind of 74 mph or greater. A hurricane is the worst and the strongest of all tropical systems. · Also known

  14. The Maslov dequantization, idempotent and tropical mathematics: A brief introduction

    E-Print Network [OSTI]

    G. L. Litvinov

    2005-07-01T23:59:59.000Z

    This paper is a brief introduction to idempotent and tropical mathematics. Tropical mathematics can be treated as a result of the so-called Maslov dequantization of the traditional mathematics over numerical fields as the Planck constant $\\hbar$ tends to zero taking imaginary values.

  15. Proximate Population Factors and Deforestation in Tropical Agricultural Frontiers

    E-Print Network [OSTI]

    Lopez-Carr, David

    Proximate Population Factors and Deforestation in Tropical Agricultural Frontiers David L. Carr are significantly associated at the global and regional scales, evidence for population links to deforestation of thought on population­environment theories relevant to deforestation in tropical agricultural frontiers

  16. ORIGINAL PAPER Formulation of a tropical town energy budget

    E-Print Network [OSTI]

    Ribes, Aurélien

    ORIGINAL PAPER Formulation of a tropical town energy budget (t-TEB) scheme Hugo Abi Karam & Augusto /Accepted: 18 August 2009 # Springer-Verlag 2009 Abstract This work describes the tropical town energy) as observed in the Metropolitan Area of Rio de Janeiro (MARJ; -22° S; -44° W) in Brazil. Reasoning about

  17. Carbon accumulation of tropical peatlands over millennia: a modeling approach

    E-Print Network [OSTI]

    in the global carbon cycle by storing about 40­90 Gt C in peat. Over the past several decades, tropical with lowering the water table and peat burning, releasing large amounts of carbon stored in peat the Holocene Peat Model (HPM), which has been successfully applied to northern temperate peatlands. Tropical

  18. The iron nutrition of tropical foliage plants

    E-Print Network [OSTI]

    Lang, Harvey Joe

    1986-01-01T23:59:59.000Z

    extraction of Fe from fresh leaves proved to be a good indicator of the Fe status of plants. It consistently gave higher correlations with chlorophyll concentration than other methods tested. Conversely, total Fe analysis on dried leaves did not always... resolve the correct Fe status of the plant. The studies also suggested that P and the ratio of P/0. 1 N HC1-Fe may be important parameters in the diagnosis of Fe status. In a screening of 11 tropical foliage plants, Ficus benj ami ha and Nephroiepi...

  19. UPDATE: Tropical Storm Isaac | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sureReportsofDepartmentSeries | Department ofDepartmentChinaUPDATE: Tropical

  20. ARM - Lesson Plans: Tropical Western Pacific

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDC documentationBarrow, Alaska OutreachMakingPastSurfaceTheTropical

  1. Ecology of Wahlberg's velvet gecko, Homopholis wahlbergii, in southern Africa

    E-Print Network [OSTI]

    Keogh, Scott

    of the Witwatersrand, Private Bag 3, WITS, 2050 South Africa. 2 School of Botany and Zoology, The Australian NationalEcology of Wahlberg's velvet gecko, Homopholis wahlbergii, in southern Africa § Martin J. Whiting1%) of the lizards examined contained prey items, suggesting that most individuals were not in positive energy

  2. Interannual variability of photosynthesis across Africa and its attribution

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    Interannual variability of photosynthesis across Africa and its attribution Christopher A. Williams of photosynthesis across the African continent during the period 1982­2003. Acute soil water stress emerges as the primary factor driving interannual variability of photosynthesis for most of Africa. Southern savannas

  3. CANADA-SOUTHERN AFRICA MIGRATION SURVEY INFORMATION What is SAMP?

    E-Print Network [OSTI]

    Abolmaesumi, Purang

    1 CANADA-SOUTHERN AFRICA MIGRATION SURVEY INFORMATION What is SAMP? SAMP is the Southern African people in Canada and in Africa? SAMP recently launched a new migration project, The Diaspora Project come to Canada and do they ever think of going back? What kind of education individuals have obtained

  4. Published on Africa EU (http://www.africa-eu-partnership.org) Home > News > Cameroon axes illegal logging > Printer-friendly

    E-Print Network [OSTI]

    Published on Africa EU (http://www.africa-eu-partnership.org) Home > News > Cameroon axes illegal logging > Printer-friendly Cameroon axes illegal logging 14/05/2010 Cameroon axes illegal logging Illegal and trade of illegal logging. The latest country to sign up to the programme is Cameroon, which completed

  5. Petroleum developments in North Africa in 1979

    SciTech Connect (OSTI)

    Nicod, M.A.

    1980-11-01T23:59:59.000Z

    In the 6 countries covered by this report, the extent of valid petroleum rights, seismic work, and drilling was nearly the same as in 1978. The success rate of wildcat drilling decreased slightly, to 28% (33% in 1978), with 26 oil or gas discoveries. In southwestern Tunisia, the Amoco Sabrina Nord 1 tested 930 bbl of 39/sup 0/ APl oil from Cambrian-Ordovician sandstones - the first oil to come from lower Paleozoic rocks in Tunisia. First commercial oil from Cambrian-Ordovician rocks in western Libya was discovered by Agip A1-NC40 which flowed 1,400 b/d. Highlight of the year in North Africa was in the interior basin of Sudan where the Chevron Abu Gabra 1 tested 900 BOPD of 40/sup 0/ APl oil from Cretaceous rocks; 2 other wells, spudded in late 1979 in the same area, have tested 3,200 and 7,300 b/d, respectively, in early 1980. Discovery well of the interior basin was Chevron Unity 1 which tested small amounts of oil in 1978. Oil production in North Africa in 1979 averaged 3,939,500 b/d compared with 3,802,800 b/d in 1978, an increase of 3.6%.

  6. On the Wavelength of the Rossby Waves Radiated by Tropical Cyclones KYLE D. KROUSE

    E-Print Network [OSTI]

    Sobel, Adam

    of tropical cyclones; the theory then predicts the zonal separation distance of such tropical cyclone pairsOn the Wavelength of the Rossby Waves Radiated by Tropical Cyclones KYLE D. KROUSE Department cyclone (TC). In some cases, such disturbances undergo tropical cyclogenesis, resulting in a pair

  7. ATS 742 Tropical Meteorology-Fall 2013 Instructor: Professor Eric Maloney

    E-Print Network [OSTI]

    : Tropical budgets: heat, moisture, moist static energy, kinetic/potential energy Week 3: Weak tropical temperature gradients. Week 4: How convection heats the tropical atmosphere. Hot towers and other vertical heating modes Week 5: Modeling tropical precipitation with the moist static energy (MSE) budget Week 6

  8. China's Presence in Rwanda and Africa, through the Lens of the Product Life Cycle Theory

    E-Print Network [OSTI]

    Sofiani, Lily

    2013-01-01T23:59:59.000Z

    South Africa where infrastructure and communication are more attractive to investors. Obstacles such as energy

  9. VoIP Deregulation In South Africa: Implications for Underserviced Areas

    E-Print Network [OSTI]

    Blake, Edwin

    VoIP Deregulation In South Africa: Implications for Underserviced Areas Marshini Chetty a marshiniDept of Computer Science, University of Cape Town, South Africa cPolicy Associate, Bridges.org, South Africa Protocol (VoIP) in South Africa. Previously, VoIP could only be utilised by the incumbent

  10. South Africa European Union Summit SIDE EVENT ON WATER RESEARCH FOR

    E-Print Network [OSTI]

    1 South Africa ­ European Union Summit SIDE EVENT ON WATER RESEARCH FOR SUSTAINABLE DEVELOPMENT, Department of Biodiversity, University of Limpopo, South Africa Dr. Dominique ROLLIN, CEMAGREF, French Joint, South Africa Dr Mbhuti HLOPHE, Department of Chemistry, North West University, South Africa Prof K

  11. Incomes in South Africa since the fall of Apartheid Murray Leibbrandt

    E-Print Network [OSTI]

    Sadoulet, Elisabeth

    Incomes in South Africa since the fall of Apartheid by Murray Leibbrandt University of Cape Town in South Africa between 1995 and 2000. We document substantial declines--on the order of 40%--in real Africa #12;Incomes in South Africa since the fall of Apartheid Murray Leibbrandt University of Cape Town

  12. Global Threat Reduction Initiative Africa and Middle East Project Plan 2012

    SciTech Connect (OSTI)

    Jamison, Jeremy D.

    2012-02-01T23:59:59.000Z

    GTRI Africa and Middle East Project Plan submitted for school project to American Graduate University.

  13. Tropical Cloud Properties and Radiative Heating Profiles

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Mather, James

    We have generated a suite of products that includes merged soundings, cloud microphysics, and radiative fluxes and heating profiles. The cloud microphysics is strongly based on the ARM Microbase value added product (Miller et al., 2003). We have made a few changes to the microbase parameterizations to address issues we observed in our initial analysis of the tropical data. The merged sounding product is not directly related to the product developed by ARM but is similar in that it uses the microwave radiometer to scale the radiosonde column water vapor. The radiative fluxes also differ from the ARM BBHRP (Broadband Heating Rate Profile) product in terms of the radiative transfer model and the sampling interval.

  14. Evaluating the Interstate Highway Transportation System in West Africa: Recommendations for an Integrated Highway Network

    E-Print Network [OSTI]

    Nyang, Lamin Bumi

    2010-12-17T23:59:59.000Z

    facilitate development and spur economic growth in the West African region by attracting foreign investors, residential, commercial, and industrial development along its corridor. With an integrated interstate highway system in West Africa, it is expected... infrastructure so that it becomes the catalyst for Africa’s growth. The regionally integrated corridor approach offers prospects for speedier integration of infrastructure systems in Africa. The vision and ultimate objective for Africa should be to create a...

  15. annual tropical cyclone: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SEASONAL AND MONTHLY FORECASTS Geosciences Websites Summary: 10 12.25 8 5.75 Accumulated Cyclone Energy (ACE) (96.2) 130 170 170 150 148 100 68 Net Tropical't press us too hard on...

  16. WMO/CAS/WWW SIXTH INTERNATIONAL WORKSHOP on TROPICAL CYCLONES

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    to Human and Economic Losses Rapporteur: Roger A. Pielke, Jr. Center for Science and Technology Policy.2.3 Tropical cyclone case studies a) India b) Australia c) United States 5.2.4 Differing views of the role

  17. ambiente tropical um: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Abstract. We show that the tropicalization of an irreducible May 18, 2012. 1089 12;1090 DUSTIN CARTWRIGHT AND SAM PAYNE real closed fields with convex valuation Payne, Sam 460...

  18. Surface Fluxes and Tropical Intraseasonal Variability: a Reassessment

    E-Print Network [OSTI]

    Ribes, Aurélien

    and Department of Earth and Environmental Sciences, Columbia University, New York, New York, USA 2 Department whose essential features -- its existence, energetics, spatial and temporal scales -- remain so be fundamental similarities in their energetics. General circulation models (GCMs) simulate tropical

  19. The Political Economy of Deforestation in the Tropics

    E-Print Network [OSTI]

    Burgess, Robin

    Tropical deforestation accounts for almost one-fifth of greenhouse gas emissions and threatens the world’s most diverse ecosystems. Much of this deforestation is driven by illegal logging. We use novel satellite data that ...

  20. Commercial Building HVAC Energy Usage in Semi-Tropical Climates

    E-Print Network [OSTI]

    Worbs, H. E.

    1987-01-01T23:59:59.000Z

    The design of heating and cooling equipment in semi-tropical climates presents some design considerations and limitations not so prevalent in temperate climates. In some cases, the heating season may be non-existent for all practical purposes...

  1. american tropical cyclone: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    24 25 Next Page Last Page Topic Index 21 Cross-equatorial influences of a South American cold surge on the development of two eastern North Pacific tropical cyclones Texas A&M...

  2. The NASA Tropical Composition, Cloud and Climate Coupling Mission

    E-Print Network [OSTI]

    a dramatic effect on the overall amount of radiation and heat the Earth's atmosphere contains. These systems Rica in the Gulf of Panama are remarkably intense for tropical maritime systems due to a number

  3. african tropical forests: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cory C. Cleveland1,4, and Alan R in tropical rain forests may be among the highest on earth. However, data supporting this contention are rare Cleveland, Cory 116 THE WEST...

  4. african tropical forest: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cory C. Cleveland1,4, and Alan R in tropical rain forests may be among the highest on earth. However, data supporting this contention are rare Cleveland, Cory 116 THE WEST...

  5. eGY-Africa: Addressing the Digital Divide for Science in Africa

    SciTech Connect (OSTI)

    Barton, C.E.; /Australian Natl. U., Canberra; Amory-Mazaudier, C.; /Lab.Phys.Plasmas, Saint Maur des Fosses; Barry, B.; /Assoc.African Univ., Accra; Chukwuma; /Olabisi Onabanjo U.; Cottrell, R.L.; /SLAC; Kalim, U.; /Pakistan Natl. U.; Mebrahtu, A.; /Mekelle U.; Petitdidier, M.; /Lab. d'Atmos., Velizy; Rabiu, B.; /Federal Tech. U., Akure; Reeves, C.; /Earthworks bv, Delft; ,

    2010-06-16T23:59:59.000Z

    Adoption of information and communication technologies and access to the Internet is expanding in Africa, but because of the rapid growth elsewhere, a Digital Divide between Africa and the rest of the world exists, and the gap is growing. In many sub-Saharan African countries, education and research sector suffers some of the worst deficiencies in access to the Internet, despite progress in development of NRENs - National Research and Education (cyber) Networks. By contrast, it is widely acknowledged in policy statements from the African Union, the UN, and others that strength in this very sector provides the key to meeting and sustaining Millennium Development Goals. Developed countries with effective cyber-capabilities proclaim the benefits to rich and poor alike arising from the Information Revolution. This is but a dream for many scientists in African institutions. As the world of science becomes increasingly Internet-dependent, so they become increasingly isolated. eGY-Africa is a bottom-up initiative by African scientists and their collaborators to try to reduce this Digital Divide by a campaign of advocacy for better institutional facilities. Four approaches are being taken. The present status of Internet services, problems, and plans are being mapped via a combination of direct measurement of Internet performance (the PingER Project) and a questionnaire-based survey. Information is being gathered on policy statements and initiatives aimed at reducing the Digital Divide, which can be used for arguing the case for better Internet facilities. Groups of concerned scientists are being formed at the national, regional levels in Africa, building on existing networks as much as possible. Opinion in the international science community is being mobilized. Finally, and perhaps most important of all, eGY-Africa is seeking to engage with the many other programs, initiatives, and bodies that share the goal of reducing the Digital Divide - either as a direct policy objective, or indirectly as a means to an end, such as the development of an indigenous capability in science and technology for national development. The expectation is that informed opinion from the scientific community at the institutional, national, and international levels can be used to influence the decision makers and donors who are in a position to deliver better Internet capabilities.

  6. A strategy for low income housing in South Africa

    E-Print Network [OSTI]

    Niazmand, Seyed Safadin

    1983-01-01T23:59:59.000Z

    It is the intent of this thesis to investigate an alternative strategy for design and implementation of low cost housing in South Africa. For this purpose a site is chosen and a design strategy is formulated. The core ...

  7. Entrepreneurship in South Africa : improving access to finance

    E-Print Network [OSTI]

    Alexander, Amanda, M.B.A. Massachusetts Institute of Technology

    2011-01-01T23:59:59.000Z

    For a rapidly developing country, South Africa has relatively very low levels of entrepreneurship. This thesis will investigate the reasons for the anemic number of new ventures and, most specifically, tries to address one ...

  8. Energy Efficiency Country Study: Republic Of South Africa

    E-Print Network [OSTI]

    Can, Stephane de la Rue du

    2014-01-01T23:59:59.000Z

    TARGET APPLIANCE Solar Water Heater (low and high pressure)content/solar-water-heaters-save- electricity-south-africaOffer Program SWH – Solar Water Heater F IGURES F IGURE 1. E

  9. Power Africa's Beyond the Grid Increasing Access through Small...

    Office of Environmental Management (EM)

    in November 2013, of 600K in grant funding for renewable energy business models in Kenya and Nigeria. Formally launched by President Obama in June 2013, Power Africa is the...

  10. Product Quality Assurance for Off-Grid Lighting in Africa

    E-Print Network [OSTI]

    Mills, Evan; World Bank

    2008-01-01T23:59:59.000Z

    of technological options for off-grid light provision thatQuality Assurance for Off-Grid Lighting in Africa Conferencemarkets for high efficiency off-grid lighting technologies

  11. Sustainable Fishing in West Africa: Combating Piracy and Poverty

    E-Print Network [OSTI]

    McPhee-Shaw, Erika

    presents Sustainable Fishing in West Africa: Combating Piracy and Poverty an Evening with Mariah to help combat the poverty, piracy, and corruption. About the Speaker: Mariah Boyle is an alumna of MLML

  12. Characterization of maize testing locations in eastern and southern Africa

    E-Print Network [OSTI]

    Maideni, Francis W.

    2006-08-16T23:59:59.000Z

    ???????..?...?.??. 15 RESULTS AND DISCUSSION ??????????..??. 26 SUMMARY????????????????????... 52 III PHENOTYPIC AND GENETIC ANALYSIS OF MAIZE TESTING EVALUATIONS IN EASTERN AND SOUTHERN AFRICA????????????.?..................................... 94... INTRODUCTION????????????.???..??? 94 REVIEW OF LITERATURE????????..???.??.. 96 MATERIALS AND METHODS???????..?...?.??.. 98 RESULTS AND DISCUSSION ???........................................ 100 SUMMARY??????????????????????. 158 IV...

  13. Before House Subcommittee on Africa, Global Health, Global Human...

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

    Affairs 11-14-14JonathanElkind FT HFA.pdf More Documents & Publications Bioenergy for Sustainable Development Deliverables from U.S.-Africa Energy Ministerial 2014 Draft Agenda...

  14. africa power pool: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    more densely populated than parts of eastern and south- ern Africa, a net decrease in potential for human exposure to these vectors results. For A. gambiae, 78112 million fewer...

  15. People and Forests: a case study from Benin, West Africa

    E-Print Network [OSTI]

    Kraus, Erika Beth

    2012-05-31T23:59:59.000Z

    The purpose of this work is to demonstrate how sacred forests in Benin, West Africa, contribute to forest conservation. Local use of natural resources is well-practiced in maintaining wooded space; the same use of those ...

  16. Characterization of maize testing locations in eastern and southern Africa 

    E-Print Network [OSTI]

    Maideni, Francis W.

    2006-08-16T23:59:59.000Z

    The region of eastern and southern Africa is very diverse in environments and agronomic practices. The region has one of the highest per capita consumption of maize (Zea mays. L), which is predominantly produced by smallholder ...

  17. africa mediterranean fruit: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Websites Summary: Development and evaluation of the BSC-DREAM8b dust regional model over Northern Africa, Barcelona, Spain (Manuscript received 6 September 2011; in final form 30...

  18. New Challenges to Food Security in Sub-Saharan Africa

    E-Print Network [OSTI]

    Indzembi, Franck Corentin

    2013-12-31T23:59:59.000Z

    The countries of Sub-Saharan Africa remain among the globe's least developed and most food insecure nations. Policymakers argue that the answers to increased agricultural productivity and financial growth lie in the adoption ...

  19. Ancient west Eurasian ancestry in southern and eastern Africa

    E-Print Network [OSTI]

    Pickrell, Joseph K.

    The history of southern Africa involved interactions between indigenous hunter–gatherers and a range of populations that moved into the region. Here we use genome-wide genetic data to show that there are at least two ...

  20. Response of tropical sea surface temperature, precipitation, and tropical cyclone-related variables to changes in global and local forcing

    E-Print Network [OSTI]

    Sobel, Adam

    A single-column model is used to estimate the equilibrium response of sea surface temperature (SST), precipitation, and several variables related to tropical cyclone (TC) activity to changes in both local and global forcing. ...

  1. The Tropical Brown Alga Lobophora variegata (Lamouroux) Womersley: A Prospective Bioindicator for Ag Contamination in Tropical Coastal Waters

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The Tropical Brown Alga Lobophora variegata (Lamouroux) Womersley: A Prospective Bioindicator determined in the brown alga Lobophora variegata, using radiotracer techniques. Results indicate that this widely distributed alga could be a useful bioindicator species for surveying silver contamination

  2. Prince Edward Is (South Africa) -Boonzaier et al. 95 a brieF history oF Fishing in the Prince edward islands, south aFrica,

    E-Print Network [OSTI]

    Pauly, Daniel

    Prince Edward Is (South Africa) - Boonzaier et al. 95 a brieF history oF Fishing in the Prince edward islands, south aFrica, 1950­20101 Lisa Boonzaier, Sarah Harper, Dirk Zeller, and Daniel Pauly Sea.pauly@fisheries.ubc.ca abstract To reconstruct the catch history in the waters of the Prince Edward Islands (South Africa) from

  3. Rothschild South Africa Foundation Scholarship 2015 To be considered for the Rothschild South Africa Foundation Scholarship for 2015, please fill in your details

    E-Print Network [OSTI]

    Wagner, Stephan

    Rothschild South Africa Foundation Scholarship ­ 2015 To be considered for the Rothschild South as confidential and will only be shared with the Rothschild South Africa Foundation 1. Please tell us about Africa Foundation Scholarship for 2015, please fill in your details and provide brief answers to the five

  4. Republic of South Africa Constitution Act 110 of 1983 To introduce a new constitution for the Republic of South Africa and to provide for matters

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Republic of South Africa Constitution Act 110 of 1983 ACT To introduce a new constitution for the Republic of South Africa and to provide for matters incidental thereto. (English text signed by the State; and ARE DESIROUS OF GIVING THE REPUBLIC OF SOUTH AFRICA A CONSTITUTION which provides for elected and responsible

  5. Intimate Partner Violence and Sexual Risk-taking among Men Who Have Sex with Men in South Africa

    E-Print Network [OSTI]

    Stephenson, Robert; de Voux, Alex; Sullivan, Patrick S

    2011-01-01T23:59:59.000Z

    HIV infection in South Africa--survival differences. QJM.disease and injury in South Africa. Popul Health Metr. 8(1):Have Sex with Men in South Africa Rob Stephenson, PhD* Alex

  6. Paleomagnetism of a lateritic paleoweathering horizon and overlying Paleoproterozoic red beds from South Africa: Implications for the

    E-Print Network [OSTI]

    South Africa: Implications for the Kaapvaal apparent polar wander path and a confirmation of atmospheric: paleomagnetism, Paleoproterozoic, South Africa, apparent polar wander paths, paleoatmosphere, lateritic paleosols Paleoproterozoic red beds from South Africa: Implicat

  7. Tropical climate variability from the last glacial maximum to the present

    E-Print Network [OSTI]

    Dahl, Kristina Ariel

    2005-01-01T23:59:59.000Z

    This thesis evaluates the nature and magnitude of tropical climate variability from the Last Glacial Maximum to the present. The temporal variability of two specific tropical climate phenomena is examined. The first is the ...

  8. Vertical flux, ecology and dissolution of radiolaria in tropical oceans : implications for the silica cycle

    E-Print Network [OSTI]

    Takahashi, Kozo

    1982-01-01T23:59:59.000Z

    Radiolarians which settle through the oceanic water column were recovered from three stations (western Tropical Atlantic-Station E, central Tropical Pacific-P1 and Panama Basin-PB) using PARFLUX sediment traps in moored ...

  9. Equilibrium Tropical Cyclone Size in an Idealized State of Axisymmetric Radiative–Convective Equilibrium*

    E-Print Network [OSTI]

    Chavas, Daniel R.

    Tropical cyclone size remains an unsolved problem in tropical meteorology, yet size plays a significant role in modulating damage. This work employs the Bryan cloud model (CM1) to systematically explore the sensitivity of ...

  10. The Role of Mineralogy in Organic Matter Stabilization in Tropical Soils

    E-Print Network [OSTI]

    Sparks, Donald L.

    The Role of Mineralogy in Organic Matter Stabilization in Tropical Soils Wipawan Thaymuang,1 Irb) and mineralogy. This study investigated the mineral properties and OM stabilization in 12 surface tropical soil

  11. Sensitivity of Tropical Cyclone Intensity to Ventilation in an Axisymmetric Model

    E-Print Network [OSTI]

    Tang, Brian

    The sensitivity of tropical cyclone intensity to ventilation of cooler, drier air into the inner core is examined using an axisymmetric tropical cyclone model with parameterized ventilation. Sufficiently strong ventilation ...

  12. Geographic variation in vulnerability to climate warming in a tropical Caribbean lizard

    E-Print Network [OSTI]

    Leal, Manuel S.

    Geographic variation in vulnerability to climate warming in a tropical Caribbean lizard Alex R temperatures (Tb) of the tropical Caribbean lizard Anolis cristatellus at nine sites representing two habitat

  13. LONDON SCHOOL OF HYGIENE & TROPICAL MEDICINE FREEDOM OF INFORMATION ACT 2000

    E-Print Network [OSTI]

    Maizels, Rick

    1 LONDON SCHOOL OF HYGIENE & TROPICAL MEDICINE FREEDOM OF INFORMATION ACT 2000 REQUEST help. NB. The London School of Hygiene & Tropical Medicine has the right to ask for clarification

  14. London School of Hygiene & Tropical The School is a world-leading centre for

    E-Print Network [OSTI]

    Maizels, Rick

    London School of Hygiene & Tropical Medicine The School is a world-leading centre for research information Registry London School of Hygiene & Tropical Medicine Keppel Street London WC1E 7HT UNITED KINGDOM

  15. Multi-project baselines for potential clean development mechanism projects in the electricity sector in South Africa

    E-Print Network [OSTI]

    Winkler, H.; Spalding-Fecher, R.; Sathaye, J.; Price, L.

    2002-01-01T23:59:59.000Z

    projects in the electricity sector in South Africa. JournalMechanism projects in the electricity sector in South AfricaCDM projects in the electricity sector References UNFCCC,

  16. Sustainable waste management in Africa through CDM projects

    SciTech Connect (OSTI)

    Couth, R. [CRECHE, Centre for Research in Environmental, Coastal and Hydrological Engineering, School of Engineering, University of KwaZulu-Natal, Durban 4041 (South Africa); Trois, C., E-mail: troisc@ukzn.ac.za [CRECHE, Centre for Research in Environmental, Coastal and Hydrological Engineering, School of Engineering, University of KwaZulu-Natal, Durban 4041 (South Africa)

    2012-11-15T23:59:59.000Z

    Highlights: Black-Right-Pointing-Pointer This is a compendium on GHG reductions via improved waste strategies in Africa. Black-Right-Pointing-Pointer This note provides a strategic framework for Local Authorities in Africa. Black-Right-Pointing-Pointer Assists LAs to select Zero Waste scenarios and achieve sustained GHG reduction. - Abstract: Only few Clean Development Mechanism (CDM) projects (traditionally focussed on landfill gas combustion) have been registered in Africa if compared to similar developing countries. The waste hierarchy adopted by many African countries clearly shows that waste recycling and composting projects are generally the most sustainable. This paper undertakes a sustainability assessment for practical waste treatment and disposal scenarios for Africa and makes recommendations for consideration. The appraisal in this paper demonstrates that mechanical biological treatment of waste becomes more financially attractive if established through the CDM process. Waste will continue to be dumped in Africa with increasing greenhouse gas emissions produced, unless industrialised countries (Annex 1) fund carbon emission reduction schemes through a replacement to the Kyoto Protocol. Such a replacement should calculate all of the direct and indirect carbon emission savings and seek to promote public-private partnerships through a concerted support of the informal sector.

  17. Tropical forest responses to increasing atmospheric CO2: current knowledge and opportunities for future research

    E-Print Network [OSTI]

    Bermingham, Eldredge

    their representation in Earth system models. Tropical forests play a significant role in the global carbon cycle

  18. Four rigs refurbished for West Africa drilling

    SciTech Connect (OSTI)

    Not Available

    1991-06-10T23:59:59.000Z

    In April and May 1990, Shell Petroleum Development Co. of Nigeria Ltd. awarded Noble Drilling West Africa Inc. four separate contracts to drill oil and gas wells in the inland waterways of Nigeria. The contracted rigs included a shallow water jack up, the NN-1, and three posted barges, the Gene Rosser, the Chuck Syring, and the Lewis Dugger. The jack up was built in 1978, and the three posted barges are 1980s vintage. Three of the rigs have been idle for a number of years. The Shell Nigeria contracts required major modifications to the rigs before putting them into international service. Noble replaced or refurbished all major pieces of equipment in the drilling, power, and service systems on the rigs. Rig crews serviced all other equipment. A significant amount of general service piping and electrical wiring was replaced. Each rig also required additional motor control centers to support the new drilling and mud processing equipment. Alfa-Laval waste-heat water desalination plants and new sewage treatment units were installed on all four rigs. Because of the tidal variances and high silt conditions expected in the African waterways, all engine cooling systems were converted from heat exchangers to radiators. Rotary tables were made common on all rigs at 37 1/2 in. Noble had all traveling equipment completely inspected and modified as necessary. Strict attention was paid to certification and documentation of all equipment. Safety upgrades conformed to both Shell and Noble standards. Fire and gas detection systems were installed throughout each rig. Water and foam deluge systems were installed in the wellhead areas, and new foam systems and monitors were installed on the helldecks.

  19. China's Presence in Rwanda and Africa, through the Lens of the Product Life Cycle Theory

    E-Print Network [OSTI]

    Sofiani, Lily

    2013-01-01T23:59:59.000Z

    >. "Looking-East-Rwanda-China-case-study." Home | ACET.849662/special-report-china-storms-africa>. "The Birth ofGift: The Real Story of China in Africa [Paperback]." N.p. ,

  20. A modal perspective of preferential entailment K. Britz, School of Computing, Univ. of South Africa

    E-Print Network [OSTI]

    Labuschagne, Willem

    A modal perspective of preferential entailment K. Britz, School of Computing, Univ. of South Africa J. Heidema, Dept. of Mathematics, Univ. of South Africa W. Labuschagne, Dept. of Computer Science

  1. South African National Biodiversity Institute and University of Cape Town (South Africa) Postdoctoral Fellow (1position)

    E-Print Network [OSTI]

    Jarrett, Thomas H.

    South African National Biodiversity Institute and University of Cape Town (South Africa from designated groups in terms of South Africa's employment equity targets will have preference) Postdoctoral Fellow (1position) (Two year Contract) The South African National Biodiversity Institute

  2. Development of infrastructure asset management software solutions for municipalities in South Africa

    E-Print Network [OSTI]

    von Holdt, Christopher James

    2009-05-15T23:59:59.000Z

    This Record of Study presents the development of infrastructure asset management software solutions for municipalities in South Africa. The study was performed within a multidisciplinary engineering consulting company in South Africa...

  3. Ecology in Africa: a view from the past for informing the future

    E-Print Network [OSTI]

    Martins, Dino J.

    2013-01-01T23:59:59.000Z

    reviews ISSN 1948?6596  Ecology in Africa: a view from the the future  African Ecology – Benchmarks and Historical s  role  in  shaping  the  ecology  of  Africa…”.   These 

  4. Tropical Forestry Researchat the USDA Forest Service's Instituteof Pacific Islands Forestry1

    E-Print Network [OSTI]

    Standiford, Richard B.

    Tropical Forestry Researchat the USDA Forest Service's Instituteof Pacific Islands Forestry1 C greater emphasis on tropical forestry management and research was provided by the International Forestry Islands Forestry in Hawaii, the Institute of Tropical Forestry in Puerto Rico, and the U S . Forest

  5. Developing versus Nondeveloping Disturbances for Tropical Cyclone Formation. Part I: North Atlantic*

    E-Print Network [OSTI]

    Li, Tim

    Developing versus Nondeveloping Disturbances for Tropical Cyclone Formation. Part I: North Atlantic the characteristic differences of tropical disturbances that eventually develop into tropical cyclones (TCs) versus for TC genesis in the North Atlantic. When the east and west (separated by 408W) Atlantic are examined

  6. Notes and Correspondence Are Tropical Cyclones Less Effectively Formed by Easterly Waves in the

    E-Print Network [OSTI]

    Chen, Tsing-Chang "Mike"

    tropical cyclones in the western North Pacific. By carefully separating easterly waves from the lowerNotes and Correspondence Are Tropical Cyclones Less Effectively Formed by Easterly Waves@iastate.edu #12;1 Abstract It has been observed that the percentage of tropical cyclones originating from easterly

  7. Midlevel Ventilation's Constraint on Tropical Cyclone Intensity BRIAN TANG AND KERRY EMANUEL

    E-Print Network [OSTI]

    Emanuel, Kerry A.

    Midlevel Ventilation's Constraint on Tropical Cyclone Intensity BRIAN TANG AND KERRY EMANUEL ventilation, or the flux of low-entropy air into the inner core of a tropical cyclone (TC), is a hy to assess how ventilation affects tropical cyclone intensity via two possible pathways: the first through

  8. Regional Patterns of Tropical Indo-Pacific Climate Change: Evidence of the Walker Circulation Weakening*

    E-Print Network [OSTI]

    Xie, Shang-Ping

    in the tropical eastern Pacific and western Indian Ocean than in the tropical western Pacific and eastern IndianRegional Patterns of Tropical Indo-Pacific Climate Change: Evidence of the Walker Circulation Weakening* HIROKI TOKINAGA, SHANG-PING XIE, AND AXEL TIMMERMANN International Pacific Research Center, SOEST

  9. An optimizing reduced order FDS for the tropical Pacific Ocean reduced gravity model

    E-Print Network [OSTI]

    Aluffi, Paolo

    An optimizing reduced order FDS for the tropical Pacific Ocean reduced gravity model Zhendong Luoa) for the tropical Pacific Ocean reduced gravity model. Ensembles of data are compiled from transient solutions computed from the discrete equation system derived by FDS for the tropical Pacific Ocean reduced gravity

  10. Primary production in the eastern tropical Pacific: A review J. Timothy Pennington a

    E-Print Network [OSTI]

    Pennington, J. Timothy

    , Peru Abstract The eastern tropical Pacific includes 28 million km2 of ocean between 23.5°N phytoplankton growth (and nitrogen fixation) over large portions of the open-ocean eastern tropical Pacific Pacific. Seasonal cycles are weak over much of the open-ocean eastern tropical Pacific, although several

  11. Reduced Order Modeling of the Upper Tropical Pacific Ocean Model Using Proper Orthogonal Decomposition

    E-Print Network [OSTI]

    Aluffi, Paolo

    Reduced Order Modeling of the Upper Tropical Pacific Ocean Model Using Proper Orthogonal of a large-scale upper ocean circulation in the tropic Pacific domain. We construct different POD models-scale seasonal variability of the tropic Pacific obtained by the original model is well captured by a low

  12. Eddy mean flow decomposition and eddy diffusivity estimates in the tropical Pacific Ocean

    E-Print Network [OSTI]

    Eddy mean flow decomposition and eddy diffusivity estimates in the tropical Pacific Ocean: 2] Eddy diffusivity of the surface velocity field in the tropical Pacific Ocean was estimated using diffusivity estimates in the tropical Pacific Ocean: 2. Results, J. Geophys. Res., 107(C10), 3154, doi:10

  13. Interhemispheric Teleconnections from Tropical Heat Sources in Intermediate and Simple Models

    E-Print Network [OSTI]

    the prescribed tropical heating in both intensity and geographical extent and by inducing remote precipitation anomalies by interaction with the basic state. 1. Introduction Tropical heat sources can remotely influenceInterhemispheric Teleconnections from Tropical Heat Sources in Intermediate and Simple Models XUAN

  14. A Simple Atmospheric Model of the Local and Teleconnection Responses to Tropical Heating Anomalies

    E-Print Network [OSTI]

    Wang, Chunzai

    the local and remote stationary responses of the atmosphere to tropical heating anomalies is describedA Simple Atmospheric Model of the Local and Teleconnection Responses to Tropical Heating Anomalies and forced with a localized heating for illustration. In the tropics, the baroclinic responses are familiar

  15. Regional feedbacks among fire, climate, and tropical deforestation William A. Hoffmann1

    E-Print Network [OSTI]

    Jackson, Robert B.

    Regional feedbacks among fire, climate, and tropical deforestation William A. Hoffmann1 December 2003. [1] Numerous studies with general circulation models suggest that tropical deforestation can to estimate the effect of tropical deforestation on fire risk through the McArthur forest fire danger index

  16. Global warming shifts Pacific tropical cyclone location MinHo Kwon,1,3

    E-Print Network [OSTI]

    Li, Tim

    Global warming shifts Pacific tropical cyclone location Tim Li,1 MinHo Kwon,1,3 Ming Zhao,3 Jong) is used to investigate the change of tropical cyclone frequency in the North Pacific under global warming, and W. Yu (2010), Global warming shifts Pacific tropical cyclone location, Geophys. Res. Lett., 37, L

  17. Interactions between the tropical ISO and midlatitude low-frequency flow

    E-Print Network [OSTI]

    Li, Tim

    Interactions between the tropical ISO and midlatitude low-frequency flow Lin-Lin Pan Æ Tim Li Abstract In this study, we investigate the interaction between the tropical Intraseasonal Oscillation (ISO study the role of the syn- optic eddy feedback in the midlatitude response to the tropical ISO forcing

  18. Article #11, May 23, 2006 AJ's Technical Tips: Technologies for Lighting in Rural Africa

    E-Print Network [OSTI]

    Jacobson, Arne

    Jacobson People living in off-grid areas in Africa use a variety of different technologies for lighting. I

  19. Area selection for diamonds using magnetotellurics: Examples from southern Africa Alan G. Jones a,

    E-Print Network [OSTI]

    Jones, Alan G.

    of the Witwatersrand, Jan Smuts Avenue, Johannesburg 2050, South Africa k ABB AB, HVDC, Ludvika, SE-77180, Sweden a b

  20. 2nd Edition Nov. 2011 CampusFrance South Africa Newsletter

    E-Print Network [OSTI]

    Wagner, Stephan

    2nd Edition Nov. 2011 CampusFrance South Africa Newsletter Table of contents : o Current Bursary offered by the French Embassy aim to respond to South Africa and Lesotho's need to train and equip French per country) for Honours and Masters students from South Korea, Mexico, India, USA, South Africa

  1. International Sirex Symposium, Pretoria, South Africa 9-16 May 2007

    E-Print Network [OSTI]

    International Sirex Symposium, Pretoria, South Africa 9-16 May 2007 Page 43 THE THREAT OF SIREX NOCTILIO AND OTHER ALIEN INVASIVE SPECIES IN AFRICA Clement Chilima FISNA Secretariat, Forestry Research the threat of alien invasive species to forest resources in Africa and the weak capacity of most African

  2. Novel methods reveal shifts in migration phenology of barn swallows in South Africa

    E-Print Network [OSTI]

    de Villiers, Marienne

    1 Novel methods reveal shifts in migration phenology of barn swallows in South Africa Res Altwegg National Biodiversity Institute, P/Bag X7, Claremont 7735, South Africa Animal Demography Unit, Department of Zoology and Department of Statistical Sciences, University of Cape Town, Rondebosch 7701, South Africa

  3. Learn more about the summer course which includes a 3 week trip to South Africa.

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    Learn more about the summer course which includes a 3 week trip to South Africa. The program an introduction to the historical and the con- temporary South Africa as well as at least one post trip meeting@binghamton.edu or Josephine Allen at jaallen@binghamton.edu. Destination South Africa - Summer Course 2012 February 28th

  4. Judicial review of legislation: Constitutionalism personified in the United Kingdom, the Netherlands and South Africa

    E-Print Network [OSTI]

    van den Brink, Jeroen

    , the Netherlands and South Africa By Gerhard van der Schyff Supervisor: prof. dr. Paul Cliteur Although fast and South Africa. These systems provide fertile ground for comparison, as they present a spectrum judicial review. Clearly, a very measured approach to bipolar constitutionalism. South Africa inhabits

  5. Interannual memory effects for spring NDVI in semi-arid South Africa Yves Richard,1

    E-Print Network [OSTI]

    Boyer, Edmond

    Interannual memory effects for spring NDVI in semi-arid South Africa Yves Richard,1 Nade`ge Martiny vegetation dynamics of semi-arid South Africa may preferably be driven by biological rather than hydrological (2008), Interannual memory effects for spring NDVI in semi-arid South Africa, Geophys. Res. Lett., 35, L

  6. SAI Study Tour to South Africa "Cultural Immersion and Transformational Learning"

    E-Print Network [OSTI]

    11th SAI Study Tour to South Africa "Cultural Immersion and Transformational Learning" The Rutgers Graduate School of Education offers a unique 3-credit summer experience in South Africa; its schools and rural townships located in the Gauteng and Western Cape provinces of South Africa. Among the planned

  7. New species of Anthostomella on fynbos, with a key to the genus in South Africa

    E-Print Network [OSTI]

    New species of Anthostomella on fynbos, with a key to the genus in South Africa Seonju LEE, South Africa. E-mail : slee@maties.sun.ac.za Received 3 April 2002; accepted 18 November 2002. A study of saprobic fungi occurring on the fynbos of the Western Cape Province of South Africa yielded four unknown

  8. Contextual appraisal of GM cotton diffusion in South Africa Michel Fok1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Contextual appraisal of GM cotton diffusion in South Africa Michel Fok1 , Jean-Luc Hofs1 , Marnus Gouse2 , Johann Kirsten2 1 CIRAD, France ; 2 University of Pretoria, South Africa Published in: Life the introduction of GMC and this causes observers to question the so-called success story of GMC in South Africa

  9. History and the Technopolitics of Identity: The Case of Apartheid South Africa*

    E-Print Network [OSTI]

    Edwards, Paul N.

    History and the Technopolitics of Identity: The Case of Apartheid South Africa* Paul N. Edwards and computers in apartheid South Africa, considering these systems ­ and apartheid more generally ­ as forms-apartheid activists, who fought to limit South Africa's access to these systems. We argue that nuclear systems enacted

  10. First report of bacterial wilt caused by Ralstonia solanacearumon eucalypts in South Africa

    E-Print Network [OSTI]

    First report of bacterial wilt caused by Ralstonia solanacearumon eucalypts in South Africa BY T. A of Pretoria, 0002 Pretoria, South Africa. E-mail: Teresa. Coutinho@FABI.up.ac.za; 3 Department of Microbiology and Biochemistry, University of the Orange Free State, PO Box 339, Bloemfontein 9300, South Africa; 4 Agricultural

  11. Improving Crop Yield and Water Productivity by Ecological Sanitation and Water Harvesting in South Africa

    E-Print Network [OSTI]

    Wehrli, Bernhard

    , University of KwaZulu-Natal, Private Bag X01, Scottsville 3209, South Africa *S Supporting Information and fertility constraints in rain- fed smallholder agriculture in South Africa, namely in situ water harvesting significantly increased maize yields by 12% and transpiration by 2% on average across South Africa. In situ

  12. South Africa 1-2 9/11 Arts Project 3

    E-Print Network [OSTI]

    Schmitt, William R.

    South Africa 1-2 9/11 Arts Project 3 Pine Ridge 4-5 Equine Therapy 6 Emotional Resources 7 Outsider on Carlyle Circle ArtTherapy in South Africa Expanding our Diversity Course by Becky Jacobson, 2nd year South to further introduce art therapy to the people of South Africa. Our group was composed of eleven students

  13. International Sirex Symposium, Pretoria, South Africa 9-16 May 2007

    E-Print Network [OSTI]

    International Sirex Symposium, Pretoria, South Africa 9-16 May 2007 Page 46 PERSPECTIVES of South America. Prior to joining FAO, Gillian worked in Africa for 12 years, including five years ON THE IMPENDING THREAT OF SIREX NOCTILIO TO AFRICA Gillian Allard Forestry Department, Food and Agriculture

  14. Population structure and possible origin of Amylostereum areolatum in South Africa

    E-Print Network [OSTI]

    Population structure and possible origin of Amylostereum areolatum in South Africa B. Slippers*², M, University of Pretoria, Pretoria, South Africa 0002 The woodwasp, Sirex noctilio, and its symbiotic fungus was first reported from South Africa in 1994. In this study, the population diversity of A. areolatum

  15. Sir --As 27 April 2004 marks ten years of multiracial democracy in South Africa,

    E-Print Network [OSTI]

    Sir -- As 27 April 2004 marks ten years of multiracial democracy in South Africa, it is appropriate, engineering and technology. The strategy rightly notes that, given South Africa's correspondence NATURE|VOL428 of Research in South Africa (CAPRISA), University of KwaZulu-Natal, King George V Avenue, Durban 4041, South

  16. Susceptibility of provenances and families of Pinus maximinoi and Pinus tecunumanii to frost in South Africa

    E-Print Network [OSTI]

    in South Africa R. G. Mitchell · M. J. Wingfield · G. R. Hodge · W. S. Dvorak · T. A. Coutinho Received: 15+Business Media B.V. 2012 Abstract The future of South Africa's most important pine species, Pinus patula subtropical species that provide an alternative to planting P. patula on the warmer sites of South Africa

  17. THE EU-AFRICA ENERGY COOPERATION: CHALLENGES AND OPPORTUNITIES FOR PUBLIC AND PRIVATE BUSINESSES

    E-Print Network [OSTI]

    Boyer, Edmond

    multilateral and bilateral energy relationships with Africa. There are three EU-Africa energy initiativesTHE EU-AFRICA ENERGY COOPERATION: CHALLENGES AND OPPORTUNITIES FOR PUBLIC AND PRIVATE BUSINESSESD Candidate Energy security, sustainable development and mutual benefits are the three keywords

  18. THE DISTRIBUTIONAL IMPACT OF DAMS: EVIDENCE FROM CROPLAND PRODUCTIVITY IN AFRICA

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    THE DISTRIBUTIONAL IMPACT OF DAMS: EVIDENCE FROM CROPLAND PRODUCTIVITY IN AFRICA Eric STROBL Robert of Dams: Evidence from Cropland Productivity in Africa Eric Strobl*, ** Ecole Polytechnique & Robert the distributional impact of major dams on cropland productivity in Africa. As our unit of analysis we use

  19. Biofuels in Africa May Help Achieve Global Goals, Experts Say | Worldwatch Institute Login | Register | Shopping Cart

    E-Print Network [OSTI]

    Biofuels in Africa May Help Achieve Global Goals, Experts Say | Worldwatch Institute Login Contact Us Sign Up for e-mail updates Home » Online Features » e2 - Eye on Earth Biofuels in Africa May for developing biofuels from sugar cane and other crops. Photo by Steve McNicholas Africa can use the biofuels

  20. "Some, for all, forever" Managing Water for Sustainable Development in South Africa

    E-Print Network [OSTI]

    Mauzerall, Denise

    "Some, for all, forever" Managing Water for Sustainable Development in South Africa Priscilla" Integrated Water Resources Management in South Africa" a. Natural Conditions and Hydrology b. Pollution c Services Act of 1997 IV. Evaluation: South Africa as a Case Study a. Environmental goals b. Equity goals c

  1. Adjustment of the Remote Tropical Climate to El Nio Conditions BENJAMIN R. LINTNER* AND JOHN C. H. CHIANG

    E-Print Network [OSTI]

    Lintner, Benjamin Richard

    convective heating anomalies that in turn cause remote tropical changes through a suite of tele- connectedAdjustment of the Remote Tropical Climate to El Niño Conditions BENJAMIN R. LINTNER* AND JOHN C. H) ABSTRACT The adjustment of the tropical climate outside the Pacific (the "remote Tropics") to the abrupt

  2. Possible linkages between Saharan dust and tropical cyclone rain band invigoration in the eastern Atlantic during NAMMA-06

    E-Print Network [OSTI]

    Rutledge, Steven

    for tropical cyclogenesis, it also provides an infusion of cloud condensation and ice nuclei which can

  3. Temporal Changes in a Tropical Nekton Assemblage and

    E-Print Network [OSTI]

    Temporal Changes in a Tropical Nekton Assemblage and Performance of a Prawn Selective Gear TING and weights of 39 trials conductedfor a selective prawning gear whose performance in bycatch reduc tionI., 1975; Rob erts, 1978; Allen and Coates, 1990), but is extremely rich in the marine coun terpart

  4. Environmental Factors Affecting Tropical Cyclone Power Dissipation KERRY EMANUEL

    E-Print Network [OSTI]

    Emanuel, Kerry A.

    - son 1974; Webster et al. 2005), and the Accumulated Cyclone Energy (ACE) index (Bell et al. 2000, the PDI is also accumulated over each year. Annually accumulated integral metrics such as ACE and PDI showEnvironmental Factors Affecting Tropical Cyclone Power Dissipation KERRY EMANUEL Program

  5. Low beta diversity of herbivorous insects in tropical forests

    E-Print Network [OSTI]

    Basset, Yves

    LETTERS Low beta diversity of herbivorous insects in tropical forests Vojtech Novotny1 , Scott E) and fruit (fruitflies, Diptera) found a low rate of change in species composition (beta diversity) across 75 of kilo- metres. Low beta diversity was also documented in groups with differing host specificity

  6. Variable Responses of Lowland Tropical Forest Nutrient Status

    E-Print Network [OSTI]

    Harms, Kyle E.

    Variable Responses of Lowland Tropical Forest Nutrient Status to to play a key role in nutrient retention. We discuss our findings in the context of possible impacts Springer Science+Business Media, LLC 387 #12;growth not only alters forests' nutrient demands but also

  7. Detection of iodine monoxide in the tropical free troposphere

    E-Print Network [OSTI]

    19, 2012) Atmospheric iodine monoxide (IO) is a radical that catalytically destroys heat trapping in the remote tropical marine boundary layer (MBL) (2­4). IO further affects the oxidative capacity iodine species over the remote ocean remain poorly understood (11, 14) but are currently thought

  8. TROPICAL MULTIPLICATION MAPS AND THE GIESEKER-PETRI THEOREM

    E-Print Network [OSTI]

    Payne, Sam

    TROPICAL MULTIPLICATION MAPS AND THE GIESEKER-PETRI THEOREM DAVID JENSEN AND SAM PAYNE Abstract. We. Supported in part by NSF grants DMS­1068689 and CAREER DMS­1149054. 1 #12;2 DAVID JENSEN AND SAM PAYNE v1 w1 by the addition or deletion of a bridge are canonically isomorphic, and these isomorphisms respect the images of the

  9. Fungal endophytes limit pathogen damage in a tropical tree

    E-Print Network [OSTI]

    Bermingham, Eldredge

    Fungal endophytes limit pathogen damage in a tropical tree A. Elizabeth Arnold* , Luis Carlos Meji species examined to date harbors endophytic fungi within its asymptomatic aerial tissues, such that endophytes rep- resent a ubiquitous, yet cryptic, component of terrestrial plant communities. Fungal

  10. Global Patterns of Ecological Productivity and Tropical Forest Biomass

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    those measurements in addition to climate data to construct a suite of empirical models of NPP productivity (NPP) on a global scale and biomass accumulation across thee tropics. Scientists have been model of terrestrial net primary productivity (NPP), and its simplicity and relative accuracy has led

  11. Tropical forest soil microbial communities couple iron and carbon biogeochemistry

    SciTech Connect (OSTI)

    Dubinsky, E.A.; Silver, W.L.; Firestone, M.K.

    2009-10-15T23:59:59.000Z

    We report that iron-reducing bacteria are primary mediators of anaerobic carbon oxidation in upland tropical soils spanning a rainfall gradient (3500 - 5000 mm yr-1) in northeast Puerto Rico. The abundant rainfall and high net primary productivity of these tropical forests provide optimal soil habitat for iron-reducing and iron-oxidizing bacteria. Spatially and temporally dynamic redox conditions make iron-transforming microbial communities central to the belowground carbon cycle in these wet tropical forests. The exceedingly high abundance of iron-reducing bacteria (up to 1.2 x 10{sup 9} cells per gram soil) indicated that they possess extensive metabolic capacity to catalyze the reduction of iron minerals. In soils from the higher rainfall sites, measured rates of ferric iron reduction could account for up to 44 % of organic carbon oxidation. Iron reducers appeared to compete with methanogens when labile carbon availability was limited. We found large numbers of bacteria that oxidize reduced iron at sites with high rates of iron reduction and large numbers of iron-reducers. the coexistence of large populations of ironreducing and iron-oxidizing bacteria is evidence for rapid iron cycling between its reduced and oxidized states, and suggests that mutualistic interactions among these bacteria ultimately fuel organic carbon oxidation and inhibit CH4 production in these upland tropical forests.

  12. Tropical mountain cradles of dry forest diversity Christopher W. Dick*

    E-Print Network [OSTI]

    Bermingham, Eldredge

    * *Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Panama´; and Department of Ecology radiated at vastly different times, so fo- cus on a single taxon would be mislead- ing. On the side of rain- ple, the dry forest legume clade Leu- caena underwent endemic radiation in southwest Mexico beginning

  13. Transport of carbon monoxide from the tropics to the extratropics

    E-Print Network [OSTI]

    November), biomass burning in the southern tropics produces large-scale plumes of CO. These plumes can biomass-burning regions generally rises into the middle and upper troposphere, where it is entrained. For example, it is now clear that the main population areas in the northern hemisphere (North America, Europe

  14. Breast health problems are rare in both HIV-infected and uninfected women supported to exclusively breastfeed in South Africa

    E-Print Network [OSTI]

    Boyer, Edmond

    to exclusively breastfeed in South Africa RM Bland1,2 , R Becquet1,3,4 , NC Rollins5 , A Coutsoudis5 , HM, Somkhele, South Africa 2 Division of Developmental Medicine, University of Glasgow, UK 3 INSERM, Unité 593Zulu Natal, South Africa 6 Centre for HIV/AIDS Networking, University of KwaZulu Natal, South Africa 7 Centre

  15. MSU at Work in Africa: Food and Agricultural Export

    E-Print Network [OSTI]

    MSU at Work in Africa: Food and Agricultural Export Value Chain Development The Challenge Global, and other high-value export products, small- and medium-scale producers have struggled to access these markets. Paving the way for these producers to supply high-value food and agricultural export markets

  16. Diseases of plantation forestry trees in eastern and southern Africa

    E-Print Network [OSTI]

    Diseases of plantation forestry trees in eastern and southern Africa J. Roux a*, G. Meke b , B are being allocated to the training of forestry staff andtreeimprovement.Theseefforts,aimedatstrengtheningthe forestry business, also embrace research on pests and diseases that might significantly reduce the value

  17. Capacity Building on Access to Energy in Africa: Final Report

    E-Print Network [OSTI]

    Capacity Building on Access to Energy in Africa: Final Report Danish Support to EUEI Facilitation from African partner organisations and individuals Title: Capacity Building on Access to Energy (Danish Ministry of Foreign Affairs) Cover: Solar home system installed at house near Chipata, Eastern

  18. africa policy guidelines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    africa policy guidelines First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Academic Policies and...

  19. MSU at Work in Africa: Land Use, Strategic Growth

    E-Print Network [OSTI]

    and processing of mineral resources, and the local housing construction industry are grossly untapped areas of Africa, excessive extraction of resources, including oil, coal, and natural gas, has resulted Raleigh Barlowe, land by itself creates little value; however, when combined with human, financial

  20. Recurrence plots from altimetry data of some lakes in Africa

    E-Print Network [OSTI]

    Amelia Carolina Sparavigna

    2014-07-02T23:59:59.000Z

    The paper shows recurrence plots obtained from time series of the level variations of four lakes in Africa (Nasser, Tana, Chad and Kainji). The data, coming from remote sensing, are provided by the United States Department of Agriculture. The recurrence plots allow a good visual comparison of the behaviours of local drainage basins.

  1. Recurrence plots from altimetry data of some lakes in Africa

    E-Print Network [OSTI]

    Sparavigna, Amelia Carolina

    2014-01-01T23:59:59.000Z

    The paper shows recurrence plots obtained from time series of the level variations of four lakes in Africa (Nasser, Tana, Chad and Kainji). The data, coming from remote sensing, are provided by the United States Department of Agriculture. The recurrence plots allow a good visual comparison of the behaviours of local drainage basins.

  2. MSU at Work in Africa: Safe Water and

    E-Print Network [OSTI]

    and lack of infrastructure for water and sewage systems have contributed to the global burden of waterborne Figure 1. Taken from Water for Life, Making It Happen­WHO/UNICEF 2005 Association between lackMSU at Work in Africa: Safe Water and Environmental Health Issues and Problems Water contamination

  3. Remote Sensing Applications for Sustainable Aquaculture in Africa

    E-Print Network [OSTI]

    Jiang, Wen

    Remote Sensing Applications for Sustainable Aquaculture in Africa Joseph E. Quansah1 , Gilbert L of the science with respect to remote sensing applications for aquaculture, including site location, aquaculture for multi-sensor remote sensing deployment to support sustainable fish production in these environments

  4. UNIVERSITY SURNAME FIRST NAME NATIONALITY EMAIL SEMESTER South Africa

    E-Print Network [OSTI]

    Jüttler, Bert

    Seoul National University Min Jungki Korea 2mjk0811[at]naver.com WS Mongolia National University of Mongolia Munkhbat Battulga Mongolia tuka_tulgaa[at]yahoo.com WS + SS Mongolian University of Science and Technology Boldtseren Solongo Mongolia solongo_216[at]yahoo.com WS + SS AFRICA ASIA #12;Taiwan National Sun

  5. Building Climate Smart Agriculture in Africa through Sustainable Development

    E-Print Network [OSTI]

    Tufts University

    ... stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous-frame sufficient to allow ecosystems to adapt naturally to climate change, to ensure that food production since 2004 Countries investing in agriculture in Africa include the United States, UK, Sweden, China

  6. Cost effective waste management through composting in Africa

    SciTech Connect (OSTI)

    Couth, R. [CRECHE, Centre for Environmental, Coastal and Hydrological Engineering, Civil Engineering Programme, School of Engineering, University of KwaZulu-Natal, Durban 4041 (South Africa); Trois, C., E-mail: troisc@ukzn.ac.za [CRECHE, Centre for Environmental, Coastal and Hydrological Engineering, Civil Engineering Programme, School of Engineering, University of KwaZulu-Natal, Durban 4041 (South Africa)

    2012-12-15T23:59:59.000Z

    Highlights: Black-Right-Pointing-Pointer The financial/social/institutional sustainability of waste management in Africa is analysed. Black-Right-Pointing-Pointer This note is a compendium of a study on the potential for GHG control via improved zero waste in Africa. Black-Right-Pointing-Pointer This study provides the framework for Local Authorities for realizing sustained GHG reductions. - Abstract: Greenhouse gas (GHG) emissions per person from urban waste management activities are greater in sub-Saharan African countries than in other developing countries, and are increasing as the population becomes more urbanised. Waste from urban areas across Africa is essentially dumped on the ground and there is little control over the resulting gas emissions. The clean development mechanism (CDM), from the 1997 Kyoto Protocol has been the vehicle to initiate projects to control GHG emissions in Africa. However, very few of these projects have been implemented and properly registered. A much more efficient and cost effective way to control GHG emissions from waste is to stabilise the waste via composting and to use the composted material as a soil improver/organic fertiliser or as a component of growing media. Compost can be produced by open windrow or in-vessel composting plants. This paper shows that passively aerated open windrows constitute an appropriate low-cost option for African countries. However, to provide an usable compost material it is recommended that waste is processed through a materials recovery facility (MRF) before being composted. The paper demonstrates that material and biological treatment (MBT) are viable in Africa where they are funded, e.g. CDM. However, they are unlikely to be instigated unless there is a replacement to the Kyoto Protocol, which ceases for Registration in December 2012.

  7. Product Quality Assurance for Off-Grid Lighting in Africa

    SciTech Connect (OSTI)

    World Bank; Mills, Evan; Mills, Evan

    2008-07-13T23:59:59.000Z

    Although the emergence of markets for high efficiency off-grid lighting technologies holds promise, realizing the potential of this opportunity on a long-term, sustainable basis requires careful attention to issues of product quality, consumer protection, and the potential for significant 'market spoiling', in anticipation of increases of sales of low cost, low performance off-grid lighting products. The goal of the Lighting Africa quality assurance workshop was to articulate strategies to mitigate the dangers of market spoiling and to explore ways to protect consumers from misleading advertising for sales of inferior, off-grid lighting products in the context of Lighting Africa's overarching objective to support the industry in developing a robust off-grid lighting market in Africa. The workshop resulted in the identification of two strategic approaches for meeting Lighting Africa quality assurance programmatic needs. The first strategy is intended to meet a short-term programmatic need for quality associated with requests for lighting products by bulk procurement agents, such as in a World Bank-financed project. The development of procurement specifications and test procedures that could be used in a quality/usability screening method in order to provide guidance for forthcoming large volume purchases emerged as the best solution to meet this need. Such approaches are used in World Bank-financed solar home systems (SHSs) projects in Bangladesh, Sri Lanka, and China, among others. However, unlike the SHSs which have multiple balance-of-system (BOS) components warranting the need for an array of specifications for individual components, stand alone lighting systems require specifications that are amenable to individual light points. To test this approach, Lighting Africa elected to use the technical specifications issued by the Photovoltaic Global Approval Program for solar lanterns that use CFL bulbs (PVRS11A) as the basis of qualifying such products. A contract has been competitively awarded to the Global Approval Program for Photovoltaics (PV GAP) under the Lighting Africa Program to select and test ten solar lantern product models. Lantern selection will be determined based on a number of criteria, among them, the ability to provide a daily duty cycle of at least 3 hours of light, the number of days of autonomy of battery, the volume of sales (especially in Africa), and whether or not the manufacturing facility is ISO 9000 certified. Those that are confirmed as meeting the specifications may be eligible to receive a PVGAP quality seal. The work is being carried out in partnership with the Photovoltaic and Wind Quality Test Center in Beijing, China and TUV Rhineland in Koeln, Germany. As off-grid LED-based stand-alone lighting products is in a nascent stage of development compared to CFL-based lanterns, Lighting Africa will support the development of a 'Quality Screening' approach to selecting LED lighting, in order not to delay consumers benefiting from such advances. The screening methodology could be used by procurement agencies to qualify LED lighting products for bulk or programmatic procurements. The main elements of this work comprises of developing a procurement specification and test procedure for undertaking a 'quick' quality/usability screening to be used for procuring LED lights and to test up to 30 LED-based lights to screen products that meet the requirement. The second strategy is intended to meet a longer-term need associated with creating a self-sustaining product quality assurance program that will effectively protect the African consumer, prevent significant market spoiling, adapt with expected technological advancements over the long-term--in other words, give consumers the ability to detect quality products and the information needed to find products that meet their specific needs from among the myriad of lighting products that become available commercially. Workshop discussions and the discussions evolving from the workshop led the Lighting Africa team to opt for an approach similar to that of th

  8. Climate and Land Use Change Processes in East Africa While some regions of East Africa are being preserved as natural areas, others, including the

    E-Print Network [OSTI]

    Climate and Land Use Change Processes in East Africa While some regions of East Africa are being to agriculture. Some members of the Maasai tribe, traditionally a pastoral people, are changing to changes in climate. The land use box will involve further modeling of the effects of these concurrent

  9. Climate mitigation and the future of tropical landscapes

    SciTech Connect (OSTI)

    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

    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.

  10. Waste management activities and carbon emissions in Africa

    SciTech Connect (OSTI)

    Couth, R. [University of KwaZulu-Natal, CRECHE, School of Civil Engineering, Survey and Construction, Durban 4041 (South Africa); Trois, C., E-mail: troisc@ukzn.ac.za [University of KwaZulu-Natal, CRECHE, School of Civil Engineering, Survey and Construction, Durban 4041 (South Africa)

    2011-01-15T23:59:59.000Z

    This paper summarizes research into waste management activities and carbon emissions from territories in sub-Saharan Africa with the main objective of quantifying emission reductions (ERs) that can be gained through viable improvements to waste management in Africa. It demonstrates that data on waste and carbon emissions is poor and generally inadequate for prediction models. The paper shows that the amount of waste produced and its composition are linked to national Gross Domestic Product (GDP). Waste production per person is around half that in developed countries with a mean around 230 kg/hd/yr. Sub-Saharan territories produce waste with a biogenic carbon content of around 56% (+/-25%), which is approximately 40% greater than developed countries. This waste is disposed in uncontrolled dumps that produce large amounts of methane gas. Greenhouse gas (GHG) emissions from waste will rise with increasing urbanization and can only be controlled through funding mechanisms from developed countries.

  11. Oil and gas developments in North Africa in 1986

    SciTech Connect (OSTI)

    Michel, R.C.

    1987-10-01T23:59:59.000Z

    Licensed oil acreage in the 6 North Africa countries (Algeria, Egypt, Libya, Morocco, Sudan and Tunisia) totaled 1,500,000 km/sup 2/ at the end of 1986, down 290,000 km/sup 2/ from 1985. About 50% of the relinquishments were in Libya. Most oil and gas discoveries were made in Egypt (16 oil and 2 gas). Several oil finds were reported in onshore Libya, and 1 was reported in Algeria in the southeastern Sahara. According to available statistics, development drilling decreased from 1985 levels, except in Tunisia. A 6.3% decline in oil production took place in 1986, falling below the 3 million bbl level (2,912,000 b/d). Only sparse data are released on the gas output in North Africa. 6 figures, 27 tables.

  12. Africa planned gas lines will meet future demand

    SciTech Connect (OSTI)

    Not Available

    1991-11-01T23:59:59.000Z

    The burgeoning European market for natural gas is expected to create major gas line construction. The potential for North Africa looks particularly promising in 1991. Italy's ENI has proposed a 6,000-km (3,728-mi) gas network in North Africa to connect gas-rich Libya and Algeria with Morocco and Mauritania, making large volumes available to the European market. According to the proposal, a gas line would run from the Sirte Basin in Libya west to Mauritania. Extending the line eastward through Egypt and on to the Arabian Peninsula would provide export access. In this paper initial studies are examine reserve projections for the next 20 years, then based on results, a transmission/distribution network will be designed, including an offshore gathering system.

  13. Oil and gas developments in north Africa in 1987

    SciTech Connect (OSTI)

    Popescu, B.M.

    1988-10-01T23:59:59.000Z

    The recovery of international petroleum activity in 1987 was reflected slightly in the 6 North Africa countries covered in this report (Algeria, Egypt, Libya, Morocco, Sudan, and Tunisia). Licensed area increased marginally to about 2,594,000 km/sup 2/ (up 0.5% from 1986), whereas surface exploration and drilling decreased significantly (about 30% and 20%, respectively, from 1986 levels). The two OPEC-member countries adhered to imposed quotas, recording somewhat lower production levels in 1987 than in 1986; however, total production of the North Africa countries increased to 3,025,000 BOPD (up 2% from 1986) as Egypt recorded all-time highs for both liquids and natural gas production. 7 figs., 29 tabs.

  14. High temperature solar thermal technology: The North Africa Market

    SciTech Connect (OSTI)

    Not Available

    1990-12-01T23:59:59.000Z

    High temperature solar thermal (HTST) technology offers an attractive option for both industrialized and non-industrialized countries to generate electricity and industrial process steam. The purpose of this report is to assess the potential market for solar thermal applications in the North African countries of Algeria, Egypt, Morocco and Tunisia. North Africa was selected because of its outstanding solar resource base and the variety of applications to be found there. Diminishing oil and gas resources, coupled with expanding energy needs, opens a large potential market for the US industry. The US high temperature solar trough industry has little competition globally and could build a large market in these areas. The US is already familiar with certain solar markets in North Africa due to the supplying of substantial quantities of US-manufactured flat plate collectors to this region.

  15. S. Africa: ESKOM's Massive investment hits new snag

    SciTech Connect (OSTI)

    NONE

    2008-08-15T23:59:59.000Z

    ESKOM, the government-owned company that generates nearly 95 percent of the power in South Africa, has been facing serious capacity shortages for some time, forcing it to resort to mandatory rationing of major industrial users and occasional outages. A combination of rapid economic growth and chronic underinvestment in infrastructure resulted in the disappearance of a once plentiful capacity surplus. Considerable rate increases and emphasis on conservation are planned.

  16. Radio astronomy in Africa: the case of Ghana

    E-Print Network [OSTI]

    Asabere, Bernard Duah; Horellou, Cathy; Winkler, Hartmut; Jarrett, Thomas

    2015-01-01T23:59:59.000Z

    South Africa has played a leading role in radio astronomy in Africa with the Hartebeesthoek Radio Astronomy Observatory (HartRAO). It continues to make strides with the current seven-dish MeerKAT precursor array (KAT-7), leading to the 64-dish MeerKAT and the giant Square Kilometer Array (SKA), which will be used for transformational radio astronomy research. Ghana, an African partner to the SKA, has been mentored by South Africa over the past six years and will soon emerge in the field of radio astronomy. The country will soon have a science-quality 32m dish converted from a redundant satellite communication antenna. Initially, it will be fitted with 5 GHz and 6.7 GHz receivers to be followed later by a 1.4 - 1.7 GHz receiver. The telescope is being designed for use as a single dish observatory and for participation in the developing African Very Long Baseline Interferometry (VLBI) Network (AVN) and the European VLBI Network. Ghana is earmarked to host a remote station during a possible SKA Phase 2. The loca...

  17. Regional stratigraphy and petroleum geology, North Africa-Middle East

    SciTech Connect (OSTI)

    Peterson, J.A. (Univ. of Montana, Missoula (United States))

    1991-03-01T23:59:59.000Z

    The North Africa-Middle East petroleum provinces are part of the broad sedimentary platform that occupied the northern and northeastern borders of the African-Arabian craton adjacent to the ancestral Hercynian (late Paleozoic) and subsequent Tethyan-Alpine oceans. Carbonate-clastic-evaporite sediments of infra-Cambrian through Holocene age were cyclically deposited in a relatively continuous belt around the eastern and northern borders of the craton, mainly on a broad, shallow-water platform adjacent to the proto-Tethys and Tethys seaway. The Paleozoic section reaches a substantial thickness in the subsurface of the Middle East and in northern Africa adjacent to the Mediterranean Sea, but all or part of it is absent because of nondeposition or erosion over much of the region. Post-Paleozoic deposition was more or less continuous across the entire craton border region in the Middle East and along the northern border of the Sahara platform in North Africa and in Somalia and eastern Ethiopia. Similar marine and associated sedimentary rock facies are present in all of these regions, although paleotectonic-stratigraphic interrelationships and continental paleolatitude positions have greatly affected petroleum generation and accumulation in the specific provinces along the craton border. A series of regional stratigraphic-sedimentary environment, and continental position, layer maps illustrates the relative influence of these factors through geologic time with respect to the relationship between petroleum reservoirs, source rocks, and confining rock facies.

  18. A high glacier opens a view of the ice age tropics

    SciTech Connect (OSTI)

    Mlot, C.

    1995-07-07T23:59:59.000Z

    This article discusses new information about the ice age tropics as cores from a mountain glacier in the Peruvian Andes are analysed. Chemical markers in the ice of the two cores (160 and 166 meters long), covering 20,000 years, are starting to provide detailed support for understanding the ice age in the tropics. they show that climate in the tropics experience sharp oscillations at the end of the ice ages as it did in more northerly regions. Information about El Ninos and how the tropics respond to global climate changes is forthcoming. Comments on the actual expedition to obtain the ice cores are included.

  19. New records of the Cryphonectriaceae from southern Africa including Latruncellus aurorae gen. sp. nov.

    E-Print Network [OSTI]

    New records of the Cryphonectriaceae from southern Africa including Latruncellus aurorae gen. sp, Latruncellus aurorae gen. sp. nov., is described from Galpinia transvaalica (Lythraceae, Myrtales) in Swazi

  20. africa pretoria 20-23: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AND OTHER ALIEN INVASIVE SPECIES IN AFRICA Clement Chilima FISNA Secretariat, Forestry Research to be protected from the impact of alien invasive species for the good of...

  1. South Africa and the 21st Century Power Partnership (Fact Sheet...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    with energy efficiency and smart grid deployment measures. * Assist the Government of South Africa to build a workforce of power system experts through dedicated workshops and...

  2. Global Climate Change, Developing Countries and Transport Sector Options in South Africa

    E-Print Network [OSTI]

    2000-01-01T23:59:59.000Z

    South Africa (MSA) Action Agenda (May 1999) 36 Main policy thrusts .36 Key strategic issues..37 Key initiatives38 White Paper on Energy Policy (

  3. Third international conference of the Association of Geophysicists in Exploration and Research in Africa (Abstracts)

    SciTech Connect (OSTI)

    Not Available

    1987-01-01T23:59:59.000Z

    This conference brings together diverse papers devoted to geophysics and exploration in Africa. There are more than fifty papers represented including papers on uranium and hydrology.

  4. E-Print Network 3.0 - africa 2007-2009 systematic Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Political Economy (Politics 381) Spring 2005, 2007, Fall 2009... Spring 2008 Politics & Media in Africa Spring 2006 (Senegal) African Politics Fall 2005 Race & Nation... Fiscal...

  5. An Overview of Accountability Mechanisms in Public - Private Partnerships in South Africa

    E-Print Network [OSTI]

    Fombad, Madeleine

    2013-01-01T23:59:59.000Z

    September 10, 2012). UN Global Compact Network South Africa.standards are the UN Global Compact (2009), the Organisationby joining the UN Global Compact. Amongst these are Sasol,

  6. U.S. and South Africa Hold Bilateral Discussion on Building a...

    Broader source: Energy.gov (indexed) [DOE]

    and South Africa are working to deliver concrete results that grow our economies through sustainable energy development and enhance our energy security," said U.S. Deputy...

  7. Sequence stratigraphic development of the Neoarchean Transvaal carbonate platform, Kaapvaal Craton, South Africa

    E-Print Network [OSTI]

    Sumner, Dawn Y.; Beukes, Nicolas J

    2006-01-01T23:59:59.000Z

    Journal of Sedimentary Petrology, 45, 604-614. Eriksson,South Africa. Journal of Petrology, 38, 651-676. Pickard,1997). Mineralogy and petrology of the contact metamorphosed

  8. Anvil characteristics as seen by C-POL during the Tropical Warm Pool International Cloud Experiment (TWP-ICE)

    E-Print Network [OSTI]

    Frederick, Kaycee Loretta

    2007-04-25T23:59:59.000Z

    The Tropical Pacific Warm Pool International Cloud Experiment (TWP-ICE) took place in Darwin, Australia in early 2006. C-band radar data from this experiment were used to characterize tropical anvil areal coverage, height, and thickness during...

  9. The Influence of El Nin~oSouthern Oscillation and the Atlantic Multidecadal Oscillation on Caribbean Tropical Cyclone Activity

    E-Print Network [OSTI]

    Gray, William

    on Caribbean Tropical Cyclone Activity PHILIP J. KLOTZBACH Department of Atmospheric Science, Colorado State Caribbean basin tropical cyclone activity shows significant variability on interannual as well as multidecadal time scales. Comprehensive statistics for Caribbean hurricane activity are tabulated

  10. The occurrence and diversity of tree legumes as influenced by soil properties in selected tropical forests in Costa Rica

    E-Print Network [OSTI]

    Wesch, Richard Albert

    1999-01-01T23:59:59.000Z

    Legumes play important roles in tropical forests due to their contribution to N?-fixation and nutrient cycling. Our objectives were to determine which soil properties, if any, affect the occurrence and distribution of tree legumes in a tropical wet...

  11. Vertical Structure of Tropical Cyclone Rainbands as Seen by the TRMM Precipitation Radar

    E-Print Network [OSTI]

    Houze Jr., Robert A.

    Vertical Structure of Tropical Cyclone Rainbands as Seen by the TRMM Precipitation Radar DEANNA A Measurement Mission satellite's Precipitation Radar (TRMM PR) show the vertical structure of tropical cyclone separated by the melting layer. The ice layer is a combination of particles imported from the eyewall

  12. Validating Atmospheric Reanalysis Data Using Tropical Cyclones as Thermometers James P. Kossin

    E-Print Network [OSTI]

    Kossin, James P.

    1 Validating Atmospheric Reanalysis Data Using Tropical Cyclones as Thermometers James P. Kossin 2014; accepted 15 October 2014) If you would like to cite the Early Online Release in a separate work tropical cyclones as thermometers. Bull. Amer. Meteor. Soc. doi:10.1175/BAMS-D-14-00180, in press. Capsule

  13. Influence of local and remote SST on North Atlantic tropical cyclone potential intensity

    E-Print Network [OSTI]

    Camargo, Suzana J.

    Influence of local and remote SST on North Atlantic tropical cyclone potential intensity Suzana J of local and remote sea surface temperature (SST) on the tropical cyclone potential intensity in the North Atlantic using a suite of model simulations, while separating the impact of anthropogenic (external

  14. The increasing intensity of the strongest tropical James B. Elsner1

    E-Print Network [OSTI]

    Kossin, James P.

    cyclones. We note separate upward trends in the estimated lifetime-maximum wind speeds of the veryLETTERS The increasing intensity of the strongest tropical cyclones James B. Elsner1 , James P. Kossin2 & Thomas H. Jagger1 Atlantic tropical cyclones are getting stronger on average, with a 30-year

  15. Sensitivity of an Ocean-Atmosphere Coupled Model to the Coupling Method : Study of Tropical Cyclone

    E-Print Network [OSTI]

    Recanati, Catherine

    Sensitivity of an Ocean-Atmosphere Coupled Model to the Coupling Method : Study of Tropical Cyclone) in a realistic configuration aiming at simulating the genesis and propagation of tropical cyclone Erica and Oceanic Coupled Models (AOCMs) which account for important air-sea feedbacks. Separate integrations

  16. Tropical Cyclone and Monsoon-Induced Rainfall Variability in Taiwan JAU-MING CHEN

    E-Print Network [OSTI]

    Li, Tim

    Tropical Cyclone­ and Monsoon-Induced Rainfall Variability in Taiwan JAU-MING CHEN Institute March 2010) ABSTRACT This study investigates the interannual variability of tropical cyclone (TC the relative effects of TCs and monsoons, local rainfall in Taiwan is separated into two subcomponents: TC

  17. Modulation of North Pacific Tropical Cyclone Activity by the2 Three Phases of ENSO3

    E-Print Network [OSTI]

    Webster, Peter J.

    1 1 Modulation of North Pacific Tropical Cyclone Activity by the2 Three Phases of ENSO3 4 Hye-Mail: hyemi.kim@eas.gatech.edu29 30 #12;2 Abstract30 Pacific Ocean warming has been separated into two modes (EPC), these three regimes are shown to have different impacts on34 tropical cyclone activity over

  18. Use of a Genesis Potential Index to Diagnose ENSO Effects on Tropical Cyclone Genesis

    E-Print Network [OSTI]

    Sobel, Adam

    Use of a Genesis Potential Index to Diagnose ENSO Effects on Tropical Cyclone Genesis SUZANA J influence on tropical cyclone activity. The authors examine how different environmental factors contribute. Composite anomalies of the genesis potential index are produced for El Niño and La Niña years separately

  19. Sensitivity of Ocean-Atmosphere Coupled Models to the Coupling Method : Example of Tropical Cyclone

    E-Print Network [OSTI]

    Sensitivity of Ocean-Atmosphere Coupled Models to the Coupling Method : Example of Tropical Cyclone and propagation of tropical cyclone Erica. Sensitiv- ity tests to the coupling method are carried out-sea feedbacks. Separate integrations of the Corresponding author. Phone: +33 (0)4 76 51 48 60 Fax: +33 (0)4 76

  20. Vertical Structure of Tropical Cyclone Rainbands as seen by the TRMM Precipitation Radar

    E-Print Network [OSTI]

    Houze Jr., Robert A.

    1 Vertical Structure of Tropical Cyclone Rainbands as seen by the TRMM Precipitation Radar Deanna A (TRMM PR) show the vertical structure of tropical cyclone rainbands. Radar-echo2 statistics show that rainbands have a two-layered structure, with distinct modes separated by the3 melting layer. The ice layer

  1. Vertical Structure of Tropical Cyclone Rainbands as seen by the TRMM Precipitation Radar

    E-Print Network [OSTI]

    Houze Jr., Robert A.

    1 Vertical Structure of Tropical Cyclone Rainbands as seen by the TRMM Precipitation Radar Deanna A's Precipitation Radar (TRMM PR) show the vertical structure of tropical cyclone rainbands. Radar-echo statistics show that rainbands have a two-layered structure, with distinct modes separated by the melting layer

  2. A Climatology of Tropical Anvil and Its Relationship to the Large-Scale Circulation 

    E-Print Network [OSTI]

    Li, Wei

    2011-02-22T23:59:59.000Z

    of anvil formation, and to provide a more realistic assessment of the radiative impact of tropical anvil on the large-scale circulation. Based on 10 years (1998-2007) of observations, anvil observed by the Tropical Rainfall Measuring Mission (TRMM...

  3. Changes in the Ventilation of the Oxygen Minimum Zone of the Tropical North Atlantic

    E-Print Network [OSTI]

    Changes in the Ventilation of the Oxygen Minimum Zone of the Tropical North Atlantic PETER BRANDT) ABSTRACT Changes in the ventilation of the oxygen minimum zone (OMZ) of the tropical North Atlantic centimeters per second in the depth range of the OMZ contribute to the ventilation of the OMZ. A conceptual

  4. Tropical ozone as an indicator of deep convection Ian Folkins and Christopher Braun

    E-Print Network [OSTI]

    Folkins, Ian

    Tropical ozone as an indicator of deep convection Ian Folkins and Christopher Braun Department] The climatological ozone profile in the tropics is shaped like an ``S,'' with a minimum at the surface, a maximum. These features can be reproduced by a very simple model whose only free parameter is the mean ozone mixing ratio

  5. Effects of ozone cooling in the tropical lower stratosphere and upper troposphere

    E-Print Network [OSTI]

    Effects of ozone cooling in the tropical lower stratosphere and upper troposphere Piers M. Forster lower stratosphere and upper troposphere and elucidate the key role of ozone changes in driving of tropical ozone decreases at 70 hPa and lower pressures can lead to significant cooling not only

  6. SCALAR WIND SPEED AND DIRECTION TROPICAL CYCLONE RETRIEVALS FOR CONICAL SCANNING SCATTEROMETERS

    E-Print Network [OSTI]

    Hennon, Christopher C.

    SCALAR WIND SPEED AND DIRECTION TROPICAL CYCLONE RETRIEVALS FOR CONICAL SCANNING SCATTEROMETERS--Scatterometer measurements of ocean vector winds (OVW) are significantly degraded in the presence of the precipitation, especially in tropical cyclones. This paper presents a new ocean hurricane/typhoon wind vector retrieval

  7. SUMMARY OF 2007 ATLANTIC TROPICAL CYCLONE ACTIVITY AND VERIFICATION OF AUTHOR'S SEASONAL AND MONTHLY FORECASTS

    E-Print Network [OSTI]

    Gray, William

    10 12.25 8 5.75 Accumulated Cyclone Energy (ACE) (96.2) 130 170 170 150 148 100 68 Net Tropical't press us too hard on future events!!" 3 #12;DEFINITIONS Accumulated Cyclone Energy ­ (ACE) A measureSUMMARY OF 2007 ATLANTIC TROPICAL CYCLONE ACTIVITY AND VERIFICATION OF AUTHOR'S SEASONAL

  8. Influence of Western North Pacific Tropical Cyclones on Their Large-Scale Environment

    E-Print Network [OSTI]

    Sobel, Adam

    water vapor, and sea surface tem- perature (SST)] on an index of TC activity [accumulated cyclone energyInfluence of Western North Pacific Tropical Cyclones on Their Large-Scale Environment ADAM H. SOBEL) tropical cyclones (TCs) on their large-scale environment by lag regressing various large-scale climate

  9. Co-variability of tropical cyclones in the North Atlantic and the eastern North Pacific

    E-Print Network [OSTI]

    Wang, Chunzai

    of accumulated cyclone energy (ACE) in the ENP. Therefore, we calculate the NA and ENP ACE indices by summingCo-variability of tropical cyclones in the North Atlantic and the eastern North Pacific Chunzai; published 30 December 2009. [1] In the Western Hemisphere, tropical cyclones (TCs) can form and develop

  10. Stoichiometry of nutrient recycling by vertebrates in a tropical stream: linking species identity and

    E-Print Network [OSTI]

    Flecker, Alex

    REPORT Stoichiometry of nutrient recycling by vertebrates in a tropical stream: linking species in recycling nutrients, thus providing a mechanism for how animal species identity mediates ecosystem processes) recycled nitrogen (N) and phosphorus (P) in a tropical stream supports stoichiometry theory. Mass

  11. Characterization of Throughfall Heterogeneity in a Tropical Pre-Montane Could Forest in Costa Rica

    E-Print Network [OSTI]

    Berger, Amelie Cecile

    2013-09-26T23:59:59.000Z

    CHARACTERIZATION OF THROUGHFALL HETEROGENEITY IN A TROPICAL PRE-MONTANE CLOUD FOREST IN COSTA RICA An Undergraduate Research Scholars Thesis by AMELIE CECILE BERGER Submitted to Honors and Undergraduate Research Texas A... .......................................................................................................4 Tropical forest hydrology ........................................................................................7 Study site: watershed near San Isidro, Costa Rica .................................................13 Quantification...

  12. Stem respiration in tropical forests along an elevation gradient in the Amazon and Andes

    E-Print Network [OSTI]

    Malhi, Yadvinder

    Stem respiration in tropical forests along an elevation gradient in the Amazon and Andes A M A N D metabolism, resulting in the release of carbon dioxide as a by-product. Little is known of how autotrophic respiration components vary across environmental gradients, particularly in tropical ecosystems. Here, we

  13. Shipboard Measurements and Estimations of AirSea Fluxes in the Western Tropical Pacific Ocean

    E-Print Network [OSTI]

    California at Irvine, University of

    Ship­board Measurements and Estimations of Air­Sea Fluxes in the Western Tropical Pacific Ocean E dur­ ing the Tropical Ocean Global Atmosphere (TOGA) Coupled Ocean and Atmospheric Response of the surface­layer turbulence properties are compared with those from previous land and ocean results. Momentum

  14. Intermediate Zonal Jets in the Tropical Pacific Ocean Observed by Argo Floats* SOPHIE CRAVATTE

    E-Print Network [OSTI]

    Boyer, Edmond

    Intermediate Zonal Jets in the Tropical Pacific Ocean Observed by Argo Floats* SOPHIE CRAVATTE´veloppement, LEGOS, Toulouse, France WILLIAM S. KESSLER National Oceanic and Atmospheric Administration/Pacific Argo float data in the tropical Pacific Ocean during January 2003­August 2011 are analyzed to obtain

  15. Relative timing of last glacial maximum and late-glacial events in the central tropical Andes

    E-Print Network [OSTI]

    Winckler, Gisela

    , and CO2. Moreover, as the energetic powerhouse of the earth, the tropics have huge potential to trigger shifts in tropical temperature and precipitation during the Late Pleistocene (ice-core data: Thompson et al., 1995, 1998; lake-core data: Baker et al., 2001a, b; glacial-geologic data: Smith et al., 2005a

  16. Large CO2 disequilibria in tropical lakes Humberto Marotta,1,2

    E-Print Network [OSTI]

    Wehrli, Bernhard

    Large CO2 disequilibria in tropical lakes Humberto Marotta,1,2 Carlos M. Duarte,2 Sebastian Sobek,3 November 2009. [1] On the basis of a broad compilation of data on pCO2 in surface waters, we show tropical lakes to be, on average, far more supersaturated and variable in CO2 (geometric mean ± SE pCO2 = 1804

  17. Isentropic Slopes, Downgradient Eddy Fluxes, and the Extratropical Atmospheric Circulation Response to Tropical Tropospheric Heating

    E-Print Network [OSTI]

    to Tropical Tropospheric Heating AMY H. BUTLER NOAA/NWS/NCEP/Climate Prediction Center, Camp Springs, Maryland of the midlatitude jets and their associated eddy fluxes of heat and potential vorticity (PV). Experiments run latent heating and thus locally enhanced warming in the tropical troposphere. Here the authors provide

  18. Thermodynamics of tropical cyclogenesis in the northwest Pacific D. J. Raymond,1

    E-Print Network [OSTI]

    Raymond, David J.

    Thermodynamics of tropical cyclogenesis in the northwest Pacific D. J. Raymond,1 S. L. Sessions,1 and thermodynamic products were derived from dropsonde and airborne Doppler radar data, with the goal of increasing: Raymond, D. J., S. L. Sessions, and C. López Carrillo (2011), Thermodynamics of tropical cyclogenesis

  19. The Intraseasonal Oscillation and the Energetics of Summertime Tropical Western North Pacific

    E-Print Network [OSTI]

    Maloney, Eric

    The Intraseasonal Oscillation and the Energetics of Summertime Tropical Western North Pacific University of New York Albany, New York Journal of the Atmospheric Sciences Submitted October 14, 2002 the energetics of tropical depression (TD)-type disturbances. An energetics analysis is conducted with NCEP

  20. In sacco degradation of eight tropical forages BP Widyobroto, S Padmowijoto, R Utomo M Soejono

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    In sacco degradation of eight tropical forages BP Widyobroto, S Padmowijoto, R Utomo M Soejono was conducted to compare the protein degradation of eight Indonesian tropical forages in the rumen. Three adult degradation of Pueraria phase- oloides (Pp), Centrosema pubescens (Cp),), Calopogonium muconoides (Cm

  1. Final Progress Report [Testing Climate Model Simulations of Tropical Cirrus Lifecycles: A Lagrangian

    SciTech Connect (OSTI)

    Soden, Brian J

    2009-06-30T23:59:59.000Z

    This project integrates ARM data sets with satellite observations and model simulations to improve the representation of tropical cloud systems in climate models. We focus on describing and understanding relevant features of the lifecycle of tropical cirrus cloud systems using an innovative method which combines the Eulerian-based ARM measurements with Lagrangian information from geostationary satellites.

  2. Are tropical fungal endophytes hyperdiverse? Fungal endophytes are ubiquitous fungi that inhabit healthy plant tissues without

    E-Print Network [OSTI]

    California at Berkeley, University of

    Are tropical fungal endophytes hyperdiverse? Abstract Fungal endophytes are ubiquitous fungi that inhabit healthy plant tissues without causing disease. Endophytes have been found in every plant species sites in a lowland, moist tropical forest of central Panama, we quantified endophyte colonization

  3. Characterizing a tropical deforestation wave: a dynamic spatial analysis of a deforestation hotspot in the

    E-Print Network [OSTI]

    Queensland, University of

    Characterizing a tropical deforestation wave: a dynamic spatial analysis of a deforestation hotspot deforestation is the major contemporary threat to global biodiversity, because a diminishing extent of tropical of deforestation. How- ever, it is not a random process, but often moves in waves originating from settled areas

  4. Fluctuations of glaciers in the tropical Andes over the last millennium and palaeoclimatic implications: A review

    E-Print Network [OSTI]

    Rabatel, Antoine

    Ice, Quito, Ecuador a b s t r a c ta r t i c l e i n f o Article history: Received 23 June 2007 millennium Palaeoclimatic conditions Solar activity Volcanism El Niño-Southern Oscillation (ENSO) The aim outer tropics) and around AD 1730 in Ecuador, Colombia and Venezuela (the inner tropics). Subsequently

  5. Mesoscale Simulation of Tropical Cyclones in the South Pacific: Climatology and Interannual Variability

    E-Print Network [OSTI]

    Mesoscale Simulation of Tropical Cyclones in the South Pacific: Climatology and Interannual is shown to reproduce a wide range of mesoscale convective systems. Tropical cyclones grow from the most related to mesoscale in- teractions, which also affect TC tracks and the resulting occurrence. 1

  6. THE EXTENT AND CAUSES OF ILLEGAL LOGGING: AN ANALYSIS OF A MAJOR CAUSE OF TROPICAL

    E-Print Network [OSTI]

    THE EXTENT AND CAUSES OF ILLEGAL LOGGING: AN ANALYSIS OF A MAJOR CAUSE OF TROPICAL DEFORESTATION IN INDONESIA by Charles E. Palmer CSERGE Working Paper http://www.cserge.ucl.ac.uk/Illegal_Logging.pdf #12;2 THE EXTENT AND CAUSES OF ILLEGAL LOGGING: AN ANALYSIS OF A MAJOR CAUSE OF TROPICAL DEFORESTATION IN INDONESIA

  7. The relative importance of tropical variability forced from the North Pacific through ocean pathways

    E-Print Network [OSTI]

    Solomon, Amy

    forced through the atmosphere? To address this question, in this study we use an anomaly-coupled model), and with coupling con- fined to the Tropics and wind stress and heat fluxes in the North Pacific specified by output impact the tropics through ocean pathways. These two signals are forced by wind stress and surface heat

  8. 1 Introduction In many soils of the tropics the nutrient losses by leaching

    E-Print Network [OSTI]

    Lehmann, Johannes

    in soil poses considerable technical problems. For quantifying nutrient losses by seepage a variety1 Introduction In many soils of the tropics the nutrient losses by leaching exceed the inputs in humid tropical lowlands (Williams et al., 1997). These losses need to be reduced for sustainable

  9. Climate change and tropical Andean glaciers: Past, present and future Mathias Vuille a,b,

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    , Peru and Bolivia give a detailed and unequivocal account of rapid shrinkage of tropical Andean glaciers the tropical glacier energy balance through its sensitivity to changes in atmospheric humidity (which governs influences the energy balance, albeit not through the sensible heat flux, but indirectly through fluctuations

  10. Rapid transport of East Asian pollution to the deep tropics

    E-Print Network [OSTI]

    Ashfold, M. J.; Pyle, J. A.; Robinson, A. D.; Nadzir, M. S. M.; Phang, S. M.; Samah, A. A.; Ong, S.; Ung, H. E.; Peng, L. K.; Yong, S. E.; Harris, N. R. P.

    2014-12-05T23:59:59.000Z

    ., 2003; Hudman et al., 2004). East Asian pollution has also been shown to affect atmospheric composition further afield,25 in both western North America (Cooper et al., 2010) and Hawaii (Lin et al., 2014). 30707 ACPD 14, 30705–30726, 2014 Rapid transport... – 2010, doi:10.1029/95JD00025, 1996. 30707 Aschmann, J., Sinnhuber, B.-M., Atlas, E. L., and Schauffler, S. M.: Modeling the transport of very short-lived substances into the tropical upper troposphere and lower stratosphere,10 Atmos. Chem. Phys., 9, 9237...

  11. A Model Evaluation Data Set for the Tropical ARM Sites

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jakob, Christian

    This data set has been derived from various ARM and external data sources with the main aim of providing modelers easy access to quality controlled data for model evaluation. The data set contains highly aggregated (in time) data from a number of sources at the tropical ARM sites at Manus and Nauru. It spans the years of 1999 and 2000. The data set contains information on downward surface radiation; surface meteorology, including precipitation; atmospheric water vapor and cloud liquid water content; hydrometeor cover as a function of height; and cloud cover, cloud optical thickness and cloud top pressure information provided by the International Satellite Cloud Climatology Project (ISCCP).

  12. Atmospheric Radiation Measurement Tropical Warm Pool International Cloud Experiment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProductsAlternativeOperational ManagementDemand Module ThisAtAugust2Tropical Warm

  13. ARM - Publications: Science Team Meeting Documents: Tropical Cloud Overlap

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa-Anomalous Radiative AbsorptionARM InArctic Facilityandof tropical

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

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa-Anomalous Radiative AbsorptionARM InArctic Facilityandof tropicalInternational Cloud

  15. Proper orthogonal decomposition approach and error estimation of mixed finite element methods for the tropical Pacific Ocean

    E-Print Network [OSTI]

    Navon, Michael

    for the tropical Pacific Ocean reduced gravity model Zhendong Luo a , Jiang Zhu b , Ruiwen Wang b , I.M. Navon c Available online 8 May 2007 Abstract In this paper, the tropical Pacific Ocean reduced gravity model and the insufficient knowledge of air­sea exchange processes. The tropical Pacific Ocean reduced gravity model

  16. Mechanisms of Remote Tropical Surface Warming during El Nio JOHN C. H. CHIANG AND BENJAMIN R. LINTNER

    E-Print Network [OSTI]

    Lintner, Benjamin Richard

    temperature) for the remote tropical surface warming. Over the remote oceans, latent heat flux acting throughMechanisms of Remote Tropical Surface Warming during El Niño JOHN C. H. CHIANG AND BENJAMIN R.10) simulations of the 1997/98 El Niño that the observed "remote" (i.e., outside the Pacific) tropical land

  17. Role of ocean-atmosphere interactions in tropical cooling during the last glacial maximum

    SciTech Connect (OSTI)

    Bush, A.B.G. [Univ. of Alberta, Edmonton (Canada)] [Univ. of Alberta, Edmonton (Canada); Philander, S.G.H. [Princeton Univ., NJ (United States)] [Princeton Univ., NJ (United States)

    1998-02-27T23:59:59.000Z

    A simulation with a coupled atmosphere-ocean general circulation model configured for the Last Glacial Maximum delivered a tropical climate that is much cooler than that produced by atmosphere-only models. The main reason is a decrease in tropical sea surface temperatures, up to 6{degree}C in the western tropical Pacific, which occurs because of two processes. The trade winds induce equatorial upwelling and zonal advection of cold water that further intensify the trade winds, and an exchange of water occurs between the tropical and extratropical Pacific in which the poleward surface flow is balanced by equatorward flow of cold water in the thermocline. Simulated tropical temperature depressions are of the same magnitude as those that have been proposed from recent proxy data. 25 refs., 4 figs.

  18. Constraints on implementing environmental impact assessments in Africa

    SciTech Connect (OSTI)

    Kakonge, J.O. (UNDP, Maseru (South Africa)); Imevbore, A.M. (Univ. of Ile-ife (Nigeria))

    1993-09-01T23:59:59.000Z

    Africa can benefit from the experience of other areas in implementing environmental impact assessments (EIAs), but African countries face a greater challenge in achieving this goal due to such problems as inadequate environmental legislation; inappropriate institutional framework for coordination and monitoring government activities; a shortage of qualified manpower, inadequate financial resources; absence of public awareness of the need for EIAs; and lack of suitable screening procedures to determine which development projects require an EIA. Despite these difficulties, African countries can realize short- and long-term benefits from the incorporation of the EIA into their decision-making process.

  19. U.S.-Africa Energy Ministerial | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sureReportsofDepartmentSeries | Department ofDepartment of EnergyAfrica

  20. Johannesburg, South Africa: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias SolarJaneJefferson,Information PV CorpJms solarAfrica:

  1. Making Africa's Power Sector Sustainable: An Analysis of Power Sector

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLu an Group Jump to:Macquarie EnergyMahindraReforms in Africa |

  2. USAID West Africa Climate Program | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTown of Ladoga, IndianaTurtle Airships JumpTypefor AfricaToolkit for

  3. Africa Climate Policy Centre (ACPC) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCaliforniaWeifangwiki HomeASNAddGlobeJump to: navigation,Africa

  4. Africa's Infrastructure: A Time for Transformation | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCaliforniaWeifangwiki HomeASNAddGlobeJump to:Information Africa's

  5. New species of Mycosphaerella occurring on Eucalyptus leaves in Indonesia and Africa

    E-Print Network [OSTI]

    781 New species of Mycosphaerella occurring on Eucalyptus leaves in Indonesia and Africa P.W. Crous and M.J. Wingfield Ahstract:Although Africa and Indonesia have not been particularly well surveyed Eucalyptus leaves from Indonesia. The former species is of particular interest, because its anamorph

  6. Modeling blue and green water availability in Africa Jurgen Schuol,1,2

    E-Print Network [OSTI]

    Modeling blue and green water availability in Africa Ju¨rgen Schuol,1,2 Karim C. Abbaspour,1 Hong a semidistributed hydrological model SWAT (Soil and Water Assessment Tool), the freshwater components blue water. J. B. Zehnder (2008), Modeling blue and green water availability in Africa, Water Resour. Res., 44

  7. The Rise of China in Sub-Saharan Africa: its Ambiguous Economic Alice N. Sindzingre

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    that are associated with such dependence, especially in oil- exporting countries. Chinese investment, however- Saharan Africa to China and investment by Chinese firms in Sub-Saharan Africa. Unlike the `traditional trade, aid and investment, which may create `lock-in' effects. China's trade and investment focus

  8. NORWAY-SOUTH AFRICA RESEARCH PROJECT TPCP/CTHB STUDENTS VISIT NORWAY

    E-Print Network [OSTI]

    NORWAY-SOUTH AFRICA RESEARCH PROJECT TPCP/CTHB STUDENTS VISIT NORWAY Recently two masters' students of visiting Norway to work with the Norwegian Forestry Research Institute (Skogforsk) in Ã?s. This opportunity arose from a bilateral agreement between the Governments of Norway and South Africa. For Gilbert

  9. DETERMINATION, CONTROL AND IMPROVEMENT OF AN SKA RADIO ENVIRONMENT IN SOUTH AFRICA

    E-Print Network [OSTI]

    Ellingson, Steven W.

    DETERMINATION, CONTROL AND IMPROVEMENT OF AN SKA RADIO ENVIRONMENT IN SOUTH AFRICA By Neël Smuts1 ABSTRACT South Africa, in its bid to host the SKA2 , has adopted a dual approach to determine, assess Recommendations and Resolutions and South African legal provisions. An overview of this process is provided. Even

  10. Renewable Energy Industry in South Africa: Opportunities for Partnership and Collaboration

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Renewable Energy Industry in South Africa: Opportunities for Partnership and Collaboration Renewable Energy in South Africa September 23, 2013 11:30 a.m. ­ 12:30 p.m, Engineering East 303C@fau.edu FAU's Division of Research and Southeast National Marine Renewable Energy Center invite you

  11. First Announcement Integrated Soil Fertility Management in Africa: From Microbes to Markets

    E-Print Network [OSTI]

    resources in the management of soil fertility and land quality and the commercialization and adoption of newFirst Announcement Integrated Soil Fertility Management in Africa: From Microbes to Markets (ISFM management strategies benefiting small-scale agriculture in Africa. This conference assembles the strengths

  12. Power and Poverty: The Dilemma of NGO-Supported Development in Africa from a Danish Perspective

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Power and Poverty: The Dilemma of NGO-Supported Development in Africa from a Danish Perspective of people in Sub-Saharan Africa still lives and dies in poverty. With a public image determined by disasters of the many factors, powers and interests from micro- to mega-level that maintain the poverty and oppression

  13. OPEN DISTANCE INTER-UNIVERSITY SYNERGIES BETWEEN EUROPE, AFRICA AND THE MIDDLE EAST

    E-Print Network [OSTI]

    Boyer, Edmond

    621 OPEN DISTANCE INTER-UNIVERSITY SYNERGIES BETWEEN EUROPE, AFRICA AND THE MIDDLE EAST (ODISEAME and Middle East) is a project related to the fifth sector of application of the EUMEDIS initiative (Euro AND GOALS OF THE PROJECT ODISEAME (Open Distance Inter-university Synergies between Europe, Africa

  14. OPEN DISTANCE INTER-UNIVERSITY SYNERGIES BETWEEN EUROPE, AFRICA AND THE MIDDLE EAST

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    621 OPEN DISTANCE INTER-UNIVERSITY SYNERGIES BETWEEN EUROPE, AFRICA AND THE MIDDLE EAST (ODISEAME-university Synergies between Europe, Africa and Middle East) is a project related to the fifth sector of application and the Middle East (ODISEAME). Sixth International Conference on Computer Based Learning in Science, CBLIS 2003

  15. Energy System Development inAfrica: The case of grid and off-grid power inKenya

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Energy System Development inAfrica: The case of grid and off-grid power inKenya By Katherine Deaton Development inAfrica: The case of grid and off-grid power inKenya Energy System Development inAfrica: The case of grid and off-grid power in Kenya by Katherine Steel Submitted to the Engineering Systems Division

  16. Recent Strikes in South Africa's Platinum-Group Metal Mines--Effects Upon World Platinum-Group Metal

    E-Print Network [OSTI]

    Torgersen, Christian

    Recent Strikes in South Africa's Platinum-Group Metal Mines--Effects Upon World Platinum.J., 2012, Recent strikes in South Africa's platinum-group metal mines--Effects upon world platinum........................................................................................................................................................... 5 Figures 1. Maps showing the (A) distribution and (B) geology of South Africa's platinum

  17. Fusarium ananatum sp. nov. in the Gibberella fujikuroi species complex from pineapples with fruit rot in South Africa

    E-Print Network [OSTI]

    rot in South Africa Adriaana JACOBSa, *, Pieter Schalk VAN WYKb , Walter F. O. MARASASc , Brenda D, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South Africa b Soygro, PO Box 457, Hartswater, South Africa c Forestry and Agricultural Biotechnology Institute (FABI

  18. WORLDVIEW THEORY AND THE CONCEPTUALISATION OF SPACE Marc Schfer, Rhodes University, Grahamstown, South Africa, M.Schafer@ru.ac.za

    E-Print Network [OSTI]

    Spagnolo, Filippo

    , Grahamstown, South Africa, M.Schafer@ru.ac.za Introduction The aim of this paper and presentation is to shareMathematicsin South Africa for example, sees space and shape within a context of social experiences. One and representexperienceswithshape,space,timeand motion, using all available senses" (Republic of South Africa, 1997). This apparent

  19. Earthquake Rupture at Focal Depth, Part I: Structure and Rupture of the Pretorius Fault, TauTona Mine, South Africa

    E-Print Network [OSTI]

    Ze'ev, Reches

    Tona Mine, South Africa V. HEESAKKERS,1,2 S. MURPHY,1,3 and Z. RECHES 1 Abstract--We analyze the structure of the Archaean Pretorius fault in TauTona mine, South Africa, as well as the rupture-zone that recently, South Africa 2011, this volume). Key words: Brittle faulting, fault reactivation, earthquake mechanics

  20. India and South Africa: comparisons, confluences, contrasts October 5th-6th 2012 Anatomy Museum, King's College London

    E-Print Network [OSTI]

    Applebaum, David

    India and South Africa: comparisons, confluences, contrasts October 5th-6th 2012 Anatomy Museum/Coffee (Green Room) 11.30-1.00 `English in India and South Africa: comparisons, commonalities, contrasts.30-11.00 `Race and Caste in South Africa: allegories, alibis and analogues': Isabel Hofmeyr (University

  1. Towards evaluating the map literacy of planners in 2D maps and 3D models in South Africa

    E-Print Network [OSTI]

    �öltekin, Arzu

    1 Towards evaluating the map literacy of planners in 2D maps and 3D models in South Africa, Department of Geography, Geoinformatics and Metereology, University of Pretoria, Pretoria, South Africa 2 GIScience Center, University of Zurich, Zurich, Switzerland. Abstract South Africa is faced

  2. A jet streak circulation associated with a low-latitude jet in the Southern Hemisphere over Africa.

    E-Print Network [OSTI]

    Nicholson, Sharon E.

    A jet streak circulation associated with a low-latitude jet in the Southern Hemisphere over Africa 2007 #12;2 Abstract In the Southern Hemisphere over Africa a mid-tropospheric easterly jet stream exists during some months that is analogous to the African Easterly Jet over West Africa. In this note

  3. Feedbacks in a simple prognostic tropical climate model

    SciTech Connect (OSTI)

    Sherwood, S.C. (Scripps Institution of Oceanography, La Jolla, CA (United States))

    1999-07-01T23:59:59.000Z

    A simple four-cell model of the tropical atmosphere in equilibrium with its boundaries is introduced, which can support a variable diabatic circulation and prognostic temperature and humidity profiles. The model is used to predict atmospheric perturbations away from the observed base state. Prognostic variables include radiation, surface fluxes, and dynamic transports, with temperature and water vapor levels determined by conservation constraints. The model includes a specially developed water vapor scheme that performs favorably compared with observations. The model is used to simulate the local and nonlocal sensitivity of the tropical maritime atmosphere to changes in surface temperature and other boundary conditions at very large horizontal scales. The main findings are as follows: (i) The sensitivity of boundary layer convergence to sea surface temperature (SST) variations depends on the behavior of convective heating over cooler regions and may be overestimated by heuristic models that ignore or oversimplify thermodynamic and radiative constraints; (ii) The maintenance of humidity equilibrium over weakly convective areas is modulated by local radiative feedback; (iii) Evaporation feedbacks on SST may be overestimated by heuristic arguments that do not carefully treat atmospheric water transport. An explanation for the constant-relative humidity behavior of general circulation models under climate changes is also offered based on the results.

  4. Autecology of Vibrio vulnificus and Vibrio parahaemolyticus in tropical waters

    SciTech Connect (OSTI)

    Rivera, S.; Lugo, T.; Hazen, T.C. [Univ. of Puerto Rico, Rio Piedras (Puerto Rico)

    1988-12-31T23:59:59.000Z

    Water and shellfish samples collected from estuaries, mangroves, and beaches along the coast of Puerto Rico were examined for Vibrio vulnificus and Vibrio parahaemolyticus. An array of water quality parameters were also measured simultaneous with bacteria sampling. Both species of vibrio were associated with estuary and mangrove locations, and neither was isolated from sandy beaches. Densities of V. vulnificus were negatively correlated with salinity, 10--15 ppt being optimal. V. parahaemolyticus was isolated from sites with salinities between 20 and 35 ppt, the highest densities occurring at 20 ppt. Densities of Vibrio spp. and V. parahaemolyticus for a tropical estuary surpassed those reported for temperate estuaries by several orders of magnitude. Both densities of total Vibrio spp. and V. parahaemolyticus in the water were directly related to densities of fecal coliforms, unlike V. vulnificus. The incidence of ONPG(+) strains among sucrose({minus}) Vibrio spp. served as an indicator of the frequency of V. vulnificus in this group. More than 63% of the V. vulnificus isolated were pathogenic. V. vulnificus and V. parahaemolyticus occupy clearly separate niches within the tropical estuarine-marine ecosystem.

  5. Am. J. Trop. Med. Hyg., 58(6), 1998, pp. 748758 Copyright 1998 by The American Society of Tropical Medicine and Hygiene

    E-Print Network [OSTI]

    Cohen, Joel E.

    of Tropical Medicine and Hygiene INFLUENCE OF HUMANS AND DOMESTIC ANIMALS ON THE HOUSEHOLD PREVALENCE

  6. Am. J. Trop. Med. Hyg., 59(5), 1998, pp. 741749 Copyright 1998 by The American Society of Tropical Medicine and Hygiene

    E-Print Network [OSTI]

    Cohen, Joel E.

    of Tropical Medicine and Hygiene HOUSEHOLD PREVALENCE OF SEROPOSITIVITY FOR TRYPANOSOMA CRUZI IN THREE RURAL

  7. On the connection between continental-scale land surface processes and the tropical climate in a coupled ocean-atmosphere-land system

    E-Print Network [OSTI]

    Ma, H-Y; Mechoso, CR; Xue, Y; Xiao, H; Neelin, JD; Ji, X

    2013-01-01T23:59:59.000Z

    the remote response to the convective heating in Africa, weand remote regions. The convective heating anomalies

  8. Objective analysis of tropical cyclone intensity, strength, and size using routine aircraft reconnaissance data

    E-Print Network [OSTI]

    Stanfield, Charles Baynard

    1986-01-01T23:59:59.000Z

    for the purpose of quant1fying tropical cyclone inten- sity, strength, and size 1s exam1ned. A computer program is developed which may be used 1n near real t1me or after the fact to evaluate local1zed pressure/wind relationships in the tropical cyclone env1ron... representative set of data is obtained over a 13 month per1od for the entire spectrum of storms from tropical de- pression to super typhoon. These data are used to try to establish empirical pressure/wind relationsh1ps and a means of determining effec- tive...

  9. Assessing the performance of SIA in the EIA context: A case study of South Africa

    SciTech Connect (OSTI)

    Pisani, Jacobus A. du [School of Social and Government Studies, North-West University, Potchefstroom, P.O. Box 19772, 2522 Noordbrug (South Africa)]. E-mail: gskjadp@puk.ac.za; Sandham, Luke A. [School of Environmental Sciences and Development, North-West University, Potchefstroom (South Africa)

    2006-11-15T23:59:59.000Z

    This article, a theoretical perspective based on a literature study, is a critical evaluation of SIA as part of the EIA process in South Africa against the background of international guidelines and best practices. It includes sections on the historical background of the development of SIA in South Africa, the legal status and requirements of SIA in the country, and a critical evaluation of SIA regulation in South Africa. The conclusion reached in the article is that the persistent problems of SIA practice, experienced in other parts of the world, are also evident in South Africa. Apart from institutional, financial and professional constraints, there are also serious problems associated with approach and methods. This conclusion confirms the findings of empirical studies that SIA in South Africa is neglected, that the practice of SIA in South Africa is not yet on a sound footing, and that it does not receive the professional attention it deserves in a country beset by enormous social challenges. To conclude the article recommendations are made to improve the level of SIA practice in South Africa, and the possible significance of this national case study for international practice is indicated.

  10. Partitioned Waveform Inversion Applied to Eurasia and Northern Africa

    SciTech Connect (OSTI)

    bedle, H; Matzel, E; Flanagan, M

    2006-07-27T23:59:59.000Z

    This report summarizes the data analysis achieved during Heather Bedle's eleven-week Technical Scholar internship at Lawrence Livermore National Labs during the early summer 2006. The work completed during this internship resulted in constraints on the crustal and upper mantle S-velocity structure in Northern Africa, the Mediterranean, the Middle East, and Europe, through the fitting of regional waveform data. This data extends current raypath coverage and will be included in a joint inversion along with data from surface wave group velocity measurements, S and P teleseismic arrival time data, and receiver function data to create an improved velocity model of the upper mantle in this region. The tectonic structure of the North African/Mediterranean/Europe/Middle Eastern study region is extremely heterogeneous. This region consists of, among others, stable cratons and platforms such as the West Africa Craton, and Baltica in Northern Europe; oceanic subduction zones throughout the Mediterranean Sea where the African and Eurasian plate collide; regions of continental collision as the Arabian Plate moves northward into the Turkish Plate; and rifting in the Red Sea, separating the Arabian and Nubian shields. With such diverse tectonic structures, many of the waveforms were difficult to fit. This is not unexpected as the waveforms are fit using an averaged structure. In many cases the raypaths encounter several tectonic features, complicating the waveform, and making it hard for the software to converge on a 1D average structure. Overall, the quality of the waveform data was average, with roughly 30% of the waveforms being discarded due to excessive noise that interfered with the frequency ranges of interest. An inversion for the 3D S-velocity structure of this region was also performed following the methodology of Partitioned Waveform Inversion (Nolet, 1990; Van der Lee and Nolet, 1997). The addition of the newly fit waveforms drastically extends the range of the model. The model now extends as far east in Africa to cover Chad and Niger, and reaches south to cover Zambia. The model is also stretched eastward to cover the eastern half of India, and northward to cover the southern portion of Scandinavia.

  11. Ambient aromatic hydrocarbon measurements at Welgegund, South Africa

    SciTech Connect (OSTI)

    Jaars, K.; Beukes, J. P.; van Zyl, P. G.; Venter, A. D.; Josipovic, M.; Pienaar, J. J.; Vakkari, Ville; Aaltonen, H.; Laakso, H.; Kulmala, M.; Tiitta, P.; Guenther, Alex B.; Hellen, H.; Laakso, L.; Hakola, H.

    2014-07-11T23:59:59.000Z

    Aromatic hydrocarbons are associated with direct adverse human health effects and can have negative impacts on ecosystems due to their toxicity, as well as indirect negative effects through the formation of tropospheric ozone and secondary organic aerosol that affect human health, crop production and regional climate. Measurements were conducted at the Welgegund measurement station (South Africa) that is considered to be a regionally representative background site. However, the site is occasionally impacted by plumes from major anthropogenic source regions in the interior of South Africa, which include the western Bushveld Igneous Complex (e.g. platinum, base metal and ferrochrome smelters), the eastern Bushveld Igneous Complex (platinum and ferrochrome smelters), the Johannesburg-Pretoria metropolitan conurbation (>10 million people), the Vaal Triangle (e.g. petrochemical and industries), the Mpumalanga Highveld (e.g. coal-fired power plants and petrochemical industry) and also a region of anti-cyclonic recirculation of air mass over the interior of South Africa. The aromatic hydrocarbon measurements were conducted with an automated sampler on Tenax-TA and Carbopack-B adsorbent tubes with heated inlet for one year. Samples were collected twice a week for two hours during daytime and two hours 1 during night-time. A thermal desorption unit, connected to a gas chromatograph and a mass 2 selective detector was used for sample preparation and analysis. Results indicated that the 3 monthly median total aromatic hydrocarbon concentrations ranged between 0.01 to 3.1 ppb. 4 Benzene levels did not exceed local air quality standards. Toluene was the most abundant 5 species, with an annual median concentration of 0.63 ppb. No statistically significant 6 differences in the concentrations measured during daytime and night-time were found and no distinct seasonal patterns were observed. Air mass back trajectory analysis proved that the lack of seasonal cycles could be attributed to patterns determining the origin of the air masses sampled. Aromatic hydrocarbon concentrations were in general significantly higher in air masses that passed over anthropocentrically impacted regions. Interspecies correlations and ratios gave some indications of the possible sources for the different aromatic hydrocarbons in the source regions defined in the paper. The highest contribution of aromatic hydrocarbon concentrations to ozone formation potential was also observed in plumes passing over anthropocentrically impacted regions.

  12. Environmental impact assessment practices in the sub-Saharan Africa: cases from Kenya

    SciTech Connect (OSTI)

    Ngunjiri, P.G.

    1987-01-01T23:59:59.000Z

    The aim for this research is to review environmental impact assessment (EIA) practices in sub-Saharan Africa, drawing upon appropriate theoretical and methodological work on EIA. This study uses a comparative evaluation method to examine the extent of environmental impact assessment (EIA) in project analysis. It uses site and services low cost housing projects from Kenya. The research has three major components: (1) review of environmental practice in Sub-Saharan Africa through literature review and case studies; (2) review of general literature on EIA as practiced by international agencies and developed countries; and (3) formulation of more suitable guidelines for EIA procedures in Sub-Saharan Africa.

  13. Oil and gas developments in North Africa in 1985

    SciTech Connect (OSTI)

    Michel, R.C.

    1986-10-01T23:59:59.000Z

    Petroleum rights in the 6 North African countries (Algeria, Egypt, Libya, Morocco, Sudan, and Tunisia) covered in this paper were 1,839,817 km/sup 2/ at the end of 1985, a decrease of 3% from the 1,896,446 km/sup 2/ held at the end of 1984. This decrease mainly is due to significant relinquishments made in Algeria, Egypt, and Tunisia. Morocco, however, had an increase of 18,087 km/sup 2/. Oil discoveries were reported in Algeria (possibly 5), Libya (at least 2), and Egypt (16). Only 1 gas find was made (in Morocco). According to sparse information, development drilling may have decreased markedly during 1985. Oil and condensate production increased by 3.1% to approximately 3,054,000 b/d compared to about 2,963,400 b/d in 1984. No statistics are currently available on gas production in North Africa. 8 figures, 27 tables.

  14. Latest Jurassic-early Cretaceous regressive facies, northeast Africa craton

    SciTech Connect (OSTI)

    van Houten, F.B.

    1980-06-01T23:59:59.000Z

    Nonmarine to paralic detrital deposits accumulated in six large basins between Algeria and the Arabo-Nubian shield during major regression in latest Jurassic and Early Cretaceous time. The Ghadames Sirte (north-central Libya), and Northern (Egypt) basins lay along the cratonic margin of northeastern Africa. The Murzuk, Kufra, and Southern (Egypt) basins lay in the south within the craton. Data for reconstructing distribution, facies, and thickness of relevant sequences are adequate for the three northern basins only. High detrital influx near the end of Jurassic time and in mid-Cretaceous time produced regressive nubian facies composed largely of low-sinuosity stream and fahdelta deposits. In the west and southwest the Ghadames, Murzuk, and Kufra basins were filled with a few hundred meters of detritus after long-continued earlier Mesozoic aggradation. In northern Egypt the regressive sequence succeeded earlier Mesozoic marine sedimentation; in the Sirte and Southern basins correlative deposits accumulated on Precambrian and Variscan terranes after earlier Mesozoic uplift and erosion. Waning of detrital influx into southern Tunisia and adjacent Libya in the west and into Israel in the east initiated an Albian to early Cenomanian transgression of Tethys. By late Cenomanian time it had flooded the entire cratonic margin, and spread southward into the Murzuk and Southern basins, as well as onto the Arabo-Nubian shield. Latest Jurassic-earliest Cretaceous, mid-Cretaceous, and Late Cretaceous transgressions across northeastern Africa recorded in these sequences may reflect worldwide eustatic sea-level rises. In contrast, renewed large supply of detritus during each regression and a comparable subsidence history of intracratonic and marginal basins imply regional tectonic control. 6 figures.

  15. The effect of subsurface temperature variability on the predictability of SST in the tropical Atlantic Ocean

    E-Print Network [OSTI]

    Bates, Susan Carr

    1999-01-01T23:59:59.000Z

    were used in experiment 3. All variations reveal the same results; SST predictions are improved with the addition of subsurface variability in the equatorial region at longer lead times, while the north tropical and western regions show little...

  16. The Impact of Tropical Cyclones on the Geomorphic Evolution of Bolivar Peninsula, TX

    E-Print Network [OSTI]

    Hales, Billy

    2012-07-16T23:59:59.000Z

    Semivariogram Analysis ......................................................... 82 Fractal Scaling Range Analysis ............................................... 91 Shifting Window Analysis ...................................................... 96....25 Fractal analysis for Hurricane Ike ................................................. 92 Figure 3.26 Fractal analysis for Hurricane Rita. ............................................... 93 Figure 3.27 Fractal analysis for Tropical Storm Fay...

  17. Tropical Pacific Influence on the Source and Transport of Marine Aerosols to West Antarctica

    E-Print Network [OSTI]

    Criscitiello, Alison S.

    The climate of West Antarctica is strongly influenced by remote forcing from the tropical Pacific. For example, recent surface warming over West Antarctica reflects atmospheric circulation changes over the Amundsen Sea, ...

  18. Global Ensemble Predictions of 2009's Tropical Cyclones Initialized with an Ensemble Kalman Filter

    E-Print Network [OSTI]

    Hamill, Tom

    Global Ensemble Predictions of 2009's Tropical Cyclones Initialized with an Ensemble Kalman Filter with the first 20 members of a 60-member ensemble Kalman filter (EnKF) using the T382L64 GFS. The GFS

  19. Global Ensemble Predictions of 2009's Tropical Cyclones Initialized with an Ensemble Kalman Filter

    E-Print Network [OSTI]

    Hamill, Tom

    1 Global Ensemble Predictions of 2009's Tropical Cyclones Initialized with an Ensemble Kalman models were initialized with the first 20 members of a 60member ensemble Kalman filter (EnKF) using

  20. Extreme rainfall intensities and long-term rainfall risk from tropical cyclones

    E-Print Network [OSTI]

    Langousis, Andreas, 1981-

    2009-01-01T23:59:59.000Z

    We develop a methodology for the frequency of extreme rainfall intensities caused by tropical cyclones (TCs) in coastal areas. The mean rainfall field associated with a TC with maximum tangential wind speed Vmax, radius ...

  1. SCOPE 51 -Biogeochemistry of Small Catchments 15 Small Catchment Studies in the Tropical Zone

    E-Print Network [OSTI]

    Vegas Vlarrúbia, Teresa

    . The rapidly increasing exploitation of the hydrological and mineral resources and accelerated urbanization OF THE STRUCTURE AND FUNCTIONING OF A TROPICAL DECIDUOUS FOREST IN WEST MEXICO 15.3.2 EFFECTS OF CLIMATE AND FIRE

  2. Leaf traits and foliar CO2 exchange in a Peruvian tropical montane cloud forest 

    E-Print Network [OSTI]

    Van de Weg, Marjan

    2011-06-28T23:59:59.000Z

    Tropical montane cloud forests (TMCF) are one of the most fascinating, but least understood ecosystems in the world, and the interest in the carbon (C) cycle of TMCFs with regard to carbon sequestration and storage ...

  3. Tropical tree a-diversity: Results from a worldwide network of large plots

    E-Print Network [OSTI]

    Bermingham, Eldredge

    , SOMBOON KIRATIPRAYOON, PAMELA, TERESE HART, AKIRA ITOH, JAMES V. LAFRANKIE, INNOCENT LIENGOLA, DANIEL Tropical Research Institute, Unit 0948, APO AA 34002-0948 USA. E-mail: condit@ctfs.si.edu (Corresponding

  4. Alkyl nitrate (C 1 -C 3 ) depth profiles in the tropical Pacific Ocean

    E-Print Network [OSTI]

    Dahl, E. E; Yvon-Lewis, S. A; Saltzman, E. S

    2007-01-01T23:59:59.000Z

    Experiment (WOCE), vol. 2, Pacific Ocean DRAFT, edited by M.over the equatorial Pacific Ocean during SAGA 3, J. Geophys.the troposphere over the Pacific Ocean during PEM- Tropics A

  5. Analysis of the Tropical Tropopause Layer Cirrus in CALIPSO and MLS Data - A Water Perspective

    E-Print Network [OSTI]

    Wang, Tao

    2012-07-16T23:59:59.000Z

    Two mechanisms appear to be primarily responsible for the formation of cirrus clouds in Tropical Tropopause Layer (TTL): detrainment from deep convective anvils and in situ initiation. Here we propose to identify TTL cirrus clouds by analyzing...

  6. Free and forced tropical variability: role of the wind-evaporation-sea surface temperature (WES) feedback

    E-Print Network [OSTI]

    Mahajan, Salil

    2009-05-15T23:59:59.000Z

    The Wind-Evaporation-Sea Surface Temperature (WES) feedback is believedto play an important role in the tropics, where climate variability is governed byatmosphere-ocean coupled interactions. This dissertation reports on studies to distinctlyisolate...

  7. Tropical North Atlantic Hydrologic Cycle Variability in the Florida Straits During the Last Ice Age

    E-Print Network [OSTI]

    Them, Theodore

    2012-10-19T23:59:59.000Z

    on the transition out of cold stadial events, suggesting the trigger for these abrupt climate events may reside in the tropics rather than in the high-latitude North Atlantic as previously thought....

  8. Tropical Pacific response to 20th century Atlantic warming F. Kucharski,1

    E-Print Network [OSTI]

    Kang, In-Sik

    and L. Feudale1 Received 16 November 2010; accepted 13 December 2010; published 1 February 2011. [1. Feudale (2011), Tropical Pacific response to 20th century Atlantic warming, Geophys. Res. Lett., 38, L

  9. Tropical cyclones within the sedimentary record : analyzing overwash deposition from event to millennial timescales

    E-Print Network [OSTI]

    Woodruff, Jonathan Dalrymple

    2009-01-01T23:59:59.000Z

    Tropical cyclone activity over the last 5000 years is investigated using overwash sediments from coastal lagoons on the islands of Vieques, Puerto Rico and Koshikijima, Japan. A simple sediment transport model can reproduce ...

  10. Does It Make Sense To Modify Tropical Cyclones? A Decision-Analytic Assessment

    E-Print Network [OSTI]

    Klima, Kelly

    Recent dramatic increases in damages caused by tropical cyclones (TCs) and improved understanding of TC physics have led DHS to fund research on intentional hurricane modification. We present a decision analytic assessment ...

  11. On the role of wind driven ocean dynamics in tropical Atlantic variability

    E-Print Network [OSTI]

    Da Silva, Meyre Pereira

    2006-08-16T23:59:59.000Z

    The response of the tropical Atlantic Ocean to wind stress forcing on seasonal and interannual time scales is examined using an ocean data assimilation product from the Geophysical Fluid Dynamics Laboratory (GFDL), and an ocean general circulation...

  12. A Mechanistic Study of Atlantic Meridional Overturning Circulation Changes on Tropical Atlantic Climate

    E-Print Network [OSTI]

    Wen, Caihong

    2010-10-12T23:59:59.000Z

    . Using this new 2-1/2-layer RGO model as a dynamical tool, a systematic investigation of the role of oceanic processes in controlling tropical Atlantic sea-surface temperature (SST) response to Atlantic Meridional Overturning Circulation (AMOC) changes...

  13. Effect of Atlantic Meridional Overturning Circulation Changes on Tropical Coupled Ocean-Atmosphere System

    E-Print Network [OSTI]

    Wan, Xiuquan

    2010-01-14T23:59:59.000Z

    The objective of this study is to investigate the effect of Atlantic meridional overturning circulation (AMOC) changes on tropical coupled ocean-atmosphere system via oceanic and atmospheric processes. A suite of numerical simulations have been...

  14. The role of gap phase processes in the biomass dynamics of tropical forests

    E-Print Network [OSTI]

    Chave, Jérôme

    , Smithsonian Tropical Research Institute, APO AA 34002 Panama, Republic of Panama 3 Thai Royal Forest Colorado Island (BCI), Panama; Pasoh and Lambir, Malaysia; and Huai Kha Khaeng (HKK), Thailand). We show in incoming solar radiation, in

  15. Passive microwave observations of mesoscale convective systems over the tropical Pacific Ocean

    E-Print Network [OSTI]

    McGaughey, Gary Rae

    1994-01-01T23:59:59.000Z

    This paper presents high resolution passive microwave measurements obtained in the western Pacific warm pool region. These measurements represent the first comprehensive observations of convection over the tropical oceans, and were obtained from...

  16. Reduced impact logging minimally alters tropical rainforest carbon and energy exchange

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    Brazil | Amazon | land use | micrometeorology D eforestation in the tropics affects the land–atmosphere ex- change of trace gases and energyand energy (W·m ?2 ) ?uxes, calculated as (? = logged ? unlogged), in Tapajos National Forest, Para, Brazil.

  17. A coupled model study of the remote influence of enso on tropical Atlantic sst variability 

    E-Print Network [OSTI]

    Fang, Yue

    2006-08-16T23:59:59.000Z

    To investigate the tropical Atlantic response to the remote El Nino-Southern Oscillation (ENSO) forcing, a Reduced Physics Â? Coupled Global Circulation Model (RP-CGCM) is developed, and four experiments are carried out. ...

  18. Influence of Tropical Tropopause Layer Cooling on Atlantic Hurricane Activity KERRY EMANUEL AND SUSAN SOLOMON

    E-Print Network [OSTI]

    Rothman, Daniel

    , Switzerland SEAN DAVIS NOAA/Earth System Research Laboratory, Chemical Sciences Division, and CooperativeInfluence of Tropical Tropopause Layer Cooling on Atlantic Hurricane Activity KERRY EMANUEL Institute for Research in Environmental Sciences, University of Colorado at Boulder, Boulder, Colorado

  19. The biogeochemistry of tropical lakes: A case study from Lake Matano, Indonesia

    E-Print Network [OSTI]

    Crowe, S.A.; O'Neill, A.H.; Katsev, S.; Hehanussa, P.; Haffner, G. Douglas; Sundby, Bjorn; Mucci, Alfonso; Fowle, David A.

    2008-01-16T23:59:59.000Z

    We examined the chemical composition of the water column of Lake Matano, Sulawesi Island, Indonesia, to document how the high abundances of Fe (hydr)oxides in tropical soils and minimal seasonal temperature variability affect biogeochemical cycling...

  20. Diatom-based Late Quaternary precipitation record for lowland tropical South America 

    E-Print Network [OSTI]

    Fitzpatrick, Katharine Anne

    2012-06-25T23:59:59.000Z

    The late Quaternary palaeoclimatic history of the lowland Southern Hemisphere Tropics of South America (SHTSA) has been little studied and analysis of key climatic events, such as the Last Glacial Maximum (centred ~ ...

  1. Environmental Health and Safety Laboratory Preparation for Tropical Storms or Hurricanes

    E-Print Network [OSTI]

    Natelson, Douglas

    Environmental Health and Safety Laboratory Preparation for Tropical Storms or Hurricanes damage, significant rainfall and possible campus flooding. Below are some guidelines that should exits and corridors are clear. Someone from the Environmental Health and Safety Department

  2. Tracing tropical Andean glaciers over space and time: Some lessons and transdisciplinary implications

    E-Print Network [OSTI]

    Howat, Ian M.

    Andes of Perú and Bolivia have been used to test hypotheses about how these glaciers respond to climatic radiation balance and constant thermal regime in the tropics initiate a transfer of energy to higher

  3. Carbon cycling, fire and phenology in a tropical savanna woodland in Nhambita, Mozambique 

    E-Print Network [OSTI]

    Ryan, Casey Merlin

    2009-01-01T23:59:59.000Z

    In the savanna woodlands of Southern Africa, locally know as miombo, carbon cycling is poorly quantified and many of the key processes remain obscure. For example, seasonal constraints on productivity and leaf display ...

  4. An Exploratory Study of U.S. Home Builder and Architect Use of Tropical Hardwoods

    E-Print Network [OSTI]

    developing countries. Southeast Asia, Latin America, and Central Western Africa are the three main regions Forest Products Development Center School of Renewable Natural Resources Louisiana State University Louisiana Forest Products Development Center School of Renewable Natural Resources Louisiana State

  5. Photo: Bruno Marty / IRD Observed and expected changes to the tropical

    E-Print Network [OSTI]

    Qiu, Bo

    are also occurring, due to the build-up of anthropogenic greenhouse gas emissions in the atmosphere simulations 104 3.2 Features of the tropical Pacific Ocean 105 3.2.1 Large-scale currents 105 3.2.2 Ocean.3 Observed and projected changes in the tropical Pacific Ocean 141 3.3.1 Large-scale currents 141 3.3.2 Ocean

  6. Towards Energy Efficient Building Assets: A Review on Sub-Tropical Climate

    E-Print Network [OSTI]

    Chowdhury, A. A.; Rasul, M. G.; Khan, M. M. K.

    2006-01-01T23:59:59.000Z

    Fifteenth Symposium on Improving Building Systems in Hot and Humid Climate July 24-26, 2006 The Buena Vista Palace Hotel, Orlando, Florida TOWARDS ENERGY EFFICIENT BUILDING ASSETS: A REVIEW ON SUB-TROPICAL CLIMATE A.A. CHOWDHURY M.G. RASUL M... building’s stability. To approach the concept of energy efficient building assets in a sub-tropical climate, building assets must adopt a number of innovative strategies to take advantage of subtropical climate. The importance of energy efficiency...

  7. The rainfall patterns associated with tropical storm Felice of September 1970

    E-Print Network [OSTI]

    Norton, Lewis Calvin

    1976-01-01T23:59:59.000Z

    THE RAINFALL PATTERNS ASSOCIATED WITH TROPICAL STORM FELICE OF SEPTEMBER 1970 A Thesis by LEWIS CALVIN NORTON Submitted to the Graduate College of Tc. . as ARM Univers ty in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE May 1976 Major Subject: Meteorology THE RAINFALL PATTERNS ASSOCIATED WITH TROPICAL STORM FELICE OF SEPTEMBER 1970 A Thesis by LEWIS CALVIN NORTON Approved as to style and content by: (Chairman of Committee) (Head of Department) (Member...

  8. Airborne LiDAR Detects Selectively Logged Tropical Forest Even in an Advanced Stage of Recovery

    E-Print Network [OSTI]

    Kent, Rafi; Lindsell, Jeremy A.; Laurin, Gaia Vaglio; Valentini, Riccardo; Coomes, David A.

    2015-01-01T23:59:59.000Z

    logged tropical forests: the attained and the attainable. Conserv. Lett. 2012, 5, 296–303. 10. Silver, W. L.; Ostertag, R.; Lugo, a. E. The Potential for Carbon Sequestration Through Reforestation of Abandoned Tropical Agricultural and Pasture Lands... forests can be of high conservation value [2,7–9] and act as globally-important carbon sinks [9–12]. However, there is much uncertainty regarding the changing extent of regenerating forests, their rate and stage of recovery, and the influence...

  9. Using satellite remote sensing to quantify woody cover and biomass across Africa 

    E-Print Network [OSTI]

    Mitchard, Edward Thomas Alexander

    2012-06-25T23:59:59.000Z

    The goal of quantifying the woody cover and biomass of tropical savannas, woodlands and forests using satellite data is becoming increasingly important, but limitations in current scientific understanding reduce the ...

  10. EU, CHINA AND THE ENVIRONMENTAL CHALLENGE IN AFRICA A case study from timber industry in Gabon

    E-Print Network [OSTI]

    1 EU, CHINA AND THE ENVIRONMENTAL CHALLENGE IN AFRICA A case study from timber industry: .....................................................................................................................................................2 Part I: The EU, China and the external environmental dimension....................................................................3 1.1 China as a competitor normative power in the environmental sector

  11. Surficial sediments of the continental rise and slope, Niger Delta, West Africa: properties and geology

    E-Print Network [OSTI]

    Kobilka, David William

    1999-01-01T23:59:59.000Z

    The submarine portions of the Niger Delta, West Africa are undergoing active gravity tectonic deformation due to thick deposits of ductile shale overlain by paralic sands. Because the region is rich in hydrocarbon reserves, the subdermal Niger Delta...

  12. Cell-Phones and Spears: Indigenous Cultural Transition Within the Maasai of East Africa

    E-Print Network [OSTI]

    Summitt, April R.

    2002-03-01T23:59:59.000Z

    The Maasai of East Africa are excellent examples of Indigenous culture in transition. In spite of pressure from the outside, Maasai currently maintain their cultural identity to choose which parts of western culture and ...

  13. Geological and thermochronological evolution of the lower crust of southern Africa

    E-Print Network [OSTI]

    Schmitz, Mark D. (Mark David), 1972-

    2002-01-01T23:59:59.000Z

    Geochronological, thermochronological and isotopic studies of kimberlite-borne crustal xenoliths have been used to elucidate the architecture and thermal evolution of the continental lithosphere of southern Africa. U-Pb ...

  14. Power transmission investment analysis: a new financial Evaluation framework for South Africa

    SciTech Connect (OSTI)

    Maboke, Silky Ntombifuthi; Kachienga, Michael Ogembo

    2008-05-15T23:59:59.000Z

    A proposed framework for power transmission expansion projects in South Africa incorporates the modeling of project options and uncertainties, Monte Carlo simulations, real option analysis, and decision analysis, based on a foundation of strategic analysis. (author)

  15. Rural development in practice? The experience of the ‡Khomani bushmen in the Northern Cape, South Africa 

    E-Print Network [OSTI]

    Grant, Julie

    2012-06-29T23:59:59.000Z

    This thesis analyses the dynamics, complexities and numerous obstacles that serve to constrain rural development within the ‡Khomani Community of the Northern Cape Province, South Africa. Following the end of Apartheid, ...

  16. Environmental Entanglements: The Intersectionality of Youth Participation in an Eco-Schools Club in South Africa 

    E-Print Network [OSTI]

    Reddy, Sertanya

    2012-11-29T23:59:59.000Z

    Youth participation in environmental issues tends to be unquestionably accepted simply as something ‘good’. This research takes a step back to critically explore youth participation in an Eco-Schools club in a girls’ high school in South Africa...

  17. Comrades still struggling: class, nationalism and the Tripartite Alliance in post-apartheid South Africa

    E-Print Network [OSTI]

    Beresford, Alexander Roy

    2011-07-04T23:59:59.000Z

    This thesis examines the trajectories of class politics in post-apartheid South Africa. It investigates whether we can witness South African politics entering into a post-nationalist era characterised by the increasing salience of class struggles...

  18. The "Out of Africa" Hypothesis, Human Genetic Diversity, and Comparative Economic Development

    E-Print Network [OSTI]

    Ashraf, Quamrul

    2012-08-12T23:59:59.000Z

    This research advances and empirically establishes the hypothesis that, in the course of the prehistoric exodus of Homo sapiens out of Africa, variation in migratory distance to various settlements across the globe affected ...

  19. Author / Computing, 2000, Vol. 0, Issue 0, 1-2 Digital Storytelling in Africa

    E-Print Network [OSTI]

    Blake, Edwin

    Author / Computing, 2000, Vol. 0, Issue 0, 1-2 1 Digital Storytelling in Africa Gary Marsden1) , llda Ladeira1) , Thomas Reitmaier1) , Nicola J Bidwell2) Edwin Blake 1) 1) Department of Computer

  20. Mediterraneità and modernità : architecture and culture during the period of Italian colonization of North Africa

    E-Print Network [OSTI]

    McLaren, Brian L. (Brian Lloyd), 1958-

    2001-01-01T23:59:59.000Z

    This dissertation examines the intersection of the modern and the colonial in architecture and culture during the period of Italian colonization of North Africa from 1911 to 1943. Rather than see the colonies as merely a ...

  1. ForPeerReview Petrology of the Nakhlite (Martian) Meteorite Northwest Africa 998

    E-Print Network [OSTI]

    Treiman, Allan H.

    ForPeerReview Only Petrology of the Nakhlite (Martian) Meteorite Northwest Africa 998 Journal of Washington, Earth System Sciences Keywords: nakhlite, Martian , NWA 998, petrology Petrology of the Nakhlite (Martian) Meteorite

  2. Solar capabilities : promoting, technological learning in South Africa's photovoltaic supply industry

    E-Print Network [OSTI]

    Wright, Janelle N., 1978-

    2003-01-01T23:59:59.000Z

    I explore the mechanisms through which technological capabilities have been built in the market for photovoltaic (PV) module and balance of system (BOS) manufacture in South Africa. Drawing on the literature on technology ...

  3. The tobacco industry's activities to undermine tobacco control efforts in Egypt and North Africa, Arabic version

    E-Print Network [OSTI]

    World Health Organization

    2006-01-01T23:59:59.000Z

    2025048141. PM 2025048147. Egypt Law 52. 13 November 1981.Type A priorities for Egypt, North Africa and Sub-SaharanPM 2501066214. PM 2025840642. Egypt Area V5-Year Plan, 1981–

  4. Characterization of novel rice germplasm from West Africa and genetic marker associations with rice cooking quality

    E-Print Network [OSTI]

    Traore, Karim

    2006-10-30T23:59:59.000Z

    Genetic resource enhancement is the foundation of any good breeding program. Landraces from West Africa, interspecifics between Oryza sativa and Oryza glaberrima and improved lines from the West African Rice Development Association and other...

  5. A planning paradigm for electrification in Sub-Saharan Africa : a case study of Tanzania

    E-Print Network [OSTI]

    Dimson, Sarah

    2014-01-01T23:59:59.000Z

    In Sub-Saharan Africa, a lack of clean electricity generation sources, poor electricity access and low levels of electricity consumption are profoundly stifling sustainable development. This thesis presents a specialized ...

  6. The onset of 1982/83 summer monsoon over southern Africa

    E-Print Network [OSTI]

    Garanganga, Bradwell J.

    1989-01-01T23:59:59.000Z

    of MASTER OF SCIENCE December 1989 Major Subject: Meteorology THE ONSET OF 1982/83 SUMMER MONSOON OVER SOUTHERN AFRICA: A DIAGNOSTIC STUDY A THESIS by BRADWELL J. GARANGANGA Approved as to style and content by: Steven W. L ns (Chair of Committee...) James P. McGuirk (Member) ubrey L. Anderson (Member) James R. Scoggins (Head of Department) December 1989 ABSTRACT The Onset Oi' 1982/83 Summer Monsoon Over Southern Africa, : A Diagnostic Study. (December 1989) Bradwell J. Gsranganga, B. S...

  7. perspective: The responses of tropical forest species to global climate change: acclimate, adapt, migrate, or go extinct?

    E-Print Network [OSTI]

    Feeley, Kenneth J; Rehm, Evan M; Machovina, Brian

    2012-01-01T23:59:59.000Z

    maps.  Nature Climate Change, 2, 182–185.   Bacles, S.   (1998)  Global  climate  change  and  tropical  forest 2011) Impacts  of  climate  change  on  the  world's  most 

  8. Tropical biomass burning smoke plume size, shape, reflectance, and age based on 2001â??2009 MISR imagery of Borneo

    E-Print Network [OSTI]

    Zender, C. S.; Krolewski, A. G.; Tosca, M. G.; Randerson, J. T.

    2012-01-01T23:59:59.000Z

    C. S. Zender et al. : Tropical biomass burning smoke plumeslaboratory measurements of biomass-burning emis- sions: 1.aerosol optical depth biomass burning events: a comparison

  9. Holocene Paleohydrology of the tropical andes from lake records

    SciTech Connect (OSTI)

    Abbott, M. B., LLNL

    1997-03-03T23:59:59.000Z

    Two century-scale time series in northern Bolivia constrain the ages of abrupt changes in the physical, geochemical, and biological characteristics of sediments obtained from lakes that formed during deglaciation from the late Pleistocene glacial maximum. The watersheds of Laguna Viscachani (16{degrees}12`S, 68{degrees}07`W, 3780m) and Lago Taypi Chaka Kkota (16{degrees}13`S, 68{degrees}21`W, 4300m), located on the eastern and western slopes of the Cordillera Real, respectively, contain small cirque glaciers. A high-resolution chronology of the lake sediments is provided by 23 AMS {sup 14}C dates of discrete macro-fossils. Late Pleistocene glaciers retreated rapidly, exposing the lake basins between 10,700 and 9700 {sup 14}C yr B.P. The sedimentary facies suggest that after 8900 {sup 14}C B.P. glaciers were absent from the watersheds and remained so during the middle Holocene. An increase in the precipitation-evaporation balance is indicated above unconformities dated to about 2300 {sup 14}C yr B.P. in both Lago Taypi Chaka Kkota and Laguna Viscachani. An abrupt increase in sediment accumulation rated after 1400 {sup 14}C yr B.P. signals the onset of Neoglaciation. A possible link exists between the observed millennial-scale shifts in the regional precipitation- evaporation balance and seasonal shifts in tropical insolation.

  10. South African Association of Geomorphologists, Johannesburg, South Africa, 2000 Flood plain formation in semi-arid central Australia.

    E-Print Network [OSTI]

    Bourke, Mary C.

    South African Association of Geomorphologists, Johannesburg, South Africa, 2000 Flood plain of sediment waves and the close succession of a series of high-energy overbank flows contribute

  11. Writing Through the Visual/Virtual: Inscribing Language, Literature and Culture in Francophone Africa and the Caribbean

    E-Print Network [OSTI]

    DIAWARA (UNESCO, Regional Bureau for Education in Africa) "Writing, Learning and Teaching Material Rokhaya Fall Diawara Admission is free; please register by February 21 to rdelance

  12. Providing a Digital Voice for Storytellers in Africa Gary Marsden, Ilda Ladeira, Thomas Reitmaier, Nicola J Bidwell and Edwin

    E-Print Network [OSTI]

    Blake, Edwin

    Providing a Digital Voice for Storytellers in Africa Gary Marsden, Ilda Ladeira, Thomas Reitmaier, Nicola J Bidwell and Edwin Blake Abstract

  13. Energy consumption and economic development in West Africa

    SciTech Connect (OSTI)

    Chima, C.M.

    1987-01-01T23:59:59.000Z

    This study evaluates the commercial energy sector of the Economic Community of West African States (ECOWAS). Presently, an economic union exists between the 16 countries of West Africa that are members of ECOWAS. Although the ECOWAS region has plentiful resources of commercial energy, it faces problems in this sector for two reasons. First is the problem resulting from the diminishing traditional energy resources such as wood fuel and charcoal. Second, most ECOWAS members, except Nigeria, are net importers of commercial energy, and hence face a high import burden for oil. Liquid petroleum is the dominant form of commercial energy used in the ECOWAS despite the availability of other resources. This author basically argues that the best policy and strategy solution for dealing with energy problems is through a combination of regional cooperative effort, and a more-intensive country level. The intensity-of-use hypothesis is tested with case studies of Ghana, the Ivory Coast, and Nigeria. The results indicate that newly developing countries can deviate from the expectations of the hypothesis.

  14. Electricity distribution industry restructuring, electrification, and competition in South Africa

    SciTech Connect (OSTI)

    Galen, P S

    1997-07-01T23:59:59.000Z

    This paper reviews the status of the South African electricity supply industry (ESI) and proposals for reorienting and restructuring it. South Africa has been intensely examining its ESI for more than 4 years in an effort to determine whether and how it should be restructured to best support the country`s new economic development and social upliftment goals. The debate has been spirited and inclusive of most ESI stakeholders. The demands on and expectations for the ESI are many and varied. The debate has reflected this diversity of interests and views. In essence, however, there is a consensus on what is expected of the industry, namely, to extend provision of adequate, reliable, and affordable electricity service to all citizens and segments of the economy. This means a large-scale electrification program to reach as many of the nearly 50% of households currently without electricity service as soon as possible, tariff reform to promote equity and efficiency, and the upgrading of service quality now being provided by some of the newly consolidated municipal authorities. The issues involved are how best to achieve these results within the context of the national Reconstruction and Development Program, while accounting for time and resource constraints and balancing the interests of the various parties.

  15. Diabat L., Blanc Ph., Wald L., Solar radiation climate in Africa. Solar Energy, 76, 733-744, 2004. SOLAR RADIATION CLIMATE IN AFRICA

    E-Print Network [OSTI]

    Boyer, Edmond

    Diabaté L., Blanc Ph., Wald L., Solar radiation climate in Africa. Solar Energy, 76, 733-744, 2004 is very useful for preliminary assessment and modeling of solar energy systems. Following the approach: clearness index, atmosphere optics, clustering, interpolation, map, solar energy systems Nomenclature: (KTd

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

    SciTech Connect (OSTI)

    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

    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.

  17. Modeling vertical beta-diversity in tropical butterfly communities Thomas R. Walla, Steinar Engen, Philip J. DeVries and Russell Lande

    E-Print Network [OSTI]

    Devries, Philip J.

    Modeling vertical beta-diversity in tropical butterfly communities Thomas R. Walla, Steinar Engen vertical beta- diversity in tropical butterfly communities. Á/ Oikos 107: 610Á/618. We present a novel of structure present. Beta-diversity (MacArthur

  18. New interpretation of the so-called Nubian strata in northeast Africa

    SciTech Connect (OSTI)

    Klitzsch, E.H.; Squyres, C.H.

    1988-08-01T23:59:59.000Z

    Stratigraphical interpretation of the so-called Nubian Sandstone of Egypt and northern Sudan have led to new ideas on the structural and paleogeographical development of northeast Africa. The strata formerly comprised under the term Nubian Sandstone include sediments from Cambrian to Paleocene age. Based on field work and paleontological investigations during the last 10 years, these strata can be subdivided into three major cycles, each characterizing a certain structural situation of northeast Africa. The first or Paleozoic cycle comprises strata of Cambrian to Early Carboniferous age. These strata were deposited during a period of generally northern dip of northeast Africa; continental sediments transported northward interfinger with marine strata resulting from southward transgressions. Sediments of the second cycle were deposited during and after Gondwana and northern continents collided, which caused updoming of large areas of Egypt and bordering areas to the west and east. As a result, most of Egypt became subject to erosion; transgressions remained near the present northern edge of the continent, and purely continental deposition took place in northern Sudan and bordering areas in Chad and Libya. The resulting strata are similar to the Karroo of East Africa. Strata of the third cycle were deposited after Pangea began to disintegrate. Northeast Africa now had a generally northern dip again, and consequently deposition was controlled - as during the first cycle - by northward drainage and southward transgressions. This last cycle began during Late Jurassic time.

  19. Am. J. Trop. Med. Hyg., 64(1, 2)S, 2001, pp. 8596 Copyright 2001 by The American Society of Tropical Medicine and Hygiene

    E-Print Network [OSTI]

    of Tropical Medicine and Hygiene THE ECONOMIC BURDEN OF MALARIA JOHN LUKE GALLUP AND JEFFREY D. SACHS Center

  20. Multiple antibiotic resistant Escherichia coli from a tropical rain forest stream

    SciTech Connect (OSTI)

    Carrasco, C.E.; Alvarez, H.J.; Ortiz, N.; Bisbal, M.; Arias, W.; Baerga, C. [Univ. of Puerto Rico, Rio Piedras (Puerto Rico). Dept. of Biology; Hazen, T.C. [E.I. DuPont de Nemours and Co., Aiken, SC (United States). Savannah River Lab.

    1988-12-31T23:59:59.000Z

    High densities of fecal coliforms were obtained from a pristine site and sewage contaminated site in a tropical rain forest watershed in Puerto Rico. Confirmation of fecal coliform isolates as Escherichia coli was significantly lower than for temperate waters. Antibiotic resistance and multiple antibiotic resistance were common for isolates at both sites; however, the site receiving sewage effluent had a greater proportion of multiple antibiotic resistant isolates. R. plasmids were recovered from 4 MAR isolates, 2 from each site. All recovered plasmids were approximately 1 kilobase. The recovered plasmid were also capable of transforming E. coli HB101 in vitro. The high concentrations of enterobacteriaceae, small R-plasmid size, R-plasmid transformability, and long term survival of fecal origin bacteria in tropical freshwater environments give increasing importance to adequate sewage treatment, and better indicator monitoring methods for tropical areas.

  1. Impact of Secondary Eyewall Heating on Tropical Cyclone Intensity Change* XIAQIONG ZHOU, BIN WANG, XUYANG GE, AND TIM LI

    E-Print Network [OSTI]

    Wang, Bin

    Impact of Secondary Eyewall Heating on Tropical Cyclone Intensity Change* XIAQIONG ZHOU, BIN WANG is to explore the factors that might influence the intensity change of tropical cyclones (TCs) associated. Introduction Concentric eyewalls usually refer to two or more quasi-circular eyewalls separated by a convective

  2. A Comparison of Extra-tropical Cyclones in Recent Re-analyses; ERA-INTERIM, NASA-MERRA,

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    Hodges, Kevin

    separation of the identically same cyclones is typically less than 20 geodesic in both hemispheresA Comparison of Extra-tropical Cyclones in Recent Re-analyses; ERA-INTERIM, NASA-MERRA, NCEP Corresponding author: Kevin Hodges email: kih@mail.nerc-essc.ac.uk #12;Abstract Extra-tropical cyclones

  3. Variability of tropical cyclone track density in the2 North Atlantic: Observations and high-resolution3

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    Xie, Shang-Ping

    ; Emanuel 2005a)59 and the accumulated cyclone energy (ACE; Bell et al. 2000). Our focus here is on60 1 1 Variability of tropical cyclone track density in the2 North Atlantic: Observations #12; 2 Abstract23 24 Interannual-decadal variability of tropical cyclone (TC) track density

  4. SUMMARY OF 2013 ATLANTIC TROPICAL CYCLONE ACTIVITY AND VERIFICATION OF AUTHORS' SEASONAL AND TWO-WEEK FORECASTS

    E-Print Network [OSTI]

    . In addition, Accumulated Cyclone Energy (ACE) was the lowest that has been observed since 1983. This year Cyclone Energy (ACE) (92) 165 165 142 30 32% Net Tropical Cyclone Activity (NTC) (103%) 175 175 150 43 42SUMMARY OF 2013 ATLANTIC TROPICAL CYCLONE ACTIVITY AND VERIFICATION OF AUTHORS' SEASONAL AND TWO

  5. SUMMARY OF 2011 ATLANTIC TROPICAL CYCLONE ACTIVITY AND VERIFICATION OF AUTHOR'S SEASONAL AND TWO-WEEK FORECASTS

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    .50 Accumulated Cyclone Energy (ACE) (96.2) 165 160 160 160 125 Net Tropical Cyclone Activity (NTC) (100%) 180 175 such as Net Tropical Cyclone (NTC) activity and Accumulated Cyclone Energy (ACE) were at somewhat above activity. 3 #12;DEFINITIONS AND ACRONYMS Accumulated Cyclone Energy (ACE) - A measure of a named storm

  6. SUMMARY OF 2012 ATLANTIC TROPICAL CYCLONE ACTIVITY AND VERIFICATION OF AUTHORS' SEASONAL AND TWO-WEEK FORECASTS

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    Gray, William

    (MHD) (3.9) 3 4 5 0.25 6% Accumulated Cyclone Energy (ACE) (92) 70 80 99 129 140% Net Tropical Cyclone Cyclone Energy (ACE) were at above-average levels. Most hurricane activity in 2012 was concentrated of the season in the Caribbean. Integrated measures such as Net Tropical Cyclone (NTC) activity and Accumulated

  7. SUMMARY OF 2014 ATLANTIC TROPICAL CYCLONE ACTIVITY AND VERIFICATION OF AUTHORS' SEASONAL AND TWO-WEEK FORECASTS

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    Schumacher, Russ

    .0) 1 1 1 1 2 100% Major Hurricane Days (MHD) (3.9) 2 3 3 3 3.50 90% Accumulated Cyclone Energy (ACE measures such as Accumulated Cyclone Energy (ACE) and Net Tropical Cyclone (NTC) activity. We issued six. Integrated measures such as Net Tropical Cyclone (NTC) activity and Accumulated Cyclone Energy (ACE) were

  8. Tropical Cyclogenesis Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part I: Satellite Data Analyses*

    E-Print Network [OSTI]

    Li, Tim

    Tropical Cyclogenesis Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part with the Rossby wave energy dispersion of a preexisting TC. The wave trains are oriented in a northwest induced by tropical cyclone (TC) energy dispersion are revealed based on the Quick Scatterometer (Quik

  9. HILDERBRAND, DOUGLAS CLARENCE. Risk assessment of North Carolina tropical cyclones (1925-2000). (Under the direction of Dr. Lian Xie)

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    Liu, Paul

    conditions with 3.67 cubic miles of water. The next-highest value from previous tropical cyclones management decisions. #12;RISK ASSESSMENT OF NORTH CAROLINA TROPICAL CYCLONES (1925-2000) by DOUGLAS C. In 1995, he earned his Bachelor of Arts degree in geology and was accepted to

  10. Impact of Tropical Cyclones on the Heat Budget of the South Pacific Ocean S. JULLIEN,* C. E. MENKES,1

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    Impact of Tropical Cyclones on the Heat Budget of the South Pacific Ocean S. JULLIEN,* C. E. MENKES cyclones (TCs) in the South Pacific convergence zone through a complete ocean heat budget. The TC impact, in final form 4 May 2012) ABSTRACT The present study investigates the integrated ocean response to tropical

  11. Internal variability of the tropical Pacific ocean Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA

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    Jochum, Markus

    Internal variability of the tropical Pacific ocean M. Jochum Earth, Atmospheric and Planetary model of the tropical Pacific ocean is analyzed to quantify the interannual variability caused by internal variability of ocean dynamics. It is found that along the Pacific cold tongue internal variability

  12. Anatomy and evolution of a cyclonic mesoscale eddy observed in the northeastern Pacific tropical-subtropical transition zone

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    Anatomy and evolution of a cyclonic mesoscale eddy observed in the northeastern Pacific tropical and evolution of a cyclonic mesoscale eddy observed in the northeastern Pacific tropical-subtropical transition zone, J. Geophys. Res. Oceans, 118, doi:10.1002/ 2013JC009339. 1. Introduction [2] Mesoscale eddy

  13. October 1986 R. H. Johnson 721 Lower-Tropospheric Warming and Drying in Tropical Mesoscale Convective Systems

    E-Print Network [OSTI]

    Johnson, Richard H.

    October 1986 R. H. Johnson 721 Lower-Tropospheric Warming and Drying in Tropical Mesoscale components of tropical mesoscale convective systems. It is found that while the apparent heat source Q1 of mesoscale downdrafts within the mesoscale convective systems. The warming and drying at low levels

  14. Mixed-phase clouds, thin cirrus clouds, and OLR over the tropics: observations, retrievals, and radiative impacts 

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    Lee, Joonsuk

    2009-06-02T23:59:59.000Z

    The tropics is a very important region in terms of earth’s radiation budget because the net radiative heating is largest in the tropics and that surplus energy is redistributed by the circulations of oceans and atmospheres. Moreover, a large number...

  15. Accuracy of small footprint airborne LiDAR in its predictions of tropical moist forest stand structure

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    Chave, Jérôme

    . Introduction Tropical forests offer a broad range of ecosystem services, from carbon sequestration to potential valuation of biodiversity compo- nents. But, forest conversion in the tropics has dramatically altered and verifiable", and this prompted renewed interest in providing standardized and reproducible methods of forest

  16. Optimal photosynthetic use of light by tropical tree crowns achieved by adjustment of individual leaf angles and nitrogen content

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    Lechowicz, Martin J.

    Smithsonian Tropical Research Institute, Roosevelt Avenue, Tupper Building ­ 401, Balboa, Anco´n, Panama´, Republic of Panama´ Received: 8 September 2008 Returned for revision: 8 October 2008 Accepted: 25 November per area, tropical trees, radiation use efficiency, scaling, leaf angle, canopy architecture, big leaf

  17. Predictability of a Mediterranean Tropical-Like Storm Downstream of the Extratropical Transition of Hurricane Helene (2006)

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    Chaboureau, Jean-Pierre

    2006-01-01T23:59:59.000Z

    Predictability of a Mediterranean Tropical-Like Storm Downstream of the Extratropical Transition downstream. The present study focuses on the predictability of a Mediterranean tropical-like storm (Medicane) on 26 September 2006 downstream of the ET of Hurricane Helene from 22 to 25 September. While

  18. Climate response to tropical cyclone-induced ocean mixing in an1 Earth system model of intermediate complexity2

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    Climate response to tropical cyclone-induced ocean mixing in an1 Earth system model of intermediate system model of intermediate complexity. The parameterization is based on21 previously published global. Abstract19 We introduce a parameterization of ocean mixing by tropical cyclones (TCs) into20 an Earth

  19. High Cloud Properties from Three Years of MODIS Terra and Aqua Collection-4 Data over the Tropics

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    Baum, Bryan A.

    High Cloud Properties from Three Years of MODIS Terra and Aqua Collection-4 Data over the Tropics) ABSTRACT This study surveys the optical and microphysical properties of high (ice) clouds over the Tropics on the gridded level-3 cloud products derived from the measurements acquired by the Moderate Resolution Imaging

  20. Tropical Cyclone Changes in the Western North Pacific in a Global Warming Scenario MARKUS STOWASSER, YUQING WANG, AND KEVIN HAMILTON

    E-Print Network [OSTI]

    Wang, Yuqing

    Tropical Cyclone Changes in the Western North Pacific in a Global Warming Scenario MARKUS STOWASSER The influence of global warming on the climatology of tropical cyclones in the western North Pacific basin Model version 2 (CCSM2) coupled global climate model. The regional model is first tested in 10 yr