Sécheresse et changement climatique en Afrique de l'ouest

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Publisher : Editions Universitaires Europeennes
ISBN 13 : 9783841666314
Total Pages : 104 pages
Book Rating : 4.6/5 (663 download)

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Book Synopsis Sécheresse et changement climatique en Afrique de l'ouest by : Kondi Akara Ghafi

Download or read book Sécheresse et changement climatique en Afrique de l'ouest written by Kondi Akara Ghafi and published by Editions Universitaires Europeennes. This book was released on 2015-08-18 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: La secheresse demeure l'une des consequences nefastes des changements climatiques en Afrique. Elle est egalement l'un des trois risques climatiques majeurs sur le territoire de la Republique du Benin en dehors des inondations et des vents violents. Au cours de la derniere decennie, les populations du nord Benin ont ete frequemment surprises par des sequences de secheresse. Il se pose donc la question de la prevision du phenomene dans cette partie du pays. La presente etude vise a contribuer a la mise en place d'un systeme de prevision de la secheresse en Afrique tropicale. Pour ce faire, une enquete a d'abord ete menee afin de faire l'etat des lieux des situations de secheresses, evaluer leurs impacts et faire des propositions pour l'adaptation et l'attenuation de leurs effets. Ensuite, plusieurs donnees climatiques de sources differentes ont ete croisees pour voir comment ces secheresses ont evolue dans le passe et quelle est la variabilite atmospherique associee a une telle situation. Enfin, des modeles climatiques ont ete etudies pour prevoir l'evolution du phenomene afin de prendre les mesures adequates."

Processus et enjeux d'eau en Afrique de l'Ouest soudano-sahélienne

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Publisher : Archives contemporaines
ISBN 13 : 281300314X
Total Pages : 322 pages
Book Rating : 4.8/5 (13 download)

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Book Synopsis Processus et enjeux d'eau en Afrique de l'Ouest soudano-sahélienne by : Luc Descroix

Download or read book Processus et enjeux d'eau en Afrique de l'Ouest soudano-sahélienne written by Luc Descroix and published by Archives contemporaines. This book was released on 2018-09-21 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce livre décrit les processus hydrologiques et leurs dynamiques passées et actuelles au gré de l’évolution des agrosystèmes, de leur emprise spatiale, de leur capacité d’adaptation au changement global, et aux changements climatiques. Il se fonde sur l’indicateur que représente la capacité de rétention en eau des sols, qui conditionne la bonne alimentation en eau et en nutriments des systèmes racinaires, tant des cultures que de la végétation naturelle. C’est aussi cette rétention en eau qui permet de limiter le ruissellement et les inondations en aval. Parti d’une réflexion sur le paradoxe hydrologique du Sahel (la hausse des écoulements observée dans cette région durant la sécheresse), l’ouvrage décrit les enjeux de ces évolutions spatio-temporelles et entend montrer que la pression démographique n’est pas forcément un facteur de dégradation des agrosystèmes; au contraire, les régions les plus densément peuplées à l’heure actuelle sont très souvent celles qui font preuve de la plus grande capacité de résilience et d’adaptation aux changements climatiques et environnementaux.

Climate change in West Africa

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Publisher : Editions L'Harmattan
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Climate change in West Africa by : Massimiliano Mondelli

Download or read book Climate change in West Africa written by Massimiliano Mondelli and published by Editions L'Harmattan. This book was released on 2009 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ces contributions à un colloque portant sur le changement climatique en Afrique de l'Ouest détaillent les sujets suivants : le lien entre climat et crise financière, l'initiative ivoirienne sur les changements climatiques, le dialogue environnemental en Afrique de l'Ouest, les stratégies d'adaptation et de gestion de ces changements climatiques.

Impact du changement climatique sur le cycle de l'eau en Afrique de l'Ouest

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Publisher :
ISBN 13 :
Total Pages : 187 pages
Book Rating : 4.:/5 (494 download)

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Book Synopsis Impact du changement climatique sur le cycle de l'eau en Afrique de l'Ouest by : Tristan d' Orgeval

Download or read book Impact du changement climatique sur le cycle de l'eau en Afrique de l'Ouest written by Tristan d' Orgeval and published by . This book was released on 2006 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'Afrique de l'Ouest a subi au cours des 50 dernières années une des plus fortes variations de pluviométrie observées à l'échelle du globe. Nous nous intéressons ici aux incertitudes liées à la modélisation des changements climatiques récents et à venir sur cette région. Dans un premier temps nous étudions l'impact du changement climatique anthropique sur les précipitations d'Afrique de l'Ouest dans différents modèles couplés. Dans une seconde partie, des développements du modèle de surface ORCHIDEE sont inclus pour améliorer la représentation du cycle de l'eau Africain dans des simulations forcées. Ces développements permettent de détailler les différentes sources d'incertitudes dans la simulation moyenne des débits de fleuves. En dernier lieu, la représentation des débits de fleuves Africains est évaluée sur les 50 dernières années. Elle met en valeur la prépondérance de la variabilité du forçage atmosphérique devant l'impact de l'activité anthropique dans la relation pluie-débit.

Aires Protégées Résilientes au Changement Climatique, PARCC Afrique de l'Ouest

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Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (21 download)

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Book Synopsis Aires Protégées Résilientes au Changement Climatique, PARCC Afrique de l'Ouest by : Lambert Worgue Yemye

Download or read book Aires Protégées Résilientes au Changement Climatique, PARCC Afrique de l'Ouest written by Lambert Worgue Yemye and published by . This book was released on 2012 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Climat et agriculture en Afrique de l'Ouest

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Publisher :
ISBN 13 :
Total Pages : 378 pages
Book Rating : 4.:/5 (862 download)

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Book Synopsis Climat et agriculture en Afrique de l'Ouest by : Philippe Roudier

Download or read book Climat et agriculture en Afrique de l'Ouest written by Philippe Roudier and published by . This book was released on 2012 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse cherche à étudier les relations climat/agriculture en Afrique de l'Ouest. Dans un premier temps, nous passons en revue plusieurs études qui donnent une estimation de l'impact du climat futur sur les rendements agricoles. La valeur médiane d'évolution des rendements futurs se situe ainsi vers -11%. Il semble de plus nécessaire de travailler plus en détail sur les scénarii futurs, parfois trop limités et sur les différences entre variétés. Nous nous fondons sur ces constatations pour réaliser une étude d'impact originale utilisant des données observées sur 35 stations météorologiques en Afrique de l'Ouest. Les résultats montrent entre autre une évolution négative du rendement moyen principalement due à l'augmentation de température que la pluie peut seulement atténuer ou aggraver. On note également un impact plus négatif pour les variétés à cycle court et constant. Cela nous pousse donc à étudier l'intérêt des prévisions climatiques saisonnières qui permettent de minimiser l'impact de l'aléa pluviométrique. Nous calculons leur valeur pour les cultivateurs de mil nigériens en utilisant un modèle économique. Les résultats montrent un impact sur le revenu globalement positif (+6.9%), même en années sèches et avec une précision d'une précision proche de l'existant. Enfin, afin d'étudier des points que l'évaluation théorique laissait en suspens nous élaborons au Sénégal des ateliers participatifs qui visent à étudier avec les acteurs locaux les changements de stratégies culturales en réaction à des prévisions climatiques, ainsi que le gain engendré par ces prévisions sur les rendements. L'impact sur les rendements est évalué avec l'aide d'un expert et montre que les prévisions ont certes un effet nul dans 62% des cas, mais qu'il est positif dans 31%.

Contribution à l'étude de l'impact de la variabilité climatique sur les ressources en eau en Afrique de l'ouest. Analyse des conséquences d'une sécheresse persistante

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Publisher :
ISBN 13 :
Total Pages : 257 pages
Book Rating : 4.:/5 (116 download)

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Book Synopsis Contribution à l'étude de l'impact de la variabilité climatique sur les ressources en eau en Afrique de l'ouest. Analyse des conséquences d'une sécheresse persistante by : Mahaman Ouédraogo

Download or read book Contribution à l'étude de l'impact de la variabilité climatique sur les ressources en eau en Afrique de l'ouest. Analyse des conséquences d'une sécheresse persistante written by Mahaman Ouédraogo and published by . This book was released on 2001 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Climate Change and Water Resources in Africa

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Author :
Publisher : Springer Nature
ISBN 13 : 3030612252
Total Pages : 521 pages
Book Rating : 4.0/5 (36 download)

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Book Synopsis Climate Change and Water Resources in Africa by : Salif Diop

Download or read book Climate Change and Water Resources in Africa written by Salif Diop and published by Springer Nature. This book was released on 2021-02-15 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this book is on the key water-related vulnerabilities to climate change in Africa, particularly in its most vulnerable areas, exploring potential management responses to such vulnerabilities. The African countries are particularly exposed and vulnerable to the negative impacts of climate change, with important impacts on water resources and hydrological systems, water availability, water resource management and sea level variations. Already, under various anthropogenic pressures, the status of water resources in Africa has been changing over the past decades, with decreasing water quality, falling groundwater levels, and variability in rainfall, both in terms of timing and intensity. Climate change will further accelerate the rate of change, affecting the ability of people and societies to respond in a timely manner. It is clear that there is no quick fix to the pressures imposed on water resources by climate change. Increasing the resilience of ecosystems and communities to extreme events such as flooding and drought, and integrating climate change risks and opportunities into development decision-making is indeed a key challenge, as much a technical climate-change one, as a political and developmental challenge. The book, in this regard, intends to contribute to the debate around climate change in relation to water resources management in Africa, and in particular inform policy decisions and actions that will improve governments’ and communities’ ability to manage the challenges of climate change and variability in relation to the aquatic ecosystems that they depend on. The knowledge collected in this book will benefit policy makers, researchers, as well as other stakeholders.

Climate Prediction and Agriculture

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Publisher : Springer Science & Business Media
ISBN 13 : 3540446508
Total Pages : 319 pages
Book Rating : 4.5/5 (44 download)

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Book Synopsis Climate Prediction and Agriculture by : Mannava VK Sivakumar

Download or read book Climate Prediction and Agriculture written by Mannava VK Sivakumar and published by Springer Science & Business Media. This book was released on 2007-05-26 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on an International Workshop held in Geneva in 2005, this book reviews the advances made so far in seasonal climate predictions and their applications for management and decision-making in agriculture. It also identifies the challenges to be addressed in the next 5 to 10 years to further enhance operational applications of climate predictions in agriculture, especially in developing countries.

Congo Basin Hydrology, Climate, and Biogeochemistry

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Publisher : John Wiley & Sons
ISBN 13 : 1119656974
Total Pages : 596 pages
Book Rating : 4.1/5 (196 download)

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Book Synopsis Congo Basin Hydrology, Climate, and Biogeochemistry by : Raphael M. Tshimanga

Download or read book Congo Basin Hydrology, Climate, and Biogeochemistry written by Raphael M. Tshimanga and published by John Wiley & Sons. This book was released on 2022-03-22 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: New scientific discoveries in the Congo Basin as a result of international collaborations The Congo is the world's second largest river basin and home to 120 million people. Understanding the cycling of water, sediments, and nutrients is important as the region faces climatic and anthropogenic change. Congo Basin Hydrology, Climate, and Biogeochemistry: A Foundation for the Future explores variations in and influences on rainfall, hydrology and hydraulics, and sediment and carbon dynamics. It features contributions from experts in the region and their international collaborators. Volume highlights include: New in-situ and remotely sensed measurements and model results Use of historic data to assess precipitation and hydrologic changes Exploration of water exchange between wetlands and rivers Biogeochemical processes in the Congo's forests and wetlands A scientific foundation for hydrologic resource management in the region Studies from different parts of the Congo river and its adjoining basins This book is available in English and French. The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals. Find out more about this book in this short video and this article.

Face à un avenir incertain : comment les forêts et les populations peuvent s’adapter au changement climatique

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Publisher : CIFOR
ISBN 13 : 9791412758
Total Pages : 100 pages
Book Rating : 4.7/5 (914 download)

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Book Synopsis Face à un avenir incertain : comment les forêts et les populations peuvent s’adapter au changement climatique by : Bruno Locatelli

Download or read book Face à un avenir incertain : comment les forêts et les populations peuvent s’adapter au changement climatique written by Bruno Locatelli and published by CIFOR. This book was released on with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bioclimatology and Biogeography of Africa

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Publisher : Springer Science & Business Media
ISBN 13 : 3540851925
Total Pages : 252 pages
Book Rating : 4.5/5 (48 download)

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Book Synopsis Bioclimatology and Biogeography of Africa by : Henry N. Houérou

Download or read book Bioclimatology and Biogeography of Africa written by Henry N. Houérou and published by Springer Science & Business Media. This book was released on 2008-12-10 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering an area of over 130 million km2 spanning the Mediterranean, equator and tropics, the African continent features a spectacular geographic diversity. Consequently, it is characterised by extremely variable climatic, edaphic and ecological conditions, associated with a wide range of natural vegetation and wildlife, as well as human population density, crops and livestock. In this book, Henry Le Houérou presents his bioclimatic and biogeographic classification of Africa. The extensive data provide the basis for comparisons between various African regions, and with regions on other continents such as Latin America or the Indian subcontinent. The results constitute a rational basis for national, regional and sub-regional rural development planning, and for agricultural research dealing with aspects such as plant and animal introductions, the extrapolation or interpolation of experimental or developmental findings, and ecosystems dynamics. Possible problems of applications are also examined.

Regional Hydrological Impacts of Climatic Change: Hydroclimatic variability

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Publisher :
ISBN 13 : 9781901502138
Total Pages : 318 pages
Book Rating : 4.5/5 (21 download)

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Book Synopsis Regional Hydrological Impacts of Climatic Change: Hydroclimatic variability by : Thorsten Wagener

Download or read book Regional Hydrological Impacts of Climatic Change: Hydroclimatic variability written by Thorsten Wagener and published by . This book was released on 2005 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Wadi Flash Floods

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Publisher : Springer Nature
ISBN 13 : 9811629048
Total Pages : 559 pages
Book Rating : 4.8/5 (116 download)

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Book Synopsis Wadi Flash Floods by : Tetsuya Sumi

Download or read book Wadi Flash Floods written by Tetsuya Sumi and published by Springer Nature. This book was released on 2021-10-11 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book brings together research studies, developments, and application-related flash flood topics on wadi systems in arid regions. The major merit of this comprehensive book is its focus on research and technical papers as well as case study applications in different regions worldwide that cover many topics and answer several scientific questions. The book chapters comprehensively and significantly highlight different scientific research disciplines related to wadi flash floods, including climatology, hydrological models, new monitoring techniques, remote sensing techniques, field investigations, international collaboration projects, risk assessment and mitigation, sedimentation and sediment transport, and groundwater quality and quantity assessment and management. In this book, the contributing authors (engineers, researchers, and professionals) introduce their recent scientific findings to develop suitable, applicable, and innovative tools for forecasting, mitigation, and water management as well as society development under seven main research themes as follows: Part 1. Wadi Flash Flood Challenges and Strategies Part 2. Hydrometeorology and Climate Changes Part 3. Rainfall–Runoff Modeling and Approaches Part 4. Disaster Risk Reduction and Mitigation Part 5. Reservoir Sedimentation and Sediment Yield Part 6. Groundwater Management Part 7. Application and Case Studies The book includes selected high-quality papers from five series of the International Symposium on Flash Floods in Wadi Systems (ISFF) that were held in 2015, 2016, 2017, 2018, and 2020 in Japan, Egypt, Oman, Morocco, and Japan, respectively. These collections of chapters could provide valuable guidance and scientific content not only for academics, researchers, and students but also for decision-makers in the MENA region and worldwide.

West African Studies Regional Atlas on West Africa

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Publisher : OECD Publishing
ISBN 13 : 9264056769
Total Pages : 288 pages
Book Rating : 4.2/5 (64 download)

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Book Synopsis West African Studies Regional Atlas on West Africa by : OECD

Download or read book West African Studies Regional Atlas on West Africa written by OECD and published by OECD Publishing. This book was released on 2009-07-15 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This atlas describes the West African region, its population, settlement, territories, its economy and its vulnerabilities. It analyses the developments and the ways in which West Africa is conforming to a constantly changing global environment.

Report of the Ninth Session of the Committee for Inland Fisheries of Africa

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Publisher : Food & Agriculture Org.
ISBN 13 : 9789250037042
Total Pages : 106 pages
Book Rating : 4.0/5 (37 download)

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Book Synopsis Report of the Ninth Session of the Committee for Inland Fisheries of Africa by : Food and Agriculture Organization of the United Nations. Committee for Inland Fisheries of Africa. Session

Download or read book Report of the Ninth Session of the Committee for Inland Fisheries of Africa written by Food and Agriculture Organization of the United Nations. Committee for Inland Fisheries of Africa. Session and published by Food & Agriculture Org.. This book was released on 1995 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Agroenvironmental transformation in the Sahel: Another kind of "Green Revolution"

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Author :
Publisher : Intl Food Policy Res Inst
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4./5 ( download)

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Book Synopsis Agroenvironmental transformation in the Sahel: Another kind of "Green Revolution" by : Chris Reij, Gray Tappan, Melinda Smale

Download or read book Agroenvironmental transformation in the Sahel: Another kind of "Green Revolution" written by Chris Reij, Gray Tappan, Melinda Smale and published by Intl Food Policy Res Inst. This book was released on with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: