PUBLICATIONS

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Rainfall intensification in tropical semi-arid regions: the Sahelian case

Gérémy Panthou, Thierry Lebel, Theo Vischel, Guillaume Quantin, Youssouph Sane, Ousmane Ndiaye, Aïda Diongue-Niang, and Marianne Diopkane

An anticipated consequence of ongoing global warming is the intensification of the rainfall regimes meaning longer dry spells and heavier precipitation when it rains, with potentially high hydrological and socio-economic impacts. The semi-arid regions of the intertropical band, such as…

Assessment of the Representation of West African Storm Lifecycles in Convection‐Permitting Simulations

Julia Crook, Cornelia Klein, Sonja Folwell, Christopher M. Taylor, Douglas J. Parker, Rachel Stratton, and Thorwald Stein

Convection‐permitting models perform better at representing the diurnal cycle and the intermittency of convective rainfall over land than parameterized‐convection models. However, most of the previous model assessments have been from an Eulerian point of view, while key impacts of the…

Trends in flood events and their relationship to extreme rainfall in an urban area of Sahelian West Africa: The case study of Ouagadougou, Burkina Faso

Fowe Tazen, Abdoulaye Diarra, Rodrigue F.W. Kabore, Boubacar Ibrahim, Maïmouna Bologo/Traoré, Karim Traoré, and Harouna Karambiri

Urban areas in Sahelian West Africa are highly vulnerable to extreme hydro‐meteorological events. In recent years, Burkina Faso has experienced several natural disasters with floods being the most frequent. This study investigates flood trends in Ouagadougou and their relationship to…

Less frequent and more intense rainfall along the coast of the Gulf of Guinea in West and Central Africa (1981–2014)

Adeline Bichet and Arona Diedhiou

Since the 1990s, rainfall has been reported to increase over the Gulf of Guinea. In light of the devastating floods that have occurred since the 1990s over the coastal areas of this region, this work aims to better characterize the…

Intensity–duration–frequency (IDF) rainfall curves in Senegal

Youssouph Sane, Geremy Panthou, Ansoumana Bodian, Theo Vischel, Thierry Lebel, Honore Dacosta, Guillaume Quantin, Catherine Wilcox, Ousmane Ndiaye, Aida Diongue-Niang, and Mariane Diop Kane

Urbanization resulting from sharply increasing demographic pressure and infrastructure development has made the populations of many tropical areas more vulnerable to extreme rainfall hazards. Characterizing extreme rainfall distribution in a coherent way in space and time is thus becoming an…

Improved climatological precipitation characteristics over West Africa at convection-permitting scales

Ségolène Berthou, David P. Rowell, Elizabeth J. Kendon, Malcolm J. Roberts, Rachel A. Stratton, Julia A. Crook, and Catherine Wilcox

The West African climate is unique and challenging to reproduce using standard resolution climate models as a large proportion of precipitation comes from organised deep convection. For the first time, a regional 4.5 km convection permitting simulation was performed on a…

Effect of the African greenbelt position on West African summer climate: a regional climate modeling study

Adama Bamba, Ismaila Diallo, N’Datchoh E. Touré, Kouakou Kouadio, Abdourahamane Konaré, Mamadou S. Dramé, Arona Diedhiou, Siélé Silué, Madina Doumbia, and Moustapha Tall

This modeling study is conducted to examine the potential impact of the reforestation (greenbelt) location (either in Sahel or in Guinean region) on West African summer climate system. To this end, three simulations using the regional climate model RegCM4 driven by…

Ecosystem structural changes controlled by altered rainfall climatology in tropical savannas

Wenmin Zhang, Martin Brandt, Josep Penuelas, Françoise Guichard, Xiaoye Tong, Feng Tian, and Rasmus Fensholt

Tropical savannas comprise mixed woodland grassland ecosystems in which trees and grasses compete for water resources thereby maintaining the spatial structuring of this ecosystem. A global change in rainfall climatology may impact the structure of tropical savanna ecosystems by favouring…

Can explicit convection improve modelled dust in summertime West Africa?

Alexander J. Roberts, Margaret J. Woodage, John H. Marsham, Ellie J. Highwood, Claire L. Ryder, Willie McGinty, Simon Wilson, and Julia Crook

Global and regional models have large systematic errors in their modelled dust fields over West Africa. It is well established that cold-pool outflows from moist convection (haboobs) can raise over 50 % of the dust over parts of the Sahara…

Salomon Obahoundje, Arona Diedhiou, Eric Antwi Ofosu, Sandrine Anquetin, Baptiste François, Julien Adounkpe, Ernest Amoussou, Yao Morton Kouame, Kouakou Lazare Kouassi, Vami Hermann Nguessan and Marc Youan Ta

West African basins play a vital role in the socio-economic development of the region. They are mostly trans-boundary and sources of different land use practices. This work attempts to assess the spatio-temporal land use and land cover changes over three…