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Land-surface characteristics and climate in West Africa : Models’ biases and impacts of historical anthropogenically-induced deforestation

Sy, Souleymane; Noblet-Ducoudré, Nathalie de; Quesada, Benjamin 1; Sy, Ibrahima; Dieye, Amadou Moctar; Gaye, Amadou Thierno; Sultan, Benjamin
1 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)


Land Use Land-Cover Change (LULCC), such as deforestation, affects the climate system and land-atmosphere interactions. Using simulations carried out within the LUCID (Land Use and Climate, IDentification of robust Impacts) project framework, we first quantify the role of historical land-cover change induced by human activities on surface climate in West Africa. Focusing on two contrasted African regions, we find that climate responses of land-use changes are small but they are still statistically significant. In Western Sahel, a statistically significant near-surface atmospheric cooling and a decrease in water recycling are simulated in summer in response to LULCC. Over the Guinean zone, models simulate a significant decrease in precipitation and water recycling in autumn in response to LULCC. This signal is comparable in magnitude with the effect induced by the increase in greenhouse gases. Simulated climate changes due to historical LULCC could however be underestimated because: (i) the prescribed LULCC can be underestimated in those regions; (ii) the climate models underestimate the coupling strength between West African surface climate and leaf area index (LAI) and (iii) the lack of interactive LAI in some models. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000076439
Veröffentlicht am 16.11.2017
DOI: 10.3390/su9101917
Zitationen: 10
Web of Science
Zitationen: 11
Zitationen: 11
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 2071-1050
KITopen-ID: 1000076439
HGF-Programm 12.02.02 (POF III, LK 01) Vegetation climate- and land use system
Erschienen in Sustainability
Verlag MDPI
Band 9
Heft 10
Seiten Art.Nr. 1917
Schlagwörter climate change; deforestation; land use-land cover change; land-atmosphere interaction; land surface models; LUCID; West Africa
Nachgewiesen in Scopus
Web of Science
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