Next Article in Journal
R&D Project Selection Incorporating Customer-Perceived Value and Technology Potential: The Case of the Automobile Industry
Previous Article in Journal
Revealing the Linkage Network Dynamic Structures of Chinese Maritime Ports through Automatic Information System Data
Article Menu
Issue 10 (October) cover image

Export Article

Open AccessArticle
Sustainability 2017, 9(10), 1917; doi:10.3390/su9101917

Land-Surface Characteristics and Climate in West Africa: Models’ Biases and Impacts of Historical Anthropogenically-Induced Deforestation

1
Laboratoire de Physique de l’Atmosphère et de l’Océan Siméon-Fongang (LPAO-SF), Ecole Supérieure Polytechnique, Cheikh Anta Diop University, B.P. 5005 Dakar-Fann, Sénégal
2
Centre de Suivi Ecologique, Fann-Résidence, B.P. 15532 Dakar-Fann, Sénégal
3
Laboratoire d’Océanographie et du Climat: Expérimentations et Approches Numériques (LOCEAN), Sorbonne Universités (UPMC, Univ Paris 06)-CNRS-IRD-MNHN, 75005 Paris, France
4
Laboratoire des Sciences du Climat et de l’Environnement (LSCE), Unité Mixte CEA-CNRS-UVSQ Bât. 712, Point Courrier 132, 91191 Gif-sur-Yvette CEDEX, France
5
Institute of Meteorology and Climate Research–Karlsruhe Institute of Technology (IMK-IFU, KIT), 82467 Garmisch-Partenkirchen, Germany
*
Author to whom correspondence should be addressed.
Received: 31 August 2017 / Revised: 10 October 2017 / Accepted: 12 October 2017 / Published: 23 October 2017
View Full-Text   |   Download PDF [9860 KB, uploaded 25 October 2017]   |  

Abstract

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. Finally, our study reveals indirect atmospheric processes triggered by LULCC. Over the Western Sahel, models reveal that a significant decrease in solar reflection tend to cool down the surface and thus counteract the atmospheric feedback. Conversely, over the Guinea zone, models reveal that the indirect atmospheric processes and turbulent heat fluxes dominate the climatic responses over the direct effects of LULCC. View Full-Text
Keywords: climate change; deforestation; land use-land cover change; land-atmosphere interaction; land surface models; LUCID; West Africa climate change; deforestation; land use-land cover change; land-atmosphere interaction; land surface models; LUCID; West Africa
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Sy, S.; Noblet-Ducoudré, N.D.; Quesada, B.; Sy, I.; Dieye, A.M.; Gaye, A.T.; Sultan, B. Land-Surface Characteristics and Climate in West Africa: Models’ Biases and Impacts of Historical Anthropogenically-Induced Deforestation. Sustainability 2017, 9, 1917.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sustainability EISSN 2071-1050 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top