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Detailed Reference Information |
Hickler, T., Eklundh, L., Seaquist, J.W., Smith, B., Ardö, J., Olsson, L., Sykes, M.T. and Sjöström, M. (2005). Precipitation controls Sahel greening trend. Geophysical Research Letters 32: doi: 10.1029/2005GL024370. issn: 0094-8276. |
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The Sahel region has been identified as a "hot spot" of global environmental change, but understanding of the roles of different climatic and anthropogenic forcing factors driving change in the region is incomplete. We show that a process-based ecosystem model driven by climatic and atmospheric CO2 data alone closely reproduces the satellite-observed greening trend of the Sahel vegetation and its interannual variability between 1982 and 1998. Changes in precipitation were identified as the primary driver of the aggregated simulated vegetation changes. According to the model, the increasing carbon uptake through vegetation was associated with an increasing relative carbon sink; but integrated over the whole period, the Sahel was predicted to be a net source of carbon. |
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Abstract |
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Keywords
Biogeosciences, Ecosystems, structure and dynamics, Biogeosciences, Biosphere/atmosphere interactions, Biogeosciences, Biogeochemical cycles, processes, and modeling (0412, 0793, 1615, 4805, 4912), Biogeosciences, Carbon cycling, Biogeosciences, Remote sensing |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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