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Recent trends in vegetation dynamics in the African Sahel and their relationship to climate

Domaine:

climateenvironment and energygeospatial
Créateur:
HerAnyamba, AssafTucker, Compton J.
Éditeur:
MarMar
Éditeur:
Elsevier
Hôte:avatar
Contrary to assertions of widespread irreversible desertification in the African Sahel, a recent increase in seasonal greenness over large areas of the Sahel has been observed, which has been interpreted as a recovery from the great Sahelian droughts. This research investigates temporal and spatial patterns of vegetation greenness and rainfall variability in the African Sahel and their interrelationships based on analyses of Normalized Difference Vegetation Index (NDVI) time series for the period 1982–2003 and gridded satellite rainfall estimates. While rainfall emerges as the dominant causative factor for the increase in vegetation greenness, there is evidence of another causative factor, hypothetically a human-induced change superimposed on the climate trend.

Visit

doi.orgmdsoar.org

Tags

GreeningTime series analysisDesertificationSahelRemote sensing

Licenses

This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.Public Domainhttps://creativecommons.org/publicdomain/mark/1.0/

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