Robustness of the influence of El Nino on the spatial extent of tropical drought

Lyon, B
Advances in Geosciences
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It has been well established that drought frequently emerges in several tropical regions following the onset of El Niño. An important characteristic of such droughts is their spatial extent, which has recently been linked to the strength of a particular El Niño event. Here the robustness of this relationship is examined through comparison of results from several gridded precipitation analyses for the global tropics. It is found that there is very good agreement across these datasets, including those which incorporate satellite rainfall estimates, confirming that maximum drought extent in tropical land areas increases nearly linearly with associated maximum sea surface temperature anomalies in the east-central tropical Pacific during El Niño events.
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Advances in Geosciences
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Journal Issue/Article
Grassland Society of Southern Africa

The Grassland Society of Southern Africa (GSSA) is involved and concerned with the science and practice of range and pasture management. This broad field involves primarily the use and conservation of natural resources. It encompasses applied fields such as livestock production, wildlife management, nature conservation, water catchment management and range and mine-dump rehabilitation. The disciplines include, amongst others, ecology, botany zoology, range and pasture science, animal science, soil science and genetics. This collection includes journal articles from the African Journal of Range and Forage Science as well as related articles and reports from throughout the Southern African region.