Agricultural extreme drought assessment at global level using the FAO-Agricultural Stress Index System (ASIS)

Drought is one of the most frequent climate-related disasters occurring across large portions of globe often with devastating consequences for the food security of agricultural households. This study using the FAO-Agricultural Stress Index System (ASIS) analyse the droughts occurred on the agricultu...

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Bibliographic Details
Published inWeather and climate extremes Vol. 27; p. 100184
Main Author Rojas, Oscar
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.2020
Elsevier
Subjects
Agricultural drought
ASIS
El Niño
ONI
Remote sensing
ASIS
El Niño
ONI
Agricultural drought
Remote sensing
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Summary:Drought is one of the most frequent climate-related disasters occurring across large portions of globe often with devastating consequences for the food security of agricultural households. This study using the FAO-Agricultural Stress Index System (ASIS) analyse the droughts occurred on the agricultural areas during the last 30 + years. In spite of the climate change's projections that foresee an increase on drought episodes this study reveal not clear trend on the number and/or intensity of droughts at global or continental level. El Niño/La Niña dominance phases show to explain most of the variation on the agricultural areas affected by drought. From the analysis of the most intense of each El Niño, La Niña and Neutral events (1950–2016) the study findings reveal a constant increase of the sea surface temperature (SST) for El Niño 3.4 region in the tropical Pacific Ocean. In addition a distancing between extreme El Niño events was detected and increase on “warm” Neutral events in recent years that could trigger favourable conditions for agricultural droughts in the future.
ISSN:2212-0947
2212-0947
DOI:10.1016/j.wace.2018.09.001