University of Leeds2014-09-11 5:09 PM

Impacts of El Niño Southern Oscillation on the global yields of major crops

Abstract


The monitoring and prediction of climate-induced variations in crop yields, production and export prices in major food-producing regions have become important to enable national governments in import-dependent countries to ensure supplies of affordable food for consumers. Although the El Niño/Southern Oscillation (ENSO) often affects seasonal temperature and precipitation, and thus crop yields in many regions, the overall impacts of ENSO on global yields are uncertain. Here we present a global map of the impacts of ENSO on the yields of major crops and quantify its impacts on their global-mean yield anomalies. Results show that El Niño likely improves the global-mean soybean yield by 2.1—5.4% but appears to change the yields of maize, rice and wheat by −4.3 to +0.8%. The global-mean yields of all four crops during La Niña years tend to be below normal (−4.5 to 0.0%). Our findings highlight the importance of ENSO to global crop production.


Full Article

KEYWORDS

SHARE & LIKE

COMMENTS

ABOUT THE AUTHOR

University of Leeds

0 Following 0 Fans 0 Projects 5 Articles

SIMILAR ARTICLES

AbstractWe have assessed the microbial ecology on the surface of Mittivakkat glacier in SE-Greenland during the exceptional high melting season in July

Read More

AbstractThe carbon budget of the tropics has been perturbed as a result of human influences. Here, we attempt to construct a ‘bottom-up’ analysis of th

Read More

AbstractWe use 3 years of Cryosat-2 radar altimeter data to develop the first comprehensive assessment of Antarctic ice sheet elevation change. This ne

Read More

AbstractAtmospheric new-particle formation affects climate and is one of the least understood atmospheric aerosol processes. The complexity and variabi

Read More

AbstractThe monitoring and prediction of climate-induced variations in crop yields, production and export prices in major food-producing regions have b

Read More