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Modeling the effect of a heat wave on maize production in the USA and its implications on food security in the developing world

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Title Modeling the effect of a heat wave on maize production in the USA and its implications on food security in the developing world
 
Creator Chung, U.
Gbegbelegbe, Sika
Shiferaw, Bekele
Robertson, Richard D.
Yun JI
Tesfaye Fantaye, Kindie
Hoogenboom, Gerrit
Sonder, Kai
 
Subject climate change
agriculture
food security
maize
 
Description This study uses geo-spatial crop modeling to quantify the biophysical impact of weather extremes. More specifically, the study analyzes the weather extreme which affected maize production in the USA in 2012; it also estimates the effect of a similar weather extreme in 2050, using future climate scenarios. The secondary impact of the weather extreme on food security in the developing world is also assessed using trend analysis. We used historical weather data for severe extreme events that have occurred in the USA. The data were obtained from the National Climatic Data Center (NCDC) of the National Oceanic and Atmospheric Administration (NOAA). In addition we used five climate scenarios: the baseline climate which is typical of the late 20th century (2000s) and four future climate scenarios which involve a combination of two emission scenarios (A1B and B1) and two global circulation models (CSIRO-Mk3.0 and MIROC 3.2). DSSAT 4.5 was combined with GRASS GIS for geo-spatial crop modeling. Simulated maize grain yield across all affected regions in the USA indicates that average grain yield across the USA Corn Belt would decrease by 29% when the weather extremes occur using the baseline climate. If the weather extreme were to occur under the A1B emission scenario in the 2050s respectively, average grain yields would decrease by 38% and 57%, under the CSIRO-Mk3.0 and MIROC 3.2 global climate models, respectively.
 
Date 2014
2015-09-16T17:00:27Z
2015-09-16T17:00:27Z
 
Type Journal Article
 
Identifier Chung U, Gbegbelegbe S, Shiferaw B, Robertson R, Yun JI, Tesfaye K, Hoogenboom G, Sonder K. 2014. Modeling the effect of a heat wave on maize production in the USA and its implications on food security in the developing world. Weather and Climate Extremes 5-6:67-77.
https://hdl.handle.net/10568/68175
https://doi.org/10.1016/j.wace.2014.07.002
 
Language en
 
Rights Open Access
 
Source Weather and Climate Extremes