North China Plain threatened by deadly heatwaves due to climate change and irrigation

Suchul Kang and Elfatih A. B. Eltahir ()
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Suchul Kang: Singapore-MIT Alliance for Research and Technology (SMART) Center for Environmental Sensing and Modeling (CENSAM)
Elfatih A. B. Eltahir: Massachusetts Institute of Technology

Nature Communications, 2018, vol. 9, issue 1, 1-9

Abstract: Abstract North China Plain is the heartland of modern China. This fertile plain has experienced vast expansion of irrigated agriculture which cools surface temperature and moistens surface air, but boosts integrated measures of temperature and humidity, and hence enhances intensity of heatwaves. Here, we project based on an ensemble of high-resolution regional climate model simulations that climate change would add significantly to the anthropogenic effects of irrigation, increasing the risk from heatwaves in this region. Under the business-as-usual scenario of greenhouse gas emissions, North China Plain is likely to experience deadly heatwaves with wet-bulb temperature exceeding the threshold defining what Chinese farmers may tolerate while working outdoors. China is currently the largest contributor to the emissions of greenhouse gases, with potentially serious implications to its own population: continuation of the current pattern of global emissions may limit habitability in the most populous region, of the most populous country on Earth.

Date: 2018
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DOI: 10.1038/s41467-018-05252-y

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