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Song, Chang-Keun
Air Quality Impact Assessment Research Lab.
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Effect of anthropogenic sulphate aerosol in China on the drought in the western-to-central US

Author(s)
Yeh, Sang-WookPark, Rokjin J.Kim, Minjoong J.Jeong, Jaein I.Song, Chang-Keun
Issued Date
2015-09
DOI
10.1038/srep14305
URI
https://scholarworks.unist.ac.kr/handle/201301/20945
Fulltext
http://www.nature.com/articles/srep14305
Citation
SCIENTIFIC REPORTS, v.5, pp.14305
Abstract
In recent decades, droughts have occurred in the western-to-central United States (US), significantly affecting food production, water supplies, ecosystem health, and the propagation of vector-borne diseases. Previous studies have suggested natural sea surface temperature (SST) forcing in the Pacific as the main driver of precipitation deficits in the US. Here, we show that the aerosol forcing in China, which has been known to alter the regional hydrological cycle in East Asia, may also contribute to reducing the precipitation in the western-to-central US through atmospheric teleconnections across the Pacific. Our model experiments show some indications that both the SST forcing and the increase in regional sulphate forcing in China play a similar role in modulating the western-to-central US precipitation, especially its long-term variation. This result indicates that regional air quality regulations in China have important implications for hydrological cycles in East Asia, as well as in the US
Publisher
NATURE PUBLISHING GROUP
ISSN
2045-2322
Keyword
SEA-SURFACE TEMPERATUREASIAN SUMMER MONSOONNORTH-AMERICAPRECIPITATION VARIABILITYPACIFICCLIMATETELECONNECTIONREDUCTION

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