Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter Monsoon
Variations of the East Asian winter monsoon (EAWM) induced by dust aerosol are studied by using a regional climate model (RegCM4/Dust). Dust coupled and uncoupled experiments are carried out for the past decade (2000–2009). The coupled RegCM4 captures three centers of dust mixing ratio (DMR) located...
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Wiley
2015-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2015/142617 |
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| author | Hui Sun Xiaodong Liu |
| author_facet | Hui Sun Xiaodong Liu |
| author_sort | Hui Sun |
| collection | DOAJ |
| description | Variations of the East Asian winter monsoon (EAWM) induced by dust aerosol are studied by using a regional climate model (RegCM4/Dust). Dust coupled and uncoupled experiments are carried out for the past decade (2000–2009). The coupled RegCM4 captures three centers of dust mixing ratio (DMR) located in the Taklamakan Desert, western Inner Mongolia, and northern Xinjiang, respectively, with maximum values greater than 500 µg kg−1 in winter. The surface total radiation change induced by dust is negative, and its central value of −8 W m−2 results in surface temperature cooling by 1.5°C in winter. Dust induced radiation change at the top of the atmosphere (TOA) is also negative in Northern China, except over the Tibetan Plateau (TP), and up to −5 W m−2 in Central China. Dust cooling effects increase the sea level pressure (SLP) gradient between land and ocean, the cold surge frequency, and the East Asian jet stream (EAJ) intensity and then enhance the EAWM. The dry and cold wind pervade most areas of East Asia, suppressing large-scale precipitation and eventually leading to a rainfall decrease of about 10–30% in Northern China and the middle Yangtze River Valley. |
| format | Article |
| id | doaj-art-d0e215d148bc4da98d99bd4eec65be49 |
| institution | DOAJ |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
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| series | Advances in Meteorology |
| spelling | doaj-art-d0e215d148bc4da98d99bd4eec65be492025-08-20T03:19:37ZengWileyAdvances in Meteorology1687-93091687-93172015-01-01201510.1155/2015/142617142617Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter MonsoonHui Sun0Xiaodong Liu1SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, ChinaSKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, ChinaVariations of the East Asian winter monsoon (EAWM) induced by dust aerosol are studied by using a regional climate model (RegCM4/Dust). Dust coupled and uncoupled experiments are carried out for the past decade (2000–2009). The coupled RegCM4 captures three centers of dust mixing ratio (DMR) located in the Taklamakan Desert, western Inner Mongolia, and northern Xinjiang, respectively, with maximum values greater than 500 µg kg−1 in winter. The surface total radiation change induced by dust is negative, and its central value of −8 W m−2 results in surface temperature cooling by 1.5°C in winter. Dust induced radiation change at the top of the atmosphere (TOA) is also negative in Northern China, except over the Tibetan Plateau (TP), and up to −5 W m−2 in Central China. Dust cooling effects increase the sea level pressure (SLP) gradient between land and ocean, the cold surge frequency, and the East Asian jet stream (EAJ) intensity and then enhance the EAWM. The dry and cold wind pervade most areas of East Asia, suppressing large-scale precipitation and eventually leading to a rainfall decrease of about 10–30% in Northern China and the middle Yangtze River Valley.http://dx.doi.org/10.1155/2015/142617 |
| spellingShingle | Hui Sun Xiaodong Liu Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter Monsoon Advances in Meteorology |
| title | Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter Monsoon |
| title_full | Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter Monsoon |
| title_fullStr | Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter Monsoon |
| title_full_unstemmed | Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter Monsoon |
| title_short | Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter Monsoon |
| title_sort | numerical simulation of the direct radiative effects of dust aerosol on the east asian winter monsoon |
| url | http://dx.doi.org/10.1155/2015/142617 |
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