The Circumglobal Transport of Massive African Dust and Its Impacts on the Regional Circulation in Remote Atmosphere
文献类型：期刊论文
| 作者 | Bi, Hongru5; Chen, Siyu5; Zhang, Daizhou4; Wang, Yong6,7; Kang, Litai8; Alam, Khan1,9; Tang, Mingjin2,3 ; Chen, Yu; Zhang, Yue5; Wang, Danfeng5
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| 刊名 | BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
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| 出版日期 | 2024-03-01 |
| 卷号 | 105期号:3页码:e605-e622 |
| 关键词 | Africa Atmospheric circulation Transport Dust or dust storms Radiative forcing |
| ISSN号 | 0003-0007 |
| DOI | 10.1175/BAMS-D-23-0072.1 |
| 英文摘要 | Atmospheric dust from North Africa, the largest and most persistently active dust source over the world, spreads widely in the Northern Hemisphere and plays essential roles in the Earth environment evolution. During 7-24 June 2020, an extremely strong dust event occurred with its westward spreading modulated by the North Atlantic Oscillation (NAO) and its eastward spreading regulated by European blocking, ultimately resulting in the circumglobal transport of African dust. The Mediterranean low pressure linked to the European blocking dipole was the key to facilitating the eastward transport of dust. This record -breaking African dust episode caused a notable diurnal precipitation decrease of 0.98 mm day-1 over northeastern India and a decrease of 1.55 mm day-1 over central North America, which was ascribed to the effect of dust -induced radiative heating on large-scale circulation. It triggered a Rossby wave train and caused anomalous high pressure over northeastern India, which weakened the India summer monsoon and consequently inhibited the occurrence of precipitation. Dust -induced radiative heating also supported the stability in the anomalous warm high over North America, further repressing import of moisture from Atlantic. Ambient moisture and atmospheric instability also presented consistent variation over North America and India characterized as strengthen descending motion and sharply reduced moist convection. This study reports, for the first time, the strong modulation of regional circulation by circumglobally transported African dust, especially in Asia and North America. The new aspects on the unexpected consequences on moisture convection indicate broader roles that the dust may play in the global climate change. |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001188237700001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/77187]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Chen, Siyu |
| 作者单位 | 1.Univ Peshawar, Dept Phys, Peshawar, Pakistan 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Protect & Resources Uti, Guangzhou, Peoples R China 4.Prefectural Univ Kumamoto, Fac Environm & Symbiot Sci, Kumamoto, Japan 5.Lanzhou Univ, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou, Peoples R China 6.Tsinghua Univ, Key Lab Earth Syst Modeling, Minist Educ, Beijing, Peoples R China 7.Tsinghua Univ, Dept Earth Syst Sci, Beijing, Peoples R China 8.Univ Washington, Dept Atmospher Sci, Seattle, WA USA 9.Lanzhou Univ, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bi, Hongru,Chen, Siyu,Zhang, Daizhou,et al. The Circumglobal Transport of Massive African Dust and Its Impacts on the Regional Circulation in Remote Atmosphere[J]. BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY,2024,105(3):e605-e622. |
| APA | Bi, Hongru.,Chen, Siyu.,Zhang, Daizhou.,Wang, Yong.,Kang, Litai.,...&Wang, Danfeng.(2024).The Circumglobal Transport of Massive African Dust and Its Impacts on the Regional Circulation in Remote Atmosphere.BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY,105(3),e605-e622. |
| MLA | Bi, Hongru,et al."The Circumglobal Transport of Massive African Dust and Its Impacts on the Regional Circulation in Remote Atmosphere".BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY 105.3(2024):e605-e622. |
入库方式： OAI收割
来源：广州地球化学研究所
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