Influence of Central Siberian Snow-Albedo Feedback on the Spring East Asian Dust Cycle and Connection With the Preceding Winter Arctic Oscillation
文献类型：期刊论文
| 作者 | Liu, Heng2,3; Liu, Xiaodong2,3,4; Dong, Buwen1 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
 |
| 出版日期 | 2018-12-16 |
| 卷号 | 123期号:23页码:13368-13385 |
| 关键词 | East Asia dust cycle snow-albedo feedback cloud-albedo feedback Arctic Oscillation |
| ISSN号 | 2169-897X |
| DOI | 10.1029/2018JD029385 |
| 通讯作者 | Liu, Xiaodong(liuxd@loess.llqg.ac.cn) |
| 英文摘要 | The Asian dust cycle has significant effects on the climate and environment, while its spatiotemporal variability and change mechanisms are not yet completely understood. Reanalysis data from the Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA2), data set are used to explore the spatiotemporal distribution of the East Asian dust cycle and possible reasons for the interannual variations. Based on the empirical orthogonal function analysis, the dominant mode of dust emissions from the East Asian deserts in the dust season (spring) shows that the Gobi Desert contributes most of the interannual variance of dust emissions in East Asia. The patterns of the regional circulation, temperature, and radiation are analyzed by regressing these variables against the principal component time series of the first empirical orthogonal function mode. The results show that the enhanced dust emissions are associated with a cyclonic circulation anomaly and cooling in the lower and middle troposphere over Central Siberia. The cooling is attributed to local snow-albedo and cloud-albedo feedbacks. The surface cooling is conducive to maintain the snow cover, whereas the cooling in the middle troposphere is associated with the increase of the relative humidity and cloud cover. The increased snow and cloud cover reflect more shortwave radiation, tending to maintain or amplify the surface cooling. It is also found that the negative phase of the Arctic Oscillation in winter initiates the surface cooling in the next spring and results in positive snow-albedo and cloud feedbacks in Central Siberia, eventually enhancing the East Asian dust cycle. |
| WOS关键词 | SAHARAN AIR LAYER ; TIBETAN PLATEAU ; COVER VARIABILITY ; STORM FREQUENCY ; CLIMATE-CHANGE ; PART II ; EMISSION ; PRECIPITATION ; REANALYSIS ; VEGETATION |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDA20070103] ; National Key Research and Development Program of China[2016YFA0601904] ; National Natural Science Foundation of China[41690115] ; National Natural Science Foundation of China[41572150] ; U.K. National Centre for Atmospheric Science-Climate (NCAS-Climate) at the University of Reading |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000455285500019 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | Strategic Priority Research Program of Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; U.K. National Centre for Atmospheric Science-Climate (NCAS-Climate) at the University of Reading |
| 源URL | [http://ir.ieecas.cn/handle/361006/14429]  |
| 专题 | 地球环境研究所_古环境研究室 |
| 通讯作者 | Liu, Xiaodong |
| 作者单位 | 1.Univ Reading, Natl Ctr Atmospher Sci, Reading, Berks, England 2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Heng,Liu, Xiaodong,Dong, Buwen. Influence of Central Siberian Snow-Albedo Feedback on the Spring East Asian Dust Cycle and Connection With the Preceding Winter Arctic Oscillation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(23):13368-13385. |
| APA | Liu, Heng,Liu, Xiaodong,&Dong, Buwen.(2018).Influence of Central Siberian Snow-Albedo Feedback on the Spring East Asian Dust Cycle and Connection With the Preceding Winter Arctic Oscillation.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(23),13368-13385. |
| MLA | Liu, Heng,et al."Influence of Central Siberian Snow-Albedo Feedback on the Spring East Asian Dust Cycle and Connection With the Preceding Winter Arctic Oscillation".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.23(2018):13368-13385. |
入库方式： OAI收割
来源：地球环境研究所
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