DOI: 10.1002/2016JD026296
论文题名: Dual effects of the winter monsoon on haze-fog variations in eastern China
作者: Liu Q. ; Sheng L. ; Cao Z. ; Diao Y. ; Wang W. ; Zhou Y.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2017
卷: 122, 期: 11 起始页码: 5857
结束页码: 5869
语种: 英语
英文关键词: cold wave
; haze-fog
; Siberian High
; subseasonal
; winter monsoon
英文摘要: Previous studies have revealed a negative correlation between the East Asian winter monsoon and wintertime haze-fog events in China. The winter monsoon reduces haze-fog by advecting away aerosol particles and supplying clean air through cold waves. However, it is found that the frequency of haze-fog events on subseasonal time scales displays no correlation with typical winter monsoon indices. The results show that the accumulating and maintaining effects of calm weather related to the Siberian High, which is also a part of the monsoon circulation system, are equally important for the development of haze-fog events during winter. Correlation analysis indicates that subseasonal variations in haze-fog are closely related to the intensity of the Siberian High (r = 0.49). The Siberian High may increase the occurrence of haze-fog events by reducing the near surface wind speed and enhancing the stratification stability. To quantify the contribution of these diverse effects of the winter monsoon on the variations in haze-fog events, we analyzed haze-fog events during periods of cold wave activity and calm weather separately and contrasted the relative contributions of these two effects on different time scales. On the subseasonal scale, the effect of the Siberian High was 2.0 times that of cold waves; on the interannual scale, the effect of cold waves was 2.4 times that of the Siberian High. This study reveals the dual effects of the East Asian winter monsoon on wintertime haze-fog variations in eastern China and provides a more comprehensive understanding of the relationship between the monsoon and haze-fog events. ©2017. American Geophysical Union. All Rights Reserved. 资助项目: 41276009
; 41505013
; 41675146
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62657
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
There are no files associated with this item.
作者单位: College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao, China; Physical Oceanography Laboratory, Ocean University of China, Qingdao, China; Key Laboratory of Ocean-Atmosphere Interaction and Climate of Shandong Province, Qingdao, China
Recommended Citation:
Liu Q.,Sheng L.,Cao Z.,et al. Dual effects of the winter monsoon on haze-fog variations in eastern China[J]. Journal of Geophysical Research: Atmospheres,2017-01-01,122(11)