气候变化领域集成服务门户(CCPortal): Role of Extratropical Wintertime Cyclones in Regulating the Variations of Baffin Bay Sea Ice Export

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DOI	10.1029/2020JD033616
	Role of Extratropical Wintertime Cyclones in Regulating the Variations of Baffin Bay Sea Ice Export
	Liang Y.; Bi H.; Wang Y.; Huang H.; Zhang Z.; Huang J.; Liu Y.
发表日期	2021
ISSN	2169897X
卷号	126 期号:5
英文摘要	A cyclone is an intensive synoptic activity that occurs frequently over Baffin Bay. By modifying the large-scale distribution pattern of sea level pressure, a passing cyclone can serve as an important regulator of sea ice outflow via the Davis Strait. We obtain a nearly 40-year-long record (1979/1980–2017/2018) of the sea ice area flux (SIAF) through the Davis Strait and Arctic cyclone activities in winter. A case study and statistical results indicate that the sea ice concentration and motion fields can be greatly altered by the occurrence of cyclones, thereby contributing to changes in sea ice export. Moreover, the effects of cyclones on sea ice export in Baffin Bay are dependent on the spatial distribution pattern of the storms. In terms of the cyclone center count and intensity, the key regions with significant impacts on sea ice export out of Baffin Bay are identified, one around Baffin Island (80°W–60°W, 60°N–70°N) and the other over the southern Labrador Peninsula (70°W–50°W, 40°N–60°N). A robust correlation exists between the winter-accumulated SIAF via the Davis Strait and the average winter cyclone intensity (center count) in the critical regions with R = −0.57 (+0.49), affirming the vital role of cyclone activity in modulating the interannual variability of sea ice export in Baffin Bay. © 2021. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185441
作者单位	Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; University of Chinese Academy of Sciences, Beijing, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China; College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao, China
推荐引用方式 GB/T 7714	Liang Y.,Bi H.,Wang Y.,et al. Role of Extratropical Wintertime Cyclones in Regulating the Variations of Baffin Bay Sea Ice Export[J],2021,126(5).
APA	Liang Y..,Bi H..,Wang Y..,Huang H..,Zhang Z..,...&Liu Y..(2021).Role of Extratropical Wintertime Cyclones in Regulating the Variations of Baffin Bay Sea Ice Export.Journal of Geophysical Research: Atmospheres,126(5).
MLA	Liang Y.,et al."Role of Extratropical Wintertime Cyclones in Regulating the Variations of Baffin Bay Sea Ice Export".Journal of Geophysical Research: Atmospheres 126.5(2021).