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Recent recovery of the Siberian High intensity

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Title
Recent recovery of the Siberian High intensity
Authors
Kim, Baek-Min
Jee-Hoon Jeong
Hans Linderholm
Deliang Chen
Jong-Seong Kug
Kim, Seong-Joong
Tinghai Ou
Subject
Meteorology & Atmospheric Sciences
Keywords
Climate Change; IPCC AR4; Siberian High; Snow Cover; Tree Ring
Issue Date
2011
Publisher
American Geophysical Union
Citation
Kim, Baek-Min, et al. 2011. "Recent recovery of the Siberian High intensity". JOURNAL OF GEOPHYSICAL RESEARCH, 116(D23): 1-9.
Abstract
This study highlights the fast recovery of the wintertime Siberian High intensity (SHI) over the last two decades. The SHI showed a marked weakening trend from the 1970s to 1980s, leading to unprecedented low SHI in the early 1990s according to most observational datasets. This salient declining SHI trend, however, was sharply replaced by a fast recovery over the last two decades. Since the declining SHI trend has been considered as one of the plausible consequences of climate warming, the recent SHI recovery seemingly contradicts the continuous progression of climate warming in the Northern Hemisphere. We suggest that alleviated surface warming and decreased atmospheric stability in the central Siberia region, associated with an increase in Eurasian snow cover, in the recent two decades contributed to this rather unexpected SHI recovery. The prominent SHI change, however, is not reproduced by general circulation 1990s according to most observational datasets. This salient declining SHI trend, however, was sharply replaced by a fast recovery over the last two decades. Since the declining SHI trend has been considered as one of the plausible consequences of climate warming, the recent SHI recovery seemingly contradicts the continuous progression of climate warming in the Northern Hemisphere. We suggest that alleviated surface warming and decreased atmospheric stability in the central Siberia region, associated with an increase in Eurasian snow cover, in the recent two decades contributed to this rather unexpected SHI recovery. The prominent SHI change, however, is not reproduced by general circulation
URI
http://repository.kopri.re.kr/handle/201206/5789
DOI
http://dx.doi.org/10.1029/2011JD015904
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