DOI: 10.1175/JCLI-D-17-0463.1
Scopus记录号: 2-s2.0-85049755736
论文题名: Polarized response of East Asian winter temperature extremes in the Era of arctic warming
作者: Ma S. ; Zhu C. ; Liu B. ; Zhou T. ; Ding Y. ; Orsolini Y.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 14 起始页码: 5543
结束页码: 5557
语种: 英语
英文关键词: Asia
; Atmospheric circulation
; Climate change
; Climate variability
; Temperature
; Trends
Scopus关键词: Climate change
; Global warming
; Temperature
; Asia
; Atmospheric circulation
; Climate variability
; Standard deviation
; Surface air temperatures
; Temperature extremes
; Thermodynamic effect
; Trends
; Atmospheric temperature
; air temperature
; atmospheric circulation
; climate change
; climate variation
; cold air
; extreme event
; global warming
; trend analysis
; winter
; Arctic
; Asia
英文摘要: It has been argued that fewer cold extremes will be expected to occur over most midlatitude areas, because of anthropogenic-induced global warming. However, East Asia repeatedly suffered from unexpected cold spells during the winter of 2015/16, and the low surface air temperature (SAT) during 21-25 January 2016 broke the previous calendar record from 1961.Wehypothesize that cold extremes such as these occur because of Arctic amplification (AA) of global warming. To test this hypothesis, we analyzed the changes of SAT variability in the winter season over East Asia. Our results show that the SAT variability (measured by the standard deviation of the winter season daily mean SAT) over East Asia has significantly increased in the era of AA during 1988/89-2015/16 and exhibits a polarization between warm and cold extremes, popularly dubbed as ''weather whiplash.'' This phenomenon is driven by both the thermodynamic effects of global warming and the dynamic effects of AA. Global warming favors a rising SAT and more frequent warm extremes. TheAAphenomenon strengthens the wavy components of midlatitude circulation, leading to more frequent blockings over the Ural region and a stronger Siberian high in north Asia. This dynamic effect ofAA enhances the intrusion of cold air from Siberia into East Asia and causes cold extremes. Because there is a comparable increase of frequency of both warm and cold extremes, the SAT variability significantly increases in unison with AA, but little change is observed in the seasonal mean SAT of East Asia. This implies increased risks of both cold and warm extremes over East Asia exist even during global warming. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111491
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Severe Weather, Beijing, China; Institute of Climate System, Chinese Academy of Meteorological Sciences, Beijing, China; LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; National Climate Center, China Meteorological Administration, Beijing, China; Norwegian Institute for Air Research (NILU), Kjeller, Norway
Recommended Citation:
Ma S.,Zhu C.,Liu B.,et al. Polarized response of East Asian winter temperature extremes in the Era of arctic warming[J]. Journal of Climate,2018-01-01,31(14)