DOI: 10.1175/JCLI-D-13-00189.1
Scopus记录号: 2-s2.0-84893180978
论文题名: Observed atmospheric response to cold season sea ice variability in the arctic
作者: Frankignoul C. ; Sennéchael N. ; Cauchy P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 3 起始页码: 1243
结束页码: 1254
语种: 英语
Scopus关键词: Arctic sea ice
; Atmospheric response
; Maximum covariance analysis
; North Atlantic oscillations
; Northern Hemispheres
; Sea level pressure
; Shorter delays
; Statistical significance
; Atmospheric pressure
; Sea ice
; Sea level
; Climate change
; air-sea interaction
; covariance analysis
; Northern Hemisphere
; sea ice
; sea level pressure
; sea surface temperature
; temperature anomaly
; Arctic Ocean
; Atlantic Ocean
; Atlantic Ocean (North)
; Barents Sea
; Greenland Sea
; Labrador Sea
; Norwegian Sea
; Pacific Ocean
; Pacific Ocean (North)
; Sea of Okhotsk
英文摘要: The relation between weekly Arctic sea ice concentrations (SICs) from December to April and sea level pressure (SLP) during 1979-2007 is investigated using maximum covariance analysis (MCA). In the North Atlantic sector, the interaction between the North Atlantic Oscillation (NAO) and a SIC seesaw between the Labrador Sea and the Greenland-Barents Sea dominates. The NAO drives the seesaw and in return the seesaw precedes a midwinter/spring NAO-like signal of the opposite polarity but with a strengthened northern lobe, thus acting as a negative feedback, with maximum squared covariance at a lag of 6 weeks. Statistical significance decreases when SLP is considered in the whole Northern Hemisphere but it increases when North Pacific SIC is included in the analysis. The maximum squared covariance then occurs after 8 weeks, resembling a combination of the NAOresponse to the Atlantic SIC seesaw and the Aleutian-Icelandic low seesaw-like response to in-phase SIC changes in the Bering and Okhotsk Seas, which is found to lag the North Pacific SIC. Adding SST anomalies to the SIC anomalies in the MCA leads to a loss of significance when the MCA is limited to the North Atlantic sector and a slight degradation in the Pacific and hemispheric cases, suggesting that SIC is the driver of the midwinter/spring atmospheric signal. However, North Pacific cold season SST anomalies also precede a NAO/Arctic Oscillation (AO)-like SLP signal after a shorter delay of 3-4 weeks. © 2014 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50957
Appears in Collections: 气候变化事实与影响
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作者单位: Locean, Université Pierre et Marie Curie, Paris, France
Recommended Citation:
Frankignoul C.,Sennéchael N.,Cauchy P.. Observed atmospheric response to cold season sea ice variability in the arctic[J]. Journal of Climate,2014-01-01,27(3)