DOI: 10.3354/cr01412
Scopus记录号: 2-s2.0-85020435953
论文题名: Is summer sea surface temperature over the Arctic Ocean connected to winter air temperature over North America?
作者: Ogi M. ; Rysgaard S. ; Barber D.G. ; Nakamura T. ; Taguchi B.
刊名: Climate Research
ISSN: 0936577X
出版年: 2016
卷: 70, 期: 1 起始页码: 19
结束页码: 27
语种: 英语
英文关键词: Arctic Ocean
; Cold winter
; Extreme climate event
; Interannual variation
; North America
; Summer SST
; Winter air temperature
Scopus关键词: air temperature
; annual variation
; anomaly
; atmospheric circulation
; atmospheric general circulation model
; data set
; extreme event
; low temperature
; sea ice
; sea surface temperature
; summer
; winter
; Arctic Ocean
; Barents Sea
; North America
英文摘要: Focusing on the extremely cold winter of 2013-2014 over North America, we used both reanalysis datasets and an atmospheric general circulation model (AGCM) to examine the relationship between changes in the Arctic Ocean during the summer and atmospheric circulations over North America during the subsequent winter. In the reanalysis datasets, air temperatures over North America were extremely cold during the winter of 2013-2014, while summer sea surface temperatures (SST) over the Barents Sea in 2013 were anomalously warm. This relationship is not limited to 2013-2014; we found that the interannual variability of SST over the Barents Sea is significantly correlated with the atmospheric circulations and air temperatures over North America during the winter. Also, positive SST anomalies over the Barents Sea during summer persist through autumn and winter. These results indicate that variations in Barents Sea SST have a memory longer than a season, and hence are important for the interseasonal link from summer to winter, which is likely related to the atmosphere and temperature anomalies in the following winter. AGCM experiments driven by the observed SST and sea ice concentration successfully reproduced the warmer temperature over the Barents Sea from summer to winter. The winter large-scale atmospheric anomalies in the experiments were similar to observed atmospheric anomalies in the winter of 2013-2014. Finally, both our observational analysis and the model experiments suggest that the summer to autumn Barents Sea SST, rather than Arctic sea ice anomalies, may hold a key to predicting the winter atmospheric circulation and the winter air temperature over North America. © Inter-Research 2016. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116361
Appears in Collections: 气候减缓与适应
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Recommended Citation:
Ogi M.,Rysgaard S.,Barber D.G.,et al. Is summer sea surface temperature over the Arctic Ocean connected to winter air temperature over North America?[J]. Climate Research,2016-01-01,70(1)