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DOI | 10.1175/JCLI-D-15-0672.1 |
State Dependence of Atmospheric Response to Extratropical North Pacific SST Anomalies | |
Zhou, Guidi1,3; Latif, Mojib1,2; Greatbatch, Richard J.1,2; Park, Wonsun1 | |
2017 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | By performing two sets of high-resolution atmospheric general circulation model (AGCM) experiments, the authors find that the atmospheric response to a sea surface temperature (SST) anomaly in the extra-tropical North Pacific is sensitive to decadal variations of the background SST on which the SST anomaly is superimposed. The response in the first set of experiments, in which the SST anomaly is superimposed on the observed daily SST of 1981-90, strongly differs from the response in the second experiment, in which the same SST anomaly is superimposed on the observed daily SST of 1991-2000. The atmospheric response over the North Pacific during 1981-90 is eddy mediated, equivalent barotropic, and concentrated in the east. In contrast, the atmospheric response during 1991-2000 is weaker and strongest in the west. The results are discussed in terms of Rossby wave dynamics, with the proposed primary wave source switching from baroclinic eddy vorticity forcing over the eastern North Pacific in 1981-90 to mean-flow divergence over the western North Pacific in 1991-2000. The wave source changes are linked to the decadal reduction of daily SST variability over the eastern North Pacific and strengthening of the Oyashio Extension front over the western North Pacific. Thus, both daily and frontal aspects of the background SST variability in determining the atmospheric response to extratropical North Pacific SST anomalies are emphasized by these AGCM experiments. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000391856300005 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; DECADAL CLIMATE VARIABILITY ; HEAT-FLUX ANOMALIES ; ATLANTIC OCEAN ; LATENT ; SIMULATIONS ; STREAM ; WINTER ; SHIFT |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19612 |
专题 | 气候变化 |
作者单位 | 1.GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany; 2.Univ Kiel, Cluster Excellence Future Ocean, Kiel, Germany; 3.Max Planck Inst Meteorol, Hamburg, Germany |
推荐引用方式 GB/T 7714 | Zhou, Guidi,Latif, Mojib,Greatbatch, Richard J.,et al. State Dependence of Atmospheric Response to Extratropical North Pacific SST Anomalies[J]. JOURNAL OF CLIMATE,2017,30(2). |
APA | Zhou, Guidi,Latif, Mojib,Greatbatch, Richard J.,&Park, Wonsun.(2017).State Dependence of Atmospheric Response to Extratropical North Pacific SST Anomalies.JOURNAL OF CLIMATE,30(2). |
MLA | Zhou, Guidi,et al."State Dependence of Atmospheric Response to Extratropical North Pacific SST Anomalies".JOURNAL OF CLIMATE 30.2(2017). |
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