DOI: 10.1007/s00382-017-3698-6
Scopus记录号: 2-s2.0-85018242117
论文题名: Seasonal southern hemisphere multi-variable reflection of the southern annular mode in atmosphere and ocean reanalyses
作者: Zhang Z. ; Uotila P. ; Stössel A. ; Vihma T. ; Liu H. ; Zhong Y.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-03-04 起始页码: 1451
结束页码: 1470
语种: 英语
英文关键词: Climate anomaly
; Reanalysis products
; Seasonal variation
; Southern annular mode
; Southern hemisphere
Scopus关键词: air-sea interaction
; Antarctic Oscillation
; atmosphere-ocean coupling
; ice thickness
; multivariate analysis
; oceanic current
; sea ice
; seasonal variation
; Southern Hemisphere
; westerly
; zonal flow
; Amundsen Sea
; Antarctic Peninsula
; Antarctica
; Southern Ocean
; West Antarctica
英文摘要: Variations of southern hemisphere (SH) climate variables are often linked to the southern annular mode (SAM) variability. We examined such linkage by seasons using state-of-the-art atmosphere and ocean/sea-ice reanalyses. The associated SAM related anomaly (SRA) fields of the climate variables, denoting anomalies corresponding to the same variation in SAM, are overall consistent across the reanalyses. Among the atmospheric products, 20CRV2 differs from ERA-interim and CFSR in the sea-level pressure SRAs over the Amundsen Sea, resulting in less warming over the Antarctic Peninsula. Among the ocean reanalyses, ORAP5 and C-GLORS exhibit the largest consistency. The major difference between them and the lower-resolution CFSR and SODA reanalyses is deeper penetration of anomalous meridional currents. Compared to the other ocean reanalyses, CFSR exhibits stronger and spatially more coherent surface-current SRAs, resulting in greater SRAs of sea-ice motion and ice thickness along the ice edges. The SRAs of sensible and total surface heat fluxes are reduced in CFSR due to ocean–atmosphere coupling. Significant sea-ice concentration SRAs are present on the west side of peninsulas along the east Antarctica coast in spring and winter, most notably in ORAP5 and C-GLORS, implying changes in new-ice production and shelf-water formation. Most atmosphere and ocean variables manifest an annular SRA pattern in summer and a non-annular pattern in the other seasons, with a wavenumber-3 structure strongest in autumn and weakest in summer. The wavenumber-3 structure should be related to the zonal wave three pattern of the SH circulation, the relation of which to SAM needs further exploration. © 2017, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109477
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Institute of Oceanography, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China; Finnish Meteorological Institute, P.O. Box 503, Helsinki, 00101, Finland; Department of Oceanography, Texas A&M University, College Station, TX 77843-3146, United States
Recommended Citation:
Zhang Z.,Uotila P.,Stössel A.,et al. Seasonal southern hemisphere multi-variable reflection of the southern annular mode in atmosphere and ocean reanalyses[J]. Climate Dynamics,2018-01-01,50(2018-03-04)