DOI: 10.1029/2018JD028685
Scopus记录号: 2-s2.0-85053377714
论文题名: Combined Influence of the Arctic Oscillation and the Scandinavia Pattern on Spring Surface Air Temperature Variations Over Eurasia
作者: Chen S. ; Wu R. ; Song L. ; Chen W.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 17 起始页码: 9410
结束页码: 9429
语种: 英语
英文关键词: Arctic Oscillation
; Eurasia
; joint impact
; Scandinavia teleconnection pattern
; spring surface air temperature
英文摘要: The present study investigated the joint impacts of the spring Arctic Oscillation (AO) and the Scandinavia (SCAND) teleconnection pattern on spring surface air temperature (SAT) variations over the midhigh latitude Eurasia. It is found that the connection of the spring AO (SCAND) to the first two empirical orthogonal function (EOF) modes of the spring Eurasian SAT variations depends strongly on the phase of the spring SCAND (AO) index. The EOF1 and EOF2 modes display same sign variation and tripole pattern, respectively. In the in-phase AO-SCAND years, the mid-high latitude Eurasia is covered by same sign SAT anomalies, and the spring AO and SCAND indices both have a strong (weak) connection with the EOF1 (EOF2) mode. In the out-of-phase AO-SCAND years, the SAT anomalies over the mid-high latitude Eurasia are featured by a tripole pattern, and the connection of the spring AO and SCAND indices with the EOF1 (EOF2) is insignificant (significant). Differences in the distribution of SAT anomalies between the in-phase and out-of-phase AO-SCAND years are attributed to the constructive and destructive superposition of atmospheric circulation anomalies related to the spring AO and SCAND indices. The observed joint impacts of the spring AO and SCAND on spring Eurasian SAT variations are captured by a historical simulation of the flexible global ocean-atmosphere-land system model, spectral version 2. Analysis indicates that the prediction skill of the spring Eurasian SAT variations related to the first two EOF modes is enhanced when taking both the spring AO and SCAND signals into account. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113211
Appears in Collections: 气候减缓与适应
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作者单位: Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Institute of Urban Meteorology, China Meteorological Administration, Beijing, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Chen S.,Wu R.,Song L.,et al. Combined Influence of the Arctic Oscillation and the Scandinavia Pattern on Spring Surface Air Temperature Variations Over Eurasia[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(17)