DOI: 10.1007/s00382-011-1218-7
Scopus记录号: 2-s2.0-84856273264
论文题名: Interannual variability of Mediterranean evaporation and its relation to regional climate
作者: Zveryaev I.I. ; Hannachi A.A.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 38, 期: 2017-03-04 起始页码: 495
结束页码: 512
语种: 英语
英文关键词: Evaporation
; Interannual climate variability
; Mediterranean Sea
; Regional hydrological cycle
; Seasonality
英文摘要: Gridded monthly evaporation data for 1958-2006 from the Woods Hole Oceanographic Institution data set are used to investigate interannual variability of Mediterranean evaporation during cold and hot seasons and its relation to regional atmospheric dynamics, sea surface temperature and atmospheric elements of the hydrological cycle. The first EOF mode of Mediterranean evaporation, explaining more than 50% of its total variance, is characterized by the monopole pattern both in winter and summer. However, despite structural similarity, the EOF-1 of Mediterranean evaporation is affected by different climate signals in cold and hot seasons. During winter the EOF-1 is associated with the East Atlantic teleconnection pattern. In summer, there is indication of tropical influence on the EOF-1 of Mediterranean evaporation (presumably from Asian monsoon). Both in winter and summer, principal components of EOF-1 demonstrate clear interdecadal signals (with a stronger signature in summer) associated with large sea surface temperature anomalies. The results of a sensitivity analysis suggest that in winter both the meridional wind and the vertical gradient of saturation specific humidity (GSSH) near the sea surface contribute to the interdecadal evaporation signal. In summer, however, it is likely that the signal is more related to GSSH. Our analysis did not reveal significant links between the Mediterranean evaporation and the North Atlantic Oscillation in any season. The EOF-2 of evaporation accounts for 20% (11%) of its total variance in winter (in summer). Both in winter and summer the EOF-2 is characterized by a zonal dipole with opposite variations of evaporation in western and eastern parts of the Mediterranean Sea. This mode is associated presumably with smaller scale (i. e., local) effects of atmospheric dynamics. Seasonality of the leading modes of the Mediterranean evaporation is also clearly seen in the character of their links to atmospheric elements of the regional hydrological cycle. In particular, significant links to precipitation in some regions have been found in winter, but not in summer. © 2011 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55373
Appears in Collections: 过去全球变化的重建
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作者单位: P.P. Shirshov Institute of Oceanology, RAS and Faculty of Geography, Moscow State University, 36, Nakhimovsky Ave., Moscow 117997, Russian Federation; Department of Meteorology, Stockholm University, Stockholm, Sweden
Recommended Citation:
Zveryaev I.I.,Hannachi A.A.. Interannual variability of Mediterranean evaporation and its relation to regional climate[J]. Climate Dynamics,2012-01-01,38(2017-03-04)