DOI: 10.1007/s00382-012-1528-4
Scopus记录号: 2-s2.0-84874359666
论文题名: The summer circulation over the eastern Mediterranean and the Middle East: Influence of the South Asian monsoon
作者: Tyrlis E. ; Lelieveld J. ; Steil B.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 40, 期: 2017-05-06 起始页码: 1103
结束页码: 1123
语种: 英语
英文关键词: Etesians
; Mediterranean
; Middle East
; Monsoon
; Rossby waves
; Subsidence
; Summer circulation
英文摘要: The summer circulation over the eastern Mediterranean and the Middle East (EMME) is dominated by persistent northerly winds (Etesians) whose ventilating effect counteracts the adiabatic warming induced by large scale subsidence. The ERA40 dataset is used to study the vertical distribution of these circulation features, which both appear to be reconciled manifestations of the South Asian monsoon influence. As predicted by past idealized modeling studies, in late spring a westward expanding upper level warm structure and subsidence areas are associated with Rossby waves excited by the monsoon convection. Steep sloping isentropes that develop over the EMME facilitate further subsidence on the western and northern periphery of the warm structure, which is exposed to the midlatitude westerlies. The northerly flow and descent over the eastern Mediterranean have maxima in July that are strikingly synchronous to the monsoon convection over northern India, where the weaker easterly jet favors a stronger Rossby wave response and consequent impact on the EMME circulation. The pronounced EMME topography modifies the monsoon induced structure, firstly, by inducing orographically locked summer anticyclones. These enhance the mid and low level northwesterly flow at their eastern flanks, leading to distinct subsidence maxima over the eastern Mediterranean and Iran. Secondly, topography amplifies the subsidence and the northerly flow over the Aegean, Red Sea, the Iraq-Gulf region and to the east of the Caspian Sea. © 2012 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55048
Appears in Collections: 过去全球变化的重建
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作者单位: Energy, Environment and Water Research Center, The Cyprus Institute, 20 Konstantinou Kavafi Street, 2121 Nicosia, Cyprus; Max Planck Institute for Chemistry, 55020 Mainz, Germany; King Saud University, Riyadh, 11451, Saudi Arabia
Recommended Citation:
Tyrlis E.,Lelieveld J.,Steil B.. The summer circulation over the eastern Mediterranean and the Middle East: Influence of the South Asian monsoon[J]. Climate Dynamics,2013-01-01,40(2017-05-06)