Variable influence on the equatorial troposphere associated with SSW using ERA-Interim

被引：11

作者：

Bal, Sourabh ^{[1
,4
]}

Schimanke, Semjon ^{[2
]}

Spangehl, Thomas ^{[3
]}

Cubasch, Ulrich ^{[1
]}

机构：

[1] Free Univ Berlin, Inst Meteorol, Berlin, Germany

[2] Swedish Meteorol & Hydrol Inst, Norrkoping, Sweden

[3] German Weather Serv, Offenbach, Germany

[4] Swami Vivekananda Inst Sci & Technol, Dept Phys, Kolkata, India

来源：

JOURNAL OF EARTH SYSTEM SCIENCE | 2017年 / 126卷 / 02期

关键词：

Sudden stratospheric warming; convective activity; stratospheric vortex split events; STRATOSPHERIC WARMINGS; QBO; VARIABILITY; SIMULATIONS; SUNSPOTS;

D O I：

10.1007/s12040-017-0802-6

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Sudden stratospheric warming (SSW) events are identified to investigate their influence on the equatorial tropospheric climate. Composite analysis of warming events from Era-Interim (1979-2013) record a cooling of the tropical lower stratosphere with corresponding changes in the mean meridional stratospheric circulation. A cooling of the upper troposphere induces enhanced convective activity near the equatorial region of the Southern Hemisphere and suppressed convective activity in the off-equatorial Northern Hemisphere. After selecting vortex splits, the see-saw pattern of convective activity in the troposphere grows prominent and robust.

引用

页数：13

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