Influence of the subtropical stratosphere on the Antarctic polar vortex during spring 2019

被引：1
作者：
Zuev, Vladimir V. [1 ]
Savelieva, Ekaterina [1 ]
Borovko, Irina, V [2 ]
Krupchatnikov, Vladimir N. [2 ,3 ]
机构：
[1] Russian Acad Sci, Siberian Branch, Inst Monitoring Climat & Ecol Syst, 10-3 Acad Sky Ave, Tomsk 634055, Russia
[2] Russian Acad Sci, Siberian Branch, Inst Computat Math & Math Geophys, 6 Ac Lavrentieva Ave, Novosibirsk 630090, Russia
[3] Novosibirsk State Univ, 1 Pirogova St, Novosibirsk 630090, Russia
来源：
27TH INTERNATIONAL SYMPOSIUM ON ATMOSPHERIC AND OCEAN OPTICS, ATMOSPHERIC PHYSICS | 2021年 / 11916卷
关键词：
Antarctic polar vortex; subtropical stratospheric temperature; polar ozone depletion; eddy heat flux; SOUTHERN-HEMISPHERE; WINTER; DEPLETION;
D O I：
10.1117/12.2599029
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
The stratospheric polar vortex strength in spring determines to a great extent the duration and intensity of ozone depletion in the polar regions. A temperature increase in the lower subtropical stratosphere in spring leads to an increase in the stratospheric equator-to-pole temperature gradient and the subsequent strengthening of the Antarctic polar vortex, accompanied by severe springtime ozone depletion. At the same time, the unusual weakening of the Antarctic polar vortex was observed in the spring of 2019. An abnormal temperature decrease in the lower subtropical stratosphere was recorded in the same time period and probably led to a decrease in the stratospheric equator-to-pole temperature gradient and the subsequent weakening of the polar vortex.
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页数：6
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