极地气团
- 网络polar air mass;Polar,P
极地气团-
中亚干旱区是三大气候系统（西风带、东亚季风和极地气团）交汇衔接的区域，具有敏感的气候响应，因此是全球气候变化研究的热点区域之一。
Arid Central Asia is one of the most sensitive area response to climate change because it is a converge area of three main climatic systems ( westerlies , East Asia monsoon and polar airmass ) .
-
英国气象服务的高级气象学家JimDale表示这场苹果雨很有可能是因为回流的极地海洋气团造成的。
Jim Dale , senior meteorologist from British Weather Services , said the event was probably caused by returning polar maritime air .