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首页> 外文会议>URSI General Assembly and Scientific Symposium >Response of mesosphere and lower thermosphere wind over mid-latitude to the 2013 major sudden stratospheric warming event
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Response of mesosphere and lower thermosphere wind over mid-latitude to the 2013 major sudden stratospheric warming event

机译：中纬度中层和下层热层风对2013年主要平流层突然变暖事件的响应

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摘要

In this paper we report atmospheric wind variations during the 2013 major sudden stratospheric warming (SSW) event at Langfang (39.4°N, 116.7°E). The wind measurements by Langfang meteor radar and UK Meteorological Office (UKMO) wind data are combining used to present their anomalous behaviors response to the event. These winds reveal significant anomalies in the mesosphere and lower thermosphere (MLT) zonal wind over mid-latitude corresponding to the 2013 major warming by comparing to the observations in 2010/2011 when no major warming occurred and could be considered as the normal condition. Results show that the westward wind at 60°N during 2013 major SSW was first observed between 40 km and 53 km and then extended to lower stratosphere and mesosphere. Over mid-latitude, the eastward wind reversed to westward during January 4–15, 2013 at about 80 km with the maximum value of 48.4 m/s on January 11 by UKMO data, while the reversals of MLT daily mean zonal wind persisted from January 8 to 14 observed by meteor radar with the maximum value of 40.2 m/s at 98 km also on January 11. The period of this wind reversal and the date of the maximum wind actually coincide with the mesospheric response at high latitude to the 2013 major warming. These observations and analysis document clearly the impact of a major SSW on the MLT dynamics over the mid-latitude.
机译：在本文中，我们报告了廊坊（39.4°N，116.7°E）发生的2013年重大平流层突然变暖（SSW）事件期间的大气风向变化。廊坊流星雷达和英国气象局（UKMO）的风测量数据结合起来用于表示其对事件的异常行为。与2010/2011年的观测结果相比，这些风揭示了与2013年主要变暖相对应的中纬度和中纬度低层热层（MLT）纬向风的明显异常，当时没有发生重大变暖，可以认为是正常情况。结果表明，在2013年SSW期间，首先观测到在60°N处的西风，位于40 km至53 km之间，然后扩展到低平流层和中层。在中纬度地区，根据UKMO的数据，2013年1月4日至15日，东风逆风向西约80 km，1月11日最大值为48.4 m / s，而MLT日平均纬向风从1月开始持续逆转。同样在1月11日，由流星雷达观测到的98千米处的最大值为40.2 m / s的流星雷达。这种风的逆转周期和最大风的日期实际上与高纬度对2013年大地震的中层响应一致。变暖。这些观察和分析文件清楚地表明了主要SSW对中纬度MLT动力学的影响。

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