The 10-minutes observation data and conventional ground and upper-air observation data for the temperature and precipitation， maximum wind speed and wind direction， minimum visibility， etc.of the Mayitas traffic station and Laofengkou station in Tacheng area of Xinjiang during 2015 -2018 were selected.The 15 easterly wind-blown snow weather cases in the Mayitas wind area were analyzed.It was found that the cold front easterly wind-blown snow mostly occurred， and the easterly wind-blown snow mostly appeared about 1 day after the snowfall ended.The easterly wind-blown weather circulation situation is divided into 2 types （reflow type and front decompression type） and 3 types （Horizontal trough to vertical， low trough east shift and mid-latitude fluctuations）， of which the reflux type of easterly wind-blown snow is the highest proportion.The three-dimensional spatial configuration of the reflow type and front decompression type of easterly wind-blown snow is a backward-inclined structure.The high-altitude is surrounded by high-pressure ridges near the north of Xinjiang， but the reflow type is westward and develops strong， and the front decompression type is slightly biased.The strength of the east is weaker； Although the ground pressure field is “east high and low west”， the Mongolian high pressure of the reflow type wind-blown snow weather is strengthened， and there is obvious positive pressure change； Mongolian high pressure intensity in the front decompression type does not change much.However， the thermal and low pressure in Central Asia is developing， the Maitas wind zone is in the significant decompression zone in front of the front.
Junlan ZHANG
,
Xia YANG
,
Juanjuan WEI
,
Chao MA
,
Chunlei ZENG
. Weather Classification and Circulation Configuration of Easterly Wind-Blown Snow in the Mayitas Wind Area[J]. Plateau Meteorology, 2020
, 39(5)
: 1023
-1032
.
DOI: 10.7522/j.issn.1000-0534.2019.00105
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