Gaoyuan qixiang (Feb 2024)

Analysis of Water Vapor Characteristics During Heavy Snow in Different Warm Regions of Northern Xinjiang

  • Xiaocui ZHUANG,
  • Lijuan CHEN,
  • Boyuan LI,
  • Yunlin MIAO

DOI
https://doi.org/10.7522/j.issn.1000-0534.2023.00041
Journal volume & issue
Vol. 43, no. 1
pp. 141 – 155

Abstract

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This thesis analyzed the data with NCEP/NCAR method， took HYSPLIT （Lagrangian forward trajectory） method to simulate water vapor characteristics of 27 winter snowstorms in northern Xinjiang from 1980 to 2020， and also analyzed the source-sink relationship of water vapor in different regions and its contribution to blizzard.The results show that the main 500 hPa water vapor source is from Greenland， the Atlantic Ocean and its coast， the Mediterranean Sea， as well as the Black Sea and its vicinity.The water vapor source contributing the most to the blizzard in Altay region is from the Atlantic Ocean and its coastal area， the water vapor source contributing the most to the blizzard in Ta'e Basin is from the Mediterranean Sea， the Black Sea and its vicinity， and the losses along the way are great.700 hPa water vapor source is mainly from northern Europe， the Atlantic Ocean and its vicinity， the Mediterranean Sea， as wll as the Black Sea and its vicinity.The water vapor source contributing the most to the blizzard in Altay is from the Mediterranean Sea， the Black Sea and its vicinity， and the greatest losses are in and around the Mediterranean Sea and the Black Sea； the water vapor source contributing the most to the Ta'e basin is from northern Europe， and the greatest losses are in the Atlantic Ocean and its coasts.850 hPa water vapor source is mainly from Central Asia the Mediterranean Sea， the Black Sea and its vicinity， the former contributed the most to blizzard.After reaching the blizzard area， the water vapor increases.The water vapor in each source reaches the key lizzard areas with the westerly air flow， mainly from the west （southwest） and northwest， and the former path is dominant； The source and path of water vapor in Altay area of lower troposphere are more complicated than that in Ta'e Basin.Based on the above analysis， the contribution model of water vapor source and path of snowstorm in warm area was constructed， and the water vapor contribution of each layer in Altay area and Ta'e Basin was described in detail.

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