Issue |
E3S Web Conf.
Volume 272, 2021
2021 International Conference on Environmental Pollution and Governance (ICEPG 2021)
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Article Number | 01004 | |
Number of page(s) | 4 | |
Section | Environmental Pollution and Pollution Monitoring and Control Technology | |
DOI | https://doi.org/10.1051/e3sconf/202127201004 | |
Published online | 14 June 2021 |
Study on sandstorm in the western section of Hexi Corridor of 2020
Jiuquan Meteorological Bureau in Gansu Province, meteorological observatory, 39 Century Avenue in Jiuquan City, china
* Corresponding author: Haiyan Wang, 1988, mailbox:wang1012yan@126.com
A diagnostic analysis of the dust storm weather occurring in the western part of the Hexi Corridor from 27-30 June 2020 was carried out using Jiuquan city’s live data, as well as ECMWF numerical forecasts, and the NCEP reanalysis information was used to draw a theta dust storm model based on the routing principle. The results show that: 1.In the early stage of sandstorm, there was no precipitation in Suzhou and Jinta counties in March and April, which resulted in dry surface and thickened soil layer. These factors created favorable conditions for the occurrence of dust weather. 2.Development of unstable trough eastward in front of the ridge of Mountain Ural at 500 hPa, The cold high pressure is continuously strengthened in the process of moving, which is the large-scale system leading to the sandstorm. Thermal depression in front of ground cold front is the main cause for the outbreak of the severe sandstorm. 3.The beginning and ending time of the sandstorm can be accurately predicted by the simulation chart of sandstorm forecast, which has a good indication significance for the sandstorm forecast in the Hexi area.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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