Meteorological Characteristics of a Typical Dust Weather Process in the Eastern Qinghai-Tibet Plateau

• 作者: Xiaoning GUO Yu WANG Yuancang MA Quan YANG Yucheng ZHAO
• 来源期刊: 气象与环境研究:英文版
• 学科: 地球科学
• 关键词: Qinghai-Tibet Plateau Dust weather POLLUTION Meteorological characteristic
• 年，卷（期）: 2021,（1）
• 页码范围: 13-18
• 页数: 6页
• 分类号: P44

摘要

Based on the comprehensive ground observation and the remote sensing data of Fengyun-4 satellite of a typical sand-dust weather process in the eastern part of the Qinghai-Tibet Plateau from November 26 to 27,2018,the weather situation,air mass trajectory,meteorological conditions,and pollution characteristics of this process were analyzed.The results show that the floating dust process was caused by the transmission of the northwest cold air flow in the Tarim Desert area,which caused dust and sand mixed with the Qaidam Desert particles to be transported to Xining.The wind field change caused by the difference of ground heat in the eastern plateau was a potential factor for dust transmission,and tropospheric subsidence,temperature inversion conditions,and the decrease in wind speed over Xining Station were the direct factors leading to the daily change of pollutant concentration in this process.