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

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.

發文機構：Qinghai Provincial Meteorological Observatory Nanjing Joint Institute for Atmospheric Science China Atmospheric Background Reference Observatory Qinghai Provincial Key Laboratory of Disaster Prevention and Mitigation

關鍵詞：Qinghai-TibetPlateauDustweatherPOLLUTIONMeteorologicalcharacteristic

分類號： P44[天文地球—大氣科學及氣象學]