输入型沙尘21日晚间入川

Core Viewpoint - The article reports on the movement of a dust storm originating from Inner Mongolia and Qinghai, which is affecting air quality in several regions, including Gansu, Inner Mongolia, and Ningxia, with a forecast for increased PM10 pollution levels in parts of Sichuan province [1] Group 1: Environmental Impact - A dust storm is being pushed southward by cold air, leading to severe PM10 pollution in Gansu, Inner Mongolia, and Ningxia [1] - The dust front has reached Pingliang in Gansu, indicating the advancement of the dust storm [1] - The air quality in northeastern Sichuan cities is expected to deteriorate, with potential for light to moderate pollution levels due to rising PM10 concentrations [1] Group 2: Forecast and Monitoring - From the night of February 21, the dust is expected to continue moving eastward into Sichuan, particularly affecting cities in the northern and eastern parts of the basin [1] - Rainfall is anticipated to begin on February 22, which will help settle the dust and improve air quality across the Sichuan basin [1] - The Sichuan Provincial Ecological Environment Monitoring Station will continue to monitor and analyze the situation [1]