The Analysis for Source Aerosol Optical Properties and Long Range Transportation of Dust Storm in Winter

冬季沙尘暴的源头气溶胶光学特性及远距离输送分析

¹ School of Computer Science, Northwestern Polytechnical University, Xi'an 710129, China
² Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China

Received: 5 November 2019

Abstract

By the combination of ground detection and satellite, the source and development process of strong dust storm in the northwest provinces, including Xinjiang, Gansu, Neimenggu, Ningxia, etc., occurred in November 17 to 18, 2016, is discussed by using the optical properties of aerosols. The ground detection equipments were used to measure the extinction coefficient and optical depth of dust aerosol near the source. The evolution path, formation process and cause of dissipation of dust storm were analyzed by satellite data. The reason why dust storm is not easy to spread to the eastern part of China is preliminarily given.

摘要

通过地面探测设备和卫星数据相结合的方式，利用气溶胶的光学特性研究新疆、甘肃等西北省份2016年11月17日至18日遭受强烈沙尘暴的来源和发展过程。利用地面探测设备对源头附近的沙尘气溶胶的消光系数、光学厚度和能见度等光学参数进行实地测量，利用卫星数据对沙尘暴的产生路径、形成过程和消散原因进行分析，初步给出了冬季沙尘暴不容易扩散至中国东部地区的原因。