CONTENTS

Influence of the Dust Aerosols on Meteorological Fields during Dust Storm

  • ZHOU Xu ,
  • ZHANG Lei ,
  • CHEN Lijing ,
  • GUO Qi
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  • Key Laboratory of Semi-Arid Climate Changes with the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China;Key Laboratory for Cloud Physics, Chinese Academy of Meteorological Sciences, Beijing 100081, China

Received date: 2016-04-06

  Online published: 2017-10-28

Abstract

Dust storm is a normal seen weather phenomenon occuring in the dry-land.During the dust storm process, the key factors of boundary layer will witness a dramatically change.By using the combination of WRF/Chem modelling and parametric scheme given by Y.Shao in 2004, simulated a dust weather process happened on 24-26 April 2010.By controlling whether the dust aerosol is emitted into the atmosphere, compared and analyzed the effect of boundary layer atmospheric factors during the dust storm process.We found that in the night under the dust layer, the dust aerosol has the effection of heating the atmosphere, the maximum value is 1.8 K.This "heating" effect is related to the surface albedo also:The larger of the albedo the stronger of the "heating" effect.In the middle-up layer the dust aerosol have a "cooling" effect, the maximum of temperature decreased value is 3 K.Dust aerosol can raise the boundary layer in the night, 1000 meters to the maximum, opposite effect during the day time is approximate to 700 meters.Dust aerosols results in the horizontal wind speed up, about 1.0 m·s-1.Dust aerosol can also increase the vertical wind speed blow dust aerosols layer, but decrease above the dust layer.

Cite this article

ZHOU Xu , ZHANG Lei , CHEN Lijing , GUO Qi . Influence of the Dust Aerosols on Meteorological Fields during Dust Storm[J]. Plateau Meteorology, 2017 , 36(5) : 1422 -1432 . DOI: 10.7522/j.issn.1000-0534.2016.00110

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