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Université du Sud-Ouest (2019)

The Spatial and Temporal Characteristics of Atmospheric Aerosol and Its Environmental Effects over the Belt and Road

雷茜;

Titre : The Spatial and Temporal Characteristics of Atmospheric Aerosol and Its Environmental Effects over the Belt and Road

Auteur : 雷茜;

Grade : Master’s Theses 2019

Université : Université du Sud-Ouest

Résumé partiel
In recent years,the problem of air pollution has become increasingly prominent.Aerosol has become the main factor in the study of air pollution.Although aerosol is relatively low in the atmosphere,as an important part of the earth-atmosphere-ocean system,it has an important impact on the climate,environment and human health.The Belt and Road is the most severe and concentrated aerosol pollution area in the world.Therefore,it is of great significance to study and analyze the temporal and spatial variation characteristics of aerosol and its environmental effects in the region,not only to fully grasp the regional distribution and changes of air pollution,but also to provide some theoretical basis for the sustainable development of atmospheric environment.Based on MODIS,OMI and TRMM multi-source Satellite remote sensing data,this paper makes a comprehensive analysis of the temporal and spatial variation characteristics of aerosol and its environmental effects over the Belt and Road by means of remote sensing,geography and statistics.Firstly,Aerosol Optical Depth(AOD),Angstrom Exponent ?(AE)and UV Aerosol Index(UVAI)were used to analyze the temporal and spatial distribution characteristics of aerosol in the Belt and Road and the typical high pollution area.Then,it discusses the impact of aerosols on atmospheric environment based on Cloud Fraction(CF),Cloud Optical Depth(COD),Cloud Effective Particle Radius Liquid or Ice(CERL/ CERI),Cloud Top Temperature(CTT),Cloud Top Pressure(CTP)and precipitation data.Finally,the Arabian Sea as a typical sea area is study to explores the impact of aerosols on the marine environment combined with chlorophyll data(Chl-a).The main conclusions are as follows :(1)The distribution of AOD over the Belt and Road from 2003 to 2017 are as follows : the area of high AOD over land is mainly distributed in areas where mostly desert dust sources and concentrated of human activities,including eastern China,Xinjiang,northern India Peninsula,central and western Africa,and Arabian Peninsula.The area of high AOD over sea is located in the coastal area near the eastern part of China,the Arabian Sea,the Bay of Bengal,and the west coast of Africa.Moreover,the area of high AOD over sea is significantly affected by land sources.

Mots clés : the Belt and Road; atmospheric aerosol; spatial and temporal distribution; environmental effects;

Présentation (CNKI)

Page publiée le 23 mai 2020