Research Progress of Retrieval Ground-level PM2.5 Concentration Based on AOD Data
WU Jiansheng
WANG Xi
Abstract：The pollutant is on the increase because of the rapid urbanization and the energy consumption in China.Urban air quality researches become the hot spot in the air quality field with more and more common pollutant days.As the PM2.5 concentration is one of the important indicators of the air quality,people pay more attention to the PM2.5.PM2.5 data could be obtained by two methods including ground observation and satellite remote sensing observation.The data acquired by traditional ground observation are accurate but its coverage areas aren't satisfying,while the satellite remote sensing can make up for this flaw.And using satellite data product AOD to retrieve PM2.5 is the most widely applied.This article based on many studies at home and abroad started with all kinds of AOD data,including the model choices for PM2.5 concentration and the model optimization.AOD data of different resolutions will result in distinct retrieval precisions.Besides,there are also obvious differences between linear regression and non-linear regression.The retrieval can be significantly improved by adding the meteorological factors,aerosol vertical profiles,land use information and other factors.Furthermore,the paper's focus and orientation in the future were prospected.And this paper provides a methodological basis for epidemiologic study.
Keywords：satellite remote sensingaerosol optical depthretrievalPM2.5
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 68-76 )