京津冀地区pm2.5浓度的遥感反演方法研究

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1、市为高值城市。(4)考虑地形起伏对气溶胶分布的影响，发现地形地貌对气溶胶光学厚度的分布有很大的影响，且呈明显负相关。地势越高，该地区气溶胶光学厚度值越低；地势较为平坦的地区气溶胶光学厚度值相对较高。关键词：MODIS气溶胶光学厚度PM2．5京津冀地区万方数据AbstractInthiseraoffasteconomicdevelopment，thecityscaleexpandsrapidly．Atthesametime，urbanairpollutionbecomesseriously,whichcausedbyvarioushumanfactors，such

2、asurbantrafficpollution，engineeringconstruction，industrialgases，naturalecologicaldestructionandSOon．Aatmosphericpollutionproblembringsunprecedentedchallengestotheurbanairquality．InmostareasinChina，thefineparticulatematterPM2．5hasbecometheprimarypollutant．Comprehensiveandeffectivemast

3、erofdistributionandchangingrulesofairpollutionisparticularlyimportanttourbanenvironmentalpreventionandtreatment．China’Sterritoryisvast，butthegeneralbusinessofenvironmentmonitoringreliesongroundroutinemonitoring．Thegroundmonitoringsitesaremainlydistributedintheregionofthelargemediumsi

4、zedcities．Airqualitymonitoringisstillatlowlevel．Comparedwiththegroundmonitoringstations，Satelliteremotesensingmonitoringhasthecharacteristicsoffast，macro，dynamicandeconomic．Ithasobviousadvantagesofspacecontinuityinthedynamicairpollutionmonitoring．Therefore，satelliteremotesensingisone

5、oftheimportanttechnicalmethodsinairpollutionmonitoring，forurbanandregionalenvironmentalairqualitymonitoringandcontr01．ThecorrelationbetweenthemassconcentrationofatmosphericPM2．5andtheMODISaerosolopticaldepthisdiscussed．Satelliteremotesensingestimationmodelisproposedtoderivetheannuala

6、ndseasonalPM2．5massconcentration．Meteorologicalfactorsareappliedtomodifythemodelandimprovetheaccuracyofthemodel．BasedontheMODISAODproductsandgroundPM2．5massconcentrationdata，itisanalyzedthatPM2．5massconcentrationchangesanddistributespatiallyinBeijing—Tianjin—Hebeiregion．Themainresear

7、chcontentsandresultsareasfollows：(1)AdoptingMODISAODdataandPM2．5massconcentrationdata，theregressionmodelisestablished．ItshowsthatthecorrelationbetweenAODandPM2．5valuecoefficientisnothigh，SOitCan’tdirectlybeusedtoestimatethesurfacequalityofPM2．5concen仃ations．Thenusemodelingdatatomakef

8、ittinganalys