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NCEP/NCAR40(,211101)(,100085)(NCEP)(NCAR)40(19581997),VisualFoxProGrADS,,:NCEP/NCAR(NCEP,NMC)(NCAR)19914040(19571996)/1957,,50(19481998)NCEP/NCAR:,(netCDF)(GRIB),ASC,(FORTRANMATLAB),:WGRIBNC,GrADSVisualFoxPro,(GUI)GrADS,,,1NCEP/NCAR,()(CDC),108mm(17)32,215215,T62(19294)::215215;T62(19294):73:17:10009258507006005004003002502001501007050302010hPa;(=01995):;,1(1(1000hPa)17(10hPa));2(117)(117):netCDF,;,2VisualFoxpro(VFP),VFP,VFP,GrADS(GridAnalysisandDisplaySystem),,,:Pentium;Win2dows9xWindowsNT410;Vi2sualFoxpro510;GrADSV117()3,,1:,,VisualFoxpro,GrADS,GrADS,1:(),,,GrADSGrADS,,GrADSGrADSnetCDF,,GrADS,(1ctl)GrADS,,,GIF,GUI,,,,GrADS4(2),,83285,,,,411,,,,,GIF3a,1960121,3b1000hPa2NCEP/NCAR3412,,,,,5NCEP/NCAR40VisualFoxPro,GrADS,,,,,1KalnayE,MKanamitsu,RKistler,etal.TheNCEP/NCAR402yearreanalysisproject.BullAmerMeteorSoc,1996,77(3):437471.2KistlerR,KalnayE,W.Collins,etal.TheNCEP/NCAR502yearreanalysis.BullAmerMeteorSoc,1999.3.NCEP/NCAR40.,1999,2.4,.GrADS.,,1998.8.(43)93285(4),,,4,,;,,,,:(1),(2),1..:,1995.4.2..,1997,8(1).MethodsofForecastingAirQualityatHefeiCityZhuHongfangWangDongyong(AnhuiMeteorologicalObservatory,Hefei230061)AbstractByusingthemethodsofMOSandKalmanfilter,twoforecastingmodelsforHefeisairpol2lutionareestablished.Themodelsprovidethenecessarysupportingtechnologytomakethefore2castofairpollutionatHefeiCity.KeyWords:airpollutionforecastMOSKalmanfilter(39)ADisplaySystemofNCEP/NCARs402yearReanalysisDataYanJun(InstituteofMeteorology,PLAUniversityofScienceandTechnology,Nanjing211101)LiuJianwen(TheAviationMeteorologyInstitute,Beijing100085)AbstractAccordingtothe402year(1958to1997)recordofglobalreanalysisdataofatmosphericfieldsfromNCEP/NCAR(NationalCentersforEnvironmentalPredictionandNationalCenterforAt2mosphericResearch,USA),adisplaysystemwasdevelopedbyapplyingthedatabasesoftwareVi2sualFoxproandthemeteorologicalsoftwarepackageGrADS.Ithasthefunctionofdisplayingkindsoffiguresinagreementwithuserschoiceinarea,timeandmapprojection,andexportingthedatainusualformat.KeyWords:NCEP/NCARreanalysisdatadisplaysystemdatabase34285