MODIS Active Fire Validation

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1、MODISActiveFireValidationWilfridSchroeder(Univ.ofMaryland,NOAA/NESDIS/STAR,CampSprings,MD)IvanCsiszar(NOAA/NESDIS/STAR,CampSprings,MD)LouisGiglio(ScienceSystemsandApplications,Inc.,Lanham,MD)ChrisJustice(Univ.ofMaryland,CollegePark,MD)MODISScienceTeamMeeting,27thJ

2、an2010LandBreakoutSessionBackgroundSampleSize:18ASTERscenesRegion:SouthAfricaProofofconceptusingfixedthresholdmethodappliedtoASTERband9toderive30mresolutionactivefiremasksMorisetteetal.2005SampleSize:100ASTERscenesRegion:GlobalDevelopmentofrobustactivefiredetectio

3、nalgorithmforASTERGiglioetal.2008SampleSize:131ASTERscenesRegion:NorthernEurasiaDevelopmentofactivefirevalidationprotocolCsiszaretal.2006SampleSize:115ASTERscenesRegion:CONUSValidationofNOAA/NESDISoperationalfiremonitoringsystemincludinganalystdataSchroederetal.20

4、08SampleSize:167ASTER+123LandsatETM+scenesRegion:BrazilianAmazoniaGeneralizationofmoderate-coarseresolutionfiredatavalidation(MODIS+GOES)usinghigherresolutionimagerySchroederetal.2008BackgroundSampleSize:24ASTER+8LandsatETM+scenesRegion:BrazilianAmazoniaAssessment

5、ofshort-termvariationinfirebehavior–implicationstoactivefirevalidationCsiszarandSchroeder2008CurrentStatusSampleSize:~2500ASTERscenesRegion:GlobalStageIIIvalidationofMOD14Schroederetal.(inpreparation)Daytime&nighttimedataDataequallydistributedacrosstheglobeMulti-y

6、earanalysis(2001-2006)ASTERSWIRanomalyMay‘07Omission/commissionerrorsderivedasafunctionofpercenttreecoverTemporalConsistencyofMOD14DetectionPerformanceUsingasubsetofpointscoveringtherangeof20-40%treecoverNostatisticallysignificantdifferenceovertime(i.e.,Dt=0;p<0.

7、01)ASTER(RGB8-3-1)26Jan200300:09:09UTCSEAustraliaASTER(30mFireMask)26Jan200300:09:09UTCSEAustraliaOverallProbabilityofDetectionSummarycurveusingalldatapoints(125KMODISpixelswith>0ASTERfirepixelsincluding16KMOD14firepixels)DaytimeProbabilityofDetectionasaFunctionof

8、PercentageTreeCover****averagevaluecalculatedusinga20x20kmwindowcenteredonthetargetpixelASTER(RGB8-3-1)21June200317:38:35UTCManitoba,CanadaASTER(30mFire