Air Quality | Earthdata - NASA

Sources of aerosols include pollution from factories, smoke from fires, dust from dust storms, sea salt, and volcanic ash and smog. Aerosols ... EarthObservationData LANCE:NASANearReal-TimeDataandImagery HazardsandDisasters AirQuality Data Disciplines: Atmosphere Hazards&Disasters AirQualityAshPlumesDroughtDustStormsFiresFloodsSevereStormsShippingSmokePlumesVegetation MoreResources CommonMetadataRepository(CMR)EarthdataSearchGlobalImageryBrowseServices(GIBS)LANCE:Land,AtmosphereNearReal-TimeCapabilityforEOSWorldview AirQuality Accurateearlywarningsofpoorairqualityareusefulbecausetheygivepeopletheoptiontoreducetheirriskofexposuretopoorairbylimitingoutdooractivityatthesetimes.Airqualityforecastersusenearreal-time(NRT)datafromNASA'sLand,AtmosphereNearreal-timeCapabilityforEOS(LANCE)toimprovesomelocalandnationalairqualityforecasts.UserscanvisualizeimageryrelatedtoAirQualityinWorldviewordownloaddatausingthelinksbelow. RegisterforanEarthdataLogintostartdownloadingdata. ReadtheLANCEdisclaimerformoreinformationaboutusingthedata. Learnmore: HealthandAirQualityDataPathfinder AerosolIndex AerosolIndex Aerosolsabsorbandscatterincomingsunlight,whichreducesvisibilityandincreasestheopticaldepth.Aerosolshaveaneffectonhumanhealth,weatherandtheclimate.Sourcesofaerosolsincludepollutionfromfactories,smokefromfires,dustfromduststorms,seasalts,andvolcanicashandsmog.Aerosolscompromisehumanhealthwheninhaledbypeoplewithasthmaorotherrespiratoryillnesses.Aerosolsalsohaveanaffectontheweatherandclimatebycoolingorwarmingtheearth,helpingorpreventingcloudsfromforming. Satellite-derivedAerosolIndexproductsareusefulforidentifyingandtrackingthelong-rangetransportofvolcanicashfromvolcaniceruptions,smokefromwildfiresorbiomassburningeventsanddustfromdesertduststorms,eventrackingovercloudsandareasofsnowandice. Product:Instrument(Platform)andDownloadLink Description BrowseimageryinWorldview OMI(AURA)OMAERUV TheOzoneMonitoringInstrument(OMI)AIindicatesthepresenceofultraviolet(UV)-absorbingparticlesintheair(aerosols)suchasdesertdustandsootparticlesintheatmosphere.Thesensorresolutionis25km,imageryresolutionis2km,andthetemporalresolutionisdaily.L2NearUVAerosolOpticalDepthandSingleScatteringAlbedoSwath13x24km. AerosolIndex UVAerosoIIndex OMPS(SuomiNPP)NMTO3NRT TheOzoneMappingandProfilerSuite(OMPS)AIindicatesthepresenceofUV-absorbingparticlesintheair(aerosols)suchasdesertdustandsootparticlesintheatmosphere.TheunitlessrangeoftheAIisfrom0.00to>=5.00,where5.0indicatesheavyconcentrationsofaerosolsthatcouldreducevisibilityorimpacthumanhealthandthissatisfiestheneedsofmostusers.However,theAIsignalforpyrocumulonimbus(pyroCb)events,whicharebothdenseandhighintheatmosphere,canbemuchlargerthan5.0.Toprovidebetternearreal-timeimageryforthesehighAIevents,thepyroCbproductwithanupperAIlimitof50.0.Thesensorresolutionis50km,imageryresolutionis2km,andthetemporalresolutionisdaily.L2SulfurDioxide(SO2)TotalColumnSwath13x24km AerosolIndex AerosolIndex(Pryrocumulonimbus) AerosolOpticalDepth AerosolOpticalDepth AerosolOpticalDepth(AOD)(orAerosolOpticalThickness)indicatesthelevelatwhichparticlesintheair(aerosols)preventlightfromtravelingthroughtheatmosphere.Aerosolsscatterandabsorbincomingsunlight,whichreducesvisibility.Fromanobserverontheground,anAODoflessthan0.1is“clean”-characteristicofclearbluesky,brightsunandmaximumvisibility.AsAODincreasesto0.5,1.0,andgreaterthan3.0,aerosolsbecomesodensethatsunisobscured.Sourcesofaerosolsincludepollutionfromfactories,smokefromfires,dustfromduststorms,seasalt,andvolcanicashandsmog.Aerosolscompromisehumanhealthwheninhaledbypeople,particularlythosewithasthmaorotherrespiratoryillnesses.Aerosolsalsohaveaneffectontheweatherandclimatebycoolingorwarmingtheearth,helpingorpreventingcloudsfromforming.Sinceaerosolsaredifficulttoidentifywhentheyoccuroverdifferenttypesoflandsurfacesandoceansurfaces,Worldviewprovidesseveraldifferenttypesofimagerylayerstoassistintheidentification. Product:Instrument(Platform)Downloadlink Description BrowseimageryinWorldview MODIS(Terra)MOD04_L2MODIS(Aqua)MYD04_L2 ModerateResolutionImagingSpectroradiometer(MODIS(Terra))L2Aerosol,5-MinSwath10kmdoi:10.5067/MODIS/MOD04_L2.NRT.061MODIS(Aqua)L2Aerosol,5-MinSwath10kmdoi:10.5067/MODIS/MYD04_L2.NRT.061 AerosolOpticalDepth(AOD) AOD3km(landandocean) DeepBlueAerosolAngstromExponent(land) DarkTargetAerosolAngstromExponent(ocean) DeepBlueAOD(land) MergedDT/DBAerosolOpticalDepth(landandocean) AOD3km(landandocean) DeepBlueAerosolAngstromExponent(land) DarkTargetAerosolAngstromExponent(ocean) DeepBlueAOD(land) MergedDT/DBAerosolOpticalDepth(landandocean) MODIS(Terra/Aqua)MCDAODHD MODIS(Aqua)MYDAODHD MODIS(Terra)MODAODHD L3Value-addedAerosolOpticalDepthMODIS(combined)doi:10.5067/MODIS/MCDAODHD.NRT.061 MODIS(Aqua) doi:10.5067/MODIS/MYDAODHD_NRT.061 MODIS(Terra) doi:10.5067/MODIS/MODAODHD.NRT.061 ValueAddedAOD MODIS(Terra/Aqua)MCD19A2N L2GMulti-AngleImplementationofAtmosphericCorrection(MAIAC)LandAerosolOpticalDepthMODIS/Terra+AquaLandAerosolOpticalDepthDailyL2GGlobal1kmSINGrid doi:10.5067/MODIS/MCD19A2N.NRT.006 MAIACAerosolOpticalDepth VIIRS(SuomiNPP)AERDB_L2_VIIRS_SNPP_NRT VIIRS/SNPPDeepBlueAerosolL26-MinSwath6kmdoi:10.5067/VIIRS/AERDB_L2_VIIRS_SNPP_NRT.001 DeepBlueAerosolAngstromExponent CarbonMonoxide CarbonMonoxide CarbonMonoxide(CO)isapoisonous,odorlessandcolorlessgas.COisproducedbyincompletecombustionoffossilfuelsandbiomassburning.Itisoneofthelongest-lived,naturallyoccurringatmosphericcarboncompounds.COisatracegasproducedbymethaneoxidation,fossilfuelconsumption(emittedfromfactoriesandcars)andbiomassburning(fromforestfiresandagriculturalburning).Thesemeasurementsareusefulforanalyzingthedistribution,transport,sourcesandsinksofCOinthetroposphereandcanbeusedtoobservehowitinteractswithlandandoceanbiospheres.COhinderstheatmosphere’snaturalabilitytoriditselfofharmfulpollutants. Product:Instrument,PlatformandDownloadLink Description BrowseimageryinWorldview AIRS(Aqua)AIRS2RET_NRT.006 TheAtmosphericInfraredSounder(AIRS)CarbonMonoxide(CO)TotalColumn(Day/Night)layerindicatestheamountofCarbonMonoxide(CO)inthetotalverticalcolumnprofileoftheatmosphere(fromEarth’ssurfacetotop-of-atmosphere)andismeasuredinpartsperbillionbyvolume(ppbv).Theimageryresolutionis2kmandsensorresolutionis45km.L2standardretrievalproductusingAIRSIRonly COTotalColumn(Day/Night) MLS(Aura)ML2CO_NRT.004 TheMicrowaveLimbSounder(MLS)CarbonMonoxide(CO)MixingRatiolayerat215hPa(hectopascals)indicatescarbonmonoxidelevelsattheverticalatmosphericpressurelevelof215hPa,andismeasuredinpartsperbillionbyvolume(ppbv).L2CarbonMonoxide(CO)MLS/AuraNRTL2COMixingRatio CO(215hPa,Day/Night) MOPITT(Terra)MOP02R_NRT TheMeasurementsofPollutionintheTroposphere(MOPITT)CarbonMonoxide(Level2,Daily,Day/Night,TotalColumn)layershowstheamountofcarbonmonoxide(CO)presentinthetotalverticalcolumnoftheloweratmosphere(troposphere)andismeasuredinmolepersquarecentimeter(mol/cm2)fortheDayandNightoverpasses,innearreal-time(NRT).MOPITTNRTmeasurementsusethermal-infraredradiationat4.7µmtoproduceCOtotalcolumnabundance.MOPITTNRTLevel2COverticalprofilesderivedfromThermalInfraredRadiances. CO(Level2,Daily,Day/Night,TotalColumn) CorrectedReflectanceImagery CorrectedReflectanceImagery MODISandVIIRSCorrectedReflectanceimageryareavailableonlyasnearreal-timeimagery.TheimagerycanbevisualizedinWorldviewandGlobalImageryBrowseServices(GIBS).More: InformationonMODISCorrectedReflectanceImagerylayersincluding CorrectedReflectanceTrueColor(Bands1-4-3), CorrectedReflectance(Bands3-6-7) CorrectedReflectance(Bands7-2-1) InformationonVIIRSCorrectedReflectanceImagerylayersincluding CorrectedReflectanceTrueColor(BandsI1-M4-M3), CorrectedReflectance(BandsM3-I3-M11) CorrectedReflectance(BandsM11-I2-I1) BrowseCorrectedReflectanceimageryinWorldview FormoreonthedifferencebetweenCorrectedReflectanceandSurfaceReflectanceImagery Dust Dust Product:Instrument,PlatformandDownloadLink Description BrowseimageryinWorldview AIRS(Aqua)AIRIBQAP_NRT.005 TheAIRSDustScorescienceparameterisaparameteroftheAIRSLevel1BInfraredqualityassurancesubset(AIRIBQAP_NRT).TheAIRSDustScore(Ocean,Day|Night)layerindicatesthelevelofatmosphericaerosolsintheEarth’satmosphereovertheocean.Thenumericalscaleisaqualitativerepresentationofthepresenceofdustintheatmosphere,anindicationofwherelargeduststormsmayformandtheareasthatmaybeaffected.Pixelswherethedustscoreislessthan360arenotshowninWorldview/GIBS.Theimageryresolutionis2km,sensorresolutionis45kmandthetemporalresolutionisdaily.L1BIRqualityassurancesubset Dustscore(Day/Ocean) Dustscore(Night/Ocean) Fire Fire TheVIIRSandMODISFireandThermalAnomalieslayershowsactivefiredetectionsandthermalanomalies,suchasvolcanoes,andgasflares.Firescanbesetnaturally,suchasbylightning,orbyhumans,whetherintentionallyoraccidentally.Fireisoftenthoughtofasamenaceanddetrimenttolife,butinsomeecosystemsitisnecessarytomaintaintheequilibrium,forexample,someplantsonlyreleaseseedsunderhightemperaturesthatcanonlybeachievedbyfire,firescanalsoclearundergrowthandbrushtohelprestoreforeststogoodhealth,humansusefireinslashandburnagriculture,toclearawaylastyear’scropstubbleandprovidenutrientsforthesoilandtoclearareasforpasture.Thefirelayerisusefulforstudyingthespatialandtemporaldistributionoffire,tolocatepersistenthotspotssuchasvolcanoesandgasflares,tolocatethesourceofairpollutionfromsmokethatmayhaveadversehumanhealthimpacts. Product:Instrument,PlatformandDownloadLink Description BrowseimageryinWorldview MODIS(Aqua)MYD14MODIS(Terra)MOD14 TheMODISFireandThermalAnomaliesproductisavailablefromtheTerra(MOD14)andAqua(MYD14)satellitesaswellasacombinedTerraandAqua(MCD14)satelliteproduct.Thethermalanomaliesarerepresentedasredpoints(approximatecenterofa1kmpixel)inWorldview/GIBS. doi:10.5067/MODIS/MYD14.NRT.006(Aqua) doi:10.5067/MODIS/MOD14.NRT.006(Terra) MODISFiresandThermalAnomalies(Day/Night) VIIRS(SuomiNPP)VNP14IMG_NRT VIIRS(NOAA-20)VNP14IMGTDL_NRT TheVIIRS375mI-bandfiredetectionscomplementstheMODISfiredetections;theybothshowgoodagreementinhotspotdetectionbuttheimprovedspatialresolutionofthe375mdataprovidesagreaterresponseoverfiresofrelativelysmallareasandprovidesimprovedmappingoflargefireperimeters.The375mdataalsohasimprovednighttimeperformance.Consequently,thesedataarewellsuitedforuseinsupportoffiremanagement(e.g.,nearreal-timealertsystems),aswellasotherscienceapplicationsrequiringimprovedfiremappingfidelity.Thethermalanomaliesarerepresentedasredpoints(approximatecenterofa375mpixel).VIIRS/SuomiNPPActiveFiresL2Swath375m VIIRSThermalAnomalies(Day/Night) NitricAcid NitricAcid Nitricacid(HNO3)isaverywatersoluble,acidicgas.
Intheatmosphereitisformedbytheconversionofnitrogenmonoxideintonitrogendioxide,andultimatelyintonitricacid.Itreadilyreactswithatmosphericwatertoproduceacidicprecipitation.Nitricacidalsoreactswithgaseousammoniatoformparticulateoraerosolnitrate,whichinturnisremovedbywetanddrydepositionoftheparticles.Inthecleanbackgroundtroposphere,itsremovalinprecipitationactsasasinkforoddhydrogenandnitrogencompoundsandlimitstheformationofozone. Product:Instrument,PlatformandDownloadLink Description BrowseimageryinWorldview MLS(Aura)ML2HNO3_NRT.004 TheMLSNitricAcid(HNO3)MixingRatioat46hPalayerindicatesnitricacidlevelsattheverticalatmosphericpressurelevelof46hPa,andismeasuredinpartsperbillionbyvolume(ppbv).ItisderivedfromtheMLSNitricAcid(ML2HNO3_NRT)MLS/AuraNRTL2HNO3MixingRatio NitricAcid(46hPa,Day/Night) NitrousOxide NitrousOxide Nitrousoxide(N2O)isproducedalmostentirelyattheEarth'ssurface,about70%frombiologicalprocesses(naturaldecayprocessoflandandocean)andtherestfromhumanactivities(e.g.agriculturalfertilizationandfossil-fuelburning).Sincethe1950'sanincreaseinN2Oofabout0.3%/yearhasbeenseeninthisimportantgreenhousegas. Product:Instrument,PlatformandDownloadLink Description BrowseimageryinWorldview MLS(Aura)ML2N2O_NRT.004 TheMLSNitrousOxide(N2O)MixingRatiolayerat46hPa(hectopascals)indicatesnitrousoxidelevelsattheverticalatmosphericpressurelevelof46hPa,andismeasuredinpartsperbillionbyvolume(ppbv).MLS/AuraNRTL2N2OMixingRatio NitrousOxide(46hPa,Day/Night) Ozone Ozone Ozone(O3)playsimportantrolesinatmosphericchemistryandradiativebalancethroughouttheatmosphere.Chemically,itisapowerfuloxidant.Radiatively,itisanimportantgreenhousegas,particularlyat10to15km.AttheEarth'ssurface,itisatoxiccomponentofairpollutionwithsignificantpublichealthandagriculturalimpacts.Thestratosphericozonelayerfrom15to50kmabsorbsUVradiation,protectinglifeatthesurfaceand,throughheatingbytheabsorbedradiation,largelydeterminesthetemperaturestructureofthemiddleatmosphere. Product:Instrument,PlatformandDownloadLink Description BrowseimageryinWorldview MLS(Aura)ML2O3_NRT.004 TheMLSOzone(O3)MixingRatio46hPa(hectopascals)layerisderivedfromtheMLSOzoneproduct(ML2O3_NRT)availablefromtheMicrowaveLimbSounder(MLS)instrumentontheAurasatellite.Theproductindicatesozonelevelsattheverticalatmosphericpressurelevelof46hPa,andismeasuredinpartsperbillionbyvolume(ppbv).Thesensorresolutionis5km,imageryresolutionis2km,andthetemporalresolutionistwicedaily(dayandnight).MLS/AuraNRTL2O3MixingRatio Ozone(46hPa,Day/Night) OMPS(SuomiNPP)NMTO3NRT OMPSNRTproductscomplementtheozoneNRTdataalreadyavailablefromOMIOMPS-SuomiNPPL2NMOzone(O3)TotalColumnswathorbitalNRT Ozone SulfurDioxide SulfurDioxide SulfurDioxide(SO2),isacolorlessgaswithapungent,suffocatingodorthatiswatersolubletoproducetheacid,H2SO3.SO2isoneoftheUSEnvironmentalProtectionAgency's(EPA)sixmajorregulatedcriteriapollutants(TroposphericOzone[O3],Nitrogendioxide[NO2],Sulfurdioxide,Lead,PM2.5andPM10particulates).Itirritatestheeyes,nose,andlungs.HighconcentrationsofSO2canresultintemporarybreathingimpairment.Itisproducedbycombustionofcoal,fueloil,andgasoline,sincethesefuelscontainsulfurinthecombustion,andintheoxidationofnaturallyoccurringsulfurgases.Itisaprecursortosulfuricacid,whichisamajorconstituentofacidrain.SO2isinjectedintothestratospherebyvolcaniceruptions.SO2alsoisamajorprecursortoPM2.5(ParticulateMatterupto2.5micrometersinsize),whichisasignificanthealthconcern,andamaincontributortopoorvisibility.ThesedataareusedbytheVolcanicAshAdvisoryCentersinadvisoriestoairlinesforoperationaldecisions. Product:Instrument,PlatformandDownloadLink Description BrowseimageryinWorldview AIRS(Aqua)AIRIBRAD_NRT.005 TheAIRSPrataSO2IndexDay/NightlayerindicatesSulfurDioxidecolumnamountsintheatmosphere,measuredinDobsonUnits(DU);itisscienceparameterisaderivedparameterfromtheLevel1BNear-RealTimeInfrared(IR)geolocatedandcalibratedradiances,(AIRIBRAD_NRT).Theimageryresolutionis2kmandsensorresolutionis45km.Thetemporalresolutionisdaily.L1BIRgeolocatedradiances SulfurDioxide(Day/NightPrataAlgorithm) MLS(Aura)ML2SO2_NRT.004 TheMLSSulfurDioxide(SO2)MixingRatiolayerat147hPa(hectopascals)indicatessulfurdioxidelevelsattheverticalatmosphericpressurelevelof147hPa,andismeasuredinpartsperbillionbyvolume(ppbv).Thesensorresolutionis5km,imageryresolutionis2kmandthetemporalresolutionistwicedaily(dayandnight).MLS/AuraNRTL2SO2MixingRatio SulfurDioxide(147hPa,Day/Night) OMI(Aura)OMSO2NRTb TheOMISulfurDioxide(SO2)LowerTropospherelayerindicatesthecolumndensityofsulfurdioxideinthelowertroposphere(correspondingto2.5kmcenterofmassaltitude(CMA))andismeasuredinDobsonUnits(DU).SulfurDioxideandAerosolIndexproductsareusedtomonitorvolcaniccloudsanddetectpre-eruptivevolcanicdegassingglobally.L2SulfurDioxide(SO2)TotalColumnSwath13x24km SO2PlanetaryBoundaryLayer Measuresthetroposphericboundary-layercomponentofthetotalSO2columnmeasuredinDobsonUnits(DU). SO2LowerTroposphere IndicatesthecolumndensityofSO2inthelowertroposphere(correspondingto2.5kmcenterofmassaltitude(CMA)). SO2MiddleTroposphere Indicatesthecolumndensityofsulfurdioxideinthemiddletroposphere(correspondingto7.5kmcenterofmassaltitude(CMA)). SO2UpperTroposphereandStratospherelayer Indicatesthecolumndensityofsulfurdioxideintheuppertroposphereandstratosphere(correspondingto17kmcenterofmassaltitude(CMA))andismeasuredinDobsonUnits(DU). SO2Planetaryboundarylayer LowerTroposphere MiddleTroposphere UpperTroposphereandStratosphere OMPS(SuomiNPP) NMSO2-PCA-L2-NRT OMPSNRTproductscomplementthesulfurdioxideNRTdataalreadyavailablefromOMIOMPS/SuomiNPPPCASO2TotalColumn1-OrbitL2Swath50x50kmNRT SO2Planetaryboundarylayer LowerTroposphere MiddleTroposphere UpperTroposphereandStratosphere VisualizeNRTdatarelatedtoAirQualityinWorldview TheskiesovertheIndo-GangeticPlain-arivervalleythatincludespartsofPakistan,India,Nepal,andBangladesh-areamongthehaziestintheworld.Thosefourcountriesregularlycomeinnearthebottomofannualrankingsforairquality.AsdescribedanarticlefromNASA'sEarthObservatory-SeasonsofIndianAirQuality,airqualityvariesthroughouttheyear. PageLastUpdated:Sep24,2021at10:50AMEDT