全球变暖英文.ppt

GloGlobalWarbalWarmingming 1.1234BackgroundReasonProblemSolution目目录CONTENT2.Theclimatehasbeengettingsteadilywarmerandwarmerinrecentyears.Background 13.TheaverageglobaltemperaturerisessignificantlyafterenteringtheeightiesGlobalwarmingiscoming!4.TherearemanyreasonsoftheTherearemanyreasonsoftheglobalwarming,butitmainlyglobalwarming,butitmainlycausedbyhumanactivitiescausedbyhumanactivitiesReasonReason25.Initialcausesoftemperaturechanges3 34 42 21 1AerosolsandsootAerosolsandsootGreenhousegasesGreenhousegasesVariationsinEarthsorbitVariationsinEarthsorbitSolaractivitySolaractivity6.Fossilfuelburningland-usechangePopulationgrowth1 1GreenhousegasesGreenhousegasesCOCO2 27.In addition to their direct effect by scattering and absorbing solar radiation,aerosols have indirect effects on the Earths radiation budget.2 2AerosolsandsootAerosolsandsoot8.3 3SolaractivitySolaractivityThesunThesun activitiescausevolcanicactivitiescausevolcaniceruption,andproducealargeeruption,andproducealargenumberofashnumberofash9.4 4VariationsinEarthsorbitVariationsinEarthsorbitVariationsinorbitalcyclesmayinitiateaVariationsinorbitalcyclesmayinitiateanewglacialperiodinthefuture,thoughnewglacialperiodinthefuture,thoughthetimingofthisdependsongreenhousethetimingofthisdependsongreenhousegasconcentrationsaswellastheorbitalgasconcentrationsaswellastheorbitalforcing.forcing.10.GlobalwarmingcausesallsortsofGlobalwarmingcausesallsortsofproblemsproblemsProblemProblem311.ExtremeweatherExtremeweatherSealevelriseSealevelriseLong-termeffectsLong-termeffectsEcologicalsystemsEcologicalsystems1 12 23 34 412.ExtremeExtremeweatherweatherProjectionssuggestaprobableincreaseinthefrequencyandProjectionssuggestaprobableincreaseinthefrequencyandseverityofsomeextremeweatherevents,suchasheatwavesseverityofsomeextremeweatherevents,suchasheatwaves，ElninoElnino（厄（厄尔尼尼诺）,drought,floods,thunderstorms,hail,drought,floods,thunderstorms,hail（冰雹）（冰雹）,storm,theheatandduststorms,storm,theheatandduststorms13.Sea LevelRise19thcenturyriseattherateof0.10to0.15per19thcenturyriseattherateof0.10to0.15peronehundredmetersonehundredmetersIce,islands,citydisappearIce,islands,citydisappearBringdisastertothecoastalareasBringdisastertothecoastalareas14.Terrestrial（陆地）ecosystemsthreatencoralreefs,fisheries,protectedspecies,andothernaturalresourcesofvaluetosocietyEffecttheflightofthemigratorybirdsaffectparticularecosystemsreduceddiversityofecosystemsoceanecosystem123EcologicalsystemsEcologicalsystemsAir15.effectseffectsLong-termLong-termAbruptclimatechangearesponsefromtheEarthscrusttherapidreleaseofmethaneandcarbondioxidefrompermafrostinjuryandlossoflifealargerisktoglobalandregionalfoodsecurityEconomicandInfrastructureloss16.LowcarbonlifeLowcarbonlifeSolution 417.MitigationAdaptationClimateengineeringMitigationofclimatereducegreenhousegasemissions,orenhancethecapacityofcarbonsinkstoabsorbGHGsfromtheatmosphereLocaladaptationeffortsEnhancingadaptivecapacityAgriculturalproductionMorespendingonirrigationWeathercontrolDammingglaciallakesGeoengineeringMigrationInsurancesolarradiationmanagementandcarbondioxideremoval.18.谢谢大家大家观看看Thanks For WatchingLOGO19.