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GlobalWarming1234BackgroundReasonProblemSolution目录CONTENTTheclimatehasbeengettingsteadilywarmerandwarmerinrecentyears.Background1TheaverageglobaltemperaturerisessignificantlyafterenteringtheeightiesGlobalwarmingiscoming!!!!Therearemanyreasonsoftheglobalwarming,butitmainlycausedbyhumanactivitiesReason2Initialcausesoftemperaturechanges3421AerosolsandsootGreenhousegasesVariationsinEarth'sorbitSolaractivityFossilfuelburningland-usechangePopulationgrowth1GreenhousegasesCO2Inadditiontotheirdirecteffectbyscatteringandabsorbingsolarradiation,aerosolshaveindirecteffectsontheEarth'sradiationbudget.2Aerosolsandsoot3SolaractivityThesun’activitiescausevolcaniceruption,andproducealargenumberofash4VariationsinEarth'sorbitVariationsinorbitalcyclesmayinitiateanewglacialperiodinthefuture,thoughthetimingofthisdependsongreenhousegasconcentrationsaswellastheorbitalforcing.GlobalwarmingcausesallsortsofproblemsProblem3ExtremeweatherSealevelriseLong-termeffectsEcologicalsystems1234ExtremeweatherProjectionssuggestaprobableincreaseinthefrequencyandseverityofsomeextremeweatherevents,suchasheatwaves，Elnino（厄尔尼诺）,drought,floods,thunderstorms,hail（冰雹）,storm,theheatandduststormsSeaLevelRise19thcentury——riseattherateof0.10to0.15peronehundredmetersIce,islands,citydisappearBringdisastertothecoastalareasTerrestrial（陆地）ecosystemsthreatencoralreefs,fisheries,protectedspecies,andothernaturalresourcesofvaluetosocietyEffecttheflightofthemigratorybirdsaffectparticularecosystemsreduceddiversityofecosystemsoceanecosystem123AireffectsLong-termAbruptclimatechangearesponsefromtheEarth'scrusttherapidreleaseofmethaneandcarbondioxidefrompermafrostinjuryandlossoflifealargerisktoglobalandregionalfoodsecurityEconomicandInfrastructurelossLowcarbonlifeSolution4•Mitigation•Adaptation•ClimateengineeringMitigationofclimatereducegreenhousegasemissions,orenhancethecapacityofcarbonsinkstoabsorbGHGsfromtheatmosphereLocaladaptationeffortsEnhancingadaptivecapacityAgriculturalproductionMorespendingonirrigationWeathercontrolDammingglaciallakesGeoengineeringMigrationInsurancesolarradiationmanagementandcarbondioxideremoval.谢谢大家观看ThanksForWatchingLOGO