global warming是什么意思
全球变暖。Globalwarming是指地球表面平均温度持续上升的现象，主要是由于人类活动排放温室气体导致的。
自20世纪中叶以来，地球表面平均温度上升了0.6摄氏度，并且上升趋势仍在持续。全球变暖对人类、动物和植物的生存都带来了很大的影响，包括更频繁的极端天气事件、海平面上升、生态系统受损。
为了减缓全球变暖的速度，需要采取一系列措施，包括减少温室气体排放、提高能源效率、发展可再生能源等。
global warming演讲
Globalwarmingisanincreaseintheearth'stemperatureduetofuels,industry,andagriculturalprocessescausedbyhuman,natural,andothergasemissions.Thisresultsinanincreasedemissionofgreenhousegases.Short-wavesolarradiationsinksintotheEarth'satmosphereandwarmsitssurface;whilelongwaveinfraredradiationemittedbyearth'ssurfaceisabsorbed,andthenre-emittedbytracegases.Climatechangesoccurinourearth'satmosphereduetoabuildupofgreenhousegases.Greenhousegasescanoccurnaturallyaswellasaresultofhumanactivities.Problemscanoccurwhenhigherconcentrationsofgreenhousegasesarepresentinouratmospherebecausetheyhaveenhancedourearth'sheattrappingcapability.Therearemanymisconceptionsaboutglobalwarming.Somebelievethatpollutioncausesglobalwarming,butthefactisglobalwarmingistheresultofburningfossilfuels,coal,andoilthatreleasecarbondioxide.Anothermisconceptionisnuclearpowercausesclimatechange.Nuclearpoweractuallyreducesemissionsofcarbondioxidewhenusedinplaceofcoal.Somebelievethatglobalwarmingmeansthatitwillbecomewarmerallover.Thenameismisleadingbecauseinsomeplaces,itwillactuallybecomecolder.Themajorityofscientistsbelieveglobalwarmingisaprocessunderwayandthatitishuman-induced.Thegreenhousegasesarecarbondioxide,methane,andnitrousoxide.Thesegasesoccurnaturally.TheEarthusesthosegasestowarmitssurface.Carbondioxideisreleasedintotheatmospherewhensolidwaste,fossilfuels,wood,andwoodproductsareburned.Eachgreenhousegasabsorbsheatdifferently.Ifnaturalgasesdidnotoccur,thetemperatureswouldbe91.4degreescoolerthanthecurrenttemperatures.Thesegasestrapheatandcausethegreenhouseeffect,risingglobaltemperatures.Humanactivitiesaddtothelevelsofthesegasses,causingmoreproblems.Theburningofsolidwaste,fossilfuels,andwoodproductsaremajorcauses.Automobiles,heatfromhomesandbusinesses,andfactoriesareresponsibleforabout80%oftoday'scarbondioxideemissions,25%ofmethane,and20%ofthenitrousoxideemissions.Theincreaseinagriculture,deforestation,landfills,industrialproduction,andminingcontributeasignificantshareofemissionstoo.Thegasesreleasedintotheatmospherearetrackedbyemissioninventories.Anemissioninventorycountstheamountofairpollutantsdischargedintotheatmosphere.Theseemissioninventoriesareusedbymanyorganizations.Globalwarmingisadangertoahuman'shealth.Itsaffectonclimatecanadverselyaffecthumans.Plagueshavebeenattributedtoglobalwarming.Anincreaseintemperaturecanresultinalongerlifecyclefordiseasesortheagentsspreadingthem.Livinginawarmareamakeseggproductionaquickerprocess.Globalwarmingwillleadtomoreprecipitation,whichenablesinfectiousdiseasestobemoreeasilycontractedandspread.Effectsofglobalwarmingonhumanhealthmightnotbeimmediatelydetected.Globalwarmingcanaffectourfutureabilitytoobtainfood.Asclimateschange,plantsandanimalswillchange,leadingtoachangeintheeatingpatternsofhumans.Anincreaseinprecipitationisoneresultofglobalwarmingthatcouldhavedevastatingeffects.First,thequalityofcropswouldbeaffectedbyanincreaseinprecipitation.Second,increasingraincouldleadtoanincreaseinsoilerosion.Therearewaysthatyoucanhelppreventglobalwarming.Carpooling,auditingtheenergyinyourhome,buyingfuel-efficientcars,andreducingtheelectricityinyourhomearewaystohelppreventglobalwarming.Youcanalsowritetoyourlocalcongressrepresentativeoryourlocalnewspaperinresponsetostories,whichsayglobalwarming,doesnotexist.Governmentauthoritiescanhelpbypassinglawstoreduceemissionsfromfactories.Theycanalsoformatreatywithothercountriestolegallybindlimitsonemissionsofheattrappinggases.Thefutureofemissionsdamagedependsonseveralfactors,demographics,economics,technology,policiesandinstitutionaldevelopments.Futurepredictionsdonotlookgoodforthisplanetifnothingisdone.Withoutthehelpofemissionscontrolpolicies,CO2levelsareprojectedtobe30-150%higherin2100.Ourrenewableresourceswillbeverylimited.Withcooperationfromcitizensandgovernmentofficials,wecanslowtheeffectofglobalwarmingbyreducinggreenhousegasemissions.
关于Global Warming的英文介绍
GlobalwarmingreferstotheincreaseintheaveragetemperatureoftheEarth'snear-surfaceairandoceansinrecentdecadesanditsprojectedcontinuation.
TheglobalaverageairtemperatureneartheEarth'ssurfacerose0.74±0.18°C(1.33±0.32°F)duringthelast100years.TheIntergovernmentalPanelonClimateChange(IPCC)concludes,"mostoftheobservedincreaseingloballyaveragedtemperaturessincethemid-20thcenturyisverylikelyduetotheobservedincreaseinanthropogenicgreenhousegasconcentrations"[1]viathegreenhouseeffect.Naturalphenomenasuchassolarvariationcombinedwithvolcanoesprobablyhadasmallwarmingeffectfrompre-industrialtimesto1950andasmallcoolingeffectfrom1950onward.[2][3]Thesebasicconclusionshavebeenendorsedbyatleast30scientificsocietiesandacademiesofscience,includingallofthenationalacademiesofscienceofthemajorindustrializedcountries.AfewindividualscientistsdisagreewithsomeofthemainconclusionsoftheIPCC.
ClimatemodelprojectionssummarizedbytheIPCCindicatethataverageglobalsurfacetemperaturewillriseafurther1.1to6.4°C(2.0to11.5°F)duringthe21stcentury.[1]Therangeofvaluesresultsfromtheuseofdifferingscenariosoffuturegreenhousegasemissionsaswellasmodelswithdifferingclimatesensitivity.Althoughmoststudiesfocusontheperiodupto2100,warmingandsealevelriseareexpectedtocontinueformorethanamillenniumevenifgreenhousegaslevelsarestabilized.Thedelayinreachingequilibriumisaresultofthelargeheatcapacityoftheoceans.[1]
Increasingglobaltemperatureswillcausesealeveltorise,andisexpectedtoincreasetheintensityofextremeweatherevents[4]andtochangetheamountandpatternofprecipitation.Othereffectsofglobalwarmingincludechangesinagriculturalyields,glacierretreat,speciesextinctionsandincreasesintherangesofdiseasevectors.
Remainingscientificuncertaintiesincludetheamountofwarmingexpectedinthefuture,andhowwarmingandrelatedchangeswillvaryfromregiontoregionaroundtheglobe.Thereisongoingpoliticalandpublicdebateworldwideregardingwhat,ifany,actionshouldbetakentoreduceorreversefuturewarmingortoadapttoitsexpectedconsequences.MostnationalgovernmentshavesignedandratifiedtheKyotoProtocol,aimedatreducinggreenhousegasemissions.