关于全球变暖global warming你必须看的英文文章_英语新闻

Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse ... 旅游英语/环球文化关于全球变暖你必须知道的globalwarmingnewsenvironment2018.08.09对于globalwarming还一无所知？你在知识界凹凸的不是一点噢亲！下面就给你cram恶补一下关于globalwarming的英文知识，让你在聊起环保话题也游刃有余！什么是全球变暖？WhatisGlobalWarming?GlobalwarmingistheunusuallyrapidincreaseinEarth’saveragesurfacetemperatureoverthepastcenturyprimarilyduetothegreenhousegasesreleasedaspeopleburnfossilfuels.Theglobalaveragesurfacetemperaturerose0.6to0.9degreesCelsius(1.1to1.6°F)between1906and2005,andtherateoftemperatureincreasehasnearlydoubledinthelast50years.Temperaturesarecertaintogoupfurther.自然界有正常的“温室效应”Earth’snaturalgreenhouseeffectEarth’stemperaturebeginswiththeSun.Roughly30percentofincomingsunlightisreflectedbackintospacebybrightsurfaceslikecloudsandice.Oftheremaining70percent,mostisabsorbedbythelandandocean,andtherestisabsorbedbytheatmosphere.Theabsorbedsolarenergyheatsourplanet.Astherocks,theair,andtheseaswarm,theyradiate“heat”energy(thermalinfraredradiation).Fromthesurface,thisenergytravelsintotheatmospherewheremuchofitisabsorbedbywatervaporandlong-livedgreenhousegasessuchascarbondioxideandmethane.WhentheyabsorbtheenergyradiatingfromEarth’ssurface,microscopicwaterorgreenhousegasmoleculesturnintotinyheaters—likethebricksinafireplace,theyradiateheatevenafterthefiregoesout.Theyradiateinalldirections.TheenergythatradiatesbacktowardEarthheatsboththeloweratmosphereandthesurface,enhancingtheheatingtheygetfromdirectsunlight.Thisabsorptionandradiationofheatbytheatmosphere—thenaturalgreenhouseeffect—isbeneficialforlifeonEarth.Iftherewerenogreenhouseeffect,theEarth’saveragesurfacetemperaturewouldbeaverychilly-18°C(0°F)insteadofthecomfortable15°C(59°F)thatitistoday.加强版“温室效应”TheenhancedgreenhouseeffectWhathasscientistsconcernednowisthatoverthepast250years,humanshavebeenartificiallyraisingtheconcentrationofgreenhousegasesintheatmosphereatanever-increasingrate,mostlybyburningfossilfuels,butalsofromcuttingdowncarbon-absorbingforests.SincetheIndustrialRevolutionbeganinabout1750,carbondioxidelevelshaveincreasednearly38percentasof2009andmethanelevelshaveincreased148percent.读完了上面三篇小文章你是不是对温室效应和全球变暖有了更深入的了解呢？对这篇文章感兴趣？那就速速关注“英孚教育口袋英语”官方公众号，每周一次最新最in的英语干货，口袋君请你第一时间品尝！