global warming effects and causes_ a top 10 list _ pakistan environmental watch

8/13/2019 Global Warming Effects and Causes_ a Top 10 List _ Pakistan Environmental Watch

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1.GlobalWarmingCause:Carbondioxideemissions(htp://en.wikipedia.org/wiki/Greenhouse_gas)fromfossilfuel(htp://en.wikipedia.org/wiki/Fossil_fuel) burningpowerplants

Oureverincreasingaddictiontoelectricityfromcoalburningpowerplants(htp://en.wikipedia.org/wiki/Fossilfuel_power_station)releasesenormousamountsofcarbondioxideintotheatmosphere.40%ofU.S.CO2emissionscomefromelectricityproduction,andburningcoalaccountsfor93%ofemissionsfromtheelectricutility(htp://www.wikinvest.com/industry/Electric_Utilities)industry[EPApg.10(htp://yosemite.epa.gov/OAR/globalwarming.nsf/UniqueKeyLookup/RAMR5WNMK2/$File/04executivesummary.pdf)].Everyday,moreelectricgadgetsfloodthemarket,andwithoutwidespreaalternativeenergysources(htp://en.wikipedia.org/wiki/Energy_development),wearehighlydependentonburningcoalforourpersonalandcommercialelectricalsupply.

al Warming Effects and Causes: A Top 10 List | Pakistan Environm... http://greenactivist.wordpress.com/2012/04/11/global-warming-e

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2.GlobalWarmingCause:Carbondioxideemissionsfromburninggasolinefortransportation

Ourmoderncarcultureandappetiteforgloballysourcedgoodsisresponsibleforabout33%ofemissionsintheU.S.[EPApg.8(htp://yosemite.epa.gov/OAR/globalwarming.nsf/UniqueKeyLookup/RAMR6MBLP3/$File/06Energy.pdf)]Withourpopulationgrowingatanalarmingrate,thedemandfomorecarsandconsumergoodsmeansthatweareincreasingtheuseoffossilfuelsfortransportationandmanufacturing.Ourconsumptionisoutpacingourdiscoveriesofwaystomitigatetheeffects,withnoendinsighttoourmassiveconsumerculture.

3.GlobalWarmingCause:Methaneemissionsfromanimals(htp://en.wikipedia.org

/wiki/Enteric_fermentation),agriculture

such

as

rice

paddies

(h

tp://en.wikipedia.org/wiki/Paddy_field),andfromArcticseabeds

Methaneisanotherextremelypotentgreenhousegas,rankingrightbehindCO2.Whenorganicmaterbrokendownbybacteriaunderoxygenstarvedconditions(anaerobicdecomposition(htp://en.wikipedia.org/wiki/Anaerobic_digestion))asinricepaddies,methaneisproduced.Theprocessalsotakesplaceintheintestinesofherbivorousanimals,andwiththeincreaseintheamountofconcentratedlivestockproduction,thelevelsofmethanereleasedintotheatmosphereisincreasing.Anothersourceofmethane(htp://planetsave.com/blog/2008/05/29/methanecouldkickstartincreasedwarming/)ismethaneclathrate,acompoundcontaininglargeamountsofmethanetrappedinthecrystalstructureofice.AsmethaneescapesfromtheArcticseabed(htp://sustainablog.org/2008/09


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/23/scientistsdiscovernewglobalwarmingthreatmethanetimebombunderarcticseabed/),therateofglobalwarmingwillincreasesignificantly.

4.GlobalWarmingCause:Deforestation(htp://en.wikipedia.org/wiki/Deforestation), especiallytropicalforestsforwood,pulp,andfarmland

Theuseofforestsforfuel(bothwoodandforcharcoal)isonecauseofdeforestation,butinthefirstworld,ourappetiteforwoodandpaperproducts,ourconsumptionoflivestockgrazedonformerforesland,andtheuseoftropicalforestlandsforcommoditieslikepalmoilplantationscontributestothemassdeforestationofourworld.Forestsremoveandstorecarbondioxidefromtheatmosphere,andthdeforestationreleaseslargeamountsofcarbon,aswellasreducingtheamountofcarboncaptureonth

planet.

5.GlobalWarmingCause:Increaseinusageofchemicalfertilizersoncroplands


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Inthelasthalfofthe20thcentury,theuseofchemicalfertilizers (htp://planetsave.com/blog/2008/07/25/edibleactivismchangingtheworldthroughwhatweeat/)(asopposedtothehistoricaluseofanimalmanure)hasrisendramatically.Thehighrateofapplicationofnitrogenrichfertilizershaseffectsonthheatstorageofcropland(nitrogenoxideshave300timesmoreheattrappingcapacityperunitofvolumthancarbondioxide)andtherunoff ofexcessfertilizerscreatesdeadzones(htp://www.twilightearth.com/2009/05/thedeadzonehowfarmingiskillingthefishingindustry/)inouroceans.Inadditiontotheseeffects,highnitratelevelsingroundwaterduetooverfertilizationarecauseforconcernforhumanhealth.

6.GlobalWarmingEffect:Riseinsealevels(htp://sustainablog.org/2009/06/04/meltingicecouldleadtomassivewavesofclimaterefugees/)worldwide

Scientistspredictanincreaseinsealevelsworldwideduetothemeltingoftwomassiveicesheetsin

AntarcticaandGreenland,especiallyontheEastcoastoftheU.S(htp://www.washingtonpost.com/wpdyn/content/article/2009/06/05/AR2009060501342.html).However,manynationsaroundtheworldwillexperiencetheeffectsofrisingsealevels(htp://planetsave.com/blog/2008/09/10/newstudiesconcludetheipccsealevelriseprojectionsaretooconservative/),whichcoulddisplacemillionsofpeople.Onenation,theMaldives,isalreadylookingforanewhome,thankstorisingsealevels(htp://redgreenandblue.org/2008/11/10/globalwarmingcausingthemaldivestobuynewhomeland/)


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7.GlobalWarmingEffect:Morekillerstorms

Theseverityofstormssuchashurricanesandcyclonesisincreasing(htp://climateprogress.org/2009/05/25/globalwarminghurricaneskatrina/),andresearchpublishedinNaturefound:

Scientistshavecomeupwiththefirmestevidencesofarthatglobalwarmingwillsignificantlyincreasetheintensityofthemostextremestormsworldwide(htp://www.nature.com/news/2008/080903/full/news.2008.1079.html).Themaximumwindspeedsofthestrongesttropicalcycloneshaveincreasedsignificantlysince1981,accordingtoresearchpublishedinNaturethisweek.Andthupwardtrend,thoughttobedrivenbyrisingoceantemperatures,isunlikelytostopatanytimesoon.

8.GlobalWarmingEffect:Massivecropfailures


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Accordingtorecentresearch,thereisa90%chancethat3billionpeopleworldwidewillhavetochoosebetweenmovingtheirfamiliestomilderclimesandgoinghungry(htp://www.newscientist.com/article/dn16384billionscouldgohungryfromglobalwarmingby2100.html)duetoclimatechangewithin100years.

Climatechangeisexpectedtohavethemostsevereimpactonwatersupplies.Shortagesinfuturearelikelytothreatenfoodproduction,reducesanitation,hindereconomicdevelopmentanddamagecosystems.Itcausesmoreviolentswingsbetweenfloodsanddroughts.Guardian:Global

warmingcauses300,000deathsayear(htp://www.guardian.co.uk/environment/2009/may/29/1)

9.GlobalWarmingEffect:Widespreadextinctionofspecies

AccordingtoresearchpublishedinNature,by2050,risingtemperaturescouldleadtotheextinctionof

morethanamillionspecies(htp://news.nationalgeographic.com/news/2004/01/0107_040107_extinction.html).AndbecausewecantexistwithoutadiversepopulationofspeciesoEarth,thisisscarynewsforhumans.

ClimatechangenowrepresentsatleastasgreatathreattothenumberofspeciessurvivingonEartashabitatdestructionandmodification.ChrisThomas,conservationbiologistattheUniversityofLeeds


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10.GlobalWarmingEffect:Disappearanceofcoralreefs

Areport

on

coral

reefs

from

WWF

(ht

p://www.wwf.org.au/news/n65/)says

that

inaworst

casescenario,coralpopulationswillcollapseby2100duetoincreasedtemperaturesandoceanacidification

(htp://planetsave.com/blog/2009/03/29/expertssayoceanacidificationisaplanetchanger/).Thebleachingofcorals(htp://planetsave.com/blog/2009/01/04/severecoralbleachingcoulddevastatereefecosystems/)fromsmallbutprolongedrisesinseatemperatureisaseveredangerforoceanecosystems,andmanyotherspeciesintheoceansrelyoncoralreefsfortheirsurvival.

Despitetheoceanssimmensity71percentoftheEarthssurfacewithanaveragedepthofalmost4km(2m)thereareindicationsthatitisapproachingitstippingpoint.Forreefs,warminwatersandacidificationareclosinginlikeapairofjawsthatthreatentomakethemthefirstglobalecosystemtodisappear.TimesOnline:21stcenturyNoahsArkneededtosavecoralreefsfrom

extinction(htp://www.timesonline.co.uk/tol/news/environment/article6439553.ece)

Readmoreaboutglobalwarmingeffectsandcauses:

GlobalWarmingWorldbookatNASA(htp://www.nasa.gov/worldbook/global_warming_worldbook.html)TheTop100EffectsofGlobalWarming(htp://www.americanprogress.org/issues/2007/09/climate_100.html)Causeandeffectforglobalwarming(htp://timeforchange.org/causeandeffectforglobalwarmingNinealieninsectstocausepain,illnessandevendeathinBritainasclimatewarmsup

(ht

p://www.telegraph.co.uk/earth/environment/climatechange/5463255/Ninealien

insects

tocausepainillnessandevendeathinBritainasclimatewarmsup.html)

ClimatechangemayactasthreatmultiplierinstrifetornMiddleEast,studyshows(htp://www.jpost.com/servlet/Satellite?cid=1244035011650&pagename=JPost%2FJPArticle%2FShowFull)

Images:FlyingSinger(htp://www.flickr.com/photos/flyingsinger/)MikaelMietinen(htp://www.flickr.com/photos/mikaelmietinen/)SimoneRamella(htp://www.flickr.com/photos/ramella/)net_efekt(htp://www.flickr.com/photos/wheatfields/)BenSutherland(htp://www.flickr.com/photos/bensutherland/)natu(htp://www.flickr.com/photos/natu/)CoreBurn(htp://www.flickr.com/photos/coreburn/)brankomaster(htp://www.flickr.com/photos/brankomaster/)LarsK.Jensen


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(htp://www.flickr.com/photos/larskjensen/) InVeritasLux (htp://www.flickr.com/photos/leonardlow/)atFlickrunderCreativeCommonsLicense(htp://creativecommons.org/licenses/by/2.0/deed.en)

Source:Planetsave(htp://s.t/12tkS)(htp://s.t/12tkS(htp://s.t/12tkS))

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