Cutting CO2 levels by 2100 necessary for survival

August 8th, 2011 - 5:34 pm ICT by IANS  

Theoptionsincludeusingmorenuclearandrenewableenergy,choosingelectricityoverfossilfuels,minimisingemissionsthroughcarboncapturetechnologies,evenusingforeststostorecarbon.

Fiveyearsago,theIntergovernmentalPanelonClimateChange(IPCC)askedtheclimatesciencecommunitytoprovidescenariosofgreenhousegasemissionsandlandusechangetoguidecomputermodelsthatsimulatepotentialchangestoEarth’sclimate.

ResearchersfromtheJointGlobalChangeResearchInstitute(JGCRI)introducedthework,calledtheRCP4.5scenario,oneoffourscenariosthatscientistswilluseworldwidetostudyhowclimatemightrespondtodifferentincreasesofgreenhousegases.

“Withoutanyaction,theemissions,andtheheattrappedintheatmosphere,wouldbemuchhigher,leadingtomoresevereclimatechange,”saidAllisonThomson,ascientistatJGCRI,reportsthejournalClimaticChange.

JGCRIisacollaborationbetweentheUSDepartmentofEnergy’sPacificNorthwestNationalLab(PNNL)inWashingtonandtheUniversityofMaryland,accordingtoJGCRIstatement.

TheteamusedthePNNLGlobalChangeAssessmentModel(GCAM)togeneratethescenario.Unlikesimilarmodels,itincludescarbonstoredinforests,causingforestacreagetoincrease,includingbiofuelsgeneratedfromcropsandcropwaste.

“Thisscenarioandtheotherthreeproducedinthisprojectwillprovideacommonthreadforclimatechangeresearchacrossmanydifferentsciencecommunities,”Thomsonadded.

–Indo-AsianNewsService
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