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Global Warming

Global Warming. What is it ?. It is a theory that as man increases the concentration of gases: principally carbon dioxide and methane in the atmosphere the world´s temperature will rise and climatic changes will follow .

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Global Warming

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  1. Global Warming

  2. Whatisit? • Itis a theorythat as manincreasestheconcentration of gases: principallycarbondioxideand methane in theatmospheretheworld´stemperaturewillrise and climaticchangeswillfollow. • Basedonpredictionsabouttemperaturerisemanypotentialeffectshavebeenpostulated.

  3. Why do theythinkthis? • BasedontheGreenhouseeffectwhich causes theworld to be warmerbecause of thepresence of anatmosphere. Themoonismuchcolderdue to thelack of anatmosphereeventhoughitisthesamedistancefromthesun. • Historicallycarbondioxidelevels and temperaturehavefluctuatedsimilarly

  4. Whatwe do know • Carbondioxidelevels in theatmospherehaveincreased 25% from 0.03% to 0.04% • Thereis a shrinking of ice cover in thepoles • Averageworldtemperaturesappeared to risebyabout 0.5˚C overthelast 50 years, thoughrecently (10 years) there has been no discernible rise

  5. Whatispredicted • Increasingcarbondioxidereleaseswill lead to increasedtemperaturerises (predictionsvarywildlydependentonthecomputermodel and the data input) • Increasingtemperatureswill lead to flooding as thepolesmelt, reducedriverflows as mountainglaciersdisappear, death to coral reefsdue to increasingacidity of the seas and dramaticclimatechange in manyparts of theworldcausingdesertification, speciesextinction spread of tropical diseases and increased extreme weatherevents.

  6. Howisitpredicted • Usinghistorical data. • Extensivemonitoringwithsatellites etc. • Usingcomplexclimatemodellingwithcomputers. • Makinghystericalclaimswithlittlefoundation in reality! • Coordinatedby IPCC (International Panel onClimateChange) set up by UN basedon UK modelfrom UK Met. Office

  7. Whobelievesit • Mostmajorworldleaders and poltiicalparties. • TheIPCC/UN • Manyinfluentialbroadcastersincludingthe BBC • A lot of scientists, butwithreservations. • Alternativeenergy industries and the nuclear industry and politicians and lobbyists in theirpay. • Campaigningorganisations

  8. Whoissceptical • More scientiststhanyoumightthink • Somebroadcastingorganisations • Thepetrochemicalindustry and politicians and lobbyists in theirpay • Certainpoliticalpartiessuch as theRepublicans in the US • Somenationalgovernmentsparticularly in rapidlydevelopingcountriessuch as India and China.

  9. Al Gore • Ex vice president of US • Failedcandidateforpresident. • Owner of majorcommunicationscompany • Fromone of themostinfluentialfamilies of the US • Produced: AnInconvenientTruth in which he highlightedtheproblemdramatically

  10. Whymightthisgraphnotsupportthetheory? Famousgraph

  11. Alternativetheories • More carbondioxideisproducedby natural sourcessuch as volcanoesthanbyman´sactivities. • Cloudsmoderatetheworld´stemperature and these are dependentontheactivity of thesun and cosmicrays. Whenthesunis more active itpushesawaycosmicrayscausingfewerclouds to be seeded and thus a warmerearth. Cyclic

  12. Sun spots and weather

  13. Which of thesegraphs?

  14. Recent data

  15. Controversy • ClimateGate • Al Gore´shypocrisysellinghiscommunicationscompany to anoilcompany • Unfoundedclaimsmade in IPCC reports • Scientistsagreementwithreportfindingsattributedwithouttheiragreement. • Undueimportancegiven to ´scientists´opinionsevenwhenthey are notworking in relevantfields. • General questionsoverinterpretation of data. • Every extreme weathereventnowattributed to global warmingwithouttheslightestshred of evidence.

  16. EssentialViewing! • Aninconvenienttruth: https://www.youtube.com/watch?v=PhHvjC7e7Zs • The Great Global WarmingSwindle • https://www.youtube.com/watch?v=52Mx0_8YEtg

  17. Task • Writeanessay in whichyou compare argumentsfor and againstthetheory of “Manmade global warming”

  18. Youmust

  19. Rubric (Minimum 3 pages) • Introduction (10 marks) • Youmust set thescene. Talkabouttheconcerns and predictionsthatexist and theeffortsbeingmadebygovernments. Youshouldincludeexamples of intergovernmentalorganisations, summits and agreements and mentioncountries in disagreement. Youshould use at least a couple of quotes.

  20. Body of text (10 marks • Youneed to outlinethetheorythatexplainsmanmade global warming • Youshouldsummariseargumentsagainst and countertheories

  21. Analysis and evaluation 10 marks • Youshoulddiscusscriticisms of thetheories and quotereportsthatsupportordisagreewiththem. • Youshould look at thepoliticalbias and reasonswhypeoplesupport/disagreewithman-made global warming and use this to helpyouevaluatethequality of theirarguments • Youshouldjudgewhetherallstatementsfromscientists are equally as reliable

  22. Conclusion (10 marks) • Youshouldstatewhatyouthink and summarise data thatsupportyourpoint of view • Youshouldexplainwhyyouthinkthese are thestrongerarguments.

  23. English and structure (10 marks) • Title, name and sub titlesforreportsections • Pagesnumbered and withborders • Key visual data included, explainedwith a caption and accredited • Sources, quotes and referencesreferred to in thetext and orfootnoted and listed at bottom • Clearlyspellchecked and proofread.

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