beingaffectedbyregionalclimatechanges,particularlytemperatureincreases. • Aglobalassessmentofdatasince1970hasshownitislikelythatanthropogenicwarminghashad adiscernibleinfluenceonmanyphysicalandbiologicalsystems. • Othereffectsofregionalclimatechangesonnaturalandhumanenvironmentsareemerging, althoughmanyaredifficulttodiscernduetoadaptationandnon-climaticdrivers. • Morespecificinformationisnowavailableacrossawiderangeofsystemsandsectorsconcerning thenatureoffutureimpacts,includingforsomefieldsnotcoveredinpreviousassessments. • Morespecificinformationisnowavailableacrosstheregionsoftheworldconcerningthenatureof futureimpacts,includingforsomeplacesnotcoveredinpreviousassessments. • Magnitudesofimpactcannowbeestimatedmoresystematicallyforarangeofpossibleincreases inglobalaveragetemperature. • Impactsduetoalteredfrequenciesandintensitiesofextremeweather,climateandsea-levelevents areverylikelytochange. • Somelarge-scaleclimateeventshavethepotentialtocauseverylargeimpacts,especiallyafterthe 21stcentury. • Impactsofclimatechangewillvaryregionallybut,aggregatedanddiscountedtothepresent,they areverylikelytoimposenetannualcostswhichwillincreaseovertimeasglobaltemperatures increase. • Someadaptationisoccurringnow,toobservedandprojectedfutureclimatechange,butona limitedbasis. • Adaptationwillbenecessarytoaddressimpactsresultingfromthewarmingwhichisalready unavoidableduetopastemissions. • Awidearrayofadaptationoptions
Publication year
2007
Authors
Parry M L; Canziani O F; Palutikof J P
Language
English
