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1、ClimateChangeHitstheOceansWhenscientistssaytheplaiswarmingtheyusuallypointtorisingairtemperaturesasproof.That’sreasonableenoughespeciallysincethewarmthoftheairtemperatureaffectsusdirectlysowefeelthechangethescientistsare

2、measuring.Butit’salsomisleading:whiletheloweratmospherehasbeengraduallywarmingoverthepast50yearsithappensunevenlyrisingsharplyfayeartwoevententhenflatteningout.Thatstuttersteppatternisduetorelativelyshtlivedeffectsontopo

3、fthegeneralwarminganElNinocurrentinthePacificmakingthingswarmerfexampleavolcaniceruptionlike1991’sMt.Pinatuboproducingacloudofdustthatmakesthingscooler.Overtimethesecanceloutbutitcanbetemptingthoughincrecttothinkatempary

4、flatteningmeansglobalwarminghasstopped.Togetameasureofwhat’strulygoingonscientistslooktotheoceansslowtoheatupslowtocooldownthuslesspronetoshttermvariations.IndeedsaysJohnLymananoceanographerattheUniversityofHawaii“about8

5、090percentoftheextraheatabsbedbytheplaisabsbedintotheoceans.”ThatbeingthecaseLymanseveralcolleaguessetabouttryingtoseehowtheocean’sheatcontenthaschangedoverthepastcoupleofdecades.TheresultappearinginthecurrentissueofNatu

6、rewillgivelittlecomfttoclimatechangedeniers:theoceanshavebeenwarminginexablysinceatleast1993incompletemeasurementsinconsistenciesindataprocessingWillisLymandescribeintheirownstudy.Incompletethoughthenumbersarehoweverther

7、esultsseemreasonablyrobustthey’recrobatedbyanotherentirelydifferentsetofmeasurements.Astheoceanswarmtheyexpindeeduptohalfofsealevelrisecomesnotfrommeltingglaciersdisappearingicecapsbutfromthephysicalexpansionofseawateras

8、itheatsup.liketheocean’sheatcontenttheriseinsealevelisgradualenoughthatovertimetheyeartoyearevendecadelongupsdownsdisappearintoasteadylongtermincrease.“Acenturyago”saysWillis“sealevelwasrisingataboutonemillimeterperyear.

9、Fiftyyearsagoitwastwo.nowit’srisingatthreemillimetersperyear.”Inshttheoceansarecurrentlydoingtheheavyliftinginabsbingtrappedheat.Ultimatelythoughsomeofthatheatwillbetransferredbacktotheaircontinuingtowarmtheplaceswelivee

10、venifwemanagetostopgeneratinggreenhousegasesatsuchagreatrate.Thatmakesitcrucialtounderstexactlywhat’sgoingonoffshe.IfscientistscanrefinetheirmeasurementswritesTrenberthinacommentaryonthisweek’sNaturepaper“oceanheatconten

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