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DIGITAL.CSIC
Article . 2013 . Peer-reviewed
Data sources: DIGITAL.CSIC
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Ozeano Artikoko bankisaren beherakada: behaketak berrikusten, kausa fisikoak ulertzen eta etorkizuneko aldaketak iragartzen

Authors: Elosegui, P.;

Ozeano Artikoko bankisaren beherakada: behaketak berrikusten, kausa fisikoak ulertzen eta etorkizuneko aldaketak iragartzen

Abstract

Ozeano Artikoa bankisa mehe batez estalita dago. Bankisa klima polarra taxutzen duen faktore garrantzitsuetako bat da, eta eragina izan dezake klima-sistema globalean ere. Garrantzi hori dela eta, beharrezkoa da Artikoko bankisa horren egoerari begiratzea eta hura ulertzea eta aurreikustea. Behaketek argi eta garbi erakutsi dute izotzaren hedadura eta lodiera murrizten ari direla eta izotz iraunkorra zena aldikako izotz ari dela bilakatzen. Inolako zalantza-izpirik gabe, Artikoko bankisa gainbehera nabarian dago. Bankisaren gainbehera hori ulertzeko, aldaketa horien kausa izan litezkeen prozesu termodinamiko eta dinamiko giltzarriak aztertu behar dira. Prozesuon artean daude, besteak beste, faktore fisikoak (adibidez, epeltzeko joerak), atmosferako eta ozeanoko zirkulazioan gertatutako aldaketak, ozeanoaren gainazalera iristen den eguzki-erradiazio handiagoa eta horri lotutako izotz-albedoaren berrelikadura. Gaur egungo ereduek aurreikusten dute mende hau amaitu baino lehen Ozeano Artikoa izotzik gabe geratuko dela udako urtze-garaiaren bukaeran. Behaketek, baina, erakusten dute bankisaren beherakada ez dela ereduek iragarritako abiaduran gertatzen ari, azkarrago baizik, eta agerian uzten dute ereduak hobetzeko premia. Artikoko bankisaren gainbeherak ondorio garrantzitsuak ditu Artikoko eta Lurreko klima-sistemetan, eta, gainera, gero eta erronka handiagoak ezartzen ditu alor sozioekonomikoan, politikoan eta ekologikoan.

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Spain
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    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green
gold