Journal cover Journal topic
The Cryosphere An interactive open-access journal of the European Geosciences Union
doi:10.5194/tc-2016-279
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Brief communication
02 Jan 2017
Review status
This discussion paper is under review for the journal The Cryosphere (TC).
Brief communication: Antarctic sea ice gain does not compensate for increased solar absorption from Arctic ice loss
Christian Katlein1, Stefan Hendricks1, and Jeffrey Key2 1Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, 27570, Germany
2Center for Satellite Applications and Research, NOAA/NESDIS, Madison, Wisconsin, USA
Abstract. Here we show on the basis of the new consistent long-term observational dataset APP-x, that the observed increase of sea ice extent in the Antarctic cannot compensate for the loss of Arctic sea ice in terms of the shortwave radiation budget in the polar oceans poleward of 50° latitude. The observations show, that apart from retreating sea-ice additional effects like albedo changes and especially changing cloud coverage lead to a total increase of solar shortwave energy deposited into the polar oceans despite of the marginal increase in Antarctic winter sea ice extent.

Citation: Katlein, C., Hendricks, S., and Key, J.: Brief communication: Antarctic sea ice gain does not compensate for increased solar absorption from Arctic ice loss, The Cryosphere Discuss., doi:10.5194/tc-2016-279, in review, 2017.
Christian Katlein et al.
Christian Katlein et al.
Christian Katlein et al.

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Short summary
In the public debate, increasing sea-ice extent in the Antarctic is often highlighted as counter-indicative of global warming. Here we show, that the slight increases in Antarctic sea-ice extent are not able to counter Arctic losses. Using bipolar satellite observations we demonstrate, that even in the Antarctic polar ocean solar shortwave energy absorption is increasing in accordance with strongly increasing shortwave energy absorption in the Arctic Ocean rather than compensating Arctic losses.
In the public debate, increasing sea-ice extent in the Antarctic is often highlighted as...
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