Facets of Arctic energy accumulation based on observations and reanalyses 2000-2015

Various observation- and reanalysis-based estimates of sea ice mass and ocean heat content trends imply that the energy imbalance of the Arctic climate system was similar [1.0 (0.9,1.2) Wm-2] to the global ocean average during the 2000-2015 period. Most of this extra heat warmed the ocean, and a com...

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Veröffentlicht in:Geophysical research letters. - 1984. - 43(2016), 19 vom: 16. Okt., Seite 10420-10429
1. Verfasser: Mayer, Michael (VerfasserIn)
Weitere Verfasser: Haimberger, Leopold, Pietschnig, Marianne, Storto, Andrea
Format: Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Geophysical research letters
Schlagworte:Journal Article Arctic climate change energy budget ocean heat content sea ice
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520 |a Various observation- and reanalysis-based estimates of sea ice mass and ocean heat content trends imply that the energy imbalance of the Arctic climate system was similar [1.0 (0.9,1.2) Wm-2] to the global ocean average during the 2000-2015 period. Most of this extra heat warmed the ocean, and a comparatively small fraction went into sea ice melt. Poleward energy transports and radiation contributed to this energy increase at varying strengths. On a seasonal scale, stronger radiative energy input during summer associated with the ice-albedo feedback enhances seasonal oceanic heat uptake and sea ice melt. In return, lower sea ice extent and higher sea surface temperatures lead to enhanced heat release from the ocean during fall. This weakens meridional temperature gradients, consequently reducing atmospheric energy transports into the polar cap. The seasonal cycle of the Arctic energy budget is thus amplified, whereas the Arctic's long-term energy imbalance is close to the global mean 
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650 4 |a ocean heat content 
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700 1 |a Pietschnig, Marianne  |e verfasserin  |4 aut 
700 1 |a Storto, Andrea  |e verfasserin  |4 aut 
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