Satellite-observed drop of Arctic sea ice growth in winter 2015-2016

Type Article
Date 2017-04
Language English
Author(s) Ricker RobertORCID1, Hendricks StefanORCID2, Girard-Ardhuin FannyORCID1, Kaleschke LarsORCID3, Lique CamilleORCID1, Tian-Kunze Xiangshan3, Nicolaus MarcelORCID2, Krumpen ThomasORCID2
Affiliation(s) 1 : Univ Brest, CNRS, LOPS, IRD,IUEM, Brest, France.
2 : Alfred Wegener Inst, Helmholtz Ctr Polar & Marine Res, Bremerhaven, Germany.
3 : Univ Hamburg, Hamburg, Germany.
Source Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2017-04 , Vol. 44 , N. 7 , P. 3236-3245
DOI 10.1002/2016GL072244
WOS© Times Cited 37
Keyword(s) Arctic sea ice, sea ice thickness, remote sensing, CryoSat-2, SMOS, sea ice growth

An anomalous warm winter 2015–2016 lead to the lowest winter ice extent and highlights the sensitivity of the Arctic sea ice. Here we use the 6 year record of an improved sea ice thickness product retrieved from data fusion of CryoSat-2 radar altimetry and Soil Moisture and Ocean Salinity radiometry measurements to examine the impact of recent temperature trend on the Arctic ice mass balance. Between November 2015 and March 2016, we find a consistent drop of cumulative freezing degree days across the Arctic, with a negative peak anomaly of about 1000 degree days in the Barents Sea, coinciding with an Arctic-wide average thinning of 10 cm in March with respect to the 6 year average. In particular, the loss of ice volume is associated with a significant decline of March first-year ice volume by 13%. This reveals that due to the loss of multiyear ice during previous years, the Arctic ice cover becomes more sensitive to climate anomalies.

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Ricker Robert, Hendricks Stefan, Girard-Ardhuin Fanny, Kaleschke Lars, Lique Camille, Tian-Kunze Xiangshan, Nicolaus Marcel, Krumpen Thomas (2017). Satellite-observed drop of Arctic sea ice growth in winter 2015-2016. Geophysical Research Letters, 44(7), 3236-3245. Publisher's official version : , Open Access version :