Satellite-derived sea ice export and its impact on Arctic ice mass balance


Contact
Robert.Ricker [ at ] awi.de

Abstract

Sea ice volume export through the Fram Strait represents an important freshwater input to the North Atlantic, which could in turn modulate the intensity of the thermoha-line circulation. It also contributes significantly to variations in Arctic ice mass balance. We present the first estimates of winter sea ice volume export through the Fram Strait using CryoSat-2 sea ice thickness retrievals and three different ice drift products for the years 2010 to 2017. The monthly export varies between − 21 and −540 km 3. We find that ice drift variability is the main driver of annual and interannual ice volume export variability and that the interannual variations in the ice drift are driven by large-scale variability in the atmospheric circulation captured by the Arctic Oscillation and North Atlantic Oscillation indices. On shorter timescale, however, the seasonal cycle is also driven by the mean thickness of exported sea ice, typically peaking in March. Considering Arctic winter multi-year ice volume changes, 54 % of their variability can be explained by the variations in ice volume export through the Fram Strait.



Item Type
Article
Authors
Divisions
Primary Division
Programs
Primary Topic
Peer revision
ISI/Scopus peer-reviewed
Publication Status
Published
Eprint ID
48617
DOI 10.5194/tc-12-3017-2018

Cite as
Ricker, R. , Girard-Ardhuin, F. , Krumpen, T. and Lique, C. (2018): Satellite-derived sea ice export and its impact on Arctic ice mass balance , The Cryosphere, 12 (9), pp. 3017-3032 . doi: 10.5194/tc-12-3017-2018


Download
[img]
Preview
PDF
tc-12-3017-2018.pdf

Download (5MB) | Preview

Share


Citation

Research Platforms
N/A

Campaigns

Funded by
640161


Actions
Edit Item Edit Item