Fram Strait sea ice volume export estimated between 2003 and 2008 from satellite data

[1] Satellite-based estimates of monthly sea ice volume exports through Fram Strait for the years 2003 to 2008 are presented. These are obtained from individual satellite observations of sea ice thickness, area, and drift. First, sea ice freeboard is inferred from ICESat laser altimeter observations and then converted to ice thickness estimates. Sea ice area and drift are derived from AMSR-E 89 GHz data. Retrieved sea ice thickness estimates compare within 0.5 m with the few ULS data available in the Fram Strait. The mean, minimum, and maximum observed monthly Fram Strait sea ice volume export amounts to 217, 92, and 420 km3/month, respectively. In comparison to former Fram Strait sea ice volume export estimates obtained during the 1990s our estimates are slightly smaller (−33 km3/month) but are within the natural variability and no significant change of the total amount of Fram Strait sea ice export can be observed.

[1]  Josefino C. Comiso,et al.  Accelerated decline in the Arctic sea ice cover , 2008 .

[2]  Ron Kwok,et al.  Thinning and volume loss of the Arctic Ocean sea ice cover: 2003–2008 , 2009 .

[3]  G. Spreen.  Satellite-based Estimates of Sea Ice Volume Flux: Applications to the Fram Strait Region , 2008 .

[4]  Ron Kwok,et al.  ICESat over Arctic sea ice: Estimation of snow depth and ice thickness , 2008 .

[5]  Seymour W. Laxon,et al.  Five years of Arctic sea ice freeboard measurements from the Ice, Cloud and land Elevation Satellite , 2009 .

[6]  Nina Nordlund,et al.  Monitoring ice thickness in Fram Strait , 1998 .

[7]  L. Kaleschke,et al.  Sea ice remote sensing using AMSR‐E 89‐GHz channels , 2008 .

[8]  R. Kwok.  Outflow of Arctic Ocean Sea Ice into the Greenland and Barents Seas: 1979-2007 , 2009 .

[9]  Michael P. Meredith,et al.  The large‐scale freshwater cycle of the Arctic , 2006 .

[10]  Ron Kwok,et al.  Fram Strait sea ice outflow , 2004 .

[11]  Vladimir F. Radionov,et al.  Snow Depth on Arctic Sea Ice , 1999 .

[12]  Ron Kwok,et al.  Annual cycles of multiyear sea ice coverage of the Arctic Ocean: 1999–2003 , 2004 .

[13]  Ron Kwok,et al.  ICESat measurements of sea ice freeboard and estimates of sea ice thickness in the Weddell Sea , 2008 .

[14]  R. Forsberg,et al.  Arctic Ocean gravity, geoid and sea‐ice freeboard heights from ICESat and GRACE , 2005 .

[15]  Ron Kwok,et al.  Decline in Arctic sea ice thickness from submarine and ICESat records: 1958–2008 , 2009 .

[16]  Stefan Kern,et al.  Satellite-based estimates of sea-ice volume flux through Fram Strait , 2006, Annals of Glaciology.

[17]  R. Gerdes,et al.  Arctic Ocean change heralds North Atlantic freshening , 2005 .