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Comparison between SAR derived sea ice displacement and hindcasts by the operational ocean model HIROMB

Anders Berg (Institutionen för rymd- och geovetenskap, Radarfjärranalys) ; Lars Axell ; Leif E.B. Eriksson (Institutionen för rymd- och geovetenskap, Radarfjärranalys)
Proceedings of the IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Melbourne, Australia, July 21-26, 2013 p. 3630-3633. (2013)
[Konferensbidrag, refereegranskat]

The purpose of this paper is to compare measurements of sea ice displacement from SAR imagery with ice floe drift trajectories modeled by the operational ocean circulation model HIROMB. The study examines the ice movement in the Fram Strait during a two-week period in April, 2011. The results indicate that the HIROMB model overestimates the drift speed by a factor 1 - 2.5, which may be attributed to an underestimated thickness of the ice. The model data also exhibit a directional offset in the positive clockwise direction of 10 - 30 degrees over the whole study region. The results of this study may be used to direct the model development and improve the model initialization.

Nyckelord: sea ice motion, SAR, ice-ocean model



Denna post skapades 2014-03-25. Senast ändrad 2014-10-09.
CPL Pubid: 195680

 

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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Radarfjärranalys (2010-2017)

Ämnesområden

Bildanalys
Oceanografi
Signalbehandling

Chalmers infrastruktur

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Spaceborne Synthetic Aperture Radar for Sea Ice Observations, Concentration and Dynamics