Marine Forecasting Course

60 Minutes

Juha Karvonen (FMI)

Sea Ice Detection and Products

Published: 13 December 2013

Accurate measurement of sea ice properties is important for example in initializing numerical weather and ice models (data assimilation), navigation in the sea ice covered areas, and for monitoring the annual changes in the global ice cover (climate change). The presentation will cover the remote sensing (RS) techniques for detecting and measuring sea ice. Measuring of different sea ice parameters based on space-borne Rs instruments has been developed significantly during the recent years, and many sea ice parameters can now be measured by different RS instruments. The sea ice parameters that can be measured by RS include ice type, ice deformation, ice concentration (ice area), ice thickness and ice drift. Different kind of RS instruments are used for measuring these quantities: radiometers operating at different wavelengths, sunthetic aperture radars, coastal radars, altimeters. The presentation covers these methods and an introduction to algorithms for measuring the ice parameters. Existing ice products are presented, and also the deficiencies of the methods and validation of the measurements are shortly discussed.

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Filed under Keywords:

Sea ice, radar, instruments