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A microwave technique for mapping ice temperature in the Arctic seasonal sea ice zone

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2 Author(s)
St Germain, K.M. ; Remote Sensing Div., Naval Res. Lab., Washington, DC, USA ; Cavalieri, D.J.

A technique for deriving ice temperature in the Arctic seasonal sea ice zone from passive microwave radiances has been developed. The algorithm operates on brightness temperatures derived from the Special Sensor Microwave/Imager (SSM/I) and uses ice concentration and type from a previously developed thin ice algorithm to estimate the surface emissivity. Comparisons of the microwave derived temperatures with estimates derived from infrared imagery of the Bering Strait yield a correlation coefficient of 0.93 and an RMS difference of 2.1 K when coastal and cloud contaminated pixels are removed. SSM/I temperatures were also compared with a time series of air temperature observation from Gambell on St. Lawrence Island and from Point Barrow, AK weather stations. These comparisons indicate that the relationship between the air temperature and the ice temperature depends on ice type

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:35 ,  Issue: 4 )