论文信息 - Polarization effects in seaice signatures

Polarization effects in seaice signatures

Observations of microwave emissivities of multiyear sea ice showed anomalies at horizontal polarization in the frequency range from 5 to 35 GHz during the Norwegian Remote Sensing Experiment (NORSEX) [1] in September and October 1979. The effect can be explained by layers of solid ice present in the dry snow cover throughout the NORSEX area. A special experiment made on a typical multiyear floe confirms this explanation. Since the results also indicate that at 94 GHz the layers do not affect the radiation, a dual-polarized radiometer in the 90-GHz window is a promising sea-ice sensor.

[1] C. Mätzler,et al. Investigations on snow parameters by radiometry in the 3- to 60-mm wavelength region , 1980 .

[2] Ola M. Johannessen,et al. Norwegian Remote Sensing Experiment: Evaluation of the Nimbus 7 scanning multichannel microwave radiometer for sea ice research , 1983 .

[3] W. Peake. Interaction of electromagnetic waves with some natural surfaces , 1959 .

[4] P. Gloersen,et al. Nimbus 7 SMMR observations of the Bering Sea ice cover during March 1979 , 1983 .

[5] E. Schanda. Remote Sensing for Environmental Sciences , 1976, Ecological Studies.

[6] C. Matzler,et al. Towards the Definition of Optimum Sensor Specifications for Microwave Remote Sensing of Snow , 1982, IEEE Transactions on Geoscience and Remote Sensing.

[7] B. E. Troy,et al. Microwave emission from high Arctic sea ice during freeze-up , 1984 .

[8] R. Ramseier,et al. An algorithm to measure sea ice concentration with microwave radiometers , 1985 .

[9] Christian Mätzler,et al. Microwave dielectric properties of surface snow , 1984 .