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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Druckformat: 0040-2508
ISSN Online: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v51.i2-3.40
pages 66-72

Sea Ice Microwave Thermal Radiation Characteristics

V. A. Komyak
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St.,61085 Kharkov
Yu. I. Malyshenko
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkov 61085

ABSTRAKT

An increased snow cover influence on the 8 millimeter-band radiation of sea ice (compared with that of centimeter band) was the reason for additional research of sea ice radiothermal properties. Such investigations (that help to study sea ice distributions) are carried out at the Usikov IRE of the NAS of Ukraine by means of «Analog» airborne radiophysical sounding system. Calculations as well as an experiment performed in a point under the flight path of the system, in a perennial ice area of the eastern sector of Arctic basin, have shown the following: 0.5m thick snow-and-firn cover substitutes considerably the ice 8mm-band radiation for its own radiation (a colder one) producing a masking effect; in the case of small snow thicknesses, another possible source of the spatial fluctuations of perennial ice radiation should be taken into account, the source being connected with the presence, on the ice surface, frozen freshwater «puddles» whose radiothermal temperature is higher than that of the ice.


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