Light & Engineering 34 (4) 2026
Volume 4
Date of publication 08/20/2026
Pages 109–114
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Temperature Dependence of the Thermal Radiation Power of Ice at a Frequency of 15 GHz: Application in Remote Sensing L&E, Vol.34, No.4, 2026
Articles authors:
Sergey N. Gavrilin, Natalia A. Parfentyeva, Evgeniy R. Burmistrov
Sergey N. Gavrilin, Ph. D. of Physical and Mathematical Sciences (1990, IRE RAS). He graduated from MIPT in 1987. At present, Associate Professor of the Department of General and Applied Physics at the National Research University MGSU. He has more than 20 scientific papers. His research interests: radiation transfer, magnetic crystals, aerosols, thermal radio emission
Natalia A. Parfentyeva, Ph. D. in Physics and Mathematics. She graduated from the Physics Department of Moscow State University. Currently, she is the Head of the Department of General and Applied Physics at Moscow State University of Civil Engineering, author of more than 25 textbooks, problem books, and manuals on physics. Under the editorship of N.A. Parfentyeva, the textbooks “Physics” for grades 10–11 of secondary school were published. For several years, she has regularly conducted webinars on physics for teachers at the Prosveshcheniye publishing house. She has over 200 scientific papers. Her research interests: theoretical hydromechanics, aerosol physics, heat and mass transfer theory. She is the Honorary Worker of Higher Professional Education, member of Moscow Society of Nature Explorers
Evgeniy R. Burmistrov, physicist. He graduated from and completed his post-graduate studies at the Physics Faculty of Lomonosov Moscow State University. He is a lecturer at the Department of General and Applied Physics of the National Research University MGSU and the author of over 17 scientific papers. His research interests include pulsed terahertz spectroscopy, polar liquids, photoconductive antennas, and the interaction of radiation with matter
Abstract:
The temperature dependence of the radiation of freshwater ice at a frequency of 15 GHz has been experimentally investigated. The temperature range adjacent to the ice-water phase transition point has been studied. The measurements were carried out at an air temperature of 294 K. The ice temperature varied from 266 K to 273 K. Radiometer central frequency was 15 GHz. The derivative of the radio radiance or brightness temperature on the ice temperature varies from – 0.2 to – 0.7. The change of the derivative near the phase transition point was explained by the influence of liquid water in ice. A significant temperature difference between ambient air and ice leads to an increase in the mass of liquid water in ice. Liquid water is formed in micro cavities in the volume of ice. Water can also form on the air-ice boundary, while the temperature in the ice volume remains negative. The layer of liquid water at the ice-air interface, as well as its inclusions in ice cavities, make a significant contribution to the self-radiation of the thermodynamic system under study, since the signal frequency is close to the maximum frequency of the liquid water spectrum. The observed effect can be used for radiometric monitoring of the state of snow and ice formations and registration of the initial stages of ice melting
References:
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