Comparison of the results of ground-based measurements of atmospheric radiation in 5 mm band of molecular oxygen with two spectroradiometers

A. A. Shvetsov Sr.; M. V. Belikovich; M. Yu. Kulikov; A. A. Krasilnikov; V. G. Ryskin; A. M. Feygin

doi:10.1117/12.2644924

7 December 2022 Comparison of the results of ground-based measurements of atmospheric radiation in 5 mm band of molecular oxygen with two spectroradiometers

A. A. Shvetsov Sr., M. V. Belikovich, M. Yu. Kulikov, A. A. Krasilnikov, V. G. Ryskin, A. M. Feygin

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Proceedings Volume 12341, 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 123416J (2022) https://doi.org/10.1117/12.2644924
Event: 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2022, Tomsk, Russia

Abstract

Measurements of atmospheric radiation over Nizhny Novgorod at the frequencies of the 5 mm band of molecular oxygen were carried out simultaneously with two devices: Spectroradiometer IAP RAS and RPG-HATPRO profiler. Comparison of the results at matching frequencies showed that the difference in the values of the measured brightness temperatures for a clear atmosphere in the zenith direction can reach 3 K, which significantly exceeds their variations during observation time. Such discrepancies should be taken into account when using these data to retrieval the troposphere temperature profile.

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A. A. Shvetsov Sr., M. V. Belikovich, M. Yu. Kulikov, A. A. Krasilnikov, V. G. Ryskin, and A. M. Feygin "Comparison of the results of ground-based measurements of atmospheric radiation in 5 mm band of molecular oxygen with two spectroradiometers", Proc. SPIE 12341, 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 123416J (7 December 2022); https://doi.org/10.1117/12.2644924

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KEYWORDS

Oxygen

Temperature metrology

Microwave radiation

Troposphere

Calibration

Radiometry

Earth's atmosphere

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