Validation of Atmospheric Absorption Models within the 20–60 GHz Band by Simultaneous Radiosonde and Microwave Observations: The Advantage of Using ECS Formalism

Belikovich, Mikhail V.; Makarov, Dmitriy S.; Serov, Evgeny A.; Kulikov, Mikhail Yu.; Feigin, Alexander M.

doi:10.3390/rs14236042

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Validation of Atmospheric Absorption Models within the 20–60 GHz Band by Simultaneous Radiosonde and Microwave Observations: The Advantage of Using ECS Formalism

by

Mikhail V. Belikovich

,

Dmitriy S. Makarov

,

Evgeny A. Serov

^*

,

Mikhail Yu. Kulikov

and

Alexander M. Feigin

Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov Str., 603950 Nizhny Novgorod, Russia

^*

Author to whom correspondence should be addressed.

Remote Sens. 2022, 14(23), 6042; https://doi.org/10.3390/rs14236042

Submission received: 16 August 2022 / Revised: 21 October 2022 / Accepted: 25 November 2022 / Published: 29 November 2022

(This article belongs to the Section Atmospheric Remote Sensing)

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Abstract

The precise calculation of atmospheric absorption in a microwave band is highly important for atmospheric remote-sensing with ground-based and satellite-borne radiometers, as it is a key element in procedures for temperature, humidity or trace gas concentration retrieval. The accuracy of the absorption model directly affects the accuracy of the retrieved information and reliability of the resulting forecasts. In this study, we analyze the difference between observed and simulated microwave spectra obtained from more than four years of microwave and radiosonde observations over Nizhny Novgorod (56.2°N, 44°E). We focus on zenith-measured microwave data in the 20–60 GHz frequency range in clear-sky conditions. The use of a conventional absorption model in simulations leads to a significant difference in frequency channels within the 51–54 GHz range, while calculations employing a more accurate model based on the Energy Corrected Sudden (ECS) formalism for molecular oxygen absorption reduces the difference several-fold.

Keywords: atmospheric brightness temperature; radiative transfer model; temperature profile retrieval; retrieval accuracy

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MDPI and ACS Style

Belikovich, M.V.; Makarov, D.S.; Serov, E.A.; Kulikov, M.Y.; Feigin, A.M. Validation of Atmospheric Absorption Models within the 20–60 GHz Band by Simultaneous Radiosonde and Microwave Observations: The Advantage of Using ECS Formalism. Remote Sens. 2022, 14, 6042. https://doi.org/10.3390/rs14236042

AMA Style

Belikovich MV, Makarov DS, Serov EA, Kulikov MY, Feigin AM. Validation of Atmospheric Absorption Models within the 20–60 GHz Band by Simultaneous Radiosonde and Microwave Observations: The Advantage of Using ECS Formalism. Remote Sensing. 2022; 14(23):6042. https://doi.org/10.3390/rs14236042

Chicago/Turabian Style

Belikovich, Mikhail V., Dmitriy S. Makarov, Evgeny A. Serov, Mikhail Yu. Kulikov, and Alexander M. Feigin. 2022. "Validation of Atmospheric Absorption Models within the 20–60 GHz Band by Simultaneous Radiosonde and Microwave Observations: The Advantage of Using ECS Formalism" Remote Sensing 14, no. 23: 6042. https://doi.org/10.3390/rs14236042

APA Style

Belikovich, M. V., Makarov, D. S., Serov, E. A., Kulikov, M. Y., & Feigin, A. M. (2022). Validation of Atmospheric Absorption Models within the 20–60 GHz Band by Simultaneous Radiosonde and Microwave Observations: The Advantage of Using ECS Formalism. Remote Sensing, 14(23), 6042. https://doi.org/10.3390/rs14236042

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Validation of Atmospheric Absorption Models within the 20–60 GHz Band by Simultaneous Radiosonde and Microwave Observations: The Advantage of Using ECS Formalism

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