M. Yu. Kulikov, M. V. Belikovich, A. G. Chubarov, S. O. Dementyeva, A. M. Feigin
{"title":"Retrieval of Nighttime Distributions of Mesosphere–Lower Thermosphere Characteristics from Satellite Data","authors":"M. Yu. Kulikov, M. V. Belikovich, A. G. Chubarov, S. O. Dementyeva, A. M. Feigin","doi":"10.1134/s0001433824700051","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The database of the SABER/TIMED satellite campaign includes the reconstruction results of nighttime distributions of O, H, and some other characteristics at heights of the mesosphere–lower thermosphere from measurements of volume emission rate ofOH* profiles near 2 μm, temperature, and ozone. The retrieval procedure is based on the chemical equilibrium approximation of nighttime ozone and a model of two excited OH states (ν = 9.8) forming the indicated radiation. In this work, a modernized model of these levels with the corrected constants corresponding to published data is used to retrieve O, H, OH, HO<sub>2</sub>, and the chemical heating rate at altitudes of 80–100 km according to SABER/TIMED measurements in 2002–2021. It is found that the new parameters of the retrieval procedure lead to significant (up to 2 times or more) changes in the spatial distributions of O, H, and chemical heating rate, but only a slight change in OH and HO<sub>2</sub> distributions.</p>","PeriodicalId":0,"journal":{"name":"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1134/s0001433824700051","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
The database of the SABER/TIMED satellite campaign includes the reconstruction results of nighttime distributions of O, H, and some other characteristics at heights of the mesosphere–lower thermosphere from measurements of volume emission rate ofOH* profiles near 2 μm, temperature, and ozone. The retrieval procedure is based on the chemical equilibrium approximation of nighttime ozone and a model of two excited OH states (ν = 9.8) forming the indicated radiation. In this work, a modernized model of these levels with the corrected constants corresponding to published data is used to retrieve O, H, OH, HO2, and the chemical heating rate at altitudes of 80–100 km according to SABER/TIMED measurements in 2002–2021. It is found that the new parameters of the retrieval procedure lead to significant (up to 2 times or more) changes in the spatial distributions of O, H, and chemical heating rate, but only a slight change in OH and HO2 distributions.
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