Nighttime O(<sup>1</sup>D) distributions in the mesopause region derived from SABER data
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Published:2020-07-08
Issue:4
Volume:38
Page:815-822
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ISSN:1432-0576
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Container-title:Annales Geophysicae
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language:en
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Short-container-title:Ann. Geophys.
Author:
Kulikov Mikhail Yu.ORCID, Belikovich Mikhail V.ORCID
Abstract
Abstract. In this study, the new source of O(1D) in the mesopause
region due to the process OH(ν≥5)+O(3P)→OH(0≤ν′≤ν-5)+O(1D) is applied to SABER data to
estimate the nighttime O(1D) distributions for the years 2003–2005. It
is found that O(1D) evolutions in these years are very similar to each
other. Depending on the month, monthly averaged O(1D) distributions
show two to four maxima with values up to 340 cm−3 which are localized in height (at ∼92–96 km) and latitude (at ∼20–40 and ∼60–80∘ S, N). Annually averaged distributions in 2003–2005 have one weak maximum at ∼93 km and ∼65∘ S with values
of 150–160 cm−3 and three pronounced maxima (with values up to 230 cm−3) at ∼95 km and ∼35∘ S, at ∼94 km and ∼40∘ N and at ∼93 km and ∼65–75∘ N, correspondingly. In general, there is slightly more O(1D) in the
Northern Hemisphere than in the Southern Hemisphere. The obtained results are a useful data set for subsequent estimation of nighttime O(1D)
influence on the chemistry of the mesopause region.
Publisher
Copernicus GmbH
Subject
Space and Planetary Science,Earth and Planetary Sciences (miscellaneous),Atmospheric Science,Geology,Astronomy and Astrophysics
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