Universität zu Köln

Ando, Hiroki, Imamura, Takeshi, Tellmann, Silvia, Patzold, Martin, Hausler, Bernd, Sugimoto, Norihiko ORCID: 0000-0002-5135-7179, Takagi, Masahiro, Sagawa, Hideo, Limaye, Sanjay, Matsuda, Yoshihisa, Choudhary, Raj Kumar and Antonita, Maria (2020). Thermal structure of the Venusian atmosphere from the sub-cloud region to the mesosphere as observed by radio occultation. Sci Rep, 10 (1). LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

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Abstract

We present distributions of the zonal-mean temperature and static stability in the Venusian atmosphere obtained from Venus Express and Akatsuki radio occultation profiles penetrating down to an altitude of 40 km. At latitudes equatorward of 75 degrees, static stability derived from the observed temperature profiles is consistent with previous in-situ measurements in that there is a low-stability layer at altitudes of 50-58 km and highly and moderately stratified layers above 58 km and below 50 km, respectively. Meanwhile, at latitudes poleward of 75 degrees, a low-stability layer extends down to 42 km, which has been unreported in analyses of previous measurements. The deep low-stability layer in the polar region cannot be explained by vertical convection in the middle/lower cloud layer, and the present result thus introduces new constraints on the dynamics of the sub-cloud atmosphere. The Venusian atmosphere is in striking contrast to the Earth's troposphere, which generally has a deeper low-stability layer at low latitudes than at mid- and high latitudes.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Ando, Hiroki UNSPECIFIED UNSPECIFIED UNSPECIFIED Imamura, Takeshi UNSPECIFIED UNSPECIFIED UNSPECIFIED Tellmann, Silvia UNSPECIFIED UNSPECIFIED UNSPECIFIED Patzold, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Hausler, Bernd UNSPECIFIED UNSPECIFIED UNSPECIFIED Sugimoto, Norihiko UNSPECIFIED orcid.org/0000-0002-5135-7179 UNSPECIFIED Takagi, Masahiro UNSPECIFIED UNSPECIFIED UNSPECIFIED Sagawa, Hideo UNSPECIFIED UNSPECIFIED UNSPECIFIED Limaye, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED Matsuda, Yoshihisa UNSPECIFIED UNSPECIFIED UNSPECIFIED Choudhary, Raj Kumar UNSPECIFIED UNSPECIFIED UNSPECIFIED Antonita, Maria UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-343937
DOI:	10.1038/s41598-020-59278-8
Journal or Publication Title:	Sci Rep
Volume:	10
Number:	1
Date:	2020
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2045-2322
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language VERTICAL STRUCTURE; MIDDLE ATMOSPHERE; VERA ONBOARD; CIRCULATION; EXPRESS; VORTEX; WAVES Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/34393