Universität zu Köln

Stangier, Tobias, Hewagama, Tilak, Sornig, Manuela, Sonnabend, Guido, Kostiuk, Theodor, Herrmann, Maren and Livengood, Timothy ORCID: 0000-0002-9947-4075 (2015). Thermal structure of Venus' nightside mesosphere as observed by infrared heterodyne spectroscopy at 10 mu m. Planet Space Sci., 113. S. 359 - 369. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 0032-0633

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Abstract

Ground-based heterodyne spectroscopy is used to observe the night side of Venus by probing single pressure broadened CO2 absorption lines. From the pressure induced line broadening, the predominant temperature at different altitude layers can be deduced. It is found, that heterodyne spectroscopy is sensitive to probe the mesosphere between similar to 60 km and 90 km with an altitude resolution of similar to 4.5 km. During two observing campaigns in March and May 2012, four different locations on the planet were investigated. Herein, we report on the retrieval of vertical temperature profiles in the nightside atmosphere of Venus. Retrieval of atmospheric parameters is based on a Levenberg-Marguard chi(2) optimization that iteratively compares observed data to telluric transmittance corrected Venus' top-of-atmosphere spectra calculated using a radiative transfer algorithm. The deduced profiles are compared to the Venus International Reference Atmosphere and some found to be in satisfactory agreement. Sub-Doppler resolution Infrared heterodyne observations can provide temperature measurements that complement existing sub-mm and space based observations. (C) 2015 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Stangier, Tobias UNSPECIFIED UNSPECIFIED UNSPECIFIED Hewagama, Tilak UNSPECIFIED UNSPECIFIED UNSPECIFIED Sornig, Manuela UNSPECIFIED UNSPECIFIED UNSPECIFIED Sonnabend, Guido UNSPECIFIED UNSPECIFIED UNSPECIFIED Kostiuk, Theodor UNSPECIFIED UNSPECIFIED UNSPECIFIED Herrmann, Maren UNSPECIFIED UNSPECIFIED UNSPECIFIED Livengood, Timothy UNSPECIFIED orcid.org/0000-0002-9947-4075 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-397886
DOI:	10.1016/j.pss.2015.01.021
Journal or Publication Title:	Planet Space Sci.
Volume:	113
Page Range:	S. 359 - 369
Date:	2015
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	0032-0633
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language UPPER-ATMOSPHERE; GENERAL-CIRCULATION; OZONE ABUNDANCE; TEMPERATURE; WINDS; CO2; THERMOSPHERE; AIRGLOW; SPECTRA; ORBITER Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/39788