Universität zu Köln

Tokano, Tetsuya (2015). Precipitation Climatology on Titan-like Exomoons. Orig. Life Evol. Biosph., 45 (1-2). S. 231 - 240. DORDRECHT: SPRINGER. ISSN 1573-0875

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Abstract

The availability of liquid water on the surface on Earth's continents in part relies on the precipitation of water. This implies that the habitability of exomoons has to consider not only the surface temperature and atmospheric pressure for the presence of liquid water, but also the global precipitation climatology. This study explores the sensitivity of the precipitation climatology of Titan-like exomoons to these moons' orbital configuration using a global climate model. The precipitation rate primarily depends on latitude and is sensitive to the planet's obliquity and the moon's rotation rate. On slowly rotating moons the precipitation shifts to higher latitudes as obliquity is increased, whereas on quickly rotating moons the latitudinal distribution does not strongly depend on obliquity. Stellar eclipse can cause a longitudinal variation in the mean surface temperature and surface pressure between the subplanetary and antiplanetary side if the planet's obliquity and the moon's orbital distance are small. In this particular condition the antiplanetary side generally receives more precipitation than the subplanetary side. However, precipitation on exomoons with dense atmospheres generally occurs at any longitude in contrast to tidally locked exoplanets.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Tokano, Tetsuya UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-402823
DOI:	10.1007/s11084-015-9424-7
Journal or Publication Title:	Orig. Life Evol. Biosph.
Volume:	45
Number:	1-2
Page Range:	S. 231 - 240
Date:	2015
Publisher:	SPRINGER
Place of Publication:	DORDRECHT
ISSN:	1573-0875
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HABITABLE-ZONE; PLANETS; EARTH; CIRCULATION; MOONS Multiple languages Biology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/40282