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Evaluation of the Atmospheric Chemical Entropy Production of Mars
Luleå tekniska universitet, Institutionen för system- och rymdteknik, Rymdteknik.
Luleå tekniska universitet, Institutionen för system- och rymdteknik, Rymdteknik.ORCID-id: 0000-0001-6479-2236
2015 (engelsk)Inngår i: Entropy, ISSN 1099-4300, E-ISSN 1099-4300, Vol. 17, nr 7, s. 5047-5062Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Thermodynamic disequilibrium is a necessary situation in a system in which complex emergent structures are created and maintained. It is known that most of the chemical disequilibrium, a particular type of thermodynamic disequilibrium, in Earth's atmosphere is a consequence of life. We have developed a thermochemical model for the Martian atmosphere to analyze the disequilibrium by chemical reactions calculating the entropy production. It follows from the comparison with the Earth atmosphere that the magnitude of the entropy produced by the recombination reaction forming O 3 (O + O 2 + CO 2 O 3 + CO 2) in the atmosphere of the Earth is larger than the entropy produced by the dominant set of chemical reactions considered for Mars, as a consequence of the low density and the poor variety of species of the Martian atmosphere. If disequilibrium is needed to create and maintain self-organizing structures in a system, we conclude that the current Martian atmosphere is unable to support large physico-chemical structures, such as those created on Earth.

sted, utgiver, år, opplag, sider
2015. Vol. 17, nr 7, s. 5047-5062
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Forskningsprogram
Atmosfärsvetenskap
Identifikatorer
URN: urn:nbn:se:ltu:diva-15687DOI: 10.3390/e17075047ISI: 000359899800031Scopus ID: 2-s2.0-84940479161Lokal ID: f3b81dd0-420a-4f5b-bc2a-1ba26e96bfedOAI: oai:DiVA.org:ltu-15687DiVA, id: diva2:988662
Merknad
Validerad; 2015; Nivå 2; 20150720 (javmar)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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