Tracing the fate of carbon and the atmospheric evolution of Mars
The climate of Mars likely evolved from a warmer, wetter early state to the cold, arid current state. However, no solutions for this evolution have previously been found to satisfy the observed geological features and isotopic measurements of the atmosphere. Here we show that a family of solutions e...
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| Veröffentlicht in: | Nature communications 2015-11, Vol.6 (1), p.10003-10003, Article 10003 |
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| creator | Hu, Renyu Kass, David M. Ehlmann, Bethany L. Yung, Yuk L. |
| description | The climate of Mars likely evolved from a warmer, wetter early state to the cold, arid current state. However, no solutions for this evolution have previously been found to satisfy the observed geological features and isotopic measurements of the atmosphere. Here we show that a family of solutions exist, invoking no missing reservoirs or loss processes. Escape of carbon via CO photodissociation and sputtering enriches heavy carbon (
13
C) in the Martian atmosphere, partially compensated by moderate carbonate precipitation. The current atmospheric
13
C/
12
C and rock and soil carbonate measurements indicate an early atmosphere with a surface pressure |
| doi_str_mv | 10.1038/ncomms10003 |
| format | Article |
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13
C) in the Martian atmosphere, partially compensated by moderate carbonate precipitation. The current atmospheric
13
C/
12
C and rock and soil carbonate measurements indicate an early atmosphere with a surface pressure <1 bar. Only scenarios with large amounts of carbonate formation in open lakes permit higher values up to 1.8 bar. The evolutionary scenarios are fully testable with data from the MAVEN mission and further studies of the isotopic composition of carbonate in the Martian rock record through time.
Mars likely evolved from a warmer, wetter early state to the cold, arid current climate, but this evolution is not reflected in recent observations and measurements. Here, the authors derive quantitative constraints on the atmospheric pressure through time, identifying a mechanism that explains the carbon data.</description><identifier>ISSN: 2041-1723</identifier><identifier>EISSN: 2041-1723</identifier><identifier>DOI: 10.1038/ncomms10003</identifier><identifier>PMID: 26600077</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>704/2151/213 ; 704/2151/2809 ; 704/445/824 ; Humanities and Social Sciences ; multidisciplinary ; Science ; Science (multidisciplinary)</subject><ispartof>Nature communications, 2015-11, Vol.6 (1), p.10003-10003, Article 10003</ispartof><rights>The Author(s) 2015</rights><rights>Copyright Nature Publishing Group Nov 2015</rights><rights>Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. 2015 Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c512t-c93d403e6a841df067795de42db5771c896f760eafa6f194f4f3496075934bd23</citedby><cites>FETCH-LOGICAL-c512t-c93d403e6a841df067795de42db5771c896f760eafa6f194f4f3496075934bd23</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4673500/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4673500/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,864,885,27924,27925,41120,42189,51576,53791,53793</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26600077$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Hu, Renyu</creatorcontrib><creatorcontrib>Kass, David M.</creatorcontrib><creatorcontrib>Ehlmann, Bethany L.</creatorcontrib><creatorcontrib>Yung, Yuk L.</creatorcontrib><title>Tracing the fate of carbon and the atmospheric evolution of Mars</title><title>Nature communications</title><addtitle>Nat Commun</addtitle><addtitle>Nat Commun</addtitle><description>The climate of Mars likely evolved from a warmer, wetter early state to the cold, arid current state. However, no solutions for this evolution have previously been found to satisfy the observed geological features and isotopic measurements of the atmosphere. Here we show that a family of solutions exist, invoking no missing reservoirs or loss processes. Escape of carbon via CO photodissociation and sputtering enriches heavy carbon (
13
C) in the Martian atmosphere, partially compensated by moderate carbonate precipitation. The current atmospheric
13
C/
12
C and rock and soil carbonate measurements indicate an early atmosphere with a surface pressure <1 bar. Only scenarios with large amounts of carbonate formation in open lakes permit higher values up to 1.8 bar. The evolutionary scenarios are fully testable with data from the MAVEN mission and further studies of the isotopic composition of carbonate in the Martian rock record through time.
Mars likely evolved from a warmer, wetter early state to the cold, arid current climate, but this evolution is not reflected in recent observations and measurements. 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13
C) in the Martian atmosphere, partially compensated by moderate carbonate precipitation. The current atmospheric
13
C/
12
C and rock and soil carbonate measurements indicate an early atmosphere with a surface pressure <1 bar. Only scenarios with large amounts of carbonate formation in open lakes permit higher values up to 1.8 bar. The evolutionary scenarios are fully testable with data from the MAVEN mission and further studies of the isotopic composition of carbonate in the Martian rock record through time.
Mars likely evolved from a warmer, wetter early state to the cold, arid current climate, but this evolution is not reflected in recent observations and measurements. Here, the authors derive quantitative constraints on the atmospheric pressure through time, identifying a mechanism that explains the carbon data.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>26600077</pmid><doi>10.1038/ncomms10003</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | 704/2151/213 704/2151/2809 704/445/824 Humanities and Social Sciences multidisciplinary Science Science (multidisciplinary) |
| title | Tracing the fate of carbon and the atmospheric evolution of Mars |
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