DR-induced escape of O and C from early Mars

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• 作者：Jinjin Zhao^a ; Feng Tian^a ; ^b ; ^{tianfengco@tsinghua.edu.cn} ; ^{tianfengco@mail.tsinghua.edu.cn} ; Yufang Ni^a ; Xiaomeng Huang^a
• 关键词：Atmospheres ; evolution ; Mars ; atmosphere ; Photochemistry
• 刊名：Icarus
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：284
• 期：Complete
• 页码：305-313
• 全文大小：2199 K
• 卷排序：284

文摘

A 3D Monte-Carlo Model is built to simulate photochemical escape from early Mars. ∼1 m GEL H2O and 20 mbar CO2 was lost through photochemical escape since 4.5 Ga. Contributions of 2ndary O and C can reach 40% and 8% of total escape at ∼4.1 Ga. O2+ and CO+ DR are the main sources of escaping O at 1–10 and 20 × XUV respectively. CO2+ and CO+ DR are the main sources of escaping C at 1 and 3–20 × XUV respectively.