Water Photolysis and Its Contributions to the Hydroxyl Dayglow Emissions in the Atmospheres of Earth and Mars

Chang, Yao1; Li, Qinming1; An, Feng2; Luo, Zijie1,3; Zhao, Yarui1,4; Yu, Yong1; He, Zhigang1; Chen, Zhichao1; Che, Li3; Ding, Hongbin4; Zhang, Weiqing1; Wu, Guorong1; Hu, Xixi5; Xie, Daiqian2; Plane, John M. C.10; Feng, Wuhu6,7; Western, Colin M.8; Ashfold, Michael N. R.8; Yuan, Kaijun1; Yang, Xueming1,9

2020-11-05

10.1021/acs.jpclett.0c02803

Journal of Physical Chemistry Letters   影响因子和分区

1948-7185

Airglow is a well-known phenomenon in the Earth's upper atmosphere, which arises from the emissions of energetic atoms and molecules. The Meinel band emission from high vibrationally excited OH(X) radicals is one of the more important contributors to the airglow from the mesosphere/lower thermosphere. The H + O-3 reaction has long been regarded as the dominant source of these OH(X, high v) radicals. Here we demonstrate that vacuum ultraviolet (VUV) photolysis of water vapor at lambda similar to 112.8 nm represents another source of exceptionally highly vibrationally excited OH(X) radicals, with a nascent vibrational state population distribution that maximizes at v = 9 and extends to at least the v = 15 level. Atmospheric chemistry modeling indicates that OH(X, high v) radicals from H2O photolysis might be detectable in the OH Meinel band dayglow in the upper atmosphere of Earth and should dominate the corresponding emission from the Martian atmosphere. VUV photolysis of H2O also produces electronically excited OH(A) radicals, and simultaneous detection of emissions from OH(X, high v) and OH(A) is shown to offer a route to identifying high-oxygen exoplanetary atmospheres.

SCI ; EI

英语

NI论文

其他

Strategic Priority Research Program of the Chinese Academy of Sciences[XDB17000000] ; Chemical Dynamics Research Center[21688102] ; National Natural Science Foundation of China (NSFC)[21873099,21673232,21922306] ; Chinese Academy of Sciences[121421KYSB20170012] ; Engineering and Physical Sciences Research Council (EPSRC)[EP/L005913]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical

WOS:000589920000024

AMER CHEMICAL SOC

20204409439614

Atmospheric chemistry ; Photolysis ; Ionosphere

Atmospheric Properties:443.1 ; Chemistry, General:801.1 ; Chemical Reactions:802.2 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4

Web of Science

1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Nanjing Univ, Sch Chem & Chem Engn, Inst Theoret & Computat Chem, Key Lab Mesoscop Chem, Nanjing 210023, Peoples R China
3.Dalian Maritime Univ, Sch Sci, Dalian 116026, Liaoning, Peoples R China
4.Dalian Univ Technol, Sch Phys, Key Lab Mat Modificat Laser Ion & Electron Beams, Chinese Minist Educ, Dalian 116024, Peoples R China
5.Nanjing Univ, Kuang Yaming Honors Sch, Nanjing 210023, Peoples R China
6.Univ Leeds, Natl Ctr Atmospher Sci, Leeds LS2 9JT, W Yorkshire, England
7.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England
8.Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England
9.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
10.Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England

Chang, Yao,Li, Qinming,An, Feng,et al. Water Photolysis and Its Contributions to the Hydroxyl Dayglow Emissions in the Atmospheres of Earth and Mars[J]. Journal of Physical Chemistry Letters,2020,11(21):9086-9092.

Chang, Yao.,Li, Qinming.,An, Feng.,Luo, Zijie.,Zhao, Yarui.,...&Yang, Xueming.(2020).Water Photolysis and Its Contributions to the Hydroxyl Dayglow Emissions in the Atmospheres of Earth and Mars.Journal of Physical Chemistry Letters,11(21),9086-9092.

Chang, Yao,et al."Water Photolysis and Its Contributions to the Hydroxyl Dayglow Emissions in the Atmospheres of Earth and Mars".Journal of Physical Chemistry Letters 11.21(2020):9086-9092.