DOI: 10.1002/2015GL063724
论文题名: A new mechanism for OH vibrational relaxation leading to enhanced CO<inf>2</inf> emissions in the nocturnal mesosphere
作者: Sharma R.D. ; Wintersteiner P.P. ; Kalogerakis K.S.
刊名: Geophysical Research Letters
ISSN: 0094-9128
EISSN: 1944-8859
出版年: 2015
卷: 42, 期: 11 起始页码: 4639
结束页码: 4647
语种: 英语
英文关键词: 4.3 μm emission
; CO2
; nocturnal mesosphere
; O
; O(1D)
; OH
Scopus关键词: Energy transfer
; Ground state
; Ionosphere
; Oxygen
; Electronic energy transfer
; Nocturnal mesosphere
; OH
; Resonant vibrations
; Vibrational energies
; Vibrational excitation
; Vibrational relaxation
; Vibrationally excited
; Excited states
英文摘要: On the basis of experimental and theoretical studies, this paper proposes a new mechanism that contributes to nocturnal 4.3 μm CO2 emissions. It suggests that collisions of ground state O atoms with highly vibrationally excited OH(v), produced by the reaction of H with O3 , remove a substantial fraction of the OH(v) vibrational energy by a fast, spin-allowed, multiquantum vibration-to-electronic energy transfer (ET) process that generates O(1D): OH(v ≥ 5) + O(3P) → OH(0 ≤ v′ ≤ v - 5) + O(1D). The electronically excited O(1D) atom is subsequently deactivated by collisions with N2 in a fast spin-forbidden ET process that leaves the N2 molecule with an average of 2.2 vibrational quanta. Finally, the vibrational excitation of N2 is transferred by a fast, near-resonant vibration-to-vibration ET process to the asymmetric stretch (v3 ) mode of CO2 , which promptly radiates near 4.3 μm. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84934438610&doi=10.1002%2f2015GL063724&partnerID=40&md5=06244a5eb67cac93a1c742eb8cefd3cf
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8744
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Institute for Scientific Research, Boston College, Newton, MA, United States
Recommended Citation:
Sharma R.D.,Wintersteiner P.P.,Kalogerakis K.S.. A new mechanism for OH vibrational relaxation leading to enhanced CO<inf>2</inf> emissions in the nocturnal mesosphere[J]. Geophysical Research Letters,2015-01-01,42(11).