Terrestrial  OH  nightglow measurements during the  Rosetta  flyby | Zendy

Migliorini A. | Zendy; Gérard J. C. | Zendy; Soret L. | Zendy; Piccioni G. | Zendy; Capaccioni F. | Zendy; Filacchione G. | Zendy; Snels M. | Zendy; Tosi F. | Zendy

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Terrestrial OH nightglow measurements during the Rosetta flyby

Author(s) -

Migliorini A.,

Gérard J. C.,

Soret L.,

Piccioni G.,

Capaccioni F.,

Filacchione G.,

Snels M.,

Tosi F.

Publication year - 2015

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1002/2015gl064485

Subject(s) - airglow , population , relaxation (psychology) , infrared , quenching (fluorescence) , physics , vibrational energy relaxation , atomic physics , quantum number , analytical chemistry (journal) , nuclear magnetic resonance , atmospheric sciences , chemistry , optics , excited state , fluorescence , psychology , social psychology , demography , chromatography , sociology

We present a study of the terrestrial hydroxyl nightglow emissions observed with the Visible and Infrared Thermal Imaging Spectrometer on board the Rosetta mission. During these observations, the OH Δ v = 1 and 2 sequences were measured simultaneously. This allowed investigating the relative population of the v = 1 to 9 vibrational levels by using both sequences. In particular, the relative population of the vibrational level v = 1 is determined for the first time from observations. The vibrational population decreases with increasing vibrational quantum number. A good agreement is found with a recent model calculation assuming multiquantum relaxation for OH( v ) quenching by O 2 and single‐quantum relaxation for OH( v ) by N 2 .

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