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Nighttime and daytime variation of atmospheric NO 2 from ground‐based infrared measurements
Author(s) -
Flaud J. M.,
CamyPeyret C.,
Brault J. W.,
Rinsland C. P.,
Cariolle D.
Publication year - 1988
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 - 10.1029/gl015i003p00261
Subject(s) - sunrise , daytime , sunset , atmospheric sciences , environmental science , solar telescope , diurnal temperature variation , infrared , spectral line , physics , telescope , optics , astronomy
During the period February 28 to March 2, 1986, 19 high resolution atmospheric spectra have been recorded during the night using the moon or during the day using the sun as a source with the Fourier transform spectrometer at the McMath Solar telescope on Kitt Peak. The NO 2 absorption peak located at 2914.65 cm −1 has been used to derive from the spectra the total vertical column densities of atmospheric NO 2 . A rather rapid decrease of the NO 2 amount during the night has been observed and its daytime increase from sunrise to sunset has been confirmed. A comparison with the predictions of a photochemical model is given.