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Laboratory measurements of NO 2 line parameters near 1600 cm −1 for the interpretation of stratospheric spectra
Author(s) -
May R. D.,
Webster C. R.
Publication year - 1990
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/gl017i012p02157
Subject(s) - spectral line , laser , optics , environmental science , spectrometer , stratosphere , remote sensing , range (aeronautics) , materials science , physics , atmospheric sciences , geology , astronomy , composite material
Tunable diode laser laboratory measurements of infrared spectral parameters of selected NO 2 lines near 1600 cm −1 have been made to assess the contribution of uncertainties in these parameters to stratospheric measurements of NO 2 made using the Balloon‐borne Laser In‐Situ Sensor (BLISS) tunable diode laser spectrometer. Relative line intensities are measured to accuracies of better than 2%, with a root‐sum‐squared uncertainty in the absolute linestrengths of 4.5%. Air‐broadening coefficients have been determined from measurements at total pressures in the range 20–100 Torr, at températures of 293 K and 214 K. These results are also discussed in the light of the discrepancies between infrared instruments flown in the 1982 and 1983 Balloon Intercomparison Campaigns.