MEASUREMENTS OF $O_{3}$ LINE INTENSITIES IN THE $\nu_{3}$ BAND: PRELIMINARY RESULTS
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Date
1995
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
We have recorded new high-resolution absorption spectra of ozone at room temperature using the Fourier transform spectrometer at the McMath-Pierce facility of the National Solar Observatory on Kitt Peak. The spectrometer was set up in double-pass $mode,^{1}$ and appropriate filters were used to obtain coverage of the $800-1400 cm^{-1}$ region at $0.0027 cm^{-1}$ resolution. The ozone samples were contained in glass cells having crossed IR-transmitting and UV-transmitting paths approximately 10 cm in each direction. A 254 nm UV-absorption monitor of the same design as $Pickett et al.^{2}$ was used to measure the ozone partial pressures, which ranged from approximately 0.4 to 1.7 Torr for the 20 spectra recorded. The best three of these spectra were chosen for analysis; for each of these spectra the ozone partial pressure, as measured by the UV monitor, varied by <0.5% during the 38-minute recording time. Using our multispectrum nonlinear least-squares $procedure,^{3}$ we have fit these spectra simultaneously to determine intensities for a number of lines in the $990-1015 cm^{-1}$ region belonging to the P branch of the $\nu_{3}$ fundamental band. These initial results will be compared to previous measurements, and the problems and pitfalls of ozone intensity measurements will be discussed.
Description
1. D. E. Jennings, R. Hubbard, and J. W. Brault, Appl. Opt. 24, 3438 (1985). 2. H. M. Pickett, D. B. Peterson, and J. S. Margolis, J. Geophys. Res. 97, 20,787 (1992). 3. D. Chris Benner, C. P. Rinsland, V. Malathy Devi, M. A. H. Smith, and D. Atkins, JQSRT, in press (1995).
Author Institution: NASA Langley Research Center, Mail Stop 401A, Hampton, VA 23681-0001; The College of William and Mary, Williamsburg, VA 23187-8795
Author Institution: NASA Langley Research Center, Mail Stop 401A, Hampton, VA 23681-0001; The College of William and Mary, Williamsburg, VA 23187-8795