Empirical Line Parameters of H216O near 0.94 μm: Positions, Intensities and Air-Broadening Coefficients

✍ Scribed by L.R. Brown; R.A. Toth; M. Dulick

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 260 KB
• Volume: 212
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.2002.8515

✦ Synopsis

To support the interpretation of remote sensing instruments that use water features near 0.94 µm, the water vapor line parameters have been measured using 16 laboratory spectra of pure water and 9 spectra of water + air mixtures recorded at resolution 0.012 and 0.02 cm -1 with the McMath Fourier transform spectrometer at the National Solar Observatory located at Kitt Peak. Over 3300 line positions and intensities between 9 650 and 11 400 cm -1 and 507 air-broadened widths and 462 pressure-induced shifts in positions between 10 150 and 11 190 cm -1 have been obtained at room temperature for the main isotopomer, H 2 16 O. The numbers of width measurements involving the parallel bands are 108 for (121), 192 for ( ), and 86 for the (003) upper states; for the perpendicular bands, the numbers of widths are 4 for (022), 78 for (300), and 38 for the (102) upper states. These empirical values have been combined with calculated positions and intensities of H 2 18 O and H 2 17 O and with available broadening coefficients from other spectral regions to form a new composite database. The sum of 5002 transition intensities for the region is 0.6417 cm -2 • atm -1 (2.588 × 10 -20 cm -1 /(molecule • cm -2