EXPERIMENTAL LINE PARAMETERS OF THE OXYGEN A-BAND AT $0.762 \mu$m

$^{a}$ C.R. Pollock, F.R. Petersen, D.A. Jennings, J.S. Wells and A.G. Maki, J. Mol. Spectrosc. v30, 37-44 (1983) and N. Picque and G. Guelachvili, J. Mol. Spectrosc, v185, 244-248 (1997). $^{b}$ Part of this research reported in this paper was performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.Author Institution: Jet Propulsion Laboratory, California Institute of Technology; NOAO/National Solar Observatory, TucsonSAGE III (an EOS remote sensing experiment scheduled to orbit the Earth) will utilize the prominent features of the oxygen A-band to monitor atmospheric pressure and temperature. To support this, a laboratory study has been undertaken to measure intensities, pressure-broadened line widths and pressure-induced frequency shifts for the strongest transitions between 13040 and $13165 cm^{-1}$. Experimental values have been obtained from over thirty spectra recorded at $0.02 cm^{-1}$ resolution with the McMath Fourier transform spectrometer located at Kitt Peak National Observatory / National Solar Observatory in Arizona. These data have been taken with gas samples of pure oxygen and oxygen / nitrogen mixtures at room and cold temperatures (down to 200 K) in order that the temperature dependences of the self-and nitrogen-broadened widths can be determined. Finally, for calibration, a broad band spectrum has been recorded between 4000 and $14000 cm^{-1}$ using InSb and Silicon diode detectors simultaneously; with this, the line positions of the A-band of oxygen have been referenced to CO $standards ^{a}$ in the 2-0 and 3-0 bands (at 2.35 and $1.57 \mu$m $respectively).^{b}