M. A. H. SMITH, C. P. RINSLAND, Science Directorate, NASA Langley Research Center, Hampton, VA 23681-2199; V. MALATHY DEVI, D. CHRIS BENNER, Department of Physics, The College of William and Mary, Williamsburg, VA 23187-8795; AND A. M. COX, New Horizons Governor's School for Science and Technology, Hampton, VA 23666 and Poquoson High School, Poquoson, VA 23662.
The 9.6-µm bands of O3 are used by many remote-sensing experiments for retrievals of terrestrial atmospheric ozone concentration profiles. Line parameter errors can contribute significantly to the total errors in these retrievals, particularly for nadir-viewing. We have used the McMath-Pierce Fourier transform spectrometer at the National Solar Observatory on Kitt Peak to record numerous high-resolution infrared absorption spectra of O3 broadened by various gases at temperatures between 160 and 300 K. Over 25 air-broadened spectra were analyzed simultaneously using a multispectrum nonlinear least squares technique to determine Lorentz pressure-broadening and pressure-induced shift coefficients along with their temperature dependences for selected P- and R-branch transitions in the 3 fundamental band of 16O3. We have compared the present results with other measurements reported in the literature for O3 broadened by air or by N2.