Accurate frequency measurements for H(2)O and (16)O(3) in the 119-cm(-1)OH atmospheric window.

We report frequency measurements for relatively weak H(2)O and (16)O(3) rotational transitions in the ground state and in the nu(2) = 1 vibrationally excited state. We obtained the frequency measurements by using the laboratory technique of tunable far-infrared spectroscopy with the objective of improving H(2)O and O(3) line parameters required for modeling the important atmospheric spectral window near 119 cm(-1). New sets of molecular constants are calculated from the (16)O(3) data, and improved values are reported for the frequencies of the H(2)O lines. The improvement in atmospheric simulations obtained with the new results is illustrated by comparison with recent high-resolution balloon-based atmospheric measurements. These new data significantly improve simulations of high-resolution atmospheric emission spectra.

[1]  P. Ade,et al.  Improved sensitivity of tunable far-infrared spectroscopy: application to the detection of HBr in the ? = 1 state. , 1997, Applied optics.

[2]  M. Ridolfi,et al.  Stratospheric HBr concentration profile obtained from far‐infrared emission spectroscopy , 1997 .

[3]  Massimo Inguscio,et al.  Precise measurement of molecular dipole moments with a tunable far-infrared Stark spectrometer: application to HOCl , 1996 .

[4]  K. Chance,et al.  Simultaneous measurements of stratospheric HOx, NOx, and Clx: Comparison with a photochemical model , 1996 .

[5]  Franz Schreier,et al.  Observation of stratospheric OH at 2.5 THz with an airborne heterodyne system , 1995 .

[6]  F. Matsushima,et al.  H/sub 2/O: a frequency and wavelength standard from 0.5 to 5 THz (18-160 cm/sup -1/) , 1995 .

[7]  S. Mikhailenko,et al.  Calculation of High Rotation Energies of the Water Molecule Using the Generating Function Model , 1995 .

[8]  K. Chance,et al.  The smithsonian astrophysical observatory database SAO92 , 1994 .

[9]  K. Evenson,et al.  Improved Molecular Constants and Frequencies for the CO2 Laser from New High-J Regular and Hot-Band Frequency Measurements , 1994 .

[10]  H. Pickett,et al.  Stratospheric OH measurements with a far-infrared limb observing spectrometer , 1993 .

[11]  P. Ade,et al.  Optimisation of FIR photoconductors for atmospheric spectroscopy , 1992 .

[12]  Noelle A. Scott,et al.  Management and study of spectroscopic information: The GEISA program , 1992 .

[13]  P. De Natale,et al.  Tunable far infrared spectroscopy of 16O3 ozone , 1991 .

[14]  Kenneth M. Evenson,et al.  Pressure broadening of the 118.455 cm−1 rotational lines of OH by H2, He, N2, and O2 , 1991 .

[15]  Francesco S. Pavone,et al.  Rotational far infrared spectrum of 13CO , 1990 .

[16]  H. Pickett,et al.  The HITRAN database: 1986 edition. , 1987, Applied optics.

[17]  J. H. Park,et al.  Analysis of far-infrared emission Fourier transform spectra. , 1986, Applied optics.

[18]  J. W. C. Johns,et al.  High-resolution far-infrared (20–350-cm −1 ) spectra of several isotopic species of H 2 O , 1985 .

[19]  H. Müller,et al.  Submillimeter, millimeter, and microwave spectral line catalog. , 1985, Applied optics.

[20]  H. Pickett,et al.  The infrared and microwave spectra of ozone for the (0,0,0), (1,0,0), and (0,0,1) states , 1985 .

[21]  B. Carli,et al.  The high-resolution spectrum of ozone between 8 and 150 cm−1 , 1984 .

[22]  B Carli,et al.  Submillimeter high-resolution FT spectrometer for atmospheric studies. , 1984, Applied optics.

[23]  K. Evenson,et al.  Tunable far-infrared spectroscopy , 1984 .

[24]  A. Barbe,et al.  Analysis of the ν2 and 2ν2-ν2 ozone bands from high-resolution infrared atmospheric spectra , 1982 .

[25]  A. Barbe,et al.  Microwave and infrared study of the ν2 state of 16O3 and identification of the (ν3 + ν2)−ν2 band lines at 10 μm , 1978 .

[26]  B. Duterage,et al.  Systematic calculations of rotational spectra of normal and substituted (18O in place of 16O) ozone molecules , 1977 .

[27]  S. Clough,et al.  Millimeter wave spectrum of ozone , 1971 .

[28]  Charles Freed,et al.  ERRATA: STANDING WAVE SATURATION RESONANCES IN THE CO2 10.6‐μ TRANSITIONS OBSERVED IN A LOW‐PRESSURE ROOM‐TEMPERATURE ABSORBER GAS , 1970 .

[29]  Takehiko Tanaka,et al.  Coriolis interaction and anharmonic potential function of ozone from the microwave spectra in the excited vibrational states , 1970 .