Accurate frequency measurements for H2O and O-16(3) in the 119-cm(-1) OH atmospheric window

Year: 1997

Authors: De Natale P., Lorini L., Inguscio M., Nolt I.G., Park J.H., Di Lonardo G., Fusina L. , Ade P.A.R., Murray A.G.

Autors Affiliation: Dip. di Fisica Università di Firenze and European Laboratory for Non-Linear Spectroscopy, and INFM, Largo E. Fermi 2, Firenze, Italy;
NASA Langley Research Center, Mail Stop 472, Hampton, Virginia 23681-0001;
Dipartimento di Chimica Fisica e Inorganica, Universita di Bologna, Viale Risorgimento 4,40136 Bologna, Italy;
Department of Physics, Queen Mary and Westfield College, Mile End Road, London E1 4NS, U.K.;
Istituto Nazionale di Ottica Sezione di Napoli, Mostra d’Oltremare Pad. 19, I-80125 Napoli, Italy

Abstract: We report frequency measurements for relatively weak H2O and O-16(3) rotational transitions in the ground state and in the v(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 H2O 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 O-16(3) data, and improved values are reported for the frequencies of the H2O 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. (C) 1997 Optical Society of America.

Journal/Review: APPLIED OPTICS

Volume: 36 (33)      Pages from: 8526  to: 8532

KeyWords: Atmospheric molecules; Far-infrared spectroscopy; Atmospheric chemistry; Ozone; Spectroscopy; Water
DOI: 10.1364/AO.36.008526

Citations: 16
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