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Published November 2003 | public
Journal Article

NH_3 and PH_3 line parameters: the 2000 HITRAN update and new results

Abstract

This paper describes the improvements incorporated into the 2000 version of the HITRAN database for ammonia (NH_3), as well as newer results for phosphine (PH_3) not included in HITRAN 2000. For ammonia, the HITRAN 2000 database contains some 29084 ammonia lines, more than double the number of lines in HITRAN 1996. Specifically, the 2000 update involved replacing pure-rotational and infrared transitions from 0 to 3700 cm^(-1) with new calculations for the ^(14)NH_3 isotopomer, whereas in the 4000 to 5000 cm^(-1) region, parameters from the 1996 database were retained. The rotational quantum number range for line positions, intensities and line broadening parameters updated in this new HITRAN version goes up to J=22, 15, 13 and 10 in the 8–1000 μm, 5 μm, 4 μm and 2.8–3.3 μm spectral regions respectively. For phosphine, a new database from 770 to 2156 cm^(-1) available for future updates is described and contrasted with parameters in HITRAN 2000.

Additional Information

© 2003 Elsevier Ltd. Received 30 January 2003; received in revised form 24 March 2003; accepted 27 March 2003. The research at the Jet Propulsion Laboratory (JPL), California Institute of Technology and the University of New York at Stonybrook was performed under contract with the National Aeronautics and Space Administration. The United States Department of Energy supported part of this research and was conducted at the W. R. Riley Environmental Molecular Sciences Laboratory, a national scientic user facility sponsored by the Department of Energy's OOce of Biological and Environmental Research located at the Pacific Northwest National Laboratory (PNNL). PNNL is operated for the United States Department of Energy by Battelle under contract No. DE-AC06-76RLO 1830. One of us (IK) would like to thank the French Programme National de Planétologie (PNP) for funding this research. GAB gratefully acknowledges support from the NASA SARA program.

Additional details

Created:
August 22, 2023
Modified:
October 19, 2023