Pressure broadening coefficients of the water vapor lines at 556.936 and 752.033 GHz
Creators
- 1. National Institute of Information and Communications Technology, 4-2-1 Nukui-kita, Koganei, Tokyo 184-8795 (Japan)
- 2. RIKEN, 519-1399 Aoba, Aramaki Aoba, Sendai, Miyagi 980-0845 (Japan)
- 3. Department of Meteorology, Stockholm University, S-106 91 Stockholm (Sweden)
- 4. Department of Radio and Space Science, Chalmers University of Technology, Hoersalsvaegen 11, SE-412 96 Goeteborg (Sweden)
Description
The air induced broadening coefficients of the pure rotational transitions of H2O at 556.936 GHz (110 <- 101), and 752.033 GHz (211 <- 202) were measured by terahertz time-domain spectroscopy. The air broadening coefficient was determined to be 4.012(30)MHzTorr-1 for the 556.936 GHz line and 3.964(40)MHzTorr-1 for the 752.033 GHz line, respectively. The present broadening coefficients for the 556.936 GHz water line are significantly smaller than those of Markov and Krupnov [Measurements of the pressure shift of the 1(10)-1(01) water line at 556.936 GHz produced by mixtures of gases. J Mol Spect 1995:172;211-4] but relatively close to the values of the HITRAN database. The measured data may improve the accuracy of the abundance of water vapor retrieved from spectra obtained by the Odin/SMR satellite instrument. The effect on the satellite retrieval processing is discussed
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jqsrt.2007.06.004Additional details
Identifiers
- DOI
- 10.1016/j.jqsrt.2007.06.004;
- PII
- S0022-4073(07)00169-0;
Publishing Information
- Journal Title
- Journal of Quantitative Spectroscopy and Radiative Transfer
- Journal Volume
- 109
- Journal Issue
- 1
- Journal Page Range
- p. 144-150
- ISSN
- 0022-4073
- CODEN
- JQSRAE
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39094140
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ACCURACY; GHZ RANGE; LINE BROADENING; MARKOV PROCESS; MIXTURES; SPECTRA; SPECTROSCOPY; WATER; WATER VAPOR
- Descriptors DEC
- DISPERSIONS; FLUIDS; FREQUENCY RANGE; GASES; HYDROGEN COMPOUNDS; OXYGEN COMPOUNDS; STOCHASTIC PROCESSES; VAPORS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.