HR: 1340h
AN: A33A-0128    [Abstracts]
TI: Line Parameters for the TES Forward Model: Assessment of Their Validity from Preliminary TES Nadir Observations
AU: * Clough, S A
EM: saclough@rcn.com
AF: Atmospheric and Environmental Research, Inc., 131 Hartwell Avenue, Lexington, MA 02421-3126 United States
AU: Shephard, M W
EM: mshephar@rcn.com
AF: Atmospheric and Environmental Research, Inc., 131 Hartwell Avenue, Lexington, MA 02421-3126 United States
AU: Brown, L R
AF: California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA 91109 United States
AU: Goldman, A
AF: University of Denver, Department of Physics, Denver, CO 80208 United States
AU: Rinsland, C P
AF: NASA Langley Research Center, Atmospheric Sciences, Hampton, VA 23681 United States
AB: The basis for the line parameters in the TES forward model is the HITRAN 2000 database with relevant updates available at the HITRAN website [Rothman et al., 2003]. Particularly significant among these updates has been the improvement of the water valor line parameters, e.g. Toth, 2000. A select and limited set of tested modifications have been implemented for TES. These or similar modifications are included in the beta version of HITRAN 2004. No changes in the TES forward model were possible after 1 July 2004 for reasons of forward model stability. This precluded the incorporation of the HITRAN 2004 release [Rothman et al., 2005],which will require a period for proper assessment. Since the retrieval of tropospheric ozone is a key objective of TES, it is of critical importance that the ozone line parameters be as accurate and internally self consistent as possible, especially with respect to line widths for tropospheric retrievals. The ozone line parameters selected for TES are those developed for MIPAS [Wagner et al., 2002]. Selected enhancements for CO and CH4 have been provided by L.R. Brown [Rothman et al., 2005]. The HNO3 line parameters in the current version of the TES database will be replaced by improved parameters before HNO3 profiles retrieved from TES limb spectra are released. Assessment of the line parameters has been accomplished by analyzing validation cases from HIS (High-resolution Interferometer Sounder; U. of Wisc.), AERI (Atmospheric Emitted Radiance Interferometer, U. of Wisc.) and AIRS (Atmospheric InfraRed Sounder, NASA) atmospheric observations. Results from these validations and preliminary comparisons with TES spectral radiances will be presented. Issues with the CO2 line parameters will be discussed. The TES line parameter files are publicly available at http://rtweb.aer.com/ Clough SA, Shephard MW, Mlawer EJ, Delamere JS, Iacono MJ, Cady-Pereira K, Boukabara S, Brown PD. Atmospheric radiative transfer modeling: a summary of the AER codes, J. Quant. Spectrosc. and Radiat Transfer, In Press, Corrected Proof, Available online 28 July 2004. Rothman, L.S., et al., The HITRAN 2004 Molecular Spectroscopic Database, Accepted, J. Quant. Spectrosc. Radiat .Transfer, 2005. Rothman, L.S., et al., The HITRAN Molecular Spectroscopic Database: Edition of 2000 Including Updates through 2001. J. Quant. Spectrosc. Radiat. Transfer, 82: 5-44, 2003. Toth, R.A., Air- and N-2-Broadening parameters of water vapor: 604 to 2271 cm(-1), J. Mol. Spectrosc., 201 (2): 218-243, 2000. Wagner G, Birk M, Schreier F, Flaud JM. Spectroscopic database for ozone in the fundamental spectral regions. J. Geophys. Res., 107, D22, 4626 doi: 10:1029/2001JD000818, 2002.
DE: 3934 Optical, infrared, and Raman spectroscopy
DE: 0360 Transmission and scattering of radiation
DE: 0933 Remote sensing
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting