HR: 0800h
AN: A41A-0009    [Abstracts]
TI: Validation of the TES Forward Model for Passive Remote Sensing
AU: * Shephard, M W
EM: mshephar@aer.com
AF: Atmospheric and Environmental Research (AER), Inc., 131 Hartwell Ave., Lexington, MA 02421 United States
AU: Clough, S A
EM: sclough@aer.com
AF: Atmospheric and Environmental Research (AER), Inc., 131 Hartwell Ave., Lexington, MA 02421 United States
AU: Cady-Pereira, K E
EM: kcadyper@aer.com
AF: Atmospheric and Environmental Research (AER), Inc., 131 Hartwell Ave., Lexington, MA 02421 United States
AB: The new capabilities and improved signal-to-noise ratio of present and future high-resolution passive sensors are placing a greater demand on the accuracy of the atmospheric Forward Model (FM) calculations used in the retrievals of atmospheric constituents. The Tropospheric Emission Spectrometer (TES) forward model utilizes absorption coefficient look-up tables generated by the Line-By-Line Radiative Transfer Model (LBLRTM). Validation of the line-by-line model using upwelling and downwelling infrared radiance measurements from recent S-HIS, AERI, and AIRS measurements show the need for more consistent spectroscopy. For example, AIRS/LBLRTM case studies show an inconsistency between the 2150-2450 cm-1 (v3 N2O; v3 CO2) spectral region and the 680-800 cm-1 (v2 CO2) spectral region, which is routinely used to retrieve atmospheric temperatures. TES is presently performing a simultaneous retrieval of temperature, water vapor, and ozone. In order to improve the residuals (TES - FM) and attain high retrieval accuracy, we need to have spectroscopic consistency: (i) between all bands of a given species; (ii) between all species for a given observation; and (iii) between observations from multiple instruments that use different spectral regions and techniques (i.e. microwave, thermal infrared, solar occultation, etc). Presented are recent model validation results using coincident and co-located S-HIS, TES, and AIRS observations over the Gulf of Mexico during the Aura Validation Experiment (AVE).
UR: http://www.rtweb.aer.com
DE: 0350 Pressure, density, and temperature
DE: 0360 Radiation: transmission and scattering
DE: 0365 Troposphere: composition and chemistry
DE: 1610 Atmosphere (0315, 0325)
DE: 1640 Remote sensing (1855)
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005