HR: 0830h
AN: SA41B-0445    [PDF]
TI: Impact of SABER-Observed CO$_{2}$ Concentrations on SABER-CSU Lidar Mesospheric Temperature Comparisons at Fort Collins, Colorado.
AU: * Mertens, C J
EM: c.j.mertens@larc.nasa.gov
AF: NASA Langley Research Center, Atmospheric Sciences Division, 21 Langley Blvd., Hampton, VA 23681-2199 United States
AU: She, C
EM: joeshe@lamar.colostate.edu
AF: Colorado State University, Physics Department, 200 West Lake Street, Fort Collins, CO 80523-1875 United States
AU: Remsberg, E E
EM: e.e.remsberg@larc.nasa.gov
AF: NASA Langley Research Center, Atmospheric Sciences Division, 21 Langley Blvd., Hampton, VA 23681-2199 United States
AU: Russell, J M
EM: james.russell@hamptonu.edu
AF: Hampton University, Center for Atmospheric Sciences, 23 Tyler Street, Hampton, VA 23668 United States
AU: Mlynczak, M G
EM: m.g.mlynczak@larc.nasa.gov
AF: NASA Langley Research Center, Atmospheric Sciences Division, 21 Langley Blvd., Hampton, VA 23681-2199 United States
AU: Gordley, L L
EM: l.l.gordley@gats-inc.com
AF: G \& A Technical Software, Inc., 11864 Canon Blvd., Suite 101, Newport News, VA 23606 United States
AU: Lopez-Puertas, M
EM: puertas@iaa.es
AF: Instituto de Astrofisica de Andalucia, Apdo. 3004, Granada, 18080 Spain
AU: Picard, R H
EM: richard.picard@hanscom.af.mil
AF: Air Force Research Laboratories, Hanscom Air Force Base, Hanscom, MA 01731-3010 United States
AU: Winick, J
EM: jeremy.winick@hanscom.af.mil
AF: Air Force Research Laboratories, Hanscom Air Force Base, Hanscom, MA 01731-3010 United States
AU: Wintersteiner, P P
EM: winters@arcon.com
AF: Arcon Corporation, 260 Bear Hill Road, Waltham, MA 02451 United States
AB: The Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) experiment was launched onboard the TIMED satellite in December 2001. Mesospheric and lower thermospheric kinetic temperature (Tk) and CO$_{2}$ volume mixing ratio (vmr) are simultaneously retrieved during daytime from measurements of broadband Earth limb emission in the SABER CO$_{2}$ 15 um and CO$_{2}$ 4.3 um channels, respectively. At night only Tk is retrieved from SABER measurements in the CO$_{2}$ 15 um channel. The Tk/CO$_{2}$ retrieval algorithm includes non-local thermodynamic equilibrium processes in the inversion scheme. The CO$_{2}$ concentrations needed in the nighttime Tk retrievals are taken from the TIME-GCM climatology. The quality of the daytime-retrieved CO$_{2}$ profiles is assessed by comparing nighttime SABER Tk profiles with nighttime Tk observations taken from sodium lidar measurements at Fort Collins, Colorado. There are a number of days in 2002 where SABER measurements were taken over Fort Collins during daytime and nighttime hours on the same day. For the nighttime overpasses, two SABER Tk retrievals are performed for each coincidence scan: one retrieval using the TIME-GCM CO$_{2}$ concentration and the other retrieval using the SABER-retrieved CO$_{2}$ concentration from the corresponding daytime scan. If the SABER-lidar nighttime Tk comparisons are improved by using the SABER-retrieved CO$_{2}$ profiles in the Tk retrieval, we conclude that SABER has improved our knowledge of mid-latitude CO$_{2}$ abundance.
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0350 Pressure, density, and temperature
DE: 0360 Transmission and scattering of radiation
DE: 0394 Instruments and techniques
DE: 3360 Remote sensing
SC: SPA - Aeronomy [SA]
MN: 2003 Fall Meeting