HR: 13:55h
AN: SA33B-02 INVITED     [Abstracts]
TI: Hemispheric Differences and Evolution of the Cold Summer Mesopause Observed by the SABER Experiment on the TIMED Satellite
AU: * Russell, J M
EM: james.russell@hamptonu.edu
AF: Center for Atmospehric Sciences, Hampton University 23 Tyler Street, Hampton, VA 23668 United States
AU: Mlynczak, M G
EM: martin.g.mlynczak@nasa.gov
AF: Atmospheric Sciences Division, NASA Langley Research Center, Hampton, VA 23681 United States
AU: Mertens, C J
EM: christopher.j.mertens@larc.nasa.gov
AF: Atmospheric Sciences Division, NASA Langley Research Center, Hampton, VA 23681 United States
AU: Gordley, L L
EM: larry@gats-inc.com
AF: GATS-Inc., 11864 Cannon Boulevard Suite 101 , Newport News, VA 23606 United States
AU: Picard, R H
EM: richard.picard@hanscom.af.mil
AF: Air Force Laboratory / VSBM, 29 Randolph Road , Hanscom AFB, MA 01731-3010 United States
AU: Winick, J
EM: jeremy.winick@hanscom.af.mil
AF: Air Force Laboratory / VSBM, 29 Randolph Road , Hanscom AFB, MA 01731-3010 United States
AU: Wintersteiner, P
EM: winters@arcon.com
AF: ARCON Corporation, 260 Bear Hill Road , Waltham, MA 02454 United States
AU: Garcia, R
EM: rgarcia@ucar.edu
AF: National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307 United States
AU: Siskind, D E
EM: siskind@uap2.nrl.navy.mil
AF: E.O. Hulbert Center for Space Research, Naval Research Laboratory Code 7641 , Washington, DC 20375 United States
AU: Lopez-Puertas, M
EM: puertas@iaa.es
AF: Instituto de Astrofisica de Andalucia, Apdo. 3004 , Granada, 18080 Spain
AU: Remsberg, E E
EM: e.e.remsberg@larc.nasa.gov
AF: Atmospheric Sciences Division, NASA Langley Research Center, Hampton, VA 23681 United States
AU: Baker, D
EM: spacegrant@cc.usu.edu
AF: Space Dynamics Laboratory, Utah State University 1695 North Research Park Way, , North Logan, UT 84341 United States
AB: The Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) experiment was launched on December 7, 2001 into a 74.1 degree inclined, 625 km orbit onboard the TIMED satellite. The primary science goal of SABER is to achieve major advances in understanding the structure, energetics, chemistry, and dynamics in the atmospheric region extending from 60 to 180 km altitude. SABER has been operating almost continuously since activation using the space flight proven experiment approach of spectral broadband limb emission radiometry applied in 10 selected infrared spectral bands ranging from 1.27 micrometers to 17 micrometers wavelength. Observed limb emission profiles are being processed on the ground to provide vertical profiles with 2 km altitude resolution of key constituents, energetics parameters and temperature. Measurements are made both night and day over the latitude range from 52 degrees to 83 degrees with alternating hemisphere coverage every 60 days. During the time SABER has been operating, there have been two major solar storms in April 2002 and October 2003. The temporal and geographic coverage provided by SABER has provided path finding observations on the atmospheric effects of these events. In addition, the battery of measurements made by SABER has yielded new information on atmospheric energetics effects including radiative cooling due to the 15 micrometer band of CO2 and the persistence of heating due to exothermic chemical reactions. SABER observations have also provided new information on the mesopause latitudinal structure and evolution and have revealed the presence of a two-day wave in the mesopause region that previously was known only through modeling. Further, the data have shed light on the global distribution of the effects of nitric oxide vertical descent into the upper stratosphere and on the variability of atomic oxygen. This paper summarizes the major scientific results from SABER up to now using illustrative examples.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0342 Middle atmosphere--energy deposition
DE: 0350 Pressure, density, and temperature
DE: 0355 Thermosphere--composition and chemistry
DE: 0358 Thermosphere--energy deposition
SC: SPA-Aeronomy [SA]
MN: 2004 AGU Fall Meeting