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Studying the MLT by a Combined Analysis of SABER/TIMED and Lidar MeasurementsThe SABER instrument on board the TIMED Satellite is a limb scanning infrared radiometer designed to measure temperature and minor constituent vertical profiles and energetics parameters in the mesosphere and lower thermosphere (MLT). The measurements have been performed continuously since January 25, 2002 to provide excellent coverage for both hemispheres. The Leibniz-Institute of Atmospheric Physics (LAP) at Kuehlungsborn, Germany (54N, 12E) operates two lidar instruments, using three different temperature measurement methods, optimized for three altitude ranges. The total altitude range of the lidar installation lies from 1 to 105 km. Another instrument used for intercomparison is the ALOMAR RMR lidar, located at Andoya, Norway (69N, 16E). We have searched the SABER and lidar datasets for coincidental common volume measurements within plus or minus 1 degree in latitude, plus or minus 2 degrees in longitude and approx. 1 hour in time for the sake of (a) comparison of measured temperatures; (b) validation of the models used in SABER data analysis; and (c) extracting new information about MLT parameters. In this work we applied the non-LTE ALI-ARMS code designed to calculate the nonequilibrium radiance in different viewing geometries to the analysis of measurements which satisfied these search criteria. The results of this analysis (a) support the application of higher value of CO2-O quenching rate (6e-12 cubic centimeters per second) by the non-LTE temperature retrievals from the SABER 15 micrometer limb radiance data, and (b) demonstrate the importance of accounting for the vibrational-vibrational energy exchange among the CO2 isotopes for accurate temperature retrievals. Using temperature profiles obtained in lidar measurements as inputs for the retrieval algorithm we also retrieved the nighttime CO2 densities from the SABER 15 micrometer limb radiances and compared them with the model and climatology CO2 data used in the SABER nighttime temperature retrievals.
Document ID
20070016581
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Feofilov, A. G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kutepov, A. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Pesnell, W. D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Goldberg, R. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Zecha, M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gerding, M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Luebken, F. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Fiedler, J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
vonZhan, U.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Russell, J. M., III
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2006
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: 2006 AGU Fall Meeting
Location: San Francisco, CA
Country: United States
Start Date: December 11, 2006
End Date: December 15, 2006
Sponsors: American Geophysical Union, American Geophysical Union
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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