HR: 1340h
AN: A43B-0097    [Abstracts]
TI: Validation of OMPS Ozone Profile Data with Expanded Dataset from Brewer and Automated Dobson Network.
AU: * Petropavlovskikh, I
EM: irina.petro@noaa.ogv
AF: University of Colorado, CIRES, NOAA/ERSL/GMD, 325 Broadway, Boulder, CO 80305 United States
AU: Weatherhead, E
EM: Betsy.Weatherhead@noaa.gov
AF: University of Colorado, CIRES, NOAA/ERSL/GMD, 325 Broadway, Boulder, CO 80305 United States
AU: Cede, A
EM: cede@chescat.gsfc.nasa.gov
AF: Science Systems and Applications, Inc., Science Systems and Applications, Inc., Lanham, MD 20706 United States
AU: Oltmans, S J
EM: Samuel.J.Oltmans@noaa.gov
AF: NOAA/ERSL/GMD, NOAA/ERSL/GMD, 325 Broadway, Boulder, CO 80305 United States
AU: Kireev, S
EM: Stanislav.Kireev@hamptonu.edu
AF: CREST, Hampton University, Center for Atmospheric Sciences, 23 Tyler Street, Hampton, VA 23668 United States
AU: Maillard, E
EM: Eliane.Maillard@meteoswiss.ch
AF: MeteoSwiss, Aerological Station, Box 316, Payerne, CH-1530 Switzerland
AU: Bhartia, P K
EM: Pawan.K.Bhartia@nasa.gov
AF: NASA/GSFC, Goddard Space Flight Center, Mail Code 916, Greenbelt, MD 20723 United States
AU: Flynn, L E
EM: Lawrence.E.Flynn@noaa.gov
AF: NOAA/NESDIS, NOAA/NESDIS, 5200 Auth Road, Camp Springs, MD 20746 United States
AB: The first NPOESS satellite is scheduled to be launched in 2010 and will carry the Ozone Mapping and Profiler Suite (OMPS) instruments for ozone monitoring. Prior this, the OMPS instruments and algorithms will be tested by flight on the NPOESS/NPP satellite, scheduled for launch in 2008. Pre-launch planning for validation, post launch data validation and verification of the nadir and limb profile algorithm are key components for insuring that the NPOESS will produce a high quality, reliable ozone profile data set. The heritage of satellite instrument validation (TOMS, SBUV, GOME, SCIAMACHY, SAGE, HALOE, ATMOS, etc) has always relied upon surface-based observations. While the global coverage of satellite observations is appealing for validating another satellite, there is no substitute for the hard reference point of a ground-based system such as the Dobson or Brewer network, whose instruments are routinely calibrated and intercompared to standard references. The standard solar occultation instruments, SAGE II and HALOE are well beyond their planned lifetimes and might be inoperative during the OMPS period. The Umkehr network has been one of the key data sets for stratospheric ozone trend calculations and has earned its place as a benchmark network for stratospheric ozone profile observations. The normalization of measurements at different solar zenith angle (SZAs) to the measurement at the smallest SZA cancels out many calibration parameters, including the extra-terrestrial solar flux and instrumental constant, thus providing a "self-calibrating" technique in the same manner relied upon by the occultation sensors on satellites. Moreover, the ground-based Umkehr measurement is the only technique that provides data with the same altitude resolution and in the same units (DU) as do the UV-nadir instruments (SBUV-2, GOME-2, OMPS-nadir), i.e., as ozone amount in pressure layers, whereas, occultation instruments measure ozone density with height. A new Umkehr algorithm will enhance the information content of the retrieved profiles and extend the applicability of the technique. Automated Dobson and Brewer instruments offer the potential for greatly expanded network of Umkehr observations once the new algorithm is applied. We will discuss the new algorithm development and present results of its performance in comparisons of retrievals between co-located Brewer and Dobson ozone profiles measured at Arosa station in Switzerland.
DE: 0340 Middle atmosphere: composition and chemistry
DE: 3305 Climate change and variability (1616, 1635, 3309, 4215, 4513)
DE: 3359 Radiative processes
DE: 3360 Remote sensing
DE: 3394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005