HR: 08:45h
AN: H31A-04    [PDF]
TI: Tropospheric $O_{3}$ Retrievals from the Baltimore Bomem Atmospheric Emitted Radiance Interferometer (BBAERI) during AIRS Validation
AU: * Lightner, K J
EM: klight1@gl.umbc.edu
AF: University of Maryland Baltimore County, 1000 Hilltop Circle, Baltimore, Md 21250 United States
AU: McMillan, W W
AF: University of Maryland Baltimore County, 1000 Hilltop Circle, Baltimore, Md 21250 United States
AU: Newchurch, M J
EM: mike@nsstc.uah.edu
AF: University of Alabama in Huntsville, 320 Sparkman Drive, Huntsville, Al 35805 United States
AU: Hintsa, E J
EM: ehintsa@whoi.edu
AF: Woods Hole Oceanographic Institution, 266 Woods Hole Drive, Woods Hole, Ma 02543
AB: We present the first results of an algorithm to retrieve tropospheric ozone abundances from the 1000 to 1100 $cm^{-1}$ region of infrared spectra. This retrieval algorithm will be used to monitor tropospheric ozone levels and, in conjunction with meteorological observations, to determine the origins of the observed ozone. Our instrument, BBAERI, was built by ABB Bomem of Quebec, Canada and delivered to the University of Maryland, Baltimore County (UMBC) in March 2000. BBAERI's maximum optical path difference of 1 cm yields an apodized resolution of 1 $cm^{-1}$. Strong emission/absorption in the 10 $\mu$m region of the infrared ( 1000-1100 $cm^{-1}$ ) results from the $\nu_{3}$ vibrational rotational transitions in the ozone molecule and gives rise to the spectral feature of interest. Spectral line spacing and pressure broadening do not allow an instrument of this resolution to resolve any of the lines, just the band shape. The retrieval consists of a statistical regression using eigenvector decomposition to constrain the solution. Regression coefficients are calculated from 2730 ozonesonde profiles varying in latitude from $25^{o}$S to $65^{o}$N. The regression is followed by a physical retrieval utilizing the K Compressed Atmospheric Radiative Transfer Algorithm (KCARTA) developed by Dr.L.Larrabee Strow and his group at UMBC. Validation results will be presented from field measurements taken in Huntsville Alabama November 2002 and the AIRS BBAERI Ocean Validation Experiment (ABOVE) at the Chesapeake Lighthouse June 2003. Ozonesondes used for validation were flown by Dr.Mike Newchurch, Mohammed Ayoub and Jing Song from The University of Alabama Huntsville. Additional ground ozone measurements were supplied by Dr.Eric Hintsa from Woods Hole Oceanographic Institution (WHOI).
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0345 Pollution--urban and regional (0305)
DE: 0394 Instruments and techniques
DE: 1894 Instruments and techniques
SC: Hydrology [H]
MN: 2003 Fall Meeting