HR: 17:30h
AN: A44C-06    [Abstracts]
TI: Using GOES Water Vapor to Define the Tropopause Break and Detect Stratospheric Ozone in the Upper Troposphere
AU: * Moody, J L
EM: moody@virginia.edu
AF: Dept. of Environ. Sciences University of Virginia, 291 McCormick Road, Charlottesville, VA 22943, United States
AU: Felker, S R
EM: sf3t@virginia.edu
AF: Dept. of Environ. Sciences University of Virginia, 291 McCormick Road, Charlottesville, VA 22943, United States
AU: Wimmers, A J
EM: wimmers@ssec.wisc.edu
AF: CIMSS University of Wisconsin, 1225 W. Dayton St., Madison, WI 53706, United States
AU: Avery, M A
EM: Melody.A.Avery@nasa.gov
AF: NASA Langley Research Center, Mail Stop 483, Hampton, VA 23681, United States
AU: Fairlie, T D
EM: t.d.fairlie@larc.nasa.gov
AF: NASA Langley Research Center, Mail Stop 483, Hampton, VA 23681, United States
AU: Browell, E V
EM: Edward.V.Browell@nasa.gov
AF: NASA Langley Research Center, Mail Stop 483, Hampton, VA 23681, United States
AU: Pierce, R B
EM: Brad.Pierce@noaa.gov
AF: Advanced Sat. Prod. Branch NOAA/NESDIS/STAR, 1225 West Dayton St., Madison, WI 53706, United States
AU: Osterman, G
EM: Gregory.Osterman@jpl.nasa.gov
AF: Earth and Space Science Div. NASA Jet Propulsion Lab, 4800 Oak Grove Drive, Pasadena, CA 91109, United States
AU: Bowman, K
EM: Kevin.Bowman@jpl.nasa.gov
AF: Earth and Space Science Div. NASA Jet Propulsion Lab, 4800 Oak Grove Drive, Pasadena, CA 91109, United States
AB: As part of INTEX-B, we report on the value of a satellite based method for estimating the variable location of the tropopause break. Previous work showed tropopause folding, as evidenced in lidar curtains of ozone, was consistently observed in the vicinity of strong gradients in GOES layer average specific humidity in the upper troposphere. Fold openings were found to correspond to the peaks in gradient magnitude, and the folded features penetrated (over 200km on average) beneath the moist edge that was found to define the tropopause break. Here we further this work using flights made by the DC-8 during INTEX-B, a NASA program focused on AURA satellite validation and characterization of Asian outflow of airborne pollutants crossing the North Pacific and reaching North America during the spring of 2006. Presenting data from a two flight case study (May 1, and May 10, 2006), we have clear evidence of folding observed in ozone lidar curtains corresponding with water vapor gradients. In this work, we characterize the multivariate relationship of ozone (measured on the aircraft) with satellite observations of layer average specific humidity in the upper troposphere from GOES, and with layer average potential vorticity in the upper troposphere from the Global Forecast System (GFS) model. We compare these correlations with recent estimates of the multivariate relationship between TES derived ozone in the upper troposphere with the same GOES and GFS dynamical tracers (Felker et al., this meeting). In addition, the location of satellite derived fold-openings will be compared with independent model analyses of ozone and water vapor from the RAQMS model. Our goal is to illustrate the value of relating observed chemical variations to GOES gradients, and then using the broader availability of the GOES imagery to effectively derive empirical maps illustrating the dynamical influence of stratospheric exchange on ozone in the upper troposphere.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
DE: 3362 Stratosphere/troposphere interactions
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting