HR: 14:45h
AN: A23D-04    [Abstracts]
TI: High Resolution Measurements of the Tropical Tropopause Region by HIRDLS
AU: * Gille, J
EM: gille@ucar.edu
AF: Center for Limb Atmospheric Sounding, University of Colorado at Boulder P.O. Box 3000, Boulder, CO 80307, United States
AU: * Gille, J
EM: gille@ucar.edu
AF: NCAR, P.O. Box 3000, Boulder, CO 80307-3000, United States
AU: Barnett, J
EM: j.barnett1@physics.ox.ac.uk
AF: Dept. of Atmospheric, Oceanic & Planetary Physics, Oxford University - Clarendon Laboratory Parks Road, Oxford, OX1 3PU, United Kingdom
AU: Eden, T
EM: teden@eos.ucar.edu
AF: NCAR, P.O. Box 3000, Boulder, CO 80307-3000, United States
AU: Halvorson, C
EM: halvor@ucar.edu
AF: NCAR, P.O. Box 3000, Boulder, CO 80307-3000, United States
AU: Hartsough, C
EM: craigh@ucar.edu
AF: NCAR, P.O. Box 3000, Boulder, CO 80307-3000, United States
AU: Kinnison, D
EM: dkin@ucar.edu
AF: NCAR, P.O. Box 3000, Boulder, CO 80307-3000, United States
AU: Lee, H
EM: halee@ucar.edu
AF: NCAR, P.O. Box 3000, Boulder, CO 80307-3000, United States
AU: Nardi, B
EM: nardi@ucar.edu
AF: NCAR, P.O. Box 3000, Boulder, CO 80307-3000, United States
AU: Randall, C
EM: randall@lasp.colorado.edu
AF: LASP & Dept of Atmospheric and Oceanic Sciences, University of Colorado, 392 UCB, Boulder, CO 80309-0392, United States
AB: The High Resolution Dynamics Limb Sounder (HIRDLS) was launched on the Aura satellite in July 2004. It was designed to make measurements of temperature, cloud particles, ozone, water vapor, and 8 other species with higher vertical resolution than previously possible. An unforeseen event occurred during launch that created an obstruction over most of the optical entrance aperture, creating a number of problems. After many months of work, a correction scheme has been developed that will permit much of the original capability to be recovered. The results of initial data validation will be presented, showing that the atmospheric horizontal variations are captured very well. The agreement with correlative data is good, and provides evidence that the vertical resolution of the data is ~1 km. These corrected data show the vertical structure of water vapor, high cirrus and ozone, and their relationship to the temperature structure in the region of the tropical tropopause. The presentation will focus on the response of these quantities to tropical disturbances, especially the Asian Monsoon circulation.
DE: 0340 Middle atmosphere: composition and chemistry
DE: 0341 Middle atmosphere: constituent transport and chemistry (3334)
DE: 3360 Remote sensing
DE: 3362 Stratosphere/troposphere interactions
SC: Atmospheric Sciences [A]
MN: 2007 Joint Assembly