HR: 0800h
AN: A51B-0759    [Abstracts]
TI: Study of Water Vapor in the Tropical Tropopause Layer using the JPL Laser Hygrometer and Validation of the Atmospheric Infrared Sounder (AIRS) instrument on the EOS-Aqua satellite.
AU: * Troy, R
EM: Robert.F.Troy@jpl.nasa.gov
AF: University of California at Los Angeles, 405 Hilgard Ave., Westwood, CA 90024 United States
AU: * Troy, R
EM: Robert.F.Troy@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Herman, R
EM: Robert.L.Herman@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Eldering, A
EM: annmarie.eldering@jpl.nasa.gov)
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Bui, P
EM: pbui@mail.arc.nasa.gov
AF: NASA Ames Research Center, Moffett Field, Moffett Field, CA 94035 United States
AU: Thompson, T
EM: tlt@al.noaa.gov
AF: Aeronomy Laboratory, NOAA, Boulder, CO 80307 United States
AB: The Pre-Aura Validation Experiment (Pre-AVE) was a NASA aircraft mission to characterize the composition of the Tropical Tropopause Layer (TTL). In January, 2004, the high-altitude NASA WB-57 aircraft made three flights from San Jose, Costa Rica, into the equatorial TTL. These flights were characterized by unusually cold and dry conditions near the tropical tropopause. We will present in situ water vapor measurements made during these flights made by the JPL Laser Hygrometer (JLH)with the goal being a better understanding how air becomes dehydrated in this region. Temperature measurements from the Atmospheric Infrared Sounder (AIRS) instrument suite on EOS-Aqua will be used to place these in situ measurements in a regional context. Additionally, we report here in situ water vapor measurements made by JLH during the NASA Middle Latitude Cirrus Experiment (MidCiX) flights of 2 May and 6 May 2004. On these flights, the WB-57 aircraft flew spatially and temporally close to the overpass track of the EOS-Aqua satellite. Water vapor measurements taken by the JPL Laser Hygrometer (JLH) on-board the WB-57 will be compared with water retrievals from the AIRS instrument for validation purposes.
DE: 0365 Troposphere--composition and chemistry
DE: 0368 Troposphere--constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting