HR: 1340h
AN: A13C-0951    [Abstracts]
TI: Overview and Motivation for the PUMA 2004 and 2005 Campaigns
AU: Toohey, D W
EM: toohey@colorado.edu
AF: University of Colorado, Program in Atmospheric and Oceanic Sciences, Stadium 255, Boulder, CO 80309-0311 United States
AU: * Ross, M N
EM: martin.n.ross@aero.org
AF: The Aerospace Corporation, Mail Stop M8-615, PO Box 929576, Los Angeles, CA 90009 United States
AU: Avallone, L M
EM: avallone@lasp.colorado.edu
AF: University of Colorado, Laboratory for Atmospheric and Space Physics, 1234 Innovation Drive, Boulder, CO 80309-0590
AU: Baccus, S
EM: shelley.baccus-1@nasa.gov
AF: NASA, Johnson Space Center, 2101 NASA Road 1, Mail Code CC5, Houston, TX 77058 United States
AU: Baumgardner, D G
EM: darrel@servidor.unam.mx
AF: Universidad Nacional Autonoma de Mexico, Centro de Ciencias de al Atmosfera, Cuidad Universitaria, Mexico City, DF 04510 Mexico
AU: Davis, S M
EM: seand@colorado.edu
AF: University of Colorado, Laboratory for Atmospheric and Space Physics, 1234 Innovation Drive, Boulder, CO 80309-0590
AU: Herman, R L
EM: robert.l.herman@jpl.nasa.gov
AF: NASA, Jet Propulsion Laboratory, Mail Code 183-401, 4800 Oak Grove Drive, Pasadena, CA 20771-0001 United States
AU: Kalnajs, L E
EM: lars.kalnajs@colorado.edu
AF: University of Colorado, Laboratory for Atmospheric and Space Physics, 1234 Innovation Drive, Boulder, CO 80309-0590
AU: Kok, G L
EM: glkok@dropletmeasurement.com
AF: Droplet Measurement Technologies, 5710 Flatiron Parkway, Unit B, Boulder, CO 80301-5727 United States
AU: Thompson, T L
EM: Thomas.L.Thompson@noaa.gov
AF: NOAA, Aeronomy Laboratory, R/AL6, 325 Broadway, Boulder, CO 80305-3328 United States
AU: Troy, R F
EM: Robert.F.Troy@jpl.nasa.gov
AF: NASA, Jet Propulsion Laboratory, Mail Code 183-401, 4800 Oak Grove Drive, Pasadena, CA 20771-0001 United States
AB: The influence of rocket engine emissions on stratospheric ozone concentrations is less significant than influences due to other industrial emissions. Nevertheless, since rocket engines provide an easily detected and well characterized perturbation to atmospheric composition and particle population, in situ plume measurements allow a unique experimental approach to the understanding of important atmospheric processes including particle microphysics, oxidation chemistry and chemical kinetics, and sub-kilometer scale transport and mixing. As part of the Plume Ultrafast Measurements Acquisition (PUMA) effort to characterize mixing and constituent partitioning in rocket plumes, in situ measurements of H₂O vapor, ice water content, CO₂, O₃, and 0.1 to 100 μm particles were obtained from the NASA WB-57 aircraft during intercepts of the plumes of an Atlas IIAS rocket launched on 19 May 2004 and the Space Shuttle launched on 26 July 2005, both from Cape Canaveral, FL. Data were collected during multiple plume encounters between 14 and 18 km altitude beginning within 10 minutes after launch of each vehicle. This presentation discusses the rationale behind the selection of the suite of instruments, the strategy employed for sampling, and some important first results. Known H₂O, CO₂, and alumina particle emissions of the rockets' propulsion are used to (1) test our understanding of the role that H₂O may play in the activation of alumina particle surfaces, (2) examine potential changes to ice vapor pressure in response to HNO₃ production on the ice surfaces, (3) establish consistency of the H₂O measurements at various relative humidities in the plume, and (4) characterize the dilution rate of the plume. Additional details and early scientific results will be presented in companion posters by individual PUMA investigators at this session.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0320 Cloud physics and chemistry
DE: 0340 Middle atmosphere: composition and chemistry
DE: 0341 Middle atmosphere: constituent transport and chemistry (3334)
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005