HR: 16:45h
AN: A44B-04    [Abstracts]
TI: Physical and chemical processing of individual particles acquired during the New England Air Quality Study
AU: * Hudson, P K
EM: paula.k.hudson@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway R/AL6, Boulder, CO 80305-3328 United States
AU: * Hudson, P K
EM: paula.k.hudson@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309 United States
AU: Murphy, D M
EM: murphyd@al.noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway R/AL6, Boulder, CO 80305-3328 United States
AU: Thomson, D S
EM: david.s.thomson@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway R/AL6, Boulder, CO 80305-3328 United States
AU: Thomson, D S
EM: david.s.thomson@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309 United States
AU: Cziczo, D J
EM: daniel.j.cziczo@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway R/AL6, Boulder, CO 80305-3328 United States
AU: Cziczo, D J
EM: daniel.j.cziczo@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309 United States
AU: Thornberry, T D
EM: troy.thornberry@noaa.gov
AF: NOAA Aeronomy Laboratory, 325 Broadway R/AL6, Boulder, CO 80305-3328 United States
AU: Thornberry, T D
EM: troy.thornberry@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309 United States
AB: The Particle Analysis by Laser Mass Spectrometry (PALMS) instrument acquired the mass spectra of over 600,000 individual tropospheric particles while participating in the New England Air Quality Study (NEAQS - summer 2004) on the WP-3D aircraft. The counterflow virtual impactor (CVI) was flown in front of the PALMS instrument allowing for sampling of cloud particles. A majority of the study focused on urban outflow from the Boston and New York areas and power plant plumes in the Ohio River Valley. Additionally, the experiment included several nighttime flights encompassing both sunset and sunrise. These measurements are the first individual particle spectra acquired from an aircraft platform during the night. The flight plans were arranged such that both initial and downwind sampling of urban areas and power plant plumes was achieved. We will examine the compositional changes of the mass spectra to assess the chemical processing with time from a selection of the environments sampled during this field experiment. Cloud and nighttime processing of the particles will also be studied.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0345 Pollution--urban and regional (0305)
DE: 0365 Troposphere--composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting