HR: 11:50h
AN: A41F-07    [PDF]
TI: Nighttime NOx Loss during NEAQS
AU: * Brown, S S
EM: sbrown@al.noaa.gov
AF: NOAA Aeronomy Lab, R/AL2 325 Broadway, Boulder, CO 80305 United States
AU: * Brown, S S
EM: sbrown@al.noaa.gov
AF: Cooperative Institute for Research in the Environmental Sciences, University of Colorado, Boulder, CO 80309 United States
AU: Dibb, J E
AF: Institute for the Study of Earth, Oceans and Space, University of New Hampshire, Durham, NH 03824 United States
AU: Aldener, M
AF: NOAA Aeronomy Lab, R/AL2 325 Broadway, Boulder, CO 80305 United States
AU: Aldener, M
AF: Cooperative Institute for Research in the Environmental Sciences, University of Colorado, Boulder, CO 80309 United States
AU: Stark, H
AF: NOAA Aeronomy Lab, R/AL2 325 Broadway, Boulder, CO 80305 United States
AU: Stark, H
AF: Cooperative Institute for Research in the Environmental Sciences, University of Colorado, Boulder, CO 80309 United States
AU: Vozella, M
AF: Institute for the Study of Earth, Oceans and Space, University of New Hampshire, Durham, NH 03824 United States
AU: Whitlow, S
AF: Institute for the Study of Earth, Oceans and Space, University of New Hampshire, Durham, NH 03824 United States
AU: Williams, E J
AF: NOAA Aeronomy Lab, R/AL2 325 Broadway, Boulder, CO 80305 United States
AU: Lerner, B M
AF: NOAA Aeronomy Lab, R/AL2 325 Broadway, Boulder, CO 80305 United States
AU: Lerner, B M
AF: Cooperative Institute for Research in the Environmental Sciences, University of Colorado, Boulder, CO 80309 United States
AU: Jakoubek, R
AF: NOAA Aeronomy Lab, R/AL2 325 Broadway, Boulder, CO 80305 United States
AU: Ryerson, T R
AF: NOAA Aeronomy Lab, R/AL2 325 Broadway, Boulder, CO 80305 United States
AU: Middlebrook, A M
AF: NOAA Aeronomy Lab, R/AL2 325 Broadway, Boulder, CO 80305 United States
AU: Quinn, P
AF: NOAA Pacific Marine Environmental Laboratory, R/PMEL 7600 Sandpoint Way, Seattle, WA 98115 United States
AU: Bates, T S
AF: NOAA Pacific Marine Environmental Laboratory, R/PMEL 7600 Sandpoint Way, Seattle, WA 98115 United States
AU: Meagher, J F
AF: NOAA Aeronomy Lab, R/AL2 325 Broadway, Boulder, CO 80305 United States
AU: Ravishankara, A R
AF: NOAA Aeronomy Lab, R/AL2 325 Broadway, Boulder, CO 80305 United States
AU: Ravishankara, A R
AF: Cooperative Institute for Research in the Environmental Sciences, University of Colorado, Boulder, CO 80309 United States
AB: Direct, in situ observations of NO3, N2O5 and HNO3 in the marine boundary layer during NEAQS have provided new insights into the nocturnal budget for NOx. Comparison between the behavior of these compounds in the NEAQS data set and from a continental site in Boulder, CO shows that N2O5 can act as both a reservoir for NOx and an efficient sink that converts it to nitric acid. The total removal of NOx pollution will depend strongly on the efficiency of these processes. Diurnal averages of NO3, N2O5 and HNO3 during NEAQS show that the nitric acid production during the night is comparable to that during the day, and that N2O5 hydrolysis reactions produce a significant quantity of gas phase nitric acid.
DE: 0312 Air/sea constituent fluxes (3339, 4504)
DE: 0317 Chemical kinetic and photochemical properties
DE: 0322 Constituent sources and sinks
DE: 0345 Pollution--urban and regional (0305)
DE: 0365 Troposphere--composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting