HR: 13:40h
AN: A43F-01 INVITED     [Abstracts]
TI: Measurements of Sulfuric Acid in the Ohio Valley and New York City from NOAA P3 during ICARTT 2004
AU: * Huey, G
EM: greg.huey@eas.gatech.edu
AF: Georgia Institute of Technology, School of Earth and Atmospheric Sciences, 311 Ferst Dr., Atlanta, GA 30332
AU: Trainer, M
EM: michael.trainer@noaa.gov
AF: NOAA, Aeronomy Laboratory, 325 Broadway, Boulder, CO 80303
AU: Tanner, D
EM: dtanner@eas.gatech.edu
AF: Georgia Institute of Technology, School of Earth and Atmospheric Sciences, 311 Ferst Dr., Atlanta, GA 30332
AU: Crawford, J
EM: james.h.crawford@nasa.gov
AF: NASA, Langley Research Center, Mail Stop 514, Hampton, VA 23681
AU: Chen, G
EM: gao.chen-1@nasa.gov
AF: NASA, Langley Research Center, Mail Stop 514, Hampton, VA 23681
AU: Olson, J
EM: j.r.olson@larc.nasa.gov
AF: NASA, Langley Research Center, Mail Stop 514, Hampton, VA 23681
AU: Ryerson, T
EM: thomas.ryerson@noaa.gov
AF: NOAA, Aeronomy Laboratory, 325 Broadway, Boulder, CO 80303
AU: Brock, C
EM: charles.brock@noaa.gov
AF: NOAA, Aeronomy Laboratory, 325 Broadway, Boulder, CO 80303
AU: Wollney, A
EM: adam.wollney@noaa.gov
AF: NOAA, Aeronomy Laboratory, 325 Broadway, Boulder, CO 80303
AU: Parrish, D
EM: david.parrish@noaa.gov
AF: NOAA, Aeronomy Laboratory, 325 Broadway, Boulder, CO 80303
AU: Holloway, J
EM: john.holloway@noaa.gov
AF: NOAA, Aeronomy Laboratory, 325 Broadway, Boulder, CO 80303
AU: Brown, S
EM: steve.brown@noaa.gov
AF: NOAA, Aeronomy Laboratory, 325 Broadway, Boulder, CO 80303
AU: Dube, W
EM: william.dube@noaa.gov
AF: NOAA, Aeronomy Laboratory, 325 Broadway, Boulder, CO 80303
AB: Fast time response (t = 1s) measurements of sulfuric acid (H2SO4) were made from the NOAA P3 during the ICARTT field mission. This data is analyzed to probe our understanding of both day and night oxidation processes in high sulfur environments. In particular, the photochemistry of the sulfur rich Ohio Valley is investigated by comparing OH values derived from the rapid steady state of the SO2, H2SO4, and aerosol system to those predicted by a photochemical model. This approach allow us to compare very high time resolution OH data in an environment where NOx, hydrocarbons, and SO2 are highly variable. A similar approach is used to look at nighttime OH levels in both the Ohio Valley and New York City regions. In particular, the surprisingly high level of sulfuric acid observed in some NYC plumes will be examined.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0365 Troposphere: composition and chemistry
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005