HR: 14:55h
AN: A32C-05    [PDF]
TI: IN SITU AEROSOL SIZE DISTRIBUTIONS AND RADIATIVE CLOSURE STUDY DURING AEROSOL INTENSIVE OPERATION PERIOD (ARM-IOP)
AU: * Wang, J
EM: jian@bnl.gov
AF: Brookhaven National Lab, Bldg. 815E, 75 Rutherford Drive, Upton, NY 11973-5000 United States
AU: Collins, D R
EM: dcollins@tamu.edu
AF: Texas A&M University, Department of Atmospheric Sciences 3150 TAMU, College Station, TX 77843-3150 United States
AU: Gasparini, R
EM: gasparini@tamu.edu
AF: Texas A&M University, Department of Atmospheric Sciences 3150 TAMU, College Station, TX 77843-3150 United States
AU: Lee, Y
EM: ynlee@bnl.gov
AF: Brookhaven National Lab, Bldg. 815E, 75 Rutherford Drive, Upton, NY 11973-5000 United States
AU: Nunnermacker, L J
EM: lindan@bnl.gov
AF: Brookhaven National Lab, Bldg. 815E, 75 Rutherford Drive, Upton, NY 11973-5000 United States
AU: Ogren, J A
EM: John.A.Ogren@noaa.gov
AF: Climate Monitoring & Diagnostics Laboratory, 325 Broadway R/CMDL, Boulder, CO 80305 United States
AU: Sheridan, P
EM: Patrick.Sheridan@noaa.gov
AF: Climate Monitoring & Diagnostics Laboratory, 325 Broadway R/CMDL, Boulder, CO 80305 United States
AU: Song, Z
AF: Guangzhou Institute of Geochemistry, Guangzhou Institute of Geochemistry, Guangzhou, 510640 China
AB: During the Aerosol Intensive Operation Period of the Department of Energy's Atmospheric Radiation Measurement (ARM) program, the microphysical, chemical, and radiative properties of atmospheric aerosol were characterized in detail at ARM Southern Great Plains (SGP) site in north central Oklahoma in May, 2003. A differential mobility analyzer and an optical particle counter measured aerosol size distribution from 25 nanometers to several microns. Aerosol chemical composition and hygroscopicity were characterized using a Particle Into Liquid Sampler and a high flow tandem differential mobility analyzer system, respectively. Combined with the chemical composition and hygroscopicity measurements, aerosol size distributions measured were used to predict a wide range of aerosol optical properties and compared to the simultaneous direct measurements. This closure study allows one to assess the validity of the physicochemical description of the aerosol when closure is achieved, and also provides insight into potential sources of error when some or all of the comparisons result in disagreement.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0360 Transmission and scattering of radiation
DE: 4801 Aerosols (0305)
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting