HR: 0800h
AN: A11C-0067    [Abstracts]
TI: TOMS observations of increases in Asian aerosol in winter from 1979 to 2000
AU: * Massie, S T
EM: massie@ucar.edu
AF: NCAR, PO Box 3000, Boulder, CO 80307 United States
AU: Heymsfield, A J
EM: heyms1@ucar.edu
AF: NCAR, PO Box 3000, Boulder, CO 80307 United States
AU: Torres, O
EM: torres@qhearts.gsfc.nasa.gov
AF: Goddard Space Flight Center, Code 916, Greenbelt, MD 20771 United States
AU: Smith, S
EM: ssmith@pnl.gov
AF: Pacific Northwest National Laboratory, 8400 Baltimore Avenue, Suite 201, College Park, MD 20740 United States
AB: Emission inventories indicate that the largest increases in SO2 emissions have occurred in Asia during the last 20 years. By inference, largest increases in aerosol, produced primarily by the conversion of SO2 to sulfate, should have occurred in Asia during the same time period. Decadal changes in regional aerosol optical depths are calculated by analyzing Total Ozone Mapping Spectrometer (TOMS) vertical aerosol optical depths (converted to 550 nm) from 1979 to 2000 on a 1 degree by 1 degree global grid. Aerosol trends are calculated on a regional basis during winter (November - February) to maximize the anthropogenic component of the aerosol record. Largest increases in aerosol optical depths between 1979 and 2000 are present over the China coastal plain and the Ganges river basin in India.
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