HR: 0830h
AN: A41D-0722    [PDF]
TI: The Climatology of the High-Latitude Stratospheric Aerosol Measured by POAM From 1993 to 2003
AU: * Steele, H M
EM: cox@atmos.ucla.edu
AF: Dept. of Geography California State University, Northridge, 18111 Nordhoff St, Northridge, CA 91330 United States
AU: Lumpe, J D
EM: lumpe@cpi.com
AF: Computational Physics, Inc., 8001 Braddock Road, Ste 210, Springfield, VA 22151 United States
AU: Bevilacqua, R
EM: bevilacqua@nrl.navy.mil
AF: Naval Research Laboratory, Code 7220, Washington, DC 20375 United States
AU: Randall, C E
EM: randall@lasp.colorado.edu
AF: Laboratory for Atmospheric and Space Physics, UCB 392 University of Colorado, Boulder, CO 80309 United States
AB: We present a climatology of the high-latitude stratospheric aerosol derived from the multi-wavelength extinction data of the POAM II and III instruments from 1993 to 2003. Stratospheric aerosols north of 54 N and south of 63 S were continually monitored by POAM II between September 1993 and November 1996. These data clearly show the decay of the volcanic aerosol from the Pinatubo eruption which was still evident when the spacecraft ceased operation at the end of 1996. POAM III was launched into a similar orbit in March 1998 and has monitored the seasonal variation in the aerosol layer since its recovery to background levels. Extinction data from these two instruments at six wavelengths from the ultraviolet to near-infrared are combined through principal component analysis to yield total aerosol surface area, volume and effective radius. The temporal and spatial evolution of these physical parameters, employed in chemistry and climate models, are presented and analyzed.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0341 Middle atmosphere--constituent transport and chemistry (3334)
DE: 3360 Remote sensing
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting