HR: 0800h
AN: A31B-0838    [Abstracts]
TI: A new approach for the measurement of the effect of aerosols on the profile cloud droplet effective radii
AU: * Fernandez-Borda, R
EM: rfborda@ssedmail.gsfc.nasa.gov
AF: Catholic University of America, 620 Michigan Ave., N.E., Washington DC, 20064 United States
AU: Martins, V J
EM: martins@climate.gsfc.nasa.gov
AF: JCET/ University of Maryland Baltimore Couty, 5523 Research Park Drive, Baltimore, MD 21228 United States
AU: Marshak, A
EM: marshak@climate.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, code 613.2, Greenbelt, MD 20771 United States
AU: Kaufman, Y
EM: kaufman@climate.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, code 613.2, Greenbelt, MD 20771 United States
AU: Zubko, V
EM: zubko137@comcast.net
AF: GEST/University of Maryland Baltimore County, 5523 Research Park Drive, Baltimore, MD 21228 United States
AU: Correia, A
EM: acorreia@ctpec.inpe.br
AF: CPTEC/INPE, Brazil, Sao Pablo, 00000 Brazil
AU: Artaxo, P
EM: artaxo@if.usp.br
AF: University of Sao Pablo, Brazil, Sao Pablo, 99999 Brazil
AB: Aerosol particles have strong effects in the cloud structure, microphysics and thermodynamics. The measurement of the cloud microphysical profile in parallel with the characterization of the aerosol field can provide key information on the interaction between the particles and the clouds. The Cloud Scanner System gives a new remote sensing approach, which can provide the droplet effective radius (Reff) and thermodynamic phase as a function of the brightness temperature or cloud height. The cloud scanner instrument has been used from aircraft and from the ground to monitor these vertical profiles, and is been currently proposed as a satellite concept. Here we present a brief technical description of this instrument, as well as the first validation cases retrieving the Reff from the CLAIM campaign in Brazil (January 2005) using 3-D look up tables produced with the SHDOM 3D radiative transfer code. The interpretation of these height/temperature resolved Reff diagrams allows for a very unique characterization of the cloud microphysical structure and its response to the aerosol field.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0321 Cloud/radiation interaction
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005