HR: 16:16h
AN: OS34A-02    [Abstracts]
TI: Radiation Budget Over the Arctic Ocean: Influence of Aerosols and Clouds
AU: * Lubin, D
EM: dlubin@ucsd.edu
AF: Scripps Institution of Oceanography, UCSD, 9500 Gilman Drive, La Jolla, CA 92093-0221 United States
AU: Vogelmann, A
EM: vogelmann@bnl.gov
AF: Brookhaven National Laboratory, Upton, NY, Upton, NY 11973-5000 United States
AB: The 1994 Arctic Ocean Section (AOS) and the 1997-98 Surface Heat Budget of the Arctic (SHEBA) experiments pioneered the deployment of advanced spectroradiometers for studies of clouds and climate, including Fourier Transform Infrared (FTIR) instruments. This type of instrumentation is now operating routinely at the U.S. Department of Energy Atmospheric Radiation Measurement (ARM) North Slope of Alaska (NSA) site, and the multiyear time series of these measurements is now revealing key optical and microphysical properties of the pervasive cloud cover over the Arctic Ocean, as they influence the surface energy budget. The most recent analysis has confirmed an indirect effect of anthropogenic aerosol (Arctic "haze") on the radiation balance, through its influence on the size distribution of liquid and ice particles in clouds. The detection of this aerosol indirect effect in FTIR data, and its implications for the budget of shortwave and longwave radiation at the Arctic Ocean surface, are discussed.
DE: 9315 Arctic region
DE: 3359 Radiative processes
DE: 4207 Arctic and Antarctic oceanography
DE: 0322 Constituent sources and sinks
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting