Physics
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.1171n&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 7, p. 1171-1174
Physics
99
Atmospheric Composition And Structure: Aerosols And Particles, Atmospheric Composition And Structure: Cloud Physics And Chemistry, Atmospheric Composition And Structure: Transmission And Scattering Of Radiation, Global Change: Remote Sensing
Scientific paper
The column aerosol particle number and low cloud microphysical parameters derived from AVHRR remote sensing are compared over ocean for four months in 1990. There is a positive correlation between cloud optical thickness and aerosol number concentration, whereas the effective particle radius has a negative correlation with aerosol number. The cloud liquid water path (LWP), on the other hand, tends to be constant with no large dependence on aerosol number. This result contrasts with results from recent model simulations which imply that there is a strong positive feedback between LWP and aerosol number concentration. Estimates for indirect forcing over oceans derived from the satellite data/model comparison range from -0.7 to -1.7 Wm-2.
Higurashi Akiko
Kawamoto Kazuaki
Nakajima Teruyuki
Penner Joyce E.
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