Optical properties of marine stratocumulus clouds modified by ship track effluentsResults are presented from multispectral radiation measurements made within a marine stratocumulus cloud layer modified by ship-track effluents. The measurements showed that, compared with nearby noncontaminated clouds not affected by pollution, the upwelling intensity field of the modified stratocumulus clouds increased at a nonabsorbing wavelength in the visible region and decreased in the NIR, where absorption by liquid water is significant. The observations are consistent with an increased optical thickness, a reduced effective radius of the cloud droplets, and a reduced absorption in the contaminated cloud layer compared to a noncontaminated cloud.
Document ID
19920031384
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
King, Michael D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Nakajima, Teruyuki (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Radke, Lawrence F. (Washington, University Seattle, United States)