Effect of Ship-Stack Effluents on Cloud Reflectivity
- 28 August 1987
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 237 (4818) , 1020-1022
- https://doi.org/10.1126/science.237.4818.1020
Abstract
Under stable meteorological conditions the effect of ship-stack exhaust on overlying clouds was detected in daytime satellite images as an enhancement in cloud reflectivity at 3.7 micrometers. The exhaust is a source of cloud-condensation nuclei that increases the number of cloud droplets while reducing droplet size. This reduction in droplet size causes the reflectivity at 3.7 micrometers to be greater than the levels for nearby noncontaminated clouds of similar physical characteristics. The increase in droplet number causes the reflectivity at 0.63 micrometer to be significantly higher for the contaminated clouds despite the likelihood that the exhaust is a source of particles that absorb at visible wavelengths. The effect of aerosols on cloud reflectivity is expected to have a larger influence on the earth's albedo than that due to the direct scattering and absorption of sunlight by the aerosols alone.Keywords
This publication has 19 references indexed in Scilit:
- Oceanic phytoplankton, atmospheric sulphur, cloud albedo and climateNature, 1987
- Towards the Objective Analysis of Clouds from Satellite Imagery DataJournal of Climate and Applied Meteorology, 1984
- Droplet Spectra Observed in Marine Stratus Cloud LayersJournal of the Atmospheric Sciences, 1984
- Satellite measurements of aerosol mass and transportAtmospheric Environment (1967), 1984
- An assessment of the impact of pollution on global cloud albedoTellus B: Chemical and Physical Meteorology, 1984
- Einstein X-ray observations of cataclysmic variablesAdvances In Space Research, 1983
- Cloud modification by man‐made pollutants: Effects of a coal‐fired power plant on cloud drop spectraGeophysical Research Letters, 1981
- CLIMATIC EFFECTS OF ATMOSPHERIC AEROSOLSAnnals of the New York Academy of Sciences, 1980
- Comments on “Anomalous Cloud Lines”Journal of the Atmospheric Sciences, 1968
- Anomalous Cloud LinesJournal of the Atmospheric Sciences, 1966