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Creator:: Taylor, Jonathan P., Glew, Martin D., Coakley, James A., Jr., Tahnk, William R., Platnick, Steven, Hobbs, Peter V., and Ferek, Ronald J.
Abstract:: The influence of anthropogenic aerosols, in the form of ship exhaust effluent, on the microphysics and radiative properties of marine stratocumulus is studied using data gathered from the U.K. Met. Office C-130 and the University of Washington C-131A aircraft during the Monterey Area Ship Track (MAST) experiment in 1994. During...
Resource Type:: Article
Full Text:: S P H E R I C S C I E N C E S q 2000 American Meteorological Society Effects of Aerosols on the

Creator:: Christensen, Matthew W., Coakley, James A., Jr., and Tahnk, William R.
Abstract:: Ship tracks appearing in both the morning and afternoon Moderate Resolution Imaging Spectroradiometer (MODIS) imagery for the Pacific Ocean off the west coast of the United States were used to study the morning-to-afternoon evolution of marine stratus polluted by underlying ships and nearby uncontaminated stratus. Analyzed 925-hPa winds were used...
Resource Type:: Article
Full Text:: . 2105 Platnick, S., 2000: Vertical photon transport in cloud remote sensing problems. J. Geophys

Creator:: Matheson, Mark A., Coakley, James A., and Tahnk, William R.
Abstract:: Advanced Very High Resolution Radiometer (AVHRR) 4-km data collected over the northeastern Atlantic off the coast of the Iberian Peninsula for May to August 1995 were used to investigate the feasibility of empirically deriving estimates of the aerosol indirect radiative forcing. A retrieval scheme was used to derive cloud visible...
Resource Type:: Article
Full Text:: than would be obtained if the pixels were overcast [Han et al., 1994; Platnick et al., 2003

Creator:: Luderer, Gunnar, Coakley, James A. Jr., and Tahnk, William R.
Abstract:: Observations of sunlight reflected from regions of sun glint are used to check the relative calibration of spectral radiances obtained with imaging radiometers. Reflectances at different wavelengths for sun-glint regions are linearly related. Provided that the atmosphere is reasonably transparent at the wavelengths, the aerosol burden is reasonably light, 0.64-μm...
Resource Type:: Article
Full Text:: (Platnick et al. 2000). Here we propose the use of reflected radiances observed when viewing sun glint off

Creator:: Coakley, James A. Jr., Friedman, Michael A., and Tahnk, William R.
Abstract:: Retrievals of cloud properties from satellite imagery often invoke the assumption that the fields of view are overcast when cloud-contaminated, even though a significant fraction are only partially cloud-covered. The overcast assumption leads to biases in the retrieved cloud properties: cloud amounts and droplet effective radii are typically overestimated, while...
Resource Type:: Article

Creator:: Matheson, Mark A., Coakley, James A., and Tahnk, William R.
Abstract:: Advanced Very High Resolution Radiometer (AVHRR) 4-km data were collected over the northeast Atlantic for May–August 1995–1999. Aerosol optical depth at 0.55 μm was retrieved in pixels identified as being cloud-free ocean. In pixels identified as containing clouds from single-layered, low-level cloud systems over oceans, the following cloud properties were...
Resource Type:: Article
Full Text:: observations. Unfortunately, known physical processes limit the validity of this assumption. First, Platnick

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