Cloud reflectance characteristics in the presence of variable dimethylsulfide (DMS) sources.
Eisman, Greg A.
Durkee, Philip A.
Wash, Carlyle H.
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Oceanic dimethylsulfide (DMS) sources are inferred from silicon anomaly information in the Denmark Strait during June 1984. This June 1984 "bloom" of the phytoplankton species Phaecystes pouchetti, a known DMS producer, is compared to the "non-bloom" of June 1982 using NOAA-7 AVHRR data from channel 1 (.63 μm), channel 3 (3.7 μm) and channel 4 (11.0 μm) wavelengths. After examining the AVHRR color-enhanced data for each individual day, composites for June 1982 and June 1984 are created for channel 1 and channel 3 wavelengths. These composites eliminated day-to-day differences in reflectances by averaging data which were neither cloud-free nor high-cloud contaminated. Based on these composites, evidence is presented which suggests that a correlation exists between inferred-DMS source regions and higher reflectance values at channel 3 wavelengths.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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