Cloud Reflectance Characteristics in the Presence of Variable Dimethylsulfide (DMS) Sources

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 AVH...

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Bibliographic Details
Main Author: Eisman, Greg A.
Other Authors: NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Format: Text
Language:English
Published: 1989
Subjects:
Atmospheric Physics
*ATMOSPHERIC PHYSICS
CLOUDS
SILICON
IMAGES
STRAITS
REFLECTANCE
PHYTOPLANKTON
SATELLITE PHOTOGRAPHY
ANOMALIES
MEAN
Denmark Strait
Online Access:http://www.dtic.mil/docs/citations/ADA222806
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA222806
Description
Summary: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 microns), channel 3 (3.7 microns) and channel 4 (11.0 microns) 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. Keywords: DMS, Silicon anomaly, Satellite imagery, Atmospheric physics. Original contains color plates: All DTIC/NTIS reproductions will be in black and white.

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