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[D-3.1 Study on Marine Primary Productivity by means of Satellite Ocean Color Data Mapping and in situ Monitoring]

[Contact Person]

Satsuki Matsumura
Division Director, Oceanography and Southern Ocean Living
Resources Division National Research Institute of Far Seas Fisheries
5-7-1, Odido, Shimizu-shi, Shizuoka 424 Japan
TEL +81-543-34-0715, FAX +81-543-35-9642 S.Matsumura/OMNET

[Total Budget for FY1990-1992]

62,436,000 Yen

[Abstract]

　The photosynthesis by chlorophyll a is one of the most important factors for understanding carbon cycles and flux in the ocean. There are many steps to determine chlorophyll a concentration and primary productivity by satellite data. We advanced the study with dividing into four main classes: underwater algorithm, primary productivity experiments, atmospheric correction, disposal of Information. Primary productivity measurement in equatorial waters was done as a references for coastal waters. And also time continuous underwater spectro optical measurement at coastal water has been done using by buoy system for better understandng of satellite data. It could be good sea trouth data for satellite observations in near future. With the use of our modified data processing algorithm that takes account for Asian dust aerosol, we processed a CZCS data set of 4,129 scenes that covers the Northwestern Pacific to form monthly and seasonally averaged composite images. The results were then remapped into 5 areas in Japanese marginal seas. The final product of about 5,000 Images will be distributed in CD-ROM format.

[Key Words]

Primary Productivity, Underwater Optics, Atomospheric Correction, Chlorophyll Map, Image Composition