2003 Fiscal Year Final Research Report Summary
Monitoring of marine primary production in the marginal seas
| Project/Area Number |
11205207
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
FURUYA Ken The University of Tokyo, Graduate School of Agricultural and Life Sciences, Professor, 大学院・農学生命科学研究科, 教授 (30143548)
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| Co-Investigator(Kenkyū-buntansha) |
SAINO Toshiro Nagoya University, Hydrospheric Atomospheric Research Center, Professor, 地球水循環研究センター, 教授 (60126068)
SAITOH Seiichi Hokkaido University, Graduate School of Fisheries Sciences, Professor, 大学院・水産科学研究科, 教授 (70250503)
TAKAHASHI Masayuki TAKAHASHI,Masayuki, 大学院・総合文化研究科, 教授 (50111357)
ISHIZAKA Joji Nagasaki University, Faculty of Fisheries, Professor, 水産学部, 教授 (40304969)
ISHIMARU Takashi Tokyo University of Fishcries, Faculty of Fisheries, Professor, 水産学部, 教授 (90114371)
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| Project Period (FY) |
1999 – 2002
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| Keywords | primary production / Phytoplankton / Northeast Asian marginal seas / ocean color / GOOS / NEAR-GOOS / monitoring of marine environment |
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| Research Abstract |
Bio-optical monitoring of primary production using in situ sensors and ocean color remote sensing was examined for Northeast Asian marginal seas of the Pacific Ocean. In situ monitoring was conducted by the continuous measurement of natural fluorescence with which improved algorithm resulted in a satisfactory accordance with carbon uptake. Regional algorithms for estimating primary production from remotely sensed information were examined with published algorithms using bio-optical parameters obtained during cruised conducted between 1999 and 2000 in Japan Sea and the East China Sea. Pbopt and chlorophyll a were found to be most critical parameters in both areas. While Kameda-Ishizaka algorithm yielded best performance in the validation, estimates varied in the factor of 2, on average, posing requirement of further improvement. Time series observations of chlorophyll a and primary production from 1996 to 2002 using data obtained by both OCTS and Sea WiFS revealed year-to-year variations in both timing and magnitude of spring bloom in Japan Sea. In contrast to Japan Sea, case 2 water issue was distinct throughout the year in the East China Sea.
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