Phytoplankton distribution as observed from bio-optical drifters and SeaWiFS images in the Bering Sea green belt

Takahiro Iida; Sei-ichi Saitoh; Kohei Mizobata

doi:10.1117/12.466832

8 May 2003 Phytoplankton distribution as observed from bio-optical drifters and SeaWiFS images in the Bering Sea green belt

Takahiro Iida, Sei-ichi Saitoh, Kohei Mizobata

Author Affiliations +

Proceedings Volume 4892, Ocean Remote Sensing and Applications; (2003) https://doi.org/10.1117/12.466832
Event: Third International Asia-Pacific Environmental Remote Sensing Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2002, Hangzhou, China

Abstract

Bering Sea green belt is characterized by high productive region, with interactions of cyclonic and anti-cyclonic eddies. To study temporal and spatial variability of phytoplankton, we deployed two bio-optical drifters in a clockwise eddy in 2001 and 2002. The drifters were equipped with a spectroradiometer to measure upwelling radiance as same as Sea Wide Field-of-view Sensor (SeaWiFS) wavelength. SeaWiFS images were employed to monitor the spatial pattern of chlorophyll-a (chl-a). The drifter also measured sea surface temperature (SST). We compared SST with TOPEX/POSEIDON sea surface anomaly data and analyzed time and scale correlation of SST and phytoplankton distribution in some eddies. In 2001, a clockwise eddy trapped the drifter for 10 days. It represented relatively high chl-a concentration (about 1.0 mg m^-3) and low SST (about 8.5°C). After that it drifted to the Bering Sea slope current region along the shelf edge, and observed among 20 days. In 2002 we deployed a drifter in center of clockwise eddy, it was staying in this eddy for 14 days. There represented relatively low chl-a concentration (about 0.4 mg m^-3) and high SST (about 9.5°C). After that it drifted along Bering slope current similarly. The phytoplankton distribution was deferent from two years in spite of same kind of anti-cyclonic eddy. These deferent might be depending on deference of eddy's life stage.

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Takahiro Iida, Sei-ichi Saitoh, and Kohei Mizobata "Phytoplankton distribution as observed from bio-optical drifters and SeaWiFS images in the Bering Sea green belt", Proc. SPIE 4892, Ocean Remote Sensing and Applications, (8 May 2003); https://doi.org/10.1117/12.466832

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KEYWORDS

Ocean optics

Satellites

Sensors

Lutetium

Temperature metrology

Data archive systems

Data centers

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