TERRAPUB Journal of Oceanography

Journal of Oceanography, Vol. 54 (No. 5), pp. 553-564, 1998

Spatial Distribution of Primary Production off Sanriku, Northwestern Pacific, during Spring Estimated by Ocean Color and Temperature Scanner (OCTS)

Joji Ishizaka

National Institute for Resources and Environment, Tsukuba, Ibaraki 305-8569, Japan

(Received 31 March, 1998; in revised form 24 May, 1998; accepted 24 June, 1998)

Abstract: An algorithm to estimate primary production by chlorophyll a and sea surface temperature from satellite was evaluated with primary production data from the Ocean Color and Temperature Scanner (OCTS) Sanriku field campaign. The algorithm was applied to the data of OCTS on the Advanced Earth Observing Satellite (ADEOS) off Sanriku, North Pacific, on April 26, 1997. The wavelength-, time-, and depth-resolved model reasonably estimated the chlorophyll a specific primary production of each depth and water column integrated primary production. Although the model parameters were adjusted with the photosynthesis-irradiance curves obtained in the region, the resultant primary production was not significantly different from the global model of Antoine and Morel (1996). This is probably because there is considerable variability in the physiological parameters in this limited area, off Sanriku, and in the limited time, spring. Estimated integrated primary production was well correlated with chlorophyll abut not with temperature. This indicates that the temperature dependence of the primary production was less than the variability caused by chlorophyll aconcentration.

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