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Proceedings Paper

A depth-resolved primary production model for stratified water in the Yellow Sea
Author(s): Sinjae Yoo; Yu-Hwan Ahn; Jisoo Park
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Paper Abstract

Despite some efforts to get better estimation of the primary production of the Yellow Sea, there is still uncertainty in the estimates. Extreme range of the environmental factors through seasons makes the estimation difficult. The high variability in environmental characteristics calls for using satellite data for better estimation of the primary production of the Yellow Sea. To achieve the goal with reasonable accuracy using satellite data, there are many problems to resolve such as retrieval of chlorophyll and diffuse attenuation coefficient of PAR, and estimation of physiological parameters and vertical structure of chlorophyll in water column. Here we analyzed 66 vertical profiles of chlorophyll-a obtained during March-August in 1994-2001 period. Using some relationships among parameters, we attempt to retrieve subsurface chlorophyll profiles only from KPAR (downwelling attenuation coefficient of PAR) and surface chlorophyll-a values. Although uncertainty was high in predicting accurate shape of the profiles (e.g., exact depth of subsurface chlorophyll maximum), fairly accurate estimation of depth-integrated primary production was made given appropriate P-I parameters. We also compared the estimates with those from VGPM (vertically generalized production model). VGPM gave much higher estimates than simulated in-situ depthintegrated primary production. The reason of the discrepancy seems that Popt B from VGPM formulation were higher than estimated in-situ Popt B . Adjusted VGPM gave better results than original VGPM. But the depth-resolved model was better than the adjusted VGPM in terms of fitness and bias.

Paper Details

Date Published: 19 December 2008
PDF: 9 pages
Proc. SPIE 7150, Remote Sensing of Inland, Coastal, and Oceanic Waters, 71500Z (19 December 2008); doi: 10.1117/12.805233
Show Author Affiliations
Sinjae Yoo, Korea Ocean Research and Development Institute (Korea, Republic of)
Yu-Hwan Ahn, Korea Ocean Research and Development Institute (Korea, Republic of)
Jisoo Park, Korea Ocean Research and Development Institute (Korea, Republic of)


Published in SPIE Proceedings Vol. 7150:
Remote Sensing of Inland, Coastal, and Oceanic Waters
Robert J. Frouin; Serge Andrefouet; Hiroshi Kawamura; Mervyn J. Lynch; Delu Pan; Trevor Platt, Editor(s)

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