Carbon to chlorophyll-a ratio (CCHL) is formulated based on the assumption that adaptive changes in carbon to chlorophyll occur so as to maximize the specific growth rate for ambient conditions, including solar radiation and water temperature. With the dynamic CCHL, an unsteady two-layered, two-dimensional eutrophication numerical model for density stratified coastal waters has been developed. Saturated light intensity (IS) is determined as weighted average of the light intensity for previous three days to incorporate light acclimation by phytoplankton. The bottom water anoxic condition during summer in Tolo Harbour, Hong Kong is successfully reproduced by the present method. Otherwise, the simulation with a constant CCHL gave a wrong result.
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Research Article|
December 01 1998
Carbon to chlorophyll-a ratio in modeling long-term eutrophication phenomena
Haisheng Jin;
Haisheng Jin
*R & D Center, Nippon Koei Co., Ltd, 2304 Takasaki, Kukizaki-cho, Inashiki-gun, Ibaraki 300, Japan
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Shinji Egashira;
Shinji Egashira
**Faculty of Science and Engineering, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525, Japan
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K. W. Chau
K. W. Chau
***Department of Civil and Structural Engineering, Hong Kong Polytechnic University, Hung Horn, Kowloon, Hong Kong
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Water Sci Technol (1998) 38 (11): 227–235.
Citation
Haisheng Jin, Shinji Egashira, K. W. Chau; Carbon to chlorophyll-a ratio in modeling long-term eutrophication phenomena. Water Sci Technol 1 December 1998; 38 (11): 227–235. doi: https://doi.org/10.2166/wst.1998.0472
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