Swathi, P. S. ; Sharada, M. K. ; Yajnik, K. S. (2000) A coupled physical-biological-chemical model for the Indian Ocean Journal of Earth System Science, 109 (4). pp. 503-538. ISSN 0253-4126
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Official URL: http://www.ias.ac.in/jess/dec2000/E1419.pdf
Related URL: http://dx.doi.org/10.1007/BF02708337
Abstract
A coupled physical-biological-chemical model has been developed at C-MMACS. for studying the time-variation of primary productivity and air-sea carbon-dioxide exchange in the Indian Ocean. The physical model is based on the Modular Ocean Model, Version 2 (MOM2) and the biological model describes the nonlinear dynamics of a 7-component marine ecosystem. The chemical model includes dynamical equation for the evolution of dissolved inorganic carbon and total alkalinity. The interaction between the biological and chemical model is through the Redfield ratio. The partial pressure of carbon dioxide (pCO2) of the surface layer is obtained from the chemical equilibrium equations of Penget al 1987. Transfer coefficients for air-sea exchange of CO2 are computed dynamically based on the wind speeds. The coupled model reproduces the high productivity observed in the Arabian Sea off the Somali and Omani coasts during the Southwest (SW) monsoon. The entire Arabian Sea is an outgassing region for CO2 in spite of high productivity with transfer rates as high as 80 m-mol C/m2 /day during SW monsoon near the Somali Coast on account of strong winds.
Item Type: | Article |
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Source: | Copyright of this article belongs to Indian Academy of Sciences. |
Keywords: | Coupled ocean model; Indian ocean; Carbon flux; Marine preductivity; JGOFS |
ID Code: | 60659 |
Deposited On: | 09 Sep 2011 09:45 |
Last Modified: | 18 May 2016 10:41 |
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