A numerical investigation of eddy-induced chlorophyll bloom in the southeastern tropical Indian Ocean during Indian Ocean Dipole—2006

Iskandar, Iskhaq and Sasaki, Hideharu and Sasai, Yoshikazu and Masumoto, Yukio and Mizuno, Keisuke (2010) A numerical investigation of eddy-induced chlorophyll bloom in the southeastern tropical Indian Ocean during Indian Ocean Dipole—2006. Ocean Dynamics, 60 (3). pp. 731-742. ISSN 731-742

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Abstract

An eddy-resolving coupled physical?biological model is used to study the effect of cyclonic eddy in enhancing offshore chlorophyll-a (Chl-a) bloom in the southeastern tropical Indian Ocean during boreal summer?fall 2006. The results demonstrate that the offshore Chl-a blooms are markedly coincident with the high eddy kinetic energy. Moreover, the vertical variations in Chl-a, nitrate, temperature, and mixed-layer depth (MLD) strongly imply that the cyclonic eddies induce surface Chl-a bloom through the injection of nutrient-rich water into the upper layer. Interestingly, we found that the surface bloom only occurs when the deep Chl-a maximum is located within the MLD. On the other hand, the response of subsurface Chl-a to the eddy pumping is remarkable, although it is hardly observable at the surface.

Item Type: Article
Additional Information: From the issue entitled "Special Issue Collection, OGCM for the Earth Simulator (OFES), The 1st international Conference, Yokohama, Japan, August 2008"
Uncontrolled Keywords: Chlorophyll-a - Upwelling - Coupled physical?biological model - Indian Ocean Dipole - Southeastern tropical Indian Ocean
Subjects: Q Science > Q Science (General) > Q1-295 General
Q Science > QC Physics > QC1-999 Physics
T Technology > TC Hydraulic engineering. Ocean engineering > TC1-978 Hydraulic engineering
Divisions: Faculty of Mathematics and Natural Science > 45201-Physics (S1)
Depositing User: Dr. Iskhaq Iskandar
Date Deposited: 27 Sep 2019 07:25
Last Modified: 27 Sep 2019 07:25
URI: http://repository.unsri.ac.id/id/eprint/8441

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