Summary of Abstract Submission

Abstract Submission No. IO50-04-0006PresentationOral

HOW DO EDDIES MODULATE THE BIOGEOCHEMICAL RESPONSE IN THE ARABIAN SEA?

Marina Levy*1, Laure Resplandy2

1 CNRS, France
2 SCRIPPS, USA

ABSTRACT :

We examine the impact of mesoscale dynamics on the seasonal cycle of primary production and oxygen deficit in the Arabian Sea with an eddy‐resolving (1/12) bio‐physical model. Comparison with observations indicates that the numerical model provides a realistic description of climatological physical and biogeochemical fields as well as their seasonal and mesoscale variability during the Southwest and Northeast Monsoons. We show that mesoscale dynamics favors biological production by modulating the nutrient supplies throughout the year and that Eddy-driven advection promotes the vertical supply of oxygen along the western coast of the Arabian Sea and the lateral transport of ventilated waters offshore the coast of Oman and southwest India. Our findings suggest that mesoscale transport processes play a significant role in the nitrogen and oxygen budgets of the Arabian Sea.