IMPACT OF OZONE CONCENTRATION ON OCEAN COLOUR RETRIEVALS FOR OCM-2

A simple modification to the existing methodology for calculating biological production in global ocean model is proposed here. A space- and time-varying production depth is found in the upper few metres of the ocean based on sunlight and nutrient availability. This new method is tested for Indian Ocean biological production zones. With this new method the carbon cycling in the surface of the Indian Ocean is simulated better in the model. A reason for the improvement is detailed in the paper.

This study carried out to check the variations of Sea Level Pressure (SLP) during the cyclone conditions. SLP fields are estimated using University of Washington Planetary Boundary Layer model during Phailin, Lehar and Madi, three vary severe cyclonic storms which occurred in 2013 over Bay of Bengal region. Model performance in estimating SLP variations during cyclonic periods was investigated by comparison against cyclone reports of Indian Meteorological Department and in-situ observations.