Impact of ocean optical properties on the Pacific decadal variation

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We implemented a new ocean radiant heating scheme that enables us to take into account the effect of the varying solar angle and the local heating by chlorophyll-a concentration into three models; an ocean general circulation model, an ocean biogeochemical model, and a coupled atmosphere-ocean model, to examine the impact of the ocean optical properties on the Pacific decadal variation. The secondary dynamical response to a change in water optical properties induced a significant impact on the amplitude of the Pacific decadal variation, as well as the mean structure of the tropical atmosphere-ocean. These results indicate that care about the treatment of water optical properties in ocean models is indispensable for climate modeling