[U08-P09] Global deployment of Deep Argo floats toward accurate prediction of future climate and ecosystem changes
Keywords:Deep Argo Floats, Turbulence in the deep ocean, Deep oceanic circulation, Prediction of future climate changes, Prediction of future ecosystem changes
The Oceanographic Society of Japan submitted a research proposal in association with the 16 academic societies in the Fisheries/Oceanography Research Liaison Council and the Paleontological Society of Japan. The proposal aims to unveil the deep oceanic circulation, which is currently acting as the bottleneck in reproducing past and future climate variability and global environmental changes in numerical models. More specifically, the proposal focuses on observation of turbulence in the deep sea with a turbulence sensor attached to the deep-sea Argo float (target depth more than 4000 meters) or "Deep NINJA". More than 10 floats of this type with conventional temperature and salinity sensors are in actual operation in the Southern Ocean. By deploying approximately 1000 floats, observation of temperature, salinity and turbulence will be conducted globally from the ocean surface to seafloor. The obtained data will be incorporated into a coupled atmosphere-ocean global climate model, and the simulation conducted using the leading Japanese supercomputer facility would yield an accurate reproduction and prediction of the past and future climate. Responses of biological community to the reproduced paleo-environmental changes can be validated by paleontological data such as microfossil record in sediment core, and the validation further refine the model prediction. A far more accurate prediction of future climate, marine biological production and marine bio-resources will be achieved through the proposed research project.