海洋大氣學門重點計畫-多重尺度海氣交互作用與生物效應研究

As the key processes linking the ocean and the atmosphere, the dynamics in the air-sea interaction plays a crucial role in the development of various weather and climate systems, e.g., typhoons and ENSO. Unfortunately, the interaction is extremely complicated, which is difficult to interpret using the present theorem of fluid dynamics. To lower the difficulty of numerical simulation and the complexity of research work, these complex processes are often simplified as momentum flux (wind stress), heat flux, and fresh water flux. In other words, a large amount of observations is required to derive the empirical formula in order to interpret the complex physical processes. This integrated team, consisting of atmospheric and oceanic investigators, will systematically observe the air-sea interactions using an advanced air-sea observing system consisting of ship-based dual-polarimetricDoppler weather radar, shipborne meteorological tower, air-sea buoy, autonomous underwater vehicle, floating platform, and turbulence profiler. We will focus on the dynamic processes in the upper 20 m in the ocean and lower 10 km in the atmosphere, including (1) the variations of diurnal warm layer and detailed flow variability, (2) the impacts of oceanic physical environment and atmospheric condition on the diurnal warm layer, and (3) the air-sea interactions underlying the atmospheric intra-seasonal oscillation. The abovementioned research tasks and the observational data will be used to optimize the parameterization ofsubgrid processes and the assimilation schemes in the numerical models for improving the model performance. These will further provide the calibration and sea truth required for a recent development of satellite remote sensing technology