The ‘Two oceans and one sea’ extended range numerical prediction system with an ultra-high resolution atmosphere-ocean-land regional coupled model

ABSTRACTThe ‘Two Oceans and One Sea’ area (West Pacific, Indian Ocean, and South China Sea; 15°S–60°N, 39°–178°E) is a core strategic area for the ‘21st Century Maritime Silk Road’ project, as well as national defense. With the increasing demand for disaster prevention and mitigation, the importance of 10–30-day extended range prediction, between the conventional short-term (around seven days) and the climate scale (longer than one month), is apparent. However, marine extended range prediction is still a ‘blank point’ in China, making the early warning of marine disasters almost impossible. Here, the authors introduce a recently launched Chinese national project on a numerical forecasting system for extended range prediction in the ‘Two Oceans and One Sea’ area based on a regional ultra-high resolution multi-layer coupled model, including the scientific aims, technical scheme, innovation, and expected achievements. The completion of this prediction system is of considerable significance for the economic d...