报告题目： Development of physics interface in the Next Generation Global Predicition System

　　报告人： Dr. Hang Lei, National Centers for Environmental Prediction (NCEP), NOAA

　　报告地点：科研楼401会议室

　　报告时间：2017年7月17日 下午2:30

　　报告摘要：

　　As a key component of the Next Generation Global Prediction System (NGGPS), the NGGPS physics interface is developed in the NOAA Environmental Modeling System (NEMS) in order to facilitate the research, development, and transition to operations of innovations in atmospheric physical parameterizations. An interoperable physics driver (IPD) is used to connect the atmospheric dynamic core, the Common Community Physics Package (CCPP) and the other NEMS-based forecast components (land, ocean, sea ice, wave, and space weather). In current global forecasting system, the IPD has incorporated major existing physics packages including radiation, surface physics, cloud and microphysics, ozone, and stochastic physics. The IPD is also applicable to external physics packages. The structure adjustment in NEMS by separating the CCPP is to create an open physics package pool. This open platform is beneficial to the enhancement of U.S. weather forecast ability. In addition, the NEMS can also be used for multifunction by connecting external target physics packages through the IPD. The test of new physics interface with GSM/FV3 has shown its merits. However, some suspending scientific questions associated with physics interface development will be discussed.

　　The IPD is also developed into a standalone form. This is to facilitate the development works on physics packages. The developers can save the snapshot and instant fields of meteorology data from the system runs, and then used it as offline driving data fields to test the individual physics modules or small changes. This prevents the run of whole system for every test.