Abstract: he design and performance of the NIM global weather prediction model is described. NIM is a dynamical core designed to run on CPU, GPU and MIC processors. It demonstrates efficient parallel performance and scalability to ...

Abstract: milation is the process by which observations are combined with short-range NWP model output to produce an analysis of the state of the atmosphere at a specified time. Since its inception in the late 1990s, the multiagency ...

Abstract: The Weather Research and Forecasting (WRF) model?based variational data assimilation system (WRF-Var) has been extended from three- to four-dimensional variational data assimilation (WRF 4D-Var) to meet the increasing ...