Implementation of the Lakes Michigan and Huron Operational Forecast System (LMHOFS) and the Nowcast/Forecast Skill Assessment

The Lakes Michigan and Huron Operational Forecast System (LMHOFS), with the Finite Volume Community Ocean Model (FVCOM) as its hydrodynamic core, has been implemented to provide users with nowcasts (analyses of near present) and forecast guidance of the three-dimensional (3-D) physical conditions of Lakes Michigan and Huron, including surface water levels and 3-D water currents and water temperature, out to 120 hours. By combining Lakes Michigan and Huron into one model grid and invoking advanced model schemes and algorithms, LMHOFS is expected to provide more accurate predictions than the previous National Ocean Service (NOS) Lake Michigan OFS (LMOFS) and Lake Huron OFS (LHOFS), which had separate model domains based on the Princeton Ocean Model (POM).

密歇根湖与休伦湖业务预报系统（LMHOFS）以有限体积社区海洋模式（FVCOM）作为水动力核心，旨在为用户提供密歇根湖与休伦湖的临近预报（即当前时刻实况分析）以及三维物理场条件的预报指导，涵盖水面水位、三维水流与水温，预报时效长达120小时。该系统通过将密歇根湖与休伦湖整合至单一模式网格，并采用先进的模式方案与算法，相比此前基于普林斯顿海洋模式（POM）构建独立模式域的美国国家海洋服务局（NOS）密歇根湖业务预报系统（LMOFS）与休伦湖业务预报系统（LHOFS），有望提供更为精准的预报结果。