The NMC production suite

The suite of production computer jobs which ingests meteorological information, analyzes it, and predicts the future state of the atmosphere for world-wide distribution comprises a number of sub-suites, or "runs". These runs, although differing in purpose and content, have much in common: each includes establishing analysis/initial conditions describing the current state of the atmosphere, forecasting the future state, and making the analysis and forecast information available to a wide assortment of users both inside and outside of the NWS. There are six such runs; all but one are repeated twice per day, using observational data taken at or near the synoptic time of 0000 hours UTC (00Z), and again using data taken at 1200 hours UTC (12Z). These are referred to as the 00Z and 12Z "cycles" respectively. One of the runs also makes use of U6Z data (in the 00Z cycle) or 18Z data (in the 12Z cycle).

该套用于采集气象信息、开展数据分析并预测全球大气未来状态以供分发的生产级计算机作业套件，包含多个子套件，或称“运行流程（runs）”。尽管这些运行流程在用途与内容上各有差异，但核心逻辑高度统一：每项流程均需先构建描述当前大气状态的分析/初始条件，随后开展未来大气状态的预报，并将分析与预报信息开放给美国国家气象局（National Weather Service，NWS）内外的各类用户。该套件共包含6类运行流程；除其中1类外，其余5类每日均执行两次作业：分别采用协调世界时（Coordinated Universal Time，UTC）0000时（00Z）前后获取的观测数据，以及协调世界时1200时（12Z）获取的观测数据开展计算，这两类作业周期分别被称为00Z与12Z循环（cycles）。其中1类运行流程还会在00Z循环中采用U6Z观测数据，或在12Z循环中采用18Z观测数据。