What Is Initialization?
The starting point of a weather model run, a snapshot of the atmosphere that the model steps forward in time. In technical terms: The preparation of a model's initial state from a data-assimilation analysis, including balancing procedures to reduce spurious gravity waves; initialization time is labeled in UTC (for example the 12Z run).
Initialization In Plain English
The starting point of a weather model run, a snapshot of the atmosphere that the model steps forward in time.
The Technical Definition
The preparation of a model's initial state from a data-assimilation analysis, including balancing procedures to reduce spurious gravity waves; initialization time is labeled in UTC (for example the 12Z run).