5. GFS Configuration
Fig. 5.1 Schematic flow chart for GFS v16 in operations
The sequence of jobs that are run for an end-to-end (analysis+forecast+post processing+verification) GFS configuration using the Global Workflow is shown above. The system utilizes a collection of scripts that perform the tasks for each step.
For any cycle the system consists of two suites – the “gdas” suite which provides the initial guess fields, and the “gfs” suite which creates the initial conditions and forecast of the system.
An experimental run is different from operations in the following ways:
Workflow manager: operations utilizes ecFlow, while development currently utilizes ROCOTO. Note, experiments can also be run using ecFlow on platforms with ecFlow servers established.
Dump step is not run as it has already been completed during the real-time production runs and dump data is available in the global dump archive on supported machines.
Addition steps in experimental mode:
archive (arch_vrfy & arch_tars)
cleanup (cleanup)
Downstream jobs (e.g. awips, gempak, etc.) are not included in the diagram. Those jobs are not normally run in developmental tests.