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Keyword | definition | ||
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Identification of archive | |||
class | ECMWF classification to the given data:
| ||
stream | Identifies the forecasting system used to generated the data when the same meteorological types are archived.
Both models produce Analysis and Forecast data types. | ||
expver | Version of the experiment. Each experiment is assigned a unique code version. | ||
Date & Time | |||
time | Base time (00, 06, 12 and 18) Observation time (HHMM or HH:MM: ie 09:30) | ||
date | Specifies the Analysis date, the Forecast base date or Observations date. Formats
| ||
step | Specifies the forecast time step from forecast base time. Valid values are hours (HH) | ||
Fields | |||
type | Determines the type of field to be retrieved: This keyword makes the selection between observations, images or fields, and it determines some of the valid remaining keywords of the request.
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levtype | |||
levelist | |||
param | |||
Storage | |||
Denotes type of level:
| |||
levelist | Levels for the specified levtype. (off if levtype=sfc) | ||
param | Meteorological parameter. (t, temprerature, 130, 30.128, ...) | ||
Storage | |||
target | specifies a Unix file into which data is to be written after retrieval or manipulation. Path names should always be enclosed in double quotes: target = "/scratch/ms/gid/analysis.grb" | target |