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Keyword | definition |
---|---|
class | Specifies the ECMWF classification given to the data
Full list of class definitions |
stream | Identifies the forecasting system used to generated the data when the same meteorological types are archived For example, oper is used for the Operational Atmospheric model and wave for the Wave model. Both models produce Analysis and Forecast data types. Full list of stream definitions |
expver | Is the version of the data |
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.
Full list of type definitions |
levtype | Denotes type of level:
|
param | Meteorological parameter. (t, temprerature, 130, 30.128, ...) |
grid | Output grid mesh
|
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 = "analysis.grb" |