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| What is ODB?ODB (Observation DataBase) is a file-based database-like system developed at ECMWF to store and retrieve large volumes of meteorological observational and feedback data efficiently for use within the IFS. Currently, ODB |
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files come in two flavours: - ODB-1 (the original hierarchical table format capable of running in a parallel environment within IFS)
ODB-2 (a
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The home of the software is
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Data from ODB can be extracted using the ODB/SQL query language, which is generally a small subset of SQL with some useful extensions. The home of the ODB software is |
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What Metview version do I need for FLEXPART?
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The minimum Metview version to use is 5.0. |
How to use FLEXPART with Metview?
Metview provides a high level interface to prepare input data for FLEXPART from ECMWF's MARS archive (via the FLEXPART Prepare icon),
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perform a FLEXPART simulation (via the FLEXPART Run icon)
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and visualise the resulting output files. For the visualisation the gridded outputs in FLEXPART's custom binary format are converted to GRIB (click here for details).
Tutorial
There is a tutorial available on the use of FLEXPART with Metview explaining both the basics of the FLEXPART simulations and the related visualisation techniques. The snapshots below showcase a few of the FLEXPART plot types that can be generated with Metview:
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What FLEXPART version is supported in Metview?
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Please note that the Metview interface was written for version 9.02 of FLEXPART. |
FLEXPART at ECMWF
FLEXPART is installed at ECMWF to be directly used from within Metview. You can find out more about it here.
FLEXPART outside ECMWF
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ODB API Home. The ODB iconMetview automatically recognizes both ODB-1 and ODB-2 formats and assigns the same icon to both types of file in the user interface:  Image Added
Examining ODB contentsThe meta-data and data contents of an ODB can be inspected with the ODB Examiner, which can be started up from the user interface (right-click examine on the icon).  Image Added
Filtering ODBFiltering ODB data is performed with the ODB Filter icon, which can perform an ODB/SQL query resulting in a new ODB:  Image Added
Visualising ODBThe ODB Visualiser icon is used to visualise (and optionally filter) ODB data using various techniques and plot types:  Image Added
Script language supportMetview provides full support for ODB from its Macro and Python interfaces. The full list of available functions can be found on the ODB Functions page. For elaborated examples please study the tutorials and see the Gallery. |
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