Forecast data in a Delft-FEWS central database is are mainly intended for daily operational use and will be automatically cleaned removed when expired. Forecast data that needs to be preserved for later use is best preserved persistently in an external storage location. Exporting forecast data to an external storage is a basic task in any water Resources Management resources management system. This data often includes observations/measurements, (external) meteorological forecasts, historical model simulations and model forecasts. Commercially available databases including WISKI, Aquarius and CUAHSI HIS that are commonly used for timeseries storage allow for storage of both timeseries data and rating curves. However, it is not always possible to store forecast data (which is characterised characterized by multiple time vectors) or 'messy' data such as text reports, communications communication logs, model states, database snapssnapshots, et ceteraetcetera. For this purpose, the Delft-FEWS team at Deltares created developed the Open Archive. The Deltares Open Archive is a file based storage solution where data can be accessed through a catalogue and disseminated though FEWS' webservices. It integrates nicely with Delft-FEWS applications but can be used independently from Delft-FEWS, hence the name 'Open' Archive. The data can be easily accessed by third party applications using web protocols.
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The Deltares Open Archive intimately integrates nicely with Delft-FEWS in a number of ways:
- Delft-FEWS can export data to the Deltares Open Archive.
- Deltares Open Archive data can be visualized within Delft-FEWS.
- Deltares Open Archive data can be used in workflows in a Delft-FEWS application, e.g. a hindcast run.
- Deltares Open Archive data can be disseminated through FEWS' webservices, either directly, or via the operational FEWS system.
Sample applications
The archive can contribute to a number of tasks often encountered in water resources management:
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The process of establishing the quality of a set of forecasts. Often, these are compared to the verifying observations. The record of forecasts needs to be available to the verification tools and one way of achieving this is through an Deltares Open Archive. Indeed, one of the most often used forecast verification packages, the EVS, can source its data from an instance of the Deltares Open Archive.
Web dissemination
In realtime real time hydrological forecasting systems as well as in water information systems, forecasts are often disseminated to stakeholders via the web. One way to do this is by actively pushing data from a forecast production system to HTML pages or to locations from where the data is ingested by a web viewer. The Deltares Open Archive, however, allows for web viewers to directly access the archive and visualize its data in a browser environment.
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- Deltares Open Archive hard and software requirements
- Deltares Open Archive: Technical background
- Installation and configuration of the Deltares Open Archive
- Connecting to the Deltares Open Archive
- Delft-FEWS
- 22 Exchange with the Deltares Open Archive (configuration of archiving tasks in Delft-FEWS)
- 10 Archives.xml (link the SA, OC or FSS to the archive)
- 21 Archive display (configuring the OC display for the archive)
- Deltares Open Archive and third party applications
- Delft-FEWS
- Extensions to the Deltares Open Archive
- User guides
- Configuration
Links and references
Deltares Open Archive brochure
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