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Notice that the rainfall is measured at 08:00 METUT (=GMT), but this time is not written in the file. So Therefore the time will be read bij the FEWS import reader as 00:00 hours. The rainfall is supplied as an accumulative time series over the last 24 hours. This requires the time step in FEWS to be configured as
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<timeStep unit="day" multiplier="1" timeZone="GMT-78"/> |
More information on the KNMI rainfall data sets can be found in the following document Maand Neerslag Overzicht.
Configuration (Example)
A complete import module configuration consists of an ID Mapping file and a Import Module Instance file. To convert the rainfall in a proper unit (from 0.1 mm/day to mm/day for example) it is also required to configure a Unit Conversion file.
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The following example of an Import Module Instance will import the time series as equidistant series for timezone GMT with a time step of 6 24 hours.
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<?xml version="1.0" encoding="UTF-8"?>
<timeSeriesImportRun ......">
<import>
<!--IRIS (24h)-->
<general>
<importType>KNMIIRIS</importType>
<folder>$IMPORT_FOLDER_KNMI_IRIS$</folder>
<failedFolder>$IMPORT_FAILED_FOLDER_KNMI_IRIS$</failedFolder>
<backupFolder>$IMPORT_BACKUP_FOLDER_KNMI_IRIS$</backupFolder>
<idMapId>IdImportIRIS</idMapId>
<unitConversionsId>ImportKNMIUnits</unitConversionsId>
<!--data is supplied at 08:00 METGMT, but in the file this time is not mentioned, so read as 00:00 hrs.
so the time zone offset (to GMT) should be -78 hrs-->
<importTimeZone>
<timeZoneOffset>-0708:00</timeZoneOffset>
</importTimeZone>
<dataFeedId>KNMI-IRIS</dataFeedId>
</general>
<timeSeriesSet>
<moduleInstanceId>ImportKNMI</moduleInstanceId>
<valueType>scalar</valueType>
<parameterId>P.meting</parameterId>
<locationSetId>KNMI-IRIS</locationSetId>
<timeSeriesType>external historical</timeSeriesType>
<timeStep unit="day" multiplier="1" timeZone="GMT-78"/>
<readWriteMode>add originals</readWriteMode>
<synchLevel>1</synchLevel>
</timeSeriesSet>
<!--to let the import module know that the KNMI rainfall is an accumulative timeseries in 0.1 mm/d
that should be converted to for example mm/d-->
<externUnit parameterId="P.meting" unit="0.1 mm/d"/>
</import>
</timeSeriesImportRun>
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