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Imports time series data with observed daily rainfall from the KNMI that is delivered to the Dutch waterboards. The files are in CSV format with file extension (*.dat) the next definition in the file:
<location ID>, <location name>, <X in km>, <Y in km>, <date in YYYYMMDD>, <value in 0.1 mm>. See the example file and the KNMI site.
Notice that the rainfall is measured at 08:00 UT (=GMT), but this time is not written in the file. 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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More information on the KNMI rainfall data sets can be found in the following document Maand Neerslag Overzicht.on the KNMI website
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 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 GMT, but in the file this time is not mentioned, so read as 00:00 hrs.
so the time zone offset (to GMT) should be -8 hrs-->
<importTimeZone>
<timeZoneOffset>-08:00</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-8"/>
<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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Defines mappings between KNMI and FEWS parameters and locations. |
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<idMap version="1.1" ..............>
<map internalParameter="P.meting" internalLocation="KNMI_827" externalParameter="827" externalLocation="827"/>
<map internalParameter="P.meting" internalLocation="KNMI_831" externalParameter="831" externalLocation="831"/>
<map internalParameter="P.meting" internalLocation="KNMI_896" externalParameter="896" externalLocation="896"/>
<map internalParameter="P.meting" internalLocation="KNMI_902" externalParameter="902" externalLocation="902"/>
.....
</idMap>
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Defines the conversion of the units that should be applied. |
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<?xml version="1.0" encoding="UTF-8"?>
<unitConversions ...................>
<unitConversion>
<inputUnitType>0.1 mm/d</inputUnitType>
<outputUnitType>mm/d</outputUnitType>
<multiplier>0.1</multiplier>
<incrementer>0</incrementer>
</unitConversion> ........
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</unitConversions>
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An example of a csv-file from IRIS to be imported using the KNMI-IRIS import Module. |
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10,HOLLUM , 172, 605,20071028, 0
11,WEST TERSCHELLING , 144, 598,20071028, 0
16,PETTEN , 106, 531,20071028, 0
17,DEN BURG , 116, 563,20071028, 1
18,NES (AMELAND) , 181, 607,20071028, 0
19,DE COCKSDORP , 121, 575,20071028, 2
21,CALLANTSOOG , 109, 541,20071028, 0
26,FORMERUM , 149, 601,20071028, 1
64,SNEEK , 172, 561,20071028, 0
65,MAKKUM , 156, 564,20071028, 1
67,DOKKUM , 195, 593,20071028, 0
69,APPELSCHA , 219, 553,20071028, 0
73,DRACHTEN , 203, 570,20071028, 0
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