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To indicate that data values are missing , NetCDF-CF exports use float value 9.96921e+036 by default. It is possible to change it by entering a different missing value (NaN or other) in the configuration files. Use option <exportMissingValue> in TimeSeriesExport module, and <missVal> in GeneralAdapter
More information about the cf standards can be found at: http://cfconventions.org/Data/cf-standard-names/current/build/cf-standard-name-table.html

There are six types of NetCDF-CF exports which can be defined:

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An example of the IdMapping used for the NETCDF-CF_TIMESERIES export will be given below. In this example, the mapped locations correspond to the locations of the locatiesSet as defined above in the ExportNetcdf_Timeseries.xml.
If the parameter has an entry in the standard name CF table, you can enter it in the externalQualifier1 attribute of the parameter. The value of this qualifier will be added as the standard_name attribute for this variable in the netcdf exported file.

<?xml version="1.0" encoding="UTF-8"?>
<idMap version="1.1" xmlns="http://www.wldelft.nl/fews" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.wldelft.nl/fews http://fews.wldelft.nl/schemas/version1.0/idMap.xsd">
	<parameter internal="Q.udm" external="discharge" externalQualifier1="discharge (not standardname, just for test)"/>

	<location internal="DMTak_1001" external="1001"/>
	<location internal="DMTak_1002" external="1002"/>
	<location internal="DMTak_1003" external="1003"/>
	<location internal="DMTak_1004" external="1004"/>
	...
	<location internal="DMTak_6115" external="6115"/>
</idMap>

NetCDF standard names

If the parameter has an entry in the standard name CF table, you can enter this standard name to the parameters.xml file. The value of this standardName element will be added as the standard_name attribute for this variable in the exported netcdf file.

<parameter id="P.obs" name="Observed Rainfall">
        <shortName>P.obs</shortName>
        <standardName>precipitation_amount</standardName>
</parameter>