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When filename starts with the pattern do not use quotes in at the start: yyyyMMdd'_bla.nc'
fileNameEnsembleMemberIndexPattern
Use ? to indicate the position of the ensemble member index in the filename. For example
<fileNameEnsembleMemberIndexPattern>cosmo_???.dat</fileNameEnsembleMemberIndexPattern>
Litteral parts that contain unrelated characters can be also replaced with a dummy character character. For example
<fileNameEnsembleMemberIndexPattern>xxxxxx???.dat</fileNameEnsembleMemberIndexPattern>
This is useful if the filename keeps changing , for example because of the presence of a date in the filename
fileNameLocationIdPattern
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