[GeoNetwork-users] How do encode metadata for climatology dataset in a temporal sense

Dear GN list/ANZLIC list,

We have a lot of datasets here that describe average weather or climate or ocean conditions in particular month
(e.g December) or a season e.g summer. However we are not sure how you encode
this in the temporal sense. We can't use a simple begin date/end date as only format
allowed are yyyy, yyyy-mm or yyyy-mm-dd

Anybody else out there written metadata for climatology datasets? which XML elements did you use
(By the way we are using ISO19139 as base standard for our metadata)

Andrew Walsh
RAN-DODC