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cmip6dr / cmip7_forward_look

Collection of documents and issues for CMIP7 data request
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Dealing with multiple default start dates #56

Open martinjuckes opened 4 years ago

martinjuckes commented 4 years ago

#375

martinjuckes commented 4 years ago

Many variables are requested to specific time slices. In some cases these are specified relative to the start of an experiment. The 1.0 schema assumes that an experiment has one unique specified start date, but some CMIP6 experiments have a range of possible start dates.

martinjuckes commented 4 years ago

The schema needs to support conditional requests. E.g. an experiment might have optional start dates 1750 or 1850. Requesting data for all years could mean either "all the years from the chosen start date" or "all possible dates". This could be dealt with in the existing structure by changing the guidance on usage of the time slice attribute in the request item, or adding specific time slice elements to the time slice vocabulary.