[Go-essp-tech] syntax on the DRS ID

[Robert S. Drach]

Hi Sylvia,

The DRS publication-level dataset ID - the IDs you will have available 
to match against - is defined in the DRS document:

http://cmip-pcmdi.llnl.gov/cmip5/docs/cmip5_data_reference_syntax.pdf

See section 3.4: Publication-level dataset_id encoding. The form of the 
ID is:

cmip5.product.institute.model.experiment.time_frequency.realm.cmor_table.ensemble

Please note there are a few caveats at this point:

- Although the CMIP5 best practice recommendation is to follow the DRS 
specification for dataset IDs, it is possible that the drs_id attribute 
may differ, if the person doing the publisher configures esgpublish to 
do so. In contrast the drs_id form is hardwired into the esgpublish 
code. The question then is which one to match against if they differ. (I 
would suggest the drs_id, but this remains open for discussion).
- Determination of the product field is relatively complicated in some 
cases. In some cases you may need file-level information such as time 
ranges to generate the product.
- Depending on  the  particular requirements for matching  metafor 
information to  datasets, it might make sense to  just match individual 
fields. All the above fields (product, institute, etc.) are defined 
individually in the dataset metadata on the gateway.

--Bob

Sylvia Murphy wrote:
> Hi Karl,
> I have been talking to the metafor group about the DRS_ID you 
> mentioned on the call this week.  They don't think they are going to 
> have it output directly in their file but I may be able to put it 
> together from various pieces.  I wanted to double check with you on 
> what pieces are going into the ID since it may be different from my 
> recollections.  At one point the syntax was going to be:
>
> institution_model_simulationname_ripvalue + other stuff 
>
> is that still valid?  The "other stuff" (e.g. variable names) will be 
> more granularity than I'll need.  
>
> If you have some examples of actual ids that you have seen generated 
> by data providers that would help as well.
>
> Thanks,
> Sylvia
> ***********************************
> Sylvia Murphy
> NESII/CIRES/NOAA Earth System Research Laboratory
> 325 Broadway, Boulder CO 80305
> Email: sylvia.murphy at noaa.gov <mailto:sylvia.murphy at noaa.gov>
> Phone: 303-497-7753
> Fax: 303-497-7649
>
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