[esip-semantictech] http://cfconventions.org/

Wed Jan 15 12:09:07 EST 2020

Hi all, 

FWIW As indicated in that same CF FAQ page, the MMI ORR also maintains an RDF representation of the CF Standard Names vocab: 
https://mmisw.org/ont/cf/parameter 
of course with every definition having its own URI. 
As also indicated there, MMI also developed a CF Standard name "browser": 
https://mmisw.org/cfsn/ 
which also resolves CF mappings between the MMI ORR and NERC vocabs, see e.g.: 
https://mmisw.org/cfsn/#/age_of_sea_ice 

Carlos 

> From: "esip-semanticweb" <esip-semanticweb at lists.esipfed.org>
> To: "Parsons, Mark" <parsom3 at rpi.edu>, "Mcgibbney, Lewis J"
> <lewis.j.mcgibbney at jpl.nasa.gov>
> Cc: "esip-semanticweb" <esip-semanticweb at lists.esipfed.org>
> Sent: Tuesday, January 14, 2020 7:35:42 PM
> Subject: Re: [esip-semantictech] http://cfconventions.org/

> Hey folks,

> I think CF does have valid URIs hosted at the NERC Vocabulary Server: [
> http://vocab.nerc.ac.uk/collection/P07/current/ |
> http://vocab.nerc.ac.uk/collection/P07/current/ ]

> It's mentioned here:
> [ http://cfconventions.org/faq.html#what-tools-exist-to-work-with-standard-names
> |
> http://cfconventions.org/faq.html#what-tools-exist-to-work-with-standard-names
> ]

> cheers, Adam

> On 1/14/20 10:20 PM, Parsons, Mark via esip-semanticweb wrote:

>> Agreed. A name without a persistent, unique, registered, and resolvable
>> identifier (a PURRI? :-)) is of limited value in today’s world.

>> I might argue that sorting out the issues of persistence, uniqueness,
>> registration, and resolvability could drive greater consensus on what a term
>> like ‘atmosphere_absorption_optical_thickness_due_to_black_carbon_ambient_aer’
>> actually means. Those who care about the term should maintain the term and make
>> it open broadly.

>> This means that we will never have a master list. We will have multiple lists
>> that at times conflict. But if we can reference our ambiguity precisely, we can
>> better sort out the differences and tell our machines to do the same.

>> yours in abstraction,

>> -m.

>>> osol_at_532nm)

>>> On 14 Jan 2020, at 17:47, Mcgibbney, Lewis J (172B) via esip-semanticweb [
>>> mailto:esip-semanticweb at lists.esipfed.org |
>>> <esip-semanticweb at lists.esipfed.org> ] wrote:

>>> Your absolutely correct Stephen. It doesn't. But I really think that if URI's
>>> are the sole driver behind GCMD replicating all of this work, then URI's should
>>> be added to CFConventions.
>>> Excellent point Stephen.
>>> Lewis

>>> On 1/14/20, 2:41 PM, "AZ Stephen Richard" [ mailto:smrtucson at gmail.com |
>>> <smrtucson at gmail.com> ] wrote:

>>>   There's a big problem with [
>>>   http://cfconventions.org/Data/cf-standard-names/70/build/cf-standard-name-ta |
>>>   http://cfconventions.org/Data/cf-standard-names/70/build/cf-standard-name-ta ]
>>>    ble.html, it doesn't seem to provide URIs for the variables, and the
>>>    engineering to resolve the uri's.  Am I missing something?

>>>    steve

>>>    -----Original Message-----
>>>   From: esip-semanticweb [ mailto:esip-semanticweb-bounces at lists.esipfed.org |
>>>    <esip-semanticweb-bounces at lists.esipfed.org> ] On
>>>    Behalf Of Mcgibbney, Lewis J (172B) via esip-semanticweb
>>>    Sent: Tuesday, January 14, 2020 3:34 PM
>>>   To: [ mailto:esip-semanticweb at lists.esipfed.org |
>>>   esip-semanticweb at lists.esipfed.org ] Subject: Re: [esip-semantictech] NASA GCMD
>>>    Keywords Version 9.0 Released
>>>    (2019-11-12)

>>>    Hi Tyler,

>>>> Regarding the measurement keywords, the EOSDIS data centers needed a more

>>> fine-grained list of specific measurements
>>>    (e.g.atmosphere_absorption_optical_thickness_due_to_black_carbon_ambient_aer
>>>    osol_at_532nm) than the science keywords offered.

>>>    It appears to me that the correct place for this is in the CF Conventions...
>>>    which has a hugely active community for exactly this kind of thing.
>>>    Actually, if you look at the current CFConventions standard name table, you
>>>    can already find
>>>    atmosphere_absorption_optical_thickness_due_to_black_carbon_ambient_aerosol.
>>>   .. try it out [
>>>   http://cfconventions.org/Data/cf-standard-names/70/build/cf-standard-name-ta |
>>>   http://cfconventions.org/Data/cf-standard-names/70/build/cf-standard-name-ta ]
>>>    ble.html

>>>> The recommendation for this was put forward in an ESO review

>>> This is concerning

>>>> approved by ESDIS,

>>> This is even more concerning... why wasn't guidance issued to use
>>>    CFConventions?

>>>> and there is a preliminary list of 100 measurements.

>>> ... there are thousands of existing, well defined variables measured in
>>>    CFConventions. Why start a new list in GCMD?

>>>> We plan to put forward additional measurement keywords in an upcoming
>>>> keyword release,  and we can add interested folks

>>> here in that review. The measurement keywords specifically support the
>>>    NASA UMM Variables Model (UMM-Var) evolution which has a field called
>>>    'MeasurementName' that  allows metadata curators to provide community
>>>    sourced names to further describe variable
>>>        data.

>>>    I understand that other variable names can be used in UMM, namely
>>>    CFConventions. Thanks for pointing that out.

>>>    Lewis

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