[Esip-documentation] ACDD: global attribute: source vs. variable attribute: coverage_content_type

[Aaron Sweeney]

Thanks for the clarification, Jim, especially for the tip about 
capturing this disambiguation between obs and model variables in the 
summary attribute.

Cordially,
Aaron

On 01/05/2015 12:30 PM, Jim Biard via Esip-documentation wrote:
> Aaron,
>
> The source attribute is a free text field, so you can describe both 
> parts with no problem. The attribute is intended for human reading, 
> not machine processing. Just keep it succinct. You can and should 
> provide a detailed explanation in the summary attribute.
>
> Grace and peace,
>
> Jim
>
> On 1/5/15 2:13 PM, Aaron Sweeney via Esip-documentation wrote:
>> Hi,
>>
>>       I am planning to create a single netCDF file which contains 
>> both insitu observations and modelled values and am trying to 
>> understand how best to use ACDD to distinguish the two.
>>
>>       It appears that I can provide each variable with a 
>> highly-recommended attribute "coverage_content_type" to distinguish 
>> between variables containing insitu observations 
>> ("physicalMeasurement") or modelled values ("modelResult"). This 
>> sounds reasonable.  However, their also exists a recommended global 
>> attribute "source", whose description (see below) seems to imply that 
>> the entire file contains either insitu observations or modelled 
>> values, but not both.
>>
>>> The method of production of the original data. If it was 
>>> model-generated, source should name the model and its version. If it 
>>> is observational, source should characterize it. This attribute is 
>>> defined in the CF Conventions. Examples: 'temperature from CTD 
>>> #1234'; 'world model v.0.1'. 
>>
>>       Am I interpreting the description of the global attribute 
>> "source" correctly?
>>
>>       If not, would a comma-separated list be allowed in the global 
>> attribute "source" to enable inclusion of both insitu observations 
>> and modelled values in the same file?
>>
>>       Thanks for your kind consideration.
>>
>> Cordially,
>> Aaron
>>
>
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-- 
Aaron D. Sweeney
Water Level Data Manager

Cooperative Institute for Research in Environmental Sciences (CIRES)
University of Colorado at Boulder
and
NOAA National Geophysical Data Center
Marine Geology and Geophysics Division
325 Broadway, E/GC3
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Phone: 303-497-4797, Fax: 303-497-6513

DISCLAIMER: The contents of this message are mine personally and do not necessarily reflect any position of NOAA.

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