[Esip-documentation] date_issued attribute

[Nan Galbraith]

Hi Ajay -

This attribute is not in the working draft, which is located at
wiki.esipfed.org/index.php/Attribute_Convention_for_Data_Discovery_%28ACDD%29_Working

There has been some email discussion about the 3 "file dates" in the
original ACDD/UDD,  but we've moved from one email list to another over
the years,  and I'm not sure I can figure out exactly when this was 
dropped -
or even if it's gone permanently.

> There are 3 "file dates" in ACDD: _created, _issued, _modified.
> Only date_created is "recommended" ... 

The original definition was, as you noticed,  circular, but the ISO  
19115-2
column in the 'current version' page at
wiki.esipfed.org/index.php/Attribute_Convention_for_Data_Discovery_%28ACDD%29
has slightly different terms for these fields, at the most detailed level:

date_created: /gmd:CI_DateTypeCode="creation"
date_modified: /gmd:dateType/gmd:CI_DateTypeCode="revision"
date_issued: /gmd:dateType/gmd:CI_DateTypeCode="publication"

My group (OceanSITES) uses only data_created, because we don't really
'update' files; and when we overwrite a file, we often lose the original 
publication
date. We could make an effort to track that date, but it doesn't seem 
pertinent
for our data.

Regards - Nan

On 7/30/13 1:02 PM, Ajay Krishnan - NOAA Affiliate wrote:
> Hi everyone,
>
> I stumbled upon the 'date_issued 
> <http://www.unidata.ucar.edu/software/netcdf-java/formats/DataDiscoveryAttConvention.html#date_issued_Attribute>' 
> attribute while comparing our NetCDF data with the UDDC scores. This 
> field seems to be missing in our NetCDF templates for some reason, and 
> we would like to incorporate the same into them. Looking at the 
> description, it's still a little unclear as to what is meant by, "the 
> date on which this data was formally issued". Can you kindly provide 
> us with a more substantial definition of the atrribute which would 
> clearly differentiate it from the date_created 
> <http://www.unidata.ucar.edu/software/netcdf-java/formats/DataDiscoveryAttConvention.html#date_created_Attribute> 
> attribute?
>
> Any help/ guidance on this would be much appreciated.
>
> Thanks,
> Ajay
>
>
> _______________________________________________
> Esip-documentation mailing list
> Esip-documentation at lists.esipfed.org
> http://www.lists.esipfed.org/mailman/listinfo/esip-documentation


-- 
*******************************************************
* Nan Galbraith        Information Systems Specialist *
* Upper Ocean Processes Group            Mail Stop 29 *
* Woods Hole Oceanographic Institution                *
* Woods Hole, MA 02543                 (508) 289-2444 *
*******************************************************


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.lists.esipfed.org/pipermail/esip-documentation/attachments/20130730/ab00144f/attachment.html>