[Esip-documentation] ACDD questions

Nan Galbraith ngalbraith at whoi.edu
Fri Apr 19 15:39:03 EDT 2013


Hi all -

Is this now the right list to discuss the ACDD? I'm highly motivated to
confirm some details and definitions, since I'm working on an update
to the oceansites format specification, and we're trying to adopt ACDD.

And, what is now the definitive page describing ACDD? The geo-ide page
includes a field that's not on the unidata page, geospatial_bounds.
I'm not sure if that's intended to be in addition to the min/max
lat/long attributes, or an alternative.  The geo-ide page is at
https://geo-ide.noaa.gov/wiki/index.php?title=NetCDF_Attribute_Convention_for_Dataset_Discovery
and I guess I'd like to know if that has been (or is going to be) replaced
by something on the ESIP site?

Has anyone who's using a keywords attribute figured out a decent scheme?
I'm going to assume that  we're talking about describing the 'science' data
with these, not data sources or feature types.

My question is whether these should be listing all the data variables in 
a file,
or the general field of the data - e.g.
  ''air_temperature, relative_humidity, rainfall_rate..."
vs
"OCEANOGRAPHY: GENERAL: Marine meteorology" (or just "Marine meteorology")

Last point - I notice that the NetCDF-U people are identifying files 
that follow their
spec (for uncertainty)  using a more standard approach than ACDD; they add
UW-1.0 as a term in the Conventions attribute.  Should we consider this 
too, in
place of the Metadata_Conventions attribute?
Conventions = "CF-1.5 UW-1.0 ACDD-1.0"

ACDD is certainly not the only metadata convention, and NUG recommends 
putting
all the conventions in one attribute.

Thanks - Nan


> Our discussion today about mailing list names has borne fruit!
>
> Great work and thanks to our ESIP colleagues!
>

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


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