Hi.
In addition to Andrew Saulter's excellent points, 'air_gap' is far too
generic. 'Air gap' is a term in computer security, plumbing, and
electrical motors, to name only a few of the many vocabularies in which
it is found. Please add more specific detail about the domain to the name.
Grace and peace,
Jim
On 7/25/19 4:42 AM, Saulter, Andrew wrote:
>
> Hi Aaron,
>
> I?d agree that air_gap would be a very useful parameter to include.
> Following up on Andrew Barna?s question, I did wonder if it is
> possible to make this somewhat more generic (e.g. air_gap is also a
> standard term in oil platform design and could, potentially, be used
> across a wider set of wave overtopping metrics).
>
> If that makes sense, it might also be worth adding a standard name for
> ?freeboard?? To my understanding the difference is that freeboard
> works with an idealised still water level, whereas air gap is an
> instantaneous parameter (i.e. associated with the maximum wave crest
> height)?
>
> In both cases there may be a need for some form of auxiliary
> coordinate specifying the vertical datum that is being used?
>
> Sorry ? only questions at this point, not solutions. As with Andrew
> this is on the edge of my expertise?
>
> Regards
>
> Andy
>
> Andy Saulter
> Surge, Waves and Metocean Projects Manager
> Met Office? FitzRoy Road? Exeter? Devon EX1 3PB
> Tel: +44 (0)330 1350202? Fax: +44 (0)1392 885681
> andrew.saulter at metoffice.gov.uk
> <mailto:andrew.saulter at metoffice.gov.uk> http://www.metoffice.gov.uk
> <http://www.metoffice.gov.uk/>
>
> *From:*CF-metadata <cf-metadata-bounces at cgd.ucar.edu> *On Behalf Of
> *Andrew Barna
> *Sent:* 24 July 2019 21:42
> *To:* Aaron Sweeney - NOAA Affiliate <aaron.sweeney at noaa.gov>
> *Cc:* Armin Pruessner <armin.pruessner at noaa.gov>; CF Metadata List
> <cf-metadata at cgd.ucar.edu>; Shawn Maddock - NOAA Federal
> <shawn.maddock at noaa.gov>; Peter Stone - NOAA Federal
> <peter.stone at noaa.gov>; Jena Kent - NOAA Federal <jena.kent at noaa.gov>
> *Subject:* Re: [CF-metadata] proposal for new standard name: air_gap
>
> Hi Aaron,
>
> This one is way outside my field, but was interesting, these questions
> are my own curiosity.
>
> Is "low steel" an accepted term in whatever field you are in? I was
> handing a hard time finding it used outside "low carbon". Does this
> term apply to bridges that aren't made out of steel?
>
> Does this only apply to the intended navigable portion of the
> waterway? if yes, how about "instantaneous_navigational_clearance" or
> "instantaneous_guide_clearances"? I found these terms in the USCG
> Bridge Programs website, without the "instantaneous" part.
>
> -Barna
>
> On Wed, Jul 24, 2019 at 1:07 PM Aaron Sweeney - NOAA Affiliate
> <aaron.sweeney at noaa.gov <mailto:aaron.sweeney at noaa.gov>> wrote:
>
> Hi,
>
> ? ? ?I haven't found an existing CF standard name for this concept
> (nor a previous discussion), so I am proposing a new standard
> name, as below:
>
> Proposed Standard Name: air_gap
>
> Canonical Units: m
>
> Description: The air gap is the clearance (vertical distance)
> between the instantaneous height of the designated low steel value
> of a bridge and the instantaneous sea surface height.? The height
> of the designated low steel value of a bridge may change due to
> traffic or other loads.
>
> ? ? ?Note: I did make some effort to review existing standard name
> patterns, but the results (below) were coming out rather long,
> which may be an impediment toward understanding and adoption, but
> I include them here for completeness:
> height_difference_between_instantaneous_designated_low_steel_value_of_bridge_and_instantaneous_sea_surface_height
>
> -or-
>
> height_difference_between_instantaneous_designated_low_steel_value_of_bridge_and_instantaneous_sea_level
>
> ? ? ?The air gap is used for safety of navigation into and out of
> ports with bridges.
>
> Cordially,
>
> Aaron
>
> --
>
> Aaron D. Sweeney, Ph. D.
> Water Level Data Manager
>
> Cooperative Institute for Research in Environmental Sciences (CIRES)
> University of Colorado at Boulder
> and
> NOAA National Centers for Environmental Information
> /formerly NOAA's National Geophysical Data Center/
> 325 Broadway, E/NE42
> Boulder, CO 80305-3328
>
> Phone: 303-497-4797, Fax: 303-497-6513
>
> ORCID iD: 0000-0002-2489-6695 <https://orcid.org/0000-0002-2489-6695>
>
> DISCLAIMER: The contents of this message are mine personally and
> do not necessarily reflect any position of NOAA.
>
> _______________________________________________
> CF-metadata mailing list
> CF-metadata at cgd.ucar.edu <mailto:CF-metadata at cgd.ucar.edu>
> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
>
>
> _______________________________________________
> CF-metadata mailing list
> CF-metadata at cgd.ucar.edu
> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
--
CICS-NC <http://www.cicsnc.org/> Visit us on
Facebook <http://www.facebook.com/cicsnc> *Jim Biard*
*Research Scholar*
Cooperative Institute for Climate and Satellites NC <http://cicsnc.org/>
North Carolina State University <http://ncsu.edu/>
NOAA National Centers for Environmental Information <http://ncdc.noaa.gov/>
/formerly NOAA?s National Climatic Data Center/
151 Patton Ave, Asheville, NC 28801
e: jbiard at cicsnc.org <mailto:jbiard at cicsnc.org>
o: +1 828 271 4900
/Connect with us on Facebook for climate
<https://www.facebook.com/NOAANCEIclimate> and ocean and geophysics
<https://www.facebook.com/NOAANCEIoceangeo> information, and follow us
on Twitter at _at_NOAANCEIclimate <https://twitter.com/NOAANCEIclimate> and
_at_NOAANCEIocngeo <https://twitter.com/NOAANCEIocngeo>. /
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.cgd.ucar.edu/pipermail/cf-metadata/attachments/20190725/9bf1e4c5/attachment-0001.html>
Received on Thu Jul 25 2019 - 06:34:17 BST
