Re: [CF-metadata] standard names under ice velocity of water

2017-05-30 Thread Lowry, Roy K. 
Dear Ute,


I would prefer the same Standard Name for the currents in a body of water 
whether or not it is covered by ice. What happens if you have a full year of 
data from a position where there is only ice for part of the year? Would you 
have a change of Standard Name for the water body currents when the ice melts?


So, why not use 'eastward_sea_water_velocity' and 
'northward_sea_water_velocity'?


Cheers, Roy.


Please note that I partially retired on 01/11/2015. I am now only working 7.5 
hours a week and can only guarantee e-mail response on Wednesdays, my day in 
the office. All vocabulary queries should be sent to enquir...@bodc.ac.uk. 
Please also use this e-mail if your requirement is urgent.



From: CF-metadata  on behalf of Ute Brönner 

Sent: 30 May 2017 15:39
To: cf-metadata@cgd.ucar.edu
Cc: Petter Rønningen; Morten Omholt Alver; Tor Nordam
Subject: [CF-metadata] standard names under ice velocity of water

Hei from Norway!

Our institute produces metocean data including currents and ice with the 
variables

eastward_sea_ice_velocity and northward_sea_ice_velocity
surface_eastward_sea_water_velocity and surface_northward_sea_water_velocity

The latter include the velocity of water and ice together:
"Water" means water in all phases, including frozen i.e. ice and snow. A 
velocity is a vector quantity. "Eastward" indicates a vector component which is 
positive when directed eastward (negative westward).

We are also storing the velocity of water under the ice (which one could assume 
as the difference of the two above, slightly more complicated I think). What 
would be the standard name for that velocity? If there isn't any yet, may we 
propose
underice_eastward_sea_water_velocity and underice_northward_sea_water_velocity?

With kind regards / med vennlig hilsen,
Ute

Ute Brönner
Research Scientist & Senior Project Manager

SINTEF Ocean
Environmental Technology, Monitoring and Modelling
www.sintef.no/DREAM,  
www.sintef.no/OSCAR
OSCAR – Oil Spill Contingency and Response - SINTEF
www.sintef.no


DREAM – Dose-related Risk and Effects Assessment Model - 
SINTEF
www.sintef.no




Direct phone (+47) 998 98 987
Visiting: Brattørkaia 17C
Post: SINTEF Ocean AS, Postbox 4762 Sluppen, N-7465 Trondheim

  Consider the environment before printing. Less print-outs, more trees, 
better planet.


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Re: [CF-metadata] New standard names for NEMO ocean model output

2017-05-30 Thread Sebastien Villaume 
Dear all,

we would like to start using the remaining 3 standard names for NEMO output. We 
only need to reach a consensus on the standard names we would like to have:

change_in_sea_surface_height_due_to_change_in_sea_water_density
change_in_sea_surface_height_due_to_change_in_sea_water_practical_salinity
change_in_sea_surface_height_due_to_change_in_sea_water_temperature

or 

steric_change_in_sea_surface_height
halosteric_change_in_sea_surface_height
thermosteric_change_in_sea_surface_height

as I mentioned before, I don't have a strong preference, I only need a decision 
so that we can using them. 

thanks,
/Sébastien

- Original Message -
From: "Lowry, Roy K." 
To: "Jonathan Gregory" , "Sebastien Villaume" 

Cc: cf-metadata@cgd.ucar.edu
Sent: Thursday, 27 April, 2017 09:48:42
Subject: Re: New standard names for NEMO ocean model output

Dear All,


My preference (but not insistence) would be for the more compact versions 
providing steric, halosteric and thermosteric are clearly described in the 
definitions. This is cleaner, less confusing, consistent with past practice, 
more likely to be discovered and readily understandable by those who are likely 
to need to use the Standard Names.


If this is unacceptable to anybody then I'm in total agreement with Jonathan 
that we need to be consistent with existing Standard Names incorporating 
'sterics', which means including both forms and aliasing them.


Note that established practice over the past decade has caused 'alias' to come 
to mean 'deprecated and replaced by' rather than 'synonym'. Consequently, if 
going for the option of adding both forms and replacing the existing 'sterics' 
then the 'sterics' need to be the 'deprecates' and the 'due-tos' need to be the 
replacements in all cases.


Cheers, Roy.


Please note that I partially retired on 01/11/2015. I am now only working 7.5 
hours a week and can only guarantee e-mail response on Wednesdays, my day in 
the office. All vocabulary queries should be sent to enquir...@bodc.ac.uk. 
Please also use this e-mail if your requirement is urgent.



From: CF-metadata  on behalf of Sebastien 
Villaume 
Sent: 27 April 2017 09:16
To: Jonathan Gregory
Cc: cf-metadata@cgd.ucar.edu
Subject: Re: [CF-metadata] New standard names for NEMO ocean model output

Dear all,

I am not a domain expert, I can't really grasp which set of names is more 
suitable. As a non expert, I would favour the first set because it is more 
explicit.

That said, I will follow what the domain experts and/or the standard names 
experts would recommend. Please let us know so we can agree and start using 
these names.


Best wishes,
/Sébastien

- Original Message -
From: "Jonathan Gregory" 
To: cf-metadata@cgd.ucar.edu
Sent: Wednesday, 26 April, 2017 22:36:14
Subject: Re: [CF-metadata] New standard names for NEMO ocean model output

Dear Sebastien

> @Jonathan: what would be the standard names if we were using 
> "_due_to_change_in_" ? Since it is a "change" of height due to a "change" of 
> a physical property, we end up with:
>
> change_in_sea_surface_height_due_to_change_in_sea_water_density
> change_in_sea_surface_height_due_to_change_in_sea_water_practical_salinity
> change_in_sea_surface_height_due_to_change_in_sea_water_temperature

Yes, I agree, that would be right.

> It is fine for me but I understand it could look awkward to some 
> users/experts. It is however nicely verbose to help understand what those 
> parameters are.
>
> If we were removing "_above_sea_floor" from the names proposed by Alison:
>
> steric_change_in_sea_surface_height
> halosteric_change_in_sea_surface_height
> thermosteric_change_in_sea_surface_height
>
> it is more compact and elegant but it could be a bit cryptic to non-experts.

Yes, I agree with this too. As I mentioned, thermosteric and steric do appear
in existing names (one each), so we should either rename those with due_to, or
use the steric terms here, for consistency.

> I am fine with both formulations and I agree with Kevin, we could keep both 
> versions and make aliases.

I am fine too with either of them, but not with aliases for this purpose. We
use aliases to preserve backwards-compatibility when we change our minds, not
to provide synonyms in the first place.

Best wishes

Jonathan
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[CF-metadata] standard names under ice velocity of water

2017-05-30 Thread Ute Brönner 
Hei from Norway!

Our institute produces metocean data including currents and ice with the 
variables

eastward_sea_ice_velocity and northward_sea_ice_velocity 
surface_eastward_sea_water_velocity and surface_northward_sea_water_velocity

The latter include the velocity of water and ice together:
"Water" means water in all phases, including frozen i.e. ice and snow. A 
velocity is a vector quantity. "Eastward" indicates a vector component which is 
positive when directed eastward (negative westward).

We are also storing the velocity of water under the ice (which one could assume 
as the difference of the two above, slightly more complicated I think). What 
would be the standard name for that velocity? If there isn't any yet, may we 
propose
underice_eastward_sea_water_velocity and underice_northward_sea_water_velocity?

With kind regards / med vennlig hilsen,
Ute

Ute Brönner
Research Scientist & Senior Project Manager 

SINTEF Ocean
Environmental Technology, Monitoring and Modelling
www.sintef.no/DREAM,  www.sintef.no/OSCAR

Direct phone (+47) 998 98 987
Visiting: Brattørkaia 17C
Post: SINTEF Ocean AS, Postbox 4762 Sluppen, N-7465 Trondheim 

  Consider the environment before printing. Less print-outs, more trees, 
better planet.


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