Dear Alexandra
Thanks for the proposals. As we have discussed, I think the standard names
are fine. For CMIP6 and SIMIP it is perfectly OK to specify the cell_methods
for the diagnostics you want. The standard_name definitions, however, should
not include mean, maximum, etc. or the specification of cell_methods. The
standard_name and cell_methods together describe the diagnostics.
Best wishes
Jonathan
----- Forwarded message from Alexandra Jahn <alexandra.jahn at colorado.edu> -----
> Date: Fri, 12 Aug 2016 19:44:12 +0000
> From: Alexandra Jahn <alexandra.jahn at colorado.edu>
> To: "cf-metadata at cgd.ucar.edu" <cf-metadata at cgd.ucar.edu>
> Subject: [CF-metadata] New sea ice variable definitions (CMIP6 SIMIP)
>
> Dear CF community,
>
> to more specifically describe sea-ice output from climate-model simulations for the CMIP6 Sea-Ice MIP (SIMIP), we would like to propose the following additional new CF standard names (as part of the SIMIP CMIP6 data request).
> 1. magnitude_of_sea_ice_normal_stress: Average normal stress in sea ice (first stress invariant), units 'N m-1?. This is a horizontal stress, which is perpendicular/normal to each of the vertices making up the a grid cell in the horizontal plane. The average represent the spatial average stress. Cell_method attribute "area: average?
> 2. magnitude_of_sea_ice_shear_stress: Maximum shear stress in sea ice (second stress invariant), units 'N m-1?. This is a horizontal shear, the areal maximum shear of the normal and shear stress stress acting on the vertices of a grid. Cell_method attribute "area: maximum?.
> 3. magnitude_of_sea_ice_velocity_shear: Maximum shear of sea-ice velocity field (second shear strain invariant)(new variable with units '1/s?). This is the areal maximum shear strain rate in the horizontal plane of the sea ice. Cell_method attribute "area: maximum?
> Thank you very much for your feedback, guidance and input.
>
> With best wishes, for the SIMIP Steering Committee,
>
> Alexandra Jahn
>
>
> Alexandra Jahn
> Assistant Professor, Department of Atmospheric and Oceanic Sciences
> INSTAAR Fellow
> University of Colorado Boulder
> Campus Box 450
> Boulder, CO 80309-0450 USA
> alexandra.jahn at colorado.edu<mailto:alexandra.jahn at colorado.edu>
> Phone: 303-735-3352
> http://instaar.colorado.edu/people/alexandra-jahn/
>
>
>
>
>
>
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----- End forwarded message -----
Received on Mon Aug 15 2016 - 01:42:44 BST
