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

2017-03-30 Thread Sebastien Villaume
Hi all, I would like to reactivate this specific thread in order to reach an agreement and get these standard names accepted and published in the next version of the table. I went through the whole thread and updated each proposed standard name according to the comments/suggestions made (plea

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

2017-03-30 Thread alison.pamment
Dear Sebastien, I have been discussing these names again off-list with the proposer Kevin Marsh over the last few days. I think we are making good progress and I am doing some more work on the definitions of the names. I will post a summary of progress on all these names within the next day or

Re: [CF-metadata] WG: proposal for two new standard_names and an additional chemical species

2017-03-30 Thread Lowry, Roy K.
Hi Alison, The 'in equilibrium' in pCO2 definition refers to the air in the analytical equipment and so has nothing to do with air-sea interface equilibrium. pCO2 is measured by using something like a shower-head or a column full of marbles to equilibrate the water sample with a stream of air

[CF-metadata] CF compliant tripolar grid representation

2017-03-30 Thread Sebastien Villaume
Hello all, I am looking for the best approach to describe in a CF compliant way the tripolar grids usually used in NEMO configurations. Basically, the difference with a usual bipolar grid (north pole-south pole) is that the north pole is split into 2 poles moved over Canada and Russia (to have

Re: [CF-metadata] CF compliant tripolar grid representation

2017-03-30 Thread Jim Biard
Sébastien, If I'm not mistaken, we would need to propose a new grid_mapping to be added to the Conventions that would define a Tripolar Coordinate Reference System, along with any attributes that don't currently exist that are needed to complete the definition. I did a search for a standard t

[CF-metadata] Standard Names Representing Measurements not due to some process

2017-03-30 Thread Andrew Barna
Hello, I was having a discussion regarding rosette mounted transmissometers, specifically the Wetlabs C-Star. The most obvious standard name for the measurement appears to be: volume_beam_attenuation_coefficient_of_radiative_flux_in_sea_water However, because of the way the instrument is calibr

Re: [CF-metadata] CF compliant tripolar grid representation

2017-03-30 Thread Karl Taylor
Hi Sebastien, More than one group stored output on a tripolar grid in CMIP5. I'm pretty sure they did it in a CF-conforming way. I know at least some of the GFDL model output was reported on a tripolar grid, as described at http://nomads.gfdl.noaa.gov/CM2.X/oceangrid.html (or search on "trip

Re: [CF-metadata] CF compliant tripolar grid representation

2017-03-30 Thread Jim Biard
Karl, I think Sébastien raises some valid questions regarding appropriate standard names and best form for specifying that the coordinate system is a tripolar grid. The projection_x_coordinate and projection_y_coordinate definitions state " The relationship between the projection coordinates

Re: [CF-metadata] CF compliant tripolar grid representation

2017-03-30 Thread Sebastien Villaume
Dear Jim and Karl, thank you for your quick answers. Karl, it seems that the tripolar grid mentioned in the link you sent is defined in this paper: Murray, R. J., 1996: Explicit generation of orthogonal grids for ocean models. Journal of Computational Physics, 126, 251-273 which is cited by t

Re: [CF-metadata] CF compliant tripolar grid representation

2017-03-30 Thread James Orr
The IPSL and CNRM cimate models that participated in CMIP5 both used the NEMO model (ORCA2 and ORCA1 configurations) with tripolar grids. Both provided output the was CF compliant. James On Thu, 30 Mar 2017, Karl Taylor wrote: Hi Sebastien, More than one group stored output on a tripolar g