Re: [CF-metadata] CMIP6 data request: Precipitation of solid phase water

2018-04-13 Thread Martin Juckes - UKRI STFC
Dear John, I think the primary defining characteristic is the 3-way partitioning of water into liquid, vapor and solid phases. The existing CF standard names referring to liquid and vapor phases (e.g. cloud_liquid_water_mixing_ratio, rainfall_flux, atmosphere_moles_of_water_vapor, humidity_mix

[CF-metadata] Standard Names to support Trac ticket 99

2018-04-13 Thread Lowry, Roy K.
Dear All, Here is an initial batch of 8 Standard Names to support the CF taxon dimension. Two are dimension labels whilst the other six are measurements to which the taxon is a co-ordinate. Five of these are to cover Daniel's proposal that prompted the resurrection of Ticket 99. I've present

Re: [CF-metadata] how to use ocean_mixed_layer_thickness_defined_by_*

2018-04-13 Thread Sebastien Villaume
Dear list, any more comments? can we move forward and agree on these new standard names? thanks /Sébastien - Original Message - > From: "Jonathan Gregory" > To: cf-metadata@cgd.ucar.edu > Sent: Wednesday, 11 April, 2018 18:32:30 > Subject: [CF-metadata] how to use ocean_mixed_layer_thic

Re: [CF-metadata] CMIP6 data request: Precipitation of solid phase water

2018-04-13 Thread Karl Taylor
Hi all, Just to summarize some of what has been said before I think it is pretty clear that the solid phase can take several forms, as Martin points out.  I think the more subtle issue is that frozen water is not quite the same as solid water, if we take the strict definition of freezing

Re: [CF-metadata] use of integral_wrt_depth_of_sea_water_practical_salinity

2018-04-13 Thread Sebastien Villaume
Dear Jonathan, Roy and Karl, thank you for your valuable inputs. I am not very fond of the cell_method solution: I am already very reluctant using it because it is not controlled vocabulary and it is a nightmare to parse to extract valuable metadata automatically. Now that I am discovering that

Re: [CF-metadata] use of integral_wrt_depth_of_sea_water_practical_salinity

2018-04-13 Thread Karl Taylor
Dear all, I am wary of a "slippery slope" if every calculation performed on a quantity results in a new standard name for that quantity.  We have tried to avoid that in most cases by use of the cell methods, bounds, and climatology attributes.  Isn't there some way to accommodate this in a mo

Re: [CF-metadata] use of integral_wrt_depth_of_sea_water_practical_salinity

2018-04-13 Thread Sebastien Villaume
Hi Karl, I tend to agree that this solution is far from ideal. The core issue is that there is no clear separation between a parameter (diagnostic quantities, observables, coordinates etc.) and what you do with it in CF: everything is squeezed in the standard name and in the cell_method (in a