Closed sebvi closed 1 year ago
re: https://github.com/wmo-im/CCT/wiki/Teleconference-26-and-28.4.2022
No objections but some uncertainty over which category some of the new parameters (those related to 'pure' energy as opposed to temperature etc) should go in, help requested. Sibylle to consult with experts in DWD. |
I really would like to reach a consensus as soon as possible to be able to proceed with the branch. Thank you
https://github.com/wmo-im/CCT/wiki/Teleconference-18-and-19.5.2022 note:
last table will be a new sub-category and update the table with the list of categories
During the meeting we favoured creating a new category for the energy variables. The ozone variables should be encoded using the mechanism of chemical constituents from Common Code Table 14 and a physical parameter from discipline 0 category 20.
@SibylleK : Are you happy if I call the new category for the thermodynamic parameters: "Thermodynamics properties" ?
I am happy with this proposal, but I got the comment of a colleague that maybe:
"Thermodynamics and energy forms properties"
could be another option worth considering, because kinetic and potential energies might not be associated directly with thermodynamics by everyone (but this is of course also a matter of taste).
Thank you @SibylleK for the suggestion. Maybe we could use "Thermodynamic and Energies"
I was planning to assign this new Thermodynamics category to 8 ... until I realized we somehow have an inconsistency: We don't have any entries in Code Table 4.2 for categories 8 to 12 (this is why I chose 8) but we actually have those number assigned in Code Table 4.1 (although entries 9-12 are marked as deprecated .... but not entry 8!!!):
Parameter category by product discipline,Product discipline 0 - Meteorological products,8,,Kinematic stability indices,,,,Operational Parameter category by product discipline,Product discipline 0 - Meteorological products,9,,Temperature probabilities,,,,Deprecated Parameter category by product discipline,Product discipline 0 - Meteorological products,10,,Moisture probabilities,,,,Deprecated Parameter category by product discipline,Product discipline 0 - Meteorological products,11,,Momentum probabilities,,,,Deprecated Parameter category by product discipline,Product discipline 0 - Meteorological products,12,,Mass probabilities,,,,Deprecated
I have checked in earlier version of the Code Tables (I checked version 5) and we don't seem to have ever populated this category 8.
I think this should be discussed at the meeting and possibly open a separated issue.
https://github.com/wmo-im/CCT/wiki/Teleconference-8.6.2022 notes:
@sebvi this branch has not been updated yet. will you be able to do it soon?
oh! I have it ready locally but forgot to push it ! will do it this morning sorry @amilan17 !
sorry for the delay, it is now updated
@sebvi there are inconsistency for some of Code Table 4.2 entries branch vs proposal,
category 1 - moisture in branch 154 Column integrated eastward cloud ice mass flux in proposal 154 Column integrated eastward cloud ice water mass flux
in branch 155 Column integrated northward cloud ice mass flux in proposal 155 Column integrated northward cloud ice water mass flux
in proposal 162 Column integrated divergence of cloud ice water mass flux in banch 162 Column integrated divergence of cloud ice mass flux
category 20: atmospheric chemical in proposal 80 Column integrated divergence mass flux in branch Column integrated divergence of mass flux
category 21 in proposal 10 Column integrated northward kinetic energy flux
in branch (it is typo kintic instead of kinetic) 10 Column integrated northward kintic energy flux
Ok I will update the proposal to reflect the content of the branch. I removed "water" from "cloud ice water" to be more consistent with the other occurences of "cloud ice" in Code Table 4.2, the last 2 are typos, thank you for spotting.
@sebvi the note under discipline 0 - meteorology, category 20 - Atmospheric Chemical Constituents is specific to ozone. Can you consult with relevant RD colleagues to reword the note and make it generic. Thanks
Ah yes I removed the reference to ozone at the beginning of the note but not at the end. I have edited the proposal. That said, I don't think we added the note in the branch and I don't remember why. Let me know what you want me to do: leave it as is or add the note in the branch, Thanks
Hi @amilan17, @sebvi updated the text for the note under discipline 0 - meteorology, category 20 - Atmospheric Chemical Constituents I believe we can update the note in FT2022-2 draft document. Do we have the note in the branch, I can't see it. Thanks
I can update both branch and document. Is this the new note? "The net source is the sum of all the atmospheric (chemical) processes creating and destroying constituent/aerosol of ozone in the column"
@amilan17 nope, "of ozone" is striked through... maybe I remove all the striked through text if it is confusing. :)
new note will be: "The net source is the sum of all the atmospheric (chemical) processes creating and destroying chemical constituents or aerosols in the column."
Proposer
ECMWF : Richard Mladek, Sebastien Villaume
Summary and purpose
This document proposes new GRIB2 Code Table 4.2 for parameters related to energy/water budgets.
Action proposed
The team is requested to approve the content of this proposal for inclusion with the next update of the WMO Manual on Codes.
Discussions
The tables in this proposal contain parameters (for ozone, energy, mass and water budget) that will be of crucial importance for the next phase of ECMWF Reanalysis project (ERA6) which will start its production in 2023.
Detailed proposal
add in Code Table 4.2 the following parameters:
category 14 - Trace gasescategory 20 - Atmospheric Chemical Constituentsozonemass flux1420378ozonemass flux1420479of ozonemass flux1420580of ozone(see Note )1420681add Note: The net source
of ozoneis the sum of all the atmospheric (chemical) processes creating and destroying constituent/aerosolof ozonein the column.could be Category 1 - Temperature OR Category 7 - thermodynamic stability indices (renamed "thermodynamic stability indices and properties") OR Category 19 - physical atmospheric properties OR new category XXX - thermodynamic propertiesCategory 21 - Thermodynamic propertiesXX21XX0XX21XX1XX21XX2XX21XX3XX21XX4XX21XX5XX21XX6XX21XX7XX21XX8XX21XX9XX21XX10XX21XX11XX21XX12XX21XX13XX21XX14XX21XX15XX21XX16XX21XX17XX21XX18add Notes 1: Total (atmospheric) energy is the sum of internal energy, potential energy, kinetic energy and latent heat. Same applies to energy fluxes 2: The water enthalpy (flux) is the enthalpy (flux) associated with the temperature of the water mass. 3: The water potential energy flux is the flux of potential energy associated with the water mass.