Standard names: Propose new names for sea ice biogeochemical parameters for use in SIMIP and CMIP7

[letitede]

As discussed within the Sea Ice Model Intercomparison Project (SIMIP) for CMIP7, I would like to propose some new standard names in relation to sea-ice biogeochemistry.

Name: sichl
Title: Amount of Total Ice Algae Expressed as Chlorophyll in Sea Ice
CF Standard Name: amount_ice_algae_expressed_as_chlorophyll_in_sea_ice
Units: Kg m-2
Description: Sum of chlorophyll from all ice algal group concentrations.

Name: sic
Title: Total Ice Algal Carbon Amount
CF Standard Name: mole_content_of_ice_algae_expressed_as_carbon_in_sea_ice
Units: mol m-2
Description: Sum of ice algal carbon component content.

Name: sino3
Title: Dissolved Nitrate Amount in Sea Ice
CF Standard Name: mole_amount_of_nitrate_in_sea_ice
Units: mol m-2
Description: Mole amount means moles of substance per unit area.

Name: sisi
Title: Dissolved Silicon Amount in Sea Ice
CF Standard Name: mole_amount_of_silicon_in_sea_ice
Units: mol m-2
Description: Mole amount means moles of substance per unit area.

Name: sigpp
Title: Gross primary production in sea ice as carbon amount flux
CF Standard Name: gross_primary_productivity_of_biomass_expressed_as_carbon_in_sea_ice
Units: kg m-2 s
Description: Total GPP of ice algae in sea ice.

Thanks for considering this proposal.

Proposer's name: Letizia Tedesco
Date: 12 September 2024

[github-actions]

Thank you for your proposal. These terms will be added to the cfeditor (http://cfeditor.ceda.ac.uk/proposals/1) shortly. Your proposal will then be reviewed and commented on by the community and Standard Names moderator.

[JonathanGregory]

Dear Letizia @letitede

Thanks for your proposals.

We use the phrase in_sea_ice for intensive properties of the material, as with in_air and in_sea_water. Your quantities are extensive properties of the whole layer, for which we put sea_ice at the front instead like e.g. the existing standard name sea_ice_mass_content_of_salt and many ocean_mole_content_... and ocean_mass_content_... standard names. Following this pattern, your proposed "amount" names would be

sea_ice_mass_content_of_ice_algae_expressed_as_chlorophyll
sea_ice_mole_content_of_ice_algae_expressed_as_carbon
sea_ice_mole_content_of_nitrate
sea_ice_mole_content_of_silicon

For the last one, I would suggest we include by_ice_algae, since they're doing the production, like with e.g. tendency_of_mole_concentration_of_particulate_organic_matter_expressed_as_carbon_in_sea_water_due_to_net_primary_production_by_diatoms. That would make it

gross_primary_productivity_of_biomass_expressed_as_carbon_due_to_ice_algae_in_sea_ice

Does that make sense? I think this one should be in kg m-2 s-1.

It would be helpful to have an opinion from @roy-lowry on "ice algae".

Best wishes

Jonathan

[taylor13]

Regarding Jonathan's rewording ..."due to ice algae in sea ice". Are there any other kinds of algae in sea ice? If not, perhaps "due to algae in sea ice" would do.
Karl