[CF-metadata] Standard names for LS3MIP: 8 temporal changes + 1 feature depth

From: Martin Juckes - UKRI STFC <martin.juckes>
Date: Thu, 17 May 2018 15:50:01 +0000

Dear All,

Following some discussion with Hyungjun, I'd like to propose the following new standard names to support the LS3MIP CMIP6 data request.

1. Changes over time

1.1 dcw Change in Interception Storage [kg m-2]
The standard name ?canopy_water_amount? exists.
+ Propose: change_over_time_in_canopy_water_amount

1.2 dgw Change in Groundwater [kg m-2]
We do not currently have any terms specifically for groundwater, so this concept needs to be defined: the following is proposed: ?Groundwater is the subsurface water in the saturated zone.?
+ propose: change_over_time_in_groundwater_amount

1.3 drivw Change in River Storage [kg m-2]
There is no existing term for the amount of water in rivers, though there are several for the rate of flow. Such terms as exist make no explicit reference to the definition of the what is meant by river water, so a clarification note is proposed.

+ Propose: change_over_time_in_river_water_amount
+ ?River water amount refers to the water in the fluvial system (stream and floodplain)?.

1.4 dslw Change in soil moisture [kg m-2]
Relates to changes in quantity mass_content_of_water_in_soil

+ Propose: change_over_time_in_mass_content_of_water_in_soil

1.5 dsn Change in snow water equivalent (including snow and ice) [kg m-2]

The ice includes all the ice above ground, including glaciers, ice sheets and floating ice shelves.

+ Propose: change_over_time_in_surface_snow_and_ice_amount

1.6 dsw Change in Surface Water Storage [kg m-2]
Surface water storage is interpreted as terrestrial water storage, which has a recently discussed name land_water_amount.

+ Propose: change_over_time_in_land_water_amount

1.7 dtes Change in surface heat storage (excluding snow and ice) [J m-2]
Includes soil layers+canopy+any other except snow/ice.

+ Propose: change_over_time_in_thermal_energy_content_of_vegetation_and_litter_and_soil

1.8 dtesn Change in snow/ice cold content [J m-2] (CliC)
?thermal_energy_content_of_surface_snow? exists, we can extend with ?_and_ice?.

The ice includes all the ice above ground, including glaciers, ice sheets and floating ice shelves.

+ Propose: change_over_time_in_thermal_energy_content_of_surface_snow_and_ice

2. Feature depths

2.1 dmlt Depth to soil thaw [m] (CliC)
Depth from surface to the zero degree isotherm. Above this isotherm T > 0o, and below this line T < 0o.

When the surface temperature is above 0K and there is frozen soil at some point beneath the surface, thawed_soil_depth is the distance from the surface to the first 0K isotherm. When there is no thawed soil layer, the parameter should be reported as missing.

+ Proposed: thawed_soil_depth

regards,
Martin
Received on Thu May 17 2018 - 09:50:01 BST