Hello Jonathan,
good questions. The terrestrial water amount certainly includes ice, and I believe it includes ice sheets (see, e.g. https://www.aaas.org/news/changes-land-water-storage-and-melting-ice-sheets-drive-polar-motion ), but might exclude floating ice sheets. Jean-Yves, can you comment on whether TWS should include floating ice shelves and/or ice sheets? For lightning flashes, I agree: frequency_of_lightning_flashes_per_unit_area is better, regards, Martin ________________________________ From: CF-metadata <[email protected]> on behalf of Jonathan Gregory <[email protected]> Sent: 02 May 2018 17:37 To: [email protected] Subject: [CF-metadata] Fwd: PMIP: standard names for the CMIP6 data request: tws, lighning flashes, wetland emissions, etc Dear Martin > (1.1) mrtws Terrestrial Water Storage [kg m-2] > > land_based_water_amount > > “This quantity is often known as Terrestrial Water Storage.. It includes > surface water (water in rivers, wetlands, lakes, snow, vegetation and > reservoirs) and subsurface water (soil moisture, groundwater)” That's good, but I think that land_water_amount would be better. The phrase "land water(s)" is sometimes used for terrestrial water storage, and it is analogous to land_ice. However, that raises the question of whether land_ice is specifically excluded from this quantity. I think it might be, and if so, should it be land_liquid_water? Is permafrost also included? - if so, we will have to be even more precise in order to include frozen water in soil and snow but exclude glaciers and ice sheets! > (1.2) Flashrate Lightning flash rate [km-2 s-1] > > frequency_of_lightning_flash_per_unit_area I suppose that "flashes" might sound more natural. Best wishes Jonathan _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
