Hello,
There is no mention of snow or surface melt water (ponds). Should
something explicit be said about including/excluding these in any of
definitions below? Also, if I understand correctly, I would be explicit
that
"Land ice" means glaciers, ice-caps and ice-sheets resting on bedrock
and also includes ice-shelves. "Fern" is included as part of "land ice".
cheers,
Karl
On 1/25/12 5:44 AM, Tamsin Edwards wrote:
> Hello,
>
> I would like to request the following new standard names and one
> deprecation. I've attempted to give definitions that are consistent with
> related names in the table.
>
>
> 1. land_ice_mass_accumulation_rate (m s-1)
>
> "Land ice" means glaciers, ice-caps and ice-sheets resting on bedrock
> and also includes ice-shelves. The accumulation rate is the rate at
> which ice is added per unit area at the land ice surface.
>
> 2. runoff_rate (m s-1)
>
> Runoff is the liquid water which drains from land. If not specified,
> "runoff" refers to the sum of surface runoff and subsurface drainage.
> The runoff rate is the rate at which water is lost per unit area.
>
> 3. land_ice_basal_altitude (m)
>
> "Land ice" means glaciers, ice-caps and ice-sheets resting on bedrock
> and also includes ice-shelves. Altitude is the (geometric) height above
> the geoid, which is the reference geopotential surface. The geoid is
> similar to mean sea level. Basal altitude is the altitude of the base of
> the ice.
>
> 4. land_ice_thickness_excluding_firn (m)
>
> "Land ice" means glaciers, ice-caps and ice-sheets resting on bedrock
> and also includes ice-shelves. "Firn" means partially-compacted snow on
> the land ice surface. "Thickness" means the vertical extent of a layer.
> Land ice thickness excluding firn means thickness of only the land ice
> and not the firn layer.
>
> 5. firn_thickness (m)
>
> "Firn" means partially-compacted snow on the land ice surface.
> "Thickness" means the vertical extent of a layer. Firn thickness means
> thickness of the firn layer.
>
> 6. land_ice_and_firn_thickness (m)
>
> "Land ice" means glaciers, ice-caps and ice-sheets resting on bedrock
> and also includes ice-shelves. "Firn" means partially-compacted snow on
> the land ice surface. "Thickness" means the vertical extent of a layer.
> Land ice and firn thickness means the total thickness of land ice and
> the firn layer.
>
> 7. land_ice_and_firn_thickness_expressed_as_ice_equivalent (m)
>
> "Land ice" means glaciers, ice-caps and ice-sheets resting on bedrock
> and also includes ice-shelves. "Firn" means partially-compacted snow on
> the land ice surface. "Thickness" means the vertical extent of a layer.
> Land ice and firn thickness expressed as ice equivalent means the total
> thickness of land ice and the firn layer if the firn were converted to ice.
>
>
> I would like to propose that land_ice_thickness be deprecated due to
> vagueness.
>
> Best wishes,
>
> Tamsin
>
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Received on Wed Jan 25 2012 - 09:43:45 GMT
