Burkhardt,
yes, makes sense to me. I'm sure Jonathan Gregory will weigh in on this
too.
I just noticed in the description of "surface" you quoted below, it says
"over sea areas this is taken to be the mean sea level". This should
perhaps read "over *ice-free* sea areas this is taken to be the mean sea
level".
Karl
Burkhardt.Rockel at gkss.de wrote:
>
> Karl, thank you for the prompt reply.
>
> > If you have a
> > grid-cell (or a larger region) over which you want to characterize a
> > snow surface temperature, distinct from the temperature of the snow-free
> > portion, then we do indeed need a new name.
>
> exactly that is why I proposed the name.
> I constructed it similar to already existing standard names, for example:
>
> "surface_snow_thickness_where_sea_ice
> The surface called "surface" means the lower boundary of the atmosphere;
> over sea areas this is taken to be mean sea level. Unless indicated, a
> quantity is assumed to apply to the whole area of each horizontal grid
> box. The qualifier where_/type/ specifies instead that the quantity
> applies only to the part of the grid box of the named /type/."
>
> Regards,
> Burkhardt
>
>
> Karl Taylor <taylor13 at llnl.gov> schrieb am 27.01.2006 17:58:10:
>
> > Dear all,
> >
> > Actually, the standard name "surface_temperature" refers, I believe, to
> > the "skin" temperature at the interface between the atmosphere, and
> > whatever solid or liquid surface underlies it (i.e., sea ice, ocean,
> > snow, glacial ice, bare land, vegetated land, etc), so
> > surface_temperature and surface_temperature_where_snow would be
> > identical if an entire region were snow covered. If you have a
> > grid-cell (or a larger region) over which you want to characterize a
> > snow surface temperature, distinct from the temperature of the snow-free
> > portion, then we do indeed need a new name.
> >
> > I note that we define sea_surface_temperature, so that we can
> > characterize ocean surface temperature distinct from surface temperature
> > where there is seaice or land. Actually, I am not absolutely sure
> > whether sea_surface_temperature should be an average of the surface
> > temperature of the ocean only in areas where it is in direct contact
> > with the atmosphere, or if the surface of the ocean under sea ice
> > (presumably at the freezing point) should also contribute. I would vote
> > for the first definition.
> >
> > regards,
> > Karl
> >
> > Burkhardt.Rockel at gkss.de wrote:
> > >
> > > Dear All,
> > >
> > > I need to define the surface temperature (i.e. the temperature at the
> > > interface between snow and atmosphere, this is NOT the bulk snow
> > > temperature) for the part of the model grid box covered by snow.
> > > I propose a the following standard name for it:
> > >
> > > surface_temperature_where_snow (K)
> > >
> > > is this ok?
> > >
> > > Regards
> > > Burkhardt
> > >
> > >
> > >
> > >
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Received on Fri Jan 27 2006 - 11:11:10 GMT
