Dear Olivier, Craig and Bryan,
I'm afraid the slow response on this set of proposals is largely down to me - I've been concentrating on getting the standard name table updated and trying to put together a proposal for the trac system on the subject of ensembles. (I'm also working reduced hours in July and August due to school holidays in the UK.) Anyway, apologies for the delay and please see below for my replies.
>
> Dear all,
>
> A few weeks ago a new topic was proposed about standard names for sea
> surface temperature data sets, I'm a little bit disappointed since I
> haven't read anything about it..In the e-mail I got, it was suggested to
> introduce some new standards names like "Sub-skin_SST" or
> "skin_layer_SST",
> and I personnaly agree in principle with this idea (it allows to
> distinguish microwave and infrared SST)..Did something happen on this
> discussion on some other mailing-lists?
>
> Thank you
>
> Kind regards
>
> Olivier.
> Le 09:16 28/06/2007,Bryan Lawrence ?crit:
>
> >Hi Craig
> >
> >There are two key steps to getting your proposals into CF. The first is
> to
> >actually propose them, and the second is to take part in the discussion.
> Both
> >happen on the cf mailing list.
> >(cf-metadata at cgd.ucar.edu, register at
> >http://www.cgd.ucar.edu/mailman/listinfo/cf-metadata).
> >
> >I've copied this email to the mailing list, so we've achieved the first
> >step, but you'll need to register so you can guide them through any
> ensuing
> >discussion.
> >
> >Cheers
> >Bryan
> >
> >On Wednesday 27 June 2007 12:57:18 Craig Donlon wrote:
> > > Hi Bryan:
> > > Hope all is well. I have an action form the last GHRSST-PP science
> Team
> > > meeting to request that the CF-1.0 community register several standard
> > > names for use with SST data sets as follows:
> > >
> > > Acronym, Short, long, description
> > > SSTfnd, Foundation_Temperature, foundation_sea_surface_temperature,
> > > temperature free of diurnal variability
Please can you explain this one a bit more? I looked at
http://ghrsst-pp.metoffice.com/pages/sst_definitions/ and I see that this is a bulk temperature representative of the base of the diurnal thermocline. Does this mean that the foundation temperature is measured/modelled at the base of the thermocline so that the values are intrinsically free of diurnal variation, or is the diurnal variation statistically removed from the data?
Regarding the name itself, the standard name guidelines do not currently define a surface called "foundation", but perhaps we could introduce one if it is a commonly used term for the base of the diurnal thermocline. An alternative approach would be to have a more verbose standard name such as sea_surface_temperature_at_diurnal_thermocline_base which might be clearer. Do you agree?
> > > SSTz,SST_depth, sea_surface_temperature_at_depth_z, SST at depth z -
> e.g.
> > > reported as SST5m
We already have the standard name sea_water_temperature which is defined as follows: "For the temperature of sea water at a particular depth or layer, a data variable of sea_water_temperature with a vertical coordinate axis should be used." Would this meet your needs?
I suppose one could even use the name "sea_surface_temperature", which is already in the table, with a scalar coordinate variable to specify exactly where the "sea_surface" is. In either case, it is a general rule in standard names that a specific value of a coordinate should be contained in a scalar coordinate variable rather than being part of the name itself.
> > > SSTsubskin, Sub-skin_SST, sub-skin_sea_surface_temperature, SST at a
> depth
> > > of 1-1.5mm as measured by a microwave radiometer operating in the 6-
> 10GHz
> > > frequency
> > > SSTskin, skin_layer_SST, skin_layer_sea_surface_temperature, SST at a
> depth
> > > of 10-20um as measureed by an infrared radiometer operating in the
> > > 3.5-13umfrequency
There are clearly two distinct and well defined physical quantities here so I think they probably should have separate standard names. I would rearrange them slightly to:
sea_surface_temperature_in_subskin_layer
sea_surface_temperature_in_skin_layer
OK?
> > > SSTint,interface_SST, interface_sea_surface_temperature,theoretical
> SST at
> > > the exact air sea interface that cannot be measured using currnt
> technology
We already have the standard name surface_temperature which is defined as follows: "The surface called "surface" means the lower boundary of the atmosphere. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below." I think that this sounds like the same quantity - do you agree?
> > >
> > > Can you help me through the process of formal registration please?
> > > Take care and all the best,
> > > Craig
> >
Best wishes,
Alison
------
Alison Pamment Tel: +44 1235 778065
NCAS/British Atmospheric Data Centre Fax: +44 1235 446314
Rutherford Appleton Laboratory Email: J.A.Pamment at rl.ac.uk
Chilton, Didcot, OX11 0QX, U.K.
Received on Wed Jul 18 2007 - 20:21:13 BST
