[CF-metadata] Standard names for Martian climate model data

From: TOYODA Eizi <toyoda>
Date: Wed, 26 Jan 2011 10:31:31 +0900

All,

Only trivial thing: "aerocentric_longitude" should be
"areocentric_longitude" ("RE" instead of "ER").

I think it's the first time to use the word "longitude" to represent a
coordinate in space, like in ecliptic longitude or galactic longitude. I'm
not inventing other wording, so my suggestion is to modify the description:

"Longitude is positive eastward; its units of degree_east (or equivalent)
indicate this explicitly. In a latitude-longitude system defined with
respect to a rotated North Pole, the standard name of grid_longitude should
be used instead of longitude. Grid longitude is positive in the
grid-eastward direction, but its units should be plain degree."

Best Regards,

-- 
Eizi TOYODA
http://www.google.com/profiles/toyoda.eizi
----- Original Message ----- 
From: <alison.pamment at stfc.ac.uk>
To: <cf-metadata at cgd.ucar.edu>; <montabone at atm.ox.ac.uk>
Sent: Tuesday, January 25, 2011 11:49 PM
Subject: [CF-metadata] Standard names for Martian climate model data
> Dear All,
>
> At BADC we are preparing to archive some data generated by a group at 
> Oxford University who are working on a climate model of the Martian 
> atmosphere.  The data will be archived as CF-compliant netCDF files. Many 
> of the model variables are the same as those used in earth simulations, 
> e.g., air temperature, u and v wind components, surface atmospheric 
> pressure, and for all these we will use existing standard names.  However, 
> there are a small number of variables for which there are no existing 
> standard names.  Therefore, we would like to propose the following new 
> names:
>
> carbon_dioxide_ice_amount; kg m-2
> This is the mass per unit area of frozen carbon dioxide on the Martian 
> surface.
>
> atmosphere_optical_thickness_due_to_dust_dry_aerosol; 1
> This follows the pattern of the existing name 
> atmosphere_optical_thickness_due_to_dust_ambient_aerosol and is defined in 
> an analogous way.
>
> aerocentric_longitude; degree
> 'Aerocentric longitude' is a widely used term within the Mars modelling 
> community and indicates the season within the Martian year according to 
> the sun's apparent motion relative to the planet's equator. Zero degrees 
> is defined as the northern hemisphere vernal equinox, i.e.,  the ascending 
> node of the apparent seasonal motion of the Sun on the planet's equator 
> [http://www.giss.nasa.gov/tools/mars24/help/notes.html]. Thus 90, 180 and 
> 270 degrees indicate, respectively, the summer solstice, autumnal equinox 
> and winter solstice.
>
> We would welcome comments on these proposals.
>
> Best wishes,
> Alison
>
> ------
> Alison Pamment                          Tel: +44 1235 778065
> NCAS/British Atmospheric Data Centre    Fax: +44 1235 446314
> STFC Rutherford Appleton Laboratory     Email: alison.pamment at stfc.ac.uk
> R25, 2.22
> Harwell Oxford, Didcot, OX11 0QX, U.K.
>
>
>
> -- 
> Scanned by iCritical.
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Received on Tue Jan 25 2011 - 18:31:31 GMT