Hi all,
What does the standard name of a dimensionless vertical coordinate imply about
the meaning of the numeric values of that coordinate?
For example, if a coordinate variable has a standard name of
"atmosphere_hybrid_sigma_pressure_coordinate" does that imply it must contain
values for either a(k)+b(k) or ap(k)/p0+b(k)?
float z(z) ;
z:standard_name = "atmosphere_hybrid_sigma_pressure_coordinate"
;
z:long_name = "(delta / p0) + sigma" ;
z:units = "1" ;
z:formula_terms = "ap: delta b: sigma ps: surface_pressure" ;
z:positive = "down" ;
float delta(z) ;
delta:units = "Pa" ;
float sigma(z) ;
sigma:units = "1" ;
float surface_pressure(y, x) ;
surface_pressure:units = "Pa" ;
Or to put it another way, if it just contained values for ap(k) and appeared in
its own list of formula terms would that be invalid?
float z(z) ;
z:standard_name = "atmosphere_hybrid_sigma_pressure_coordinate"
;
z:units = "1" ;
z:formula_terms = "ap: delta b: z ps: surface_pressure" ;
z:positive = "down" ;
float delta(z) ;
delta:units = "Pa" ;
float surface_pressure(y, x) ;
surface_pressure:units = "Pa" ;
Richard Hattersley AVD Iris Technical Lead
Met Office FitzRoy Road Exeter Devon EX1 3PB United Kingdom
Tel: +44 (0)1392 885702 Fax: +44 (0)1392 885681
Email: [email protected] Website: www.metoffice.gov.uk
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