Dear Karl,
>
> 2) In the following names, is there an expectation that "harmonic_period" will always be provided along with the phase and amplitude? If not, then
> the period should probably be part of the phase and amplitude standard names.
>
>
> phase_of_global_average_sea_level_change (degree)
> harmonic_period (s)
> amplitude_of_global_average_sea_level_change (m)
>
The definitions of the phase and amplitude names both contain the sentence "A coordinate variable of harmonic_period can be used to specify the period of the sinusoidal wave" although this could easily be strengthened to say "should be used to specify". Olivier's original proposals (
http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2012/033559.html) contained separate entries for annual phase, semiannual phase, annual amplitude and semiannual amplitude. During the discussion it was decided that the period of oscillation would be better separated out into a coordinate variable rather than introducing multiple new standard names for concepts that are essentially the same quantity except for the period. I can make the small change to the definitions at the next update, if Olivier agrees.
Best wishes,
Alison
------
Alison Pamment Tel: +44 1235 778065
NCAS/British Atmospheric Data Centre Email: alison.pamment at stfc.ac.uk
STFC Rutherford Appleton Laboratory
R25, 2.22
Harwell Oxford, Didcot, OX11 0QX, U.K.
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Received on Mon Nov 11 2013 - 07:33:23 GMT
