Dear Martin OK. If that is the correct assumption, maybe your new quantity could be called
fraction_of_surface_downwelling_photosynthetic_radiative_flux_absorbed_by_vegetation Best wishes Jonathan ----- Forwarded message from "Claverie, Martin (GSFC-6190)[Science Collaborator]" <[email protected]> ----- > Date: Wed, 6 May 2015 17:50:01 +0000 > From: "Claverie, Martin (GSFC-6190)[Science Collaborator]" > <[email protected]> > To: Jonathan Gregory <[email protected]>, "[email protected]" > <[email protected]> > Subject: RE: [CF-metadata] New standard name request for FAPAR > > Dear Jonathan > > I think your assumption is correct : "the fraction of the > [surface_downwelling_photosynthetic_radiative_flux_in_air] which is absorbed > by the vegetation". > > However I need to check that > surface_downwelling_photosynthetic_radiative_flux_in_air is equivalent to > what we called in my community the "Photosynthetically active radiation". > > If so, we could mention > surface_downwelling_photosynthetic_radiative_flux_in_air variable in the > FAPAR definition. > > ********** > definition: > The fraction of incoming solar radiation in the photosynthetically active > radiation spectral region (equivalent to > surface_downwelling_photosynthetic_radiative_flux_in_air) that is absorbed by > a vegetation canopy. > ********** > > best regards > > Martin > ________________________________________ > From: Jonathan Gregory [[email protected]] > Sent: Wednesday, May 06, 2015 1:30 PM > To: [email protected] > Cc: Claverie, Martin (GSFC-6190)[Science Collaborator] > Subject: Re: [CF-metadata] New standard name request for FAPAR > > Dear Martin > > > I am proposing the following standard name for Fraction of Absorbed > > Photosynthetically Active Radiation (FAPAR), which is a GCOS Essential > > Climate Variable (ECV). > > > > standard name: > > fraction_of_absorbed_photosynthetically_active_radiation > > > > definition: > > The fraction of incoming solar radiation in the photosynthetically active > > radiation spectral region that is absorbed by a vegetation canopy. > > > > canonical units: > > 1 > > We have an existing standard name of > surface_downwelling_photosynthetic_radiative_flux_in_air > and I assume your proposal means the fraction of this which is absorbed by > the vegetation. Is that right? If so, it would be better to add to this > existing name (without in_air, I think) to make the new one. > > Best wishes > > Jonathan ----- End forwarded message ----- _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
