forrest@0: For the monthly files from L4 Ameriflux, we are comparing the
forrest@0: following quantities with the models:
forrest@0: 
forrest@0: H_f                       This is sensible heat flux, in units of
forrest@0: W/m2/day according to Ameriflux documentation
forrest@0: LE_f                     This is latent heat flux, in units of
forrest@0: W/m2/day according to Ameriflux documentation
forrest@0: Rg_f                      This is global radiation, in units of MJ/m2/day
forrest@0: Reco_or                This is the ecosystem respiration flux, in
forrest@0: units of gC/m2/day
forrest@0: NEE_or_fMDS     This is the net ecosystem exchange flux, in units of
forrest@0: gC/m2/day
forrest@0: GPP_or_MDS      This is the gross primary production flux, in units
forrest@0: of gC/m2/day
forrest@0: 
forrest@0: I do not personally understand the H and LE units for the
forrest@0: observations and have asked Ameriflux for clarification. Please skip for now.
forrest@0: 
forrest@0: For Rg_f, please compare with the model variable SOLAR. Please label:
forrest@0: Shortwave incoming (Wm-2)
forrest@0: To convert Rg_f to units of Wm-2:
forrest@0: 
forrest@0: X MJ/m2/day * (1 x 10^6 J/MJ)/(24*3600s/day) = Y Wm-2
forrest@0: 
forrest@0: For Reco_or please compare with the sum of model variables ar and hr.
forrest@0: Please label: Re (gC/m2/day)
forrest@0: For NEE_or_fMDS please compare with model variable nep. Please label
forrest@0: NEE (gC/m2/day) 
forrest@0: For GPP_or_MDS please compare with model variable gpp. Please label
forrest@0: GPP (gC/m2/day) 
forrest@0: 
forrest@0: The last three model variables have units of KgC/m2/s.  To convert to
forrest@0: gC/m2/day, please use this approach:
forrest@0: 
forrest@0: X Kg C/m2/s *(1000 g C/Kg C)*(3600*24 s/day) = Y gC/m2/day
forrest@0: 
forrest@0: Jim