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