Impacts of light use efficiency and fPAR parameterization on gross primary production modeling.

Highlights: [•] We utilized different approaches to derive LUE and fPAR and examined their capabilities for carbon modeling. [•] Both crops, maize and soybean, and deciduous forest were selected to study. [•] fAPARchl showed closer seasonal dynamics with GPP than MODIS MOD15A2 fPAR. [•] Estimated GPP using fAPARchl was closer to flux tower based GPP. [•] Using a site-specific LUEmax value derived from an analytic approach can improve GPP estimates. [Copyright &y& Elsevier]