Global SIF-based GPP estimates

This dataset represents the attempt done within the ESA Sen4GPP project to produce a global dataset of terrestrial gross primary production (GPP) based on retrievals of sun-induced fluorescence derived from the Sentinel-5P/TROPOMI mission (Guanter et al. 2022).

SIF is scaled to GPP using empirical linear models derived and applied on a per biome basis. For details on the SIF:GPP scaling algorithm, the reader is directed to the ATBD document of the Sen4GPP project.

The dataset provide global GPP data for the period 2018-05-11 until 2021-12-29. Spatial sampling is 0.0833º and temporal sampling is 8 days. The data are stored as NetCDF files containing data on an annual basis.

Further information of some of the variables:

GPP_SIF_COR_ALL: SIF-based GPP values from a universal SIF-to-GPP linear scaling.

GPP_SIF_COR: SIF-based GPP values from a biome-based SIF-to-GPP linear scaling (reference GPP variable).

sig_GPP_SIF_COR_ALL: precision error of GPP_SIF_COR_ALL

sig_GPP_SIF_COR: precision error of GPP_SIF_COR

cloud_frac_av: 8-day average cloud fraction for each gridbox

n: number of GPP values used to calculated the average GPP for each gridbox