HiQ-FPAR: a High-Quality and Value-added MODIS Global FPAR Product from 2000 to 2023

The High-Quality Fraction of absorbed Photosynthetically Active Radiation (HiQ-FPAR) is derived from the reprocessed MODIS FPAR C6.1 product using the Spatio-Temporal Information Compositing Algorithm (STICA). This method integrates pixel quality information, spatio-temporal correlations, and original observations to enhance raw MODIS FPAR retrievals under poor conditions. HiQ-FPAR covers the period 2000–2023 with global coverage at 500 m and 5 km spatial resolutions and an 8-day temporal resolution. Ground-based validation demonstrates that HiQ-FPAR outperforms the original MOD15A2H C6.1 product, showing reduced anomalous fluctuations and improved alignment with phenological patterns. The dataset is available on Zenodo and a 500 m version is accessible via Google Earth Engine.