Please cite this: Dong, M., Liu, S., Jiang, R., Qi, J., de Solan, B., Comar, A., Li, L., Li, W., Ding, Y., & Baret, F. (2024). Comparing and combining data-driven and model-driven approaches to monitor wheat green area index with high spatio-temporal resolution satellites. Remote Sensing of Environment, 305 The GAI estimation model can be found in https://drive.google.com/file/d/1tQyfr16YaVcRHK1cTp4aDA08hkzCTN4m/view?usp=sharing