FLUXCOM-X monthly net ecosystem exchange on global 0.5 degree grid for 2005

X-BASE NEE is based on the FLUXCOM-X framework which trains machine learning models on in-situ eddy covariance data and uses them to produce this global product. The X-BASE experiment is a basic configuration to serve as a baseline for the FLUXCOM-X framework and includes as predictors the core meteorlogical data, plant functional type classification as well as MODIS based vegitation indicies and land surface temperature. XGBoost was used as the machine learning algorithm. The GPP estimates from the eddy covariance data was based on the Nighttime Partitioning method.

Published paper: https://egusphere.copernicus.org/preprints/2024/egusphere-2024-165/
Nelson, J.A., Walther, S., Jung, M., Gans, F., Kraft, B., Weber, U., Hamdi, Z., Duveiller, G., Zhang, W., 2023. FLUXCOM-X-BASE. https://doi.org/10.18160/5NZG-JMJE

X-BASE NEE 数据集基于 FLUXCOM-X 框架构建，该框架通过在原位涡度协方差数据上训练机器学习模型，并利用这些模型生成全球产品。X-BASE 实验作为 FLUXCOM-X 框架的基本配置，旨在作为基准，其中包含核心气象数据、植被功能类型分类以及基于 MODIS 的植被指数和地表温度作为预测因子。该实验采用了 XGBoost 作为机器学习算法。涡度协方差数据中的GPP（总初级生产力）估计基于夜间分合法。