全球陆地蒸散发数据集（2001-2018）

陆地蒸散发（ET）作为全球地表能量交换与水循环中的关键纽带，时空连续的ET估算对于相关研究意义重大。该数据集利用一个改进的生态水文模型（SiTHv2）对全球逐日陆地蒸散发进行了估算。驱动数据主要包括：1）净辐射；2）气温；3）降水；4）气压；5）叶面积指数；6）地表覆盖类型。经过在站点尺度 （RMSE=0.66 mm/day）、流域尺度（RMSE=97.75 mm/year）、以及全球尺度的验证和对比，该数据集提供的全球ET估算结果表现可靠。这将为生态水文相关研究，如陆气交互过程、生态系统耗水、极端气候事件、以及水资源管理等领域提供必要的数据支持。

Land evapotranspiration (ET) serves as a critical link in global surface energy exchange and the water cycle. Spatially and temporally continuous ET estimation is of great importance for relevant research. This dataset estimates global daily terrestrial evapotranspiration using an improved ecohydrological model (SiTHv2). The driving datasets mainly include: 1) Net radiation; 2) Air temperature; 3) Precipitation; 4) Air pressure; 5) Leaf area index; 6) Land cover type. Following validation and cross-comparison at the site scale (RMSE=0.66 mm/day), watershed scale (RMSE=97.75 mm/year), and global scale, the global ET estimates derived from this dataset exhibit reliable performance. This will offer essential data support for research in ecohydrology-related fields, including land-atmosphere interaction processes, ecosystem water consumption, extreme climate events, and water resources management.