“一带一路”生态环境遥感监测范围地表实际蒸散发数据集（2015）

蒸散是土壤-植物-大气连续体中水分运动的重要过程，包括蒸发和蒸腾，蒸发是水由液态或固态转化为气态的过程，蒸腾是水分经由植物的茎叶散逸到大气中的过程。本报告根据遥感产品和欧洲中期天气预报中心ECMWF大气再分析数据生产的2010~2015年蒸散产品空间范围覆盖全球，空间分辨率为1km，时间分辨率为1天，利用涡动相关站点潜热通量观测数据对蒸散产品进行精度评价，多数站点的产品精度达到80%以上。

Evapotranspiration (ET) is a pivotal process of water movement in the soil-plant-atmosphere continuum, which comprises two components: evaporation and transpiration. Evaporation refers to the process where water transforms from liquid or solid states into the gaseous phase, while transpiration is the process by which water is released from plant stems and leaves into the atmosphere. This report presents an evapotranspiration product spanning 2010 to 2015, which was developed based on remote sensing products and atmospheric reanalysis data from the European Centre for Medium-Range Weather Forecasts (ECMWF). The product has global spatial coverage, with a spatial resolution of 1 km and a temporal resolution of 1 day. The accuracy of this ET product was validated using in-situ latent heat flux observations from eddy covariance flux towers, and the product achieved an accuracy of over 80% at most of the validation sites.

搜集汇总

背景与挑战

背景概述

该数据集是2015年‘一带一路’生态环境遥感监测范围的地表实际蒸散发数据，基于遥感产品和ECMWF大气再分析数据生产，覆盖全球，空间分辨率为1km，时间分辨率为1天，时间跨度为2010-2015年。数据集通过涡动相关站点观测数据验证，多数站点精度超过80%，适用于生态环境监测和水资源管理研究。