Abstract. Measurements of the spatiotemporal dynamics of lake and reservoir water storage are fundamental in the assessment of the influence of climate variability and anthropogenic activities on water quantity and quality, as well as wetland ecology and the estimating greenhouse gas emissions from lakes. Previous studies estimated relative water volume changes for lakes where both satellite-derived extent and radar altimetry data are available. This approach is limited to only few hundreds of lakes worldwide. In this study, the number of measured lakes was increased by a factor 400 using high-resolution Landsat and Sentinel-2 optical remote sensing and ICESat-2 laser altimetry in addition to radar altimetry from the Topex/Poseidon, Jason-1, -2 and -3, and Sentinel-3 instruments. Time series of relative (i.e., storage change) or absolute (i.e., total stored volume) storage for more than 170,000 lakes globally with a surface area of at least 1 km² (representing 99 % of the total volume of all water stored in lakes and reservoirs globally) were retrieved. Within these, we were able to develop an automated workflow for near real-time global lake monitoring of more than 27,000 lakes. The historical and near real-time lake storage dynamics data for 1984 to current are publicly available through https://doi.org/10.25914/K8ZF-6G46 (Hou et al., 2022).

中文翻译：

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GloLakes：从 1984 年至今的全球湖泊蓄水动态数据库，使用激光和雷达测高以及光学遥感得出

摘要。测量湖泊和水库蓄水的时空动态对于评估气候变率和人为活动对水量和水质的影响，以及湿地生态学和湖泊温室气体排放量的估算至关重要。以前的研究估计了湖泊的相对水量变化，其中卫星衍生的范围和雷达测高数据都可用。这种方法仅限于全球数百个湖泊。在这项研究中，使用高分辨率 Landsat 和 Sentinel-2 光学遥感以及 ICESat-2 激光测高以及来自 Topex/Poseidon、Jason-1、-2 的雷达测高，测量的湖泊数量增加了 400 倍-3 和 Sentinel-3 仪器。相对（即，存储变化）或绝对（即，²（占全球湖泊和水库中储存的所有水总量的 99%）被检索到。在其中，我们能够开发一个自动化工作流程，用于对 27,000 多个湖泊进行近乎实时的全球湖泊监测。1984 年至今的历史和近实时湖泊蓄水动态数据可通过 https://doi.org/10.25914/K8ZF-6G46 公开获得（Hou 等，2022）。