Monitoring River Discharge Using Off-Nadir Altimetry-Derived Profiles and SAR-Derived River Width

This dataset provides supplementary materials supporting the manuscript “Monitoring River Discharge Using Off-Nadir Altimetry-Derived Profiles and SAR-Derived River Width”. The data enable reproducibility of the analysis and facilitate further research on river discharge using satellite altimetry. The dataset consists of the following components: Input_FFSAR Reach-scale water level, river slope, and river width derived from off-nadir processing and SAR imagery, used as the primary inputs for river discharge estimation. The reach id is according to the SWORD v16. mnt_FFSAR_Unconstrained River discharge estimates generated using the off-nadir FFSAR inputs and the SWOT-Confluence workflow under unconstrained conditions. mnt_FFSAR_Constrained River discharge estimates generated using the off-nadir FFSAR inputs and the SWOT-Confluence workflow under constrained conditions. [Notes]: Discharge folder (mnt_FFSAR_Unconstrained, mnt_FFSAR_Constrained) both contains discharge estimates produced by the GeoBAM, MetroMan, MOMMA, SIC4DVar, and Consensus methods. These datasets are intended to support validation, intercomparison, and further methodological development for off-nadir river discharge estimation.本数据集为论文《利用离天底高度计剖面与合成孔径雷达（SAR）反演河宽监测河道径流量》提供补充支撑材料。该数据集可保障相关分析的可复现性，并推动基于卫星高度计的河道径流量后续研究开展。 本数据集包含以下组成部分： Input_FFSAR：通过离天底处理与合成孔径雷达（SAR）影像反演得到的河段尺度水位、河道坡度与河宽数据，作为河道径流量估算的核心输入变量。河段ID遵循SWORD v16标准定义。 mnt_FFSAR_Unconstrained：基于离天底FFSAR输入数据与SWOT-Confluence流程，在无约束条件下生成的河道径流量估算结果。 mnt_FFSAR_Constrained：基于离天底FFSAR输入数据与SWOT-Confluence流程，在约束条件下生成的河道径流量估算结果。 【注】径流量相关文件夹（mnt_FFSAR_Unconstrained、mnt_FFSAR_Constrained）内均包含GeoBAM、MetroMan、MOMMA、SIC4DVar及Consensus五种方法生成的径流量估算结果。 本数据集旨在为离天底河道径流量估算领域的验证、交叉对比与方法学进一步开发提供支持。