Radar derived seasonal surface water maps for three Indian districts (Shivamogga, Sindhudurg, Wayanad), 2017-2018

Data provided are monthly surface water layers extracted from Sentinel1A SAR data for 3 districts in India (Shivamogga, Sindhudurg, Wayanad) for the year 2017 and 2018. Surface water body layers were mapped using an average monthly threshold value extracted from the image backscatter histogram. The average threshold value excluded the monsoon months due to the difference in water and not water area. The threshold value was slightly lesser than the mean threshold value. The end product was validated using field data which resulted in user and producer accuracies. Monthly surface water body layers were not produced for a few months due to the non-availability of Sentinel 1 data. The work was supported by MRC, AHRC, BBSRC, ESRC and NERC [grant number MR/P024335/1] and NERC - SUNRISE project [grant number NE/R000131/1] Full details about this dataset can be found at https://doi.org/10.5285/3c23fea1-5b27-4b01-b9ef-fc13346cfedc

本数据集提供了来自印度三个区域（Shivamogga、Sindhudurg、Wayanad）2017年和2018年的Sentinel-1A合成孔径雷达（SAR）数据提取的月度地表水体层。地表水体层通过从图像后向散射直方图中提取的平均月度阈值值进行映射。平均阈值值排除了季风月份，因为此时水域与非水域面积存在差异。阈值值略低于平均值。最终产品通过实地数据进行验证，从而获得了用户和生产者精度。由于Sentinel-1数据的不可用，某些月份未生成月度地表水体层。本研究得到了MRC、AHRC、BBSRC、ESRC和NERC的支持[资助编号MR/P024335/1]以及NERC-SUNRISE项目[资助编号NE/R000131/1]的资助。关于本数据集的详细信息，请访问https://doi.org/10.5285/3c23fea1-5b27-4b01-b9ef-fc13346cfedc。