Code and core processed data for AlphaEarth small surface water mapping in the Yangtze River Delta

Compact archive containing code, Google Earth Engine script, the final 5,348-point Yangtze River Delta reference sample, and core processed tables that support the main quantitative claims in a Geophysical Research Letters manuscript on AlphaEarth small surface water mapping.本紧凑存档包内含代码、谷歌地球引擎（Google Earth Engine）脚本、最终版5348采样点长江三角洲参考样本集，以及支撑《地球物理研究快报》（Geophysical Research Letters）一篇关于AlphaEarth小型地表水体制图的研究手稿中全部核心量化结论的核心处理表格。