Dataset on green tide surfaces over Brittany using Landsat imagery for 35 years of monitoring

This dataset details all data used for a manuscript submission entitled "Spotting green tides over Brittany from space: three decades of monitoring with Landsat imagery". It presents data derived from Earth observation detection on the macroalgae surface on four studied sites in Brittany, France. These estimates were made using Landsat 5 and 8 satellite imagery, using the Google Earth Engine environment. Spectral signatures of natural features found on the study sites (sand, water and algae) are also presented. Additional datasets include 1) green macroalgae surface estimates made by an external source, CEVA (French Algae Technology and Innovation Center) and derived from aerial photography. This data was used for comparison with our results 2) nitrogen concentrations for four water stations close to the study sites. Nitrogen is considered the main physico-chemical factor controlling algae growth.

本数据集完整收录了投稿论文《从太空监测布列塔尼海域绿潮：基于Landsat影像的三十年观测》所用的全部数据。数据集涵盖法国布列塔尼地区4处研究站点的大型藻类地表面积地球观测估算结果，上述估算依托Landsat 5与Landsat 8卫星影像，在谷歌地球引擎（Google Earth Engine）平台完成。研究站点内自然地物（沙滩、水体与藻类）的光谱特征亦同步收录。附加数据集包含两部分：1）由外部机构法国藻类技术与创新中心（CEVA）基于航空摄影获取的大型绿藻地表面积估算数据，该数据用于与本研究结果开展对比验证；2）研究站点周边4处水文监测站的氮浓度数据，氮被视作调控藻类生长的主要理化因子。