Sentinel 2 manually extracted deep water spectra with high noise levels and sunglint

This dataset includes 2.133.324 reflectance water spectra which were manually extracted by visual observation from 30 Sentinel 2 level 1C satellite images. The spectra were extracted from deep water areas with high noise levels and sunglint. The Sentinel 2 images depicted 2 tiles of the same orbit and were collected in 2016 (2 images), 2017 (19 images) and 2018 (9 images). The images contain 13 bands, 3 with 60 m spatial resolution, 4 with 10 m spatial resolution and 6 with 20 m spatial resolution. Before the spectra extraction, the bands with spatial resolution 10 and 20 m were resampled to 60 m and then the images were cropped in order to remove the land and depict optically homogenous sea regions. A figure depicting the location of the Sentinel 2 tiles (white polygons (1,2)) and the cropped tiles (red polygons (3,4)) is included in this folder. A figure depicting example scenes from which spectra were obtained through regions of interest (rois) is included as well.The spectra are stored in .csv files. Each file is named after the name of the Sentinel 2 product which includes sensing and creation date as well the relative orbit number and tile code. The content of each file includes latitude and longitude coordinates (UTM/WGS84 projection) of each spectral signature as well as the reflectance values of the 13 Sentinel 2 bands.This dataset was created for the purpose of the study described in https://www.tandfonline.com/doi/full/10.1080/01431161.2020.1714776本数据集包含2133324条水面反射光谱，均通过目视解译手动从30景哨兵2号（Sentinel 2）Level-1C级卫星影像中提取。这些光谱提取自存在高噪声与太阳耀斑的深水区。该批哨兵2号影像涵盖同一轨道的2个瓦片，采集时间分别为2016年（2景）、2017年（19景）与2018年（9景）。该影像包含13个波段，其中3个波段空间分辨率为60米，4个为10米，6个为20米。在提取光谱前，先将10米与20米分辨率的波段重采样至60米，随后对影像进行裁剪以去除陆地，保留光学均一的海域区域。本文件夹中包含一幅展示哨兵2号瓦片（白色多边形1、2）与裁剪后瓦片（红色多边形3、4）位置的示意图，同时还包含一幅展示通过感兴趣区域（ROIs，regions of interest）提取光谱的示例场景示意图。光谱数据以CSV格式存储，每个文件以对应哨兵2号产品的名称命名，该名称包含成像与生成日期、相对轨道号以及瓦片代码。每个文件的内容包含每条光谱特征的经纬度坐标（UTM/WGS84投影），以及13个哨兵2号波段的反射率数值。本数据集是为https://www.tandfonline.com/doi/full/10.1080/01431161.2020.1714776所述的研究而构建。