Sentinel-2 MSI - Level 2A (MAJA Tiles) - Germany

This collection contains Sentinel-2 Level 2A surface reflectances, which are computed for the country of Germany using the time-series based MAJA processor. During the Level 2A processing, the data are corrected for atmospheric effects and clouds and their shadows are detected. The MAJA L2A product is available online for the last 12 months. Further data are kept in the archive and are available upon request. Please see https://logiciels.cnes.fr/en/content/maja for additional information on the MAJA product. The MAJA product offers an alternative to the official ESA L2A product and has been processed with consideration of the characteristics of the Sentinel-2 mission (fast collection of time series, constant sensor perspective, and global coverage). Assumptions about the temporal constancy of the ground cover are taken into account for a robust detection of clouds and a more flexible determination of aerosol properties. As a result, an improved determination of the reflectance of sunlight at the earth's surface (pixel values of the multispectral image) is derived. Further Sentinel-2 Level 2A data computed using MAJA are available on the following website: https://theia.cnes.fr

本数据集汇集了德国地区的Sentinel-2级别2A地表反射率数据，这些数据通过基于时间序列的MAJA处理器进行计算。在2A级别处理过程中，数据经过大气效应和云及其阴影的校正，并对其进行了检测。MAJA L2A产品可在网上查询，覆盖过去12个月的记录。此外，存档中保留的进一步数据可根据需求提供。有关MAJA产品的详细信息，请参阅https://logiciels.cnes.fr/en/content/maja。MAJA产品作为官方欧洲航天局（ESA）L2A产品的替代方案，充分考虑了Sentinel-2任务的特点（快速时间序列收集、恒定传感器视角以及全球覆盖）。在云的稳健检测和气溶胶特性的灵活确定方面，考虑了地表覆盖的时间一致性假设，从而实现了对地表太阳光反射率（多光谱图像的像素值）的更精确测定。使用MAJA计算的其他Sentinel-2级别2A数据可在以下网站上获取：https://theia.cnes.fr