Distance of Earth-Sun

[Igor]

Hi, Daniel

Data Sentinel-2A L1C MSI already have TOA Reflectance. According to the documentation, You must divide the pixel value by the value of QUANTIFICATION_VALUE:

rTOA = DN / QUANTIFICATION_VALUE

Possible also some deviation in DN from the desired range. For example:

The QUANTIFICATION_VALUE has a true value (DN to TOA Reflectance)?

Dear experts! How to obtain the values of the TOA Reflectance L1C data when more than QUANTIFICATION_VALUE? Give a reply please. Hello! A question about a product Sentinel-2A MSI (L1C), which can be freely accessed through Sentinels Scientific Data Hub. There is a file from the granules in JPEG2000 format. Using the program opj_decompress from the package SNAP I converted the data to GeoTIFF format. For example: Product: https://scihub.copernicus.eu/dhus/odata/v1/Products(‘92643e16-9b9e-4…

For BOA Reflectance – use, for example, SEN2COR package:
https://github.com/umwilm/SEN2COR