I read that GRASS GIS version 7.3 will be able to atmospheric correct Sentinel-2 Data. After downloading this version, which is still in development, I imported the Data and put all needed information in a text file. After launching the program i.atcorr with all necessary data, a warning message appears: "WARNING: The sun is not raised"
All information in the text file hopefully are as they needed. Has anyone alreade made experience with atmospheric correction of Sentinel-2 Date in GRASS GIS?