I have download a “S2A_MSIL2A” product which I understand is already atmospherically corrected (as if Sen2Cor was already applied to it), is this correct?
However, I saw that the pixel values appear to be in radiance rather than in reflectance:
is this correct?
I also tried to open an RGB of the product in SNAP unsuccessfully.
When I opened the product I found a very different order of folders from that of other Sentinel products: in the folder “GRANULE” was another folder “L2A_T20JMT_” with the “MTD_TL.xml”, which I tried to use to open the complete product in SNAP to construct an RGB however did not work…
In the folder “L2A_T20JMT_” a folder called “IMG_DATA” contains the bands in more folders separated by pixels size: “R10m”, “R20m” ,“R60m”.
How can I open an RGB in SNAP of this product and how can I export a solely band to GeoTIFF file to be open in QGIS?
Is any correction factor needed to be applied to the exported GeoTIFF file for this case?
Thanks a lot.