hi, I’m trying to convert Sentinel-3 OLCI Level1 TOA radiance bands (S3A_OL_1_EFR) to TOA reflectance and export it as GeoTiff (using python and by using SNAP 5.0 GUI) and I have a couple of questions.
As I understood from Sentinel-3 user guide, the data per pixel in the spectral bands (of S3A_OL_1_EFR) is TOA radiance. What is the scaling factor used for? because it seems that the data is originally in floating point.
I was able to convert the data to TOA reflectance using: optical–>preprocessing–>Radiance to reflectance Processor. Does SNAP uses the formula found here to convert to TOA reflectance?
I projected the data using Raster–> Geometric operation–>reprojection. Is there a way to do it using python script? I need to process many Sentinel-3 images and doing it using the GUI is not feasible.