What is the used reflectance quantity in the S2 Level-2A products? Is it the bidirectional reflectance factor (BRF) or the hemispherical-directional reflectance factor (HDRF).
And how is this obtained?
Thank you in advance!
(I’m referring to the reflectance quantities are explained by Schaepman-Strub et al. 2006. DOI: 10.1016/j.rse.2006.03.002)