The implemented EnKF framework generates an optimal albedo estimate
(\(\hat{\alpha}\)) between the CRHM modelled (\(\alpha_{m}\)) and
Sentinel-2 observed (\(\alpha_{o}\)) albedo by weighing the modelling
(\(\sigma_{m}^{2}\)) and measurement error variance (\(\sigma_{o}^{2}\))
using the Kalman gain (\(K\)),