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. 2021 Oct 11;8:264. doi: 10.1038/s41597-021-01050-2

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© The Author(s) 2021

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Fig. 4 — Spatial cluster-based Bayesian merging scheme. According to Eq. 1, this scheme merges the 30-m HydroBlocks-RTM brightness temperature estimates ( $T_{H B}^{-}$ , in the cluster-space) with the 9-km SMAP L3E observed brightness temperature (T_SMAP, in the grid space) to obtain a fused 30-m brightness temperature estimate ( $T_{H B}^{+}$ , in the cluster space). Figure adapted from Vergopolan et al.³⁷.