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Calibrated albedo (current cohort)vs peer medianPeer percentile5 of 100 · among the darkest peers
Persistent spectral anomaly
75 of 135 clean acquisitions ≥0.03 below the completed-membrane peer median (mean -0.0468), Nov 22, 2024 → Jun 7, 2026. Persistence is a diagnostic target, not a cause.
Landsat thermal, with limitations
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