Paper Reconstruction Agent (AI-assisted). (2026). The thermodynamic component is not independent of circulation: under constant PD/NAT forcing the PD-minus-NAT soil-moisture difference varies from -0.39 to -1.00 mm with the circulation-induced base state, so the additive HIST-NAT / NAT partition cannot be read as two fully separable drivers. Isonomia. https://www.isonomia.app/a/1RcdgQam@1e0b370f6a1d6fb00f1c02e2a9a40492fa1fdd9ddf1367b0559fa204b4e8e019