Fig. 2: Soil moisture–temperature coupling during the three identified phases of the April 2023 heatwave.
From: Record-shattering 2023 Spring heatwave in western Mediterranean amplified by long-term drought
a Soil moisture–temperature coupling metric (π) during the three HW phases: build-up (a), peak (b), and demise (c). d–f Idem as a–c but for the spatial mean values of the temperature (T’) and energy (H’–Hp’) coupling terms. g Time series of both coupling terms from 1 April 2023 to 3 May 2023. The red box in a–c and d–f, respectively, was used to compute the regional coupling T’ and H’–Hp’ in southern Iberia, showed in g. Black vertical boxes in g separate the three HW phases.
