Fig. 1: Heat wave event of 2023. | Nature Communications

Fig. 1: Heat wave event of 2023.

From: The longest-lasting 2023 western North American heat wave was fueled by the record-warm Atlantic Ocean

Fig. 1

a Seasonal evolution of maximum (red) and minimum (blue) temperature for Phoenix Arizona for the year 2023 from 1 June to 20 September. The long-term daily mean is shown by the dashed line, whereas the 5th and 95th percentiles are shown by the shading region. Excess above the 95th percentile is shown by red shading and stipples for both maximum and minimum temperatures. b Observed histogram of maximum (red) and minimum (blue) temperature for Phoenix, Arizona for the period 1 June to 31 August from 1955 to 2023. The extremely warm temperatures of 19 July 2023, during the peak amplitude of the heat wave, are shown for reference. c Five-day averaged surface temperature anomaly centered on 19 July 2023. Source data are provided as a Source Data file.

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