Extended Data Fig. 1: Monthly average sea-level pressure climatology and anomalies during May, June, July and August 2023.
From: Drivers of the extreme North Atlantic marine heatwave during 2023

a–d, The mean sea-level pressure (hPa) is shown as contours and anomalies are shaded and calculated relative to the 1981–2010 mean. Mean and anomalous sea-level pressure fields are calculated from hourly ERA5 data.