Fig. 1: Area of study and section of potential temperature anomaly in 2018 relative to 1850.
From: The redistribution of anthropogenic excess heat is a key driver of warming in the North Atlantic
a Location of the A05 basin-wide hydrographic section along 25°N (black line) superimposed on the spatial map of annual mean 0–2000 m ΔOHC (109 Joules m−2) in 2019 relative to a 1981–2010 baseline (IAP data7, 87). The schematic of the meridional overturning circulation (MOC) shows surface currents carrying heat towards the poles (red line) and the North Atlantic Deep Water and Antarctic Bottom Water formation sites (yellow dots) where surface waters lose buoyancy, downwell, and subsequently feed the deep (blue) and bottom (purple) return flows of the MOC, adapted from ref. 88. b–d Vertical distribution of reconstructed potential temperature anomalies (°C) in 2018 relative to 1850 along A05 for (b) the Florida Strait, (c) the top 1100 m and (d) below 1000 m of the transatlantic section. The colour scale in (d) applies also to (b) and (c). The dashed lines delimit the depth layers used for the section averages.
