Fig. 7: Observed and projected trends in sea surface temperatures. | Communications Earth & Environment

Fig. 7: Observed and projected trends in sea surface temperatures.

From: Exceptional atmospheric conditions in June 2023 generated a northwest European marine heatwave which contributed to breaking land temperature records

Fig. 7

a 1903–Aug 2023 2 m depth temperature anomaly timeseries at E1, b 1988–Aug 2023 2 m depth temperature anomaly timeseries at L4 (see Fig. 2 for location). Light red circles are positive anomalies, dark red circles represent heatwave conditions (>90th centile); Light blue circles are negative anomalies, dark blue circles represent cold spell conditions (<10th centile). c 1982–2023 OSTIA foundation SST timeseries overaged over the NWS. d Annual cycle of SSTs averaged across the NWS: grey 2000–2019 OCN_amm7_RAN reanalysis, orange future changes from NWS PPE projections (2040–2059). Bold line is the daily average. Left axis actual value, right axis shows SST difference with present-day. Blue line is 2022, red line 2023.

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