File name: ARC2023_summer-heat-extremes_map_graph.png
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(map) Surface temperatures in July-September 2023 compared to the 1991-2020 average. Some areas were 7.2 degrees Fahrenheit or more above average (darkest red). (graph) Summer temperatures (July-September) each year from 1940-2023, showing rapid warming in recent decades. NOAA Climate.gov image, based on ERA5 data from Siiri Bigalke.