While line graph time series of global mean surface temperature anomalies for each Northern Hemisphere July from 1880 through 2023. There is a long-term increasing trend and large year-to-year variability. A 30-year lowess smoothing line is also shown with a red line. The global mean surface temperature anomaly in July 2023 was 1.43°C for the Northern Hemisphere. Anomalies are computed relative to a 1951-1980 climate baseline.
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