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1100. Summer 2024 Was the Hottest Ever

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1100. Summer 2024 Was the Hottest Ever

 

On September 11, NASA announced that summer 2024 was the hottest summer on record, with the average temperatures in June, July, and August exceeding last year's record by 0.1°C.

In the Northern Hemisphere, June, July, and August correspond to summer. The summer of 2024 was 1.25°C above the average temperature of 1951-1980, and August alone was 1.3°C above the average. In light of NASA records and models, and taking into account the uncertainty of previous data, it is estimated that the summer of 2024 was 1.51°C higher than at the end of the 19th century.

NASA scientists have also been releasing records for the average annual global temperature, and so far 2023 has been the hottest year. The National Oceanic and Atmospheric Administration (NOAA) and the European Union's Copernicus Climate Change Service have also acknowledged this. Each of these agencies uses different and independent methods to estimate the average global temperature.

As a result, in rare cases, estimates may differ. For example, Copernicus estimates that July 2023 was the hottest month on record, while NASA estimates that July 2024 was slightly higher. The new analysis found that the difference between July 2023 and July 2024 was smaller than the uncertainty in the data, suggesting that both were effectively at their highest peaks.
Based on a new analysis and a longer-term historical record, it is estimated that the summer of 2023 was 1.30-1.49°C hotter and the summer of 2024 was 1.40-1.59°C hotter than at the end of the 19th century.

Contributor: IIYAMA Miyuki, Information Program
 

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