frequency in intensity of extreme temperature event that occurred once in 10 years on average in a climate without human influence.
Supplementary notes
Projected changes are shown at global warming levels of 1°°ä, 1.5°°ä, 2°°ä, and 4°°ä and are relative to 1850-1900 representing a climate without human influence. The frequencies in intensity of 10-year extreme events from the base period
Citation formats
Future changes in frequency of decadal temperature extremes 2021
Extreme weather events, such as heat waves, are likely to become more frequent and more intense within the next few years. The risk of extreme temperature events, currently expected to occur once every 10 years, will be nearly 9.4 times more likely to occur under a global warming level of 4.0°C.
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UNEP, & World Meteorological Organization, & IPCC. (August 9, 2021). Projected frequency of decadal extreme temperature events worldwide due to global warming as of 2021 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 16, 2026, from /statistics/1257474/projected-extreme-temperature-global/
UNEP, und World Meteorological Organization, und IPCC. "Projected frequency of decadal extreme temperature events worldwide due to global warming as of 2021." Chart. August 9, 2021. ÌÇÐÄÆƽâ°æ. Accessed July 16, 2026. /statistics/1257474/projected-extreme-temperature-global/
UNEP, World Meteorological Organization, IPCC. (2021). Projected frequency of decadal extreme temperature events worldwide due to global warming as of 2021. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 16, 2026. /statistics/1257474/projected-extreme-temperature-global/
UNEP, and World Meteorological Organization, and IPCC. "Projected Frequency of Decadal Extreme Temperature Events Worldwide Due to Global Warming as of 2021." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 9 Aug 2021, /statistics/1257474/projected-extreme-temperature-global/
UNEP & World Meteorological Organization & IPCC, Projected frequency of decadal extreme temperature events worldwide due to global warming as of 2021 ÌÇÐÄÆƽâ°æ, /statistics/1257474/projected-extreme-temperature-global/ (last visited July 16, 2026)
Projected frequency of decadal extreme temperature events worldwide due to global warming as of 2021 [Graph], UNEP, & World Meteorological Organization, & IPCC, August 9, 2021. [Online]. Available: /statistics/1257474/projected-extreme-temperature-global/
