Press Release: 2021 was Warmest Year on Record for 1.8 Billion People

BERKELEY, CA — Berkeley Earth today released its annual report on global mean temperature, concluding that while 2021 was significantly colder than 2020, it was nominally the sixth warmest year on Earth since 1850, 1.2 degrees Celsius (2.2F) above the 1850 to 1900 average. Given the uncertainties associated with temperature measurements, the years 2015, 2018, […]

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Global Temperature Report for 2020

Berkeley Earth, a California-based non-profit research organization, has been preparing independent analyses of global mean temperature changes since 2013. The following is our report on global mean temperature during 2020. We conclude that 2020 was nominally the second warmest year on Earth since 1850. Our estimate of the global mean temperature in 2020 was slightly […]

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Colder weather and increasing coronavirus (COVID-19) spread

Cooling weather may have caused increased COVID-19 spread. Considered across many regions, the average reproduction number (R) gradually increased from ~1.0 to ~1.2 as daily high temperatures fell from >27 °C to ~10-15 °C (>80 °F to 50-60 °F). Other factors, including decreases in sunlight and/or UV exposure, may have slightly increased this further.

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July 2022 Temperature Update

Globally, July 2022 was the 4th warmest July since record-keeping began in 1850. Due to ongoing La Niña conditions, 2022 is projected to be around the 4th or 5th warmest year overall.

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June 2022 Temperature Update

Globally, June 2022 was the 2nd warmest June since record-keeping began in 1850, and the warmest on land. Due to La Niña conditions, 2022 is projected to be around the 4th or 5th warmest year overall.

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March 2022 Temperature Update

Globally, March 2022 was the 5th warmest March since record-keeping began in 1850. Due to ongoing La Niña conditions, 2022 is projected to be around the 4th or 5th warmest year overall, with only a small chance of a new record.

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February 2022 Temperature Update

Globally, February 2022 was the 8th warmest February since record-keeping began in 1850. Due to ongoing La Niña conditions, 2022 is projected to be around the 4th or 5th warmest year overall, with only a small chance of a new record.

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January 2022 Temperature Update

Globally, January 2022 was the 6th warmest January since record-keeping began in 1850. Due to ongoing La Niña conditions, 2022 is projected to be around the 4th or 5th warmest year overall, with only a small chance of a new record.

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June 2021 Temperature Update

Globally, June 2021 was the fourth warmest June since record-keeping began in 1850. La Niña has ended, but its lasting impact has contributed to relative coolness in 2021.

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March 2021 Temperature Update

Globally, March 2021 was the ninth warmest March since record-keeping began in 1850. Diminishing La Niña conditions have been present in the Pacific and contribute to the relative coolness this year.

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January 2021 Temperature Update

Globally, January 2021 was the sixth warmest January since record-keeping began in 1850. Moderate La Niña conditions continue in the Pacific, making it unlikely that 2021 will set a new record for warmest year.

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October 2020 Temperature Update

Globally, October 2020 was the fifth warmest October since record-keeping began in 1850. La Niña conditions strengthened in October, significantly reducing the likelihood that 2020 sets a new record for warmest year.

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