"Relentless Human-Caused Heat" Continued In 2025 At Or Above 1.5C "Limit"; ESA Projects 1.7C Increase In 2027

[hatrack]

Several annual international climate reports released Tuesday indicate that relentless human-caused warming continued in 2025, especially in the oceans and at the poles. For the third year in a row, Earth’s average temperature ran close to 1.5 degrees Celsius hotter than the climate that sustained human civilizations as the 20th century began, before fossil-fuel pollution started damaging the atmosphere.

Avoiding more than that level of warming is also the key long-term temperature goal of the 2015 Paris Agreement. Research shows that warming by more than 1.5 degrees Celsius above the baseline will spell the end of nearly all global glaciers and coral reefs and mark a dangerous red zone for damage and destruction of ecosystems, food supplies, human health and infrastructure.

The European Union’s Copernicus Climate Change Service report released Tuesday ranked 2025 as the third-warmest year on record, just a hair cooler than 2023 and within striking distance of 2024, the hottest year on record. Together, the past three years averaged more than 1.5 degrees Celsius above pre-industrial temperatures, the first time any three-year stretch has crossed that threshold.

EDIT

The Copernicus report was foreshadowed by a Dec. 18 analysis of recent temperature trends by noted climate scientist James Hansen and colleagues. They found that 2025 stayed near or above the 1.5-degree Celsius threshold even after the strong planet-warming El Niño weather pattern of 2023–2024 eased. And they projected that a new El Niño could push global warming to about 1.7 degrees Celsius in 2027. El Niño is a Pacific Ocean temperature cycle that alternately warms or cools the entire planet by 0.1 to 0.2 degrees.

EDIT

https://insideclimatenews.org/news/13012026/multiple-reports-show-2025-extreme-global-heat/

[mountain grammy]

1. winter has had a very mild winter

Only a hand of nights below freezing and a couple of inches of snow total. Dry as a bone. Its an El Niño winter which accounts for the lack of snow but not the heat. That’s on us.