The new greenhouse gas emission scenarios are out: they’re used to simulate likely future changes including what future temperatures will be like. Good news: the worst-case scenario - a warming of 4.5 to 5°C [in 2100] - is no longer included. Because we’ve made some (small) efforts after all.

Japanese cherry blossoms are beautiful right now. They also serve as a proxy for global warming. Records kept in Japan since the year 812 show that the flowering dates have shifted (on average) by about ten days.

January 2026: warmer than usual in the west, and very cold in the east as seen by IASI/Metop

In 2025, wind and solar power generated more electricity than fossil fuels in Europe. This was also the case in more than half of European countries Source : ember-energy.org/latest-insig...

Hurricane Melissa passing over the Caribbean, as seen by the IASI satellite, which “observes” cloud temperatures. Winds exceeded 250 mph!

Methane (CH4) is a greenhouse gas. You've all heard that cow farts contribute to global warming, but it's actually cow burps that release CH4...

There you go, the ozone hole that returns every year, but is no longer growing. Proof that international environmental regulations work! On the left are temperatures in the polar vortex, on the right are ozone concentrations for the last 30 days.

IASI-NG - Day 8: Engineers found this image in the launch videos! The raptor survived 😀

Metop-SG was launched last night by Ariane 6, with the IASI-NG infrared remote sensor onboard ! It is the continuation of the IASI program launched 18 years ago. See our best-of here : youtu.be/87LoUXFBjx8 New discoveries to be expected, as the instrument has better instrumental specifications.

Why are Europe and the Arctic warming twice as fast as the global average? Explore the science behind these regional trends in our latest article. climate.copernicus.eu/why-are-euro... #CopernicusClimate

A look back at the exceptional heatwave at the end of June/beginning of July in France and Belgium: > 35°C measured at ground level for a week, that's 6-8°C higher than the average for the previous 15 years on the same dates.

A very sunny June in Europe, as seen from space

Guess how much of the ocean floor humans have visually explored? Less than 0.001%, the size of the blue square shown on the map of Belgium in the image below. More in this paper : www.science.org/doi/10.1126/...

A good summary of the media speculations for the recent electricity black out here : www.carbonbrief.org/qa-what-we-d...

These 2 maps compare mortality in urban areas in Europe, between 2015 and 2099, for an “optimistic” and a “pessimistic” scenario. In green, the lives gained where it will be less cold; in purple, the excess mortality due to heat peaks. It's the Mediterranean region that's taking the biggest hit.

It's not moving fast enough, but it's heading in the right direction...

The 1.6°C temperature increase recorded in 2024 is a bit puzzling... more in this paper (in French): theconversation.com/pourquoi-le-...

There are around 600 active volcanoes, with some 60 eruptions recorded every year. This image shows the sulfur dioxide (SO2) emitted by 4 volcanoes and carried by the winds, as observed by satellite in November.

[RDV 16h !] #Ozone, molécule paradoxale. Stratosphérique, elle protège des rayons UV. Troposphérique, elle nuit à la santé humaine. Comment l’étudie-t-on dans ces différentes couches ? Où en est le fameux "trou" ? tinyurl.com/232uqj5n avec Sophie Godin-Beekmann et @cathyclerbaux.bsky.social

Cold drop in Valencia, as seen by the IASI thermal infrared satellite