Revisit the weather forecast that changed history. Read how stormy conditions changed the date of the D-Day, 6 June 1944 Normandy landings & explore the new Weather Replay app letting users revisit weather hour by hour from Jan 1940 to near present day. Read more ⬇️

Wildfire smoke has reversed US progress toward ozone air quality, study finds

Tomorrow: Science on the 7th returns live! Join us for a conversation on air quality in Latin America and Mexico with guest Beatriz Cardenas. 📅 June 5 ⏰ 9:00 AM EDT | 2:00 PM GMT 🔗Tune in live: www.youtube.com/live/N6M1aKu...

Active fire in NE Ontario this evening. GOES-East geocolor shows a large plume from Timmins Fire -009. The mid-ir shows a very active fire (red and white areas)

The Canadian weekly fire weather outlook is now outfor June 6-11. The action may be shifting further east - take a look. Lots of active fires today in Manitoba and NW Ontario (GOES - East Geocolor showing the ON fires) www.tru.ca/wildfire/res...

Sea ice recedes from the northwestern Alaska coastline in this month-long timelapse from the JPSS satellites. The dwindling ice coverage reveals more of the surface of the Chukchi Sea as meteorological summer has arrived in the northern hemisphere.

Air pollution remains a major killer in Europe. In 2023, fine particulate matter (PM2.5) caused around 182,000 premature deaths in the EU, with Eastern and Southeastern Europe hit hardest. North Macedonia’s Skopski region recorded the highest rate: 301 deaths per 100,000 people.

The plume is contributing to declining visibility and air quality with increased ground-level concentrations of PM10 across a large part of the region.

A large Saharan dust plume has stretched across the Atlantic from the west coast of Africa towards the Americas. CAMS data shows that large parts of the Caribbean are most impacted.

Flattered to have the Editor's highlight featuring my recent spotting paper: Weather Radar Data Reveal the Dynamics of Rapidly Spreading Wildfires eos.org/editor-highl...

New analysis of air quality data from the past 70 years by Robert Field, Olivia Clifton, Konstantinos Tsigaridis of NASA GISS and co-authors shows that Canada's record wildfire smoke in 2023 is part of a broader, continent-wide trend toward smokier skies: https://bit.ly/3NSuXro

A year of dust in motion 💨 Our new video combines CAMS dust forecasts and Meteosat-12 imagery to follow desert dust plumes from north Africa as they travelled across the Atlantic and Mediterranean in 2025, affecting air quality, transport & ecosystems far from their source. Watch ▶️ bit.ly/3Qkidvk

The hotspot from the 48th episode of Kīlauea's ongoing eruption was periodically visible through cloudy skies over Hawai'i yesterday. This sets a new record for the most fountaining episodes for an eruption at this volcano.

EU deploys record wildfire response for 2026: 777 firefighters and 27 aircraft across Europe. After 2025 burned over 1 million ha, the largest in EU records, prevention and resilience matter as much as response: ec.europa.eu/commission/p... #Wildfires #ForestFires #ClimateResilience

To celebrate EUMETSAT’s 40th anniversary, we’re inviting you to explore imagery of our Earth from space. 🌍🚀 If you’ve ever been mesmerised by a swirling hurricane, a massive dust storm, or the sheer beauty of Earth from space, this is your chance to share that wonder! [1/7]

Today's Copernicus image of the day, based on our #CopernicusAtmosphere data, shows a Saharan dust plume reaching the Caribbean Sea, impacting air quality in the region. Visit the latest forecast: atmosphere.copernicus.eu/charts/packa...

UEF2026 kicks off in Reading today. This year the focus lies on extreme temperature forecasts, from heatwaves to cold spells, and how advanced forecast products can help improve preparedness and resilience. Watch live from 14:00 BST ➡️https://ecmwfevents.com/i/using-ecmwf-s-forecasts-uef2026

New online! Wildfires in 2025

Wildfires devastating richer areas but fewer hectares burned globally – study

#Saharandust and high ground-level concentrations of PM10 reaching the Caribbean in recent days expected to continue for the first few days of June in #CopernicusAtmosphere 5-day forecasts from 31 May 00 UTC atmosphere.copernicus.eu/charts/packa... @copernicusecmwf.bsky.social @ecmwf.int

A megaslump! This is Batagaika Crater, the biggest permafrost crater in the world, caused by melting permafrost. The crater is growing at a rate of around 30 m a year: this rapid expansion began a few decades ago and is the result of deforestation/warmer temperatures. 📸 www.esa.int/ESA_Multimed...

Global atmospheric concentrations of greenhouse gases carbon dioxide (CO₂) and methane (CH₄) continued to increase in 2025, reaching their highest annual values in the satellite record. Since 2020, CO₂ concentration has risen by ~2.6 ppm/yr & CH₄ by ~11.6 ppb/yr. @wmo-global.bsky.social @ecmwf.int ⬇️

Three charts based on #CopernicusAtmosphere data you shouldn’t miss this month:  📈 CAMS forecasts #SaharanDust transport over the Green Islands – AtmoHub 1️⃣ www.linkedin.com/posts/atmohu...   ⬇️

🌐Out now: Version 3 of the improved global land surface atmospheric observations dataset. New release includes 3 billion additional observations, coverage back to 1718 & data through Feb.2026. Supports reanalysis products, gridded products & data services. ⬇️ #CopernicusClimate

#ClimateArena #Dataharvest26

Find out how severe haze affected parts of Southeast Asia in April, despite below-average wildfire activity across much of the region. #CopernicusAtmosphere looks at the data, and why Thailand stood out, in our latest article: atmosphere.copernicus.eu/severe-haze-...

I'm looking forward to attending #Dataharvest26 in Mechelen for the next couple of days where I'll be giving an overview of #CopernicusAtmosphere products and applications for tracking global #airquality #GHG & #wildfires @copernicusecmwf.bsky.social @ecmwf.int atmosphere.copernicus.eu

Are we modelling fires properly?🔥 A new study improves how a global climate model sizes wildfire smoke emissions to differentiate between normal fires and extreme fires. To make sure the comparison focuses on real wildfire plumes, the team used data from Copernicus Sentinel-5P: t1p.de/uarz1

Did you know the Methane Hotspot Explorer from #CopernicusAtmosphere shows not only methane hotspots, but the shape and extent of methane plumes too? You can also access key event info, including date, time, coordinates, & more, and download the data for analysis. Explore ⬇️

A large plume of #SaharanDust crossing the North Atlantic towards the Caribbean in the last few days of May in the #CopernicusAtmosphere aerosol optical depth forecast initialized 27 May, 00 UTC. Latest charts atmosphere.copernicus.eu/charts/packa... @copernicusecmwf.bsky.social @ecmwf.int

Read our latest article about the extended release of the Copernicus pan-Arctic Regional Reanalysis (CARRA2) from #CopernicusClimate, now providing a continuous 1986–2025 pan-Arctic (full Arctic north of 65°N) regional reanalysis. ⬇️

Just posted the fire weather outlook - May 30 - June 4 for Canada. Expect fire activity to pick up with the persistent upper atmospheric ridge over central Canada bringing hot and mostly dry conditions. www.tru.ca/wildfire/res...

The 2026 fire season has started in the Northwest Territories. GOES-West mid-ir loop below. White areas are an active fire and red areas are very active fire( fire above the gold line). The black ares are clouds that are partially obscuring the fire.

Near real-time imagery from the Meteosat-12 satellite available via two new YouTube streams. 🌍🛰️ See close-up views over Europe and Africa from geostationary orbit, updated every 10 minutes. 🔵 Europe: www.youtube.com/live/nigtvuO... 🟢 Africa: www.youtube.com/live/U3jRSL3...

Striking image of #SantaRosa island ravaged by a massive #wildfire, captured by #Copernicus #Sentinel2 on May 20. The blaze has burned 30% of the island in #California (more than 17.500 acres), home to dozens of rare plant and animal species. #climateemergency

Our “Air Pollution and Your Health” factsheet is now available in 10 languages: English, French, Spanish, Hindi, Kiswahili, Arabic, Russian, Tamil, Luganda, & Bengali. We’re committed to breaking down barriers to vital health information. Access the factsheet ➡️ https://tinyurl.com/4t5fpe2k

A study of soils around the Arctic and boreal forests has found that some wildfires are releasing carbon stored over millennia, meaning higher CO2 emissions than assumed

#CopernicusAtmosphere dust aerosol optical depth forecast from 19 May shows #SaharanDust transport across Canary Is, Iberian Peninsula, W France & UK, with potentially hazy sunsets in the coming days. Latest charts atmosphere.copernicus.eu/charts/packa... @copernicusecmwf.bsky.social @ecmwf.int

2025 marked a record year for wildfires in Europe 🔥 More than 1m hectares burned across the continent, surpassing the previous 2017 record. According to @copernicusecmwf.bsky.social, wildfire emissions also reached record highs. 🔗 Read more: climate.copernicus.eu/esotc/2025/w...

#CopernicusAtmosphere dust aerosol optical depth forecast from 19 May shows #SaharanDust transport across Canary Is, Iberian Peninsula, W France & UK, with potentially hazy sunsets in the coming days. Latest charts atmosphere.copernicus.eu/charts/packa... @copernicusecmwf.bsky.social @ecmwf.int

A dangerous wildfire has been burning on Santa Rosa island over the last few days, having engulfing a large section of the island in flames. The wildfire is currently around 17,000 acres in size and is the largest California wildfire so far in 2026.

During NASA’s #Artemis II mission around the Moon in April 2026, the astronauts photographed Earth from space with handheld cameras. Philippe Lopez, who recently retired from ECMWF, simulated three of the most striking Artemis images from IFS weather forecasts. ➡️ www.ecmwf.int/en/about/med...

@annalombardi.bsky.social from #CopernicusClimate, takes us inside the charts behind the #ESOTC2025. She shares how the report’s cover art was created, her favourite & the most challenging chart, & how data shows that climate change does not stop at borders. 🔗 climate.copernicus.eu/esotc/2025/g...

Great new article led by one of my colleagues which shows that housing density was more impactful in terms of fire destruction than urban vegetation during the January 2025 LA Wildfires. www.nature.com/articles/s41...

Our image of the week shows Saharan dust moving east from Libya across the Mediterranean Sea, as seen from geostationary orbit, 36,000 km above Earth. This image was captured by the FCI instrument onboard Meteosat-12 on 14 May 2026. Read more: bit.ly/4dzdBJo

New research shows just 60 minutes of exposure to woodsmoke, cleaning‑product aerosols and diesel exhaust trigger different lung and cognitive responses. ncas.ac.uk/just-one-hou...

The #CopernicusAtmosphere global system has been upgraded with the latest cycle of the @ecmwf.int Integrated Forecast System, enhancing atmospheric composition and greenhouse gas forecasts with improvements to observations, ozone, aerosols & emissions. 🔗 atmosphere.copernicus.eu/cams-global-...

📣 𝗪𝗲’𝗿𝗲 𝗵𝗮𝗽𝗽𝘆 𝘁𝗼 𝗮𝗻𝗻𝗼𝘂𝗻𝗰𝗲 𝗮 𝘀𝗶𝗴𝗻𝗶𝗳𝗶𝗰𝗮𝗻𝘁 𝘂𝗽𝗱𝗮𝘁𝗲 𝘁𝗼 𝗘𝗖𝗠𝗪𝗙’𝘀 𝗸𝗲𝘆 𝗳𝗼𝗿𝗲𝗰𝗮𝘀𝘁𝗶𝗻𝗴 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 𝗜𝗙𝗦 𝗮𝗻𝗱 𝗔𝗜𝗙𝗦. All updates are live low. Read more and discover the key improvements ➡️ www.ecmwf.int/en/about/med...

🔥In 2025, Europe recorded its highest wildfire emissions since 2003 and largest burnt area on record (about 1.03 million hectares). Spain alone produced around half of all emissions, and with Portugal, accounted for around 65% of total burnt area. @wmo-global.bsky.social & @ecmwf.int More info ⬇️

Testing underway for Copernicus CO2M🛰️ The Proto-Flight Model spectrometer has passed a key vacuum test, while work on Flight Model 2 is progressing, with its optical elements now protected in an ultra-stable thermal environment. The mission will measure CO₂ and methane in unprecedented detail.