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Copernicus ECMWF

The Change Service ( ) & Monitoring Service (CAMS), implemented by ECMWF on behalf of the European Commission.

29/05/2026

Three charts based on data you shouldn’t miss this month:

📈 CAMS forecasts transport over the Green Islands – AtmoHub
1️⃣ https://www.linkedin.com/posts/atmohub_atmohub-airquality-atmosphericscience-activity-7461301092388261889-ugAl?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAWNTgwB_wXipi1e1r_ByuYSWRt2NYxKH2U

📈 Another transport, this time in western Europe – Mark Parrington
2️⃣ https://bsky.app/profile/mparrington.bsky.social/post/3mmc4f2hxgs2z

📈Southeast Asia sees severe haze despite lower than average wildfires – CAMS
3️⃣ https://bsky.app/profile/copernicusecmwf.bsky.social/post/3mlnf5dsa522a

Learn more about our charts page:
https://atmosphere.copernicus.eu/guide-cams-visual-products-our-atmosphere-your-fingertips

Get the data: https://atmosphere.copernicus.eu/data

29/05/2026

Three charts based on data you shouldn’t miss this month:

📉 April was the joint 3rd warmest April on record – Samantha Burgess, C3S
1️⃣ https://bsky.app/profile/oceanterra.org/post/3mld4wzwiic2h

📉 Arctic and Antarctic temperature anomalies in 1940-2026 – Zack Labe
2️⃣ https://bsky.app/profile/zacklabe.com/post/3mmtdwaduqs2l

📉 Global warming beyond natural fluctuations from El Niño cycle – Our World in Data
3️⃣ https://bsky.app/profile/ourworldindata.org/post/3mlnsdgfx772f

Find out more about ERA5 reanalysis and other datasets available in the Climate Data Store CDS .
👉 https://climate.copernicus.eu/what-copernicus-climate-change-services-era5-reanalysis-dataset
👉 https://cds.climate.copernicus.eu/ #!/home

28/05/2026

Why did severe haze affect large parts of Southeast Asia in April, even though wildfire activity was lower than usual across much of the region?

A new article from looks at what happened, how air quality was affected in cities including Bangkok, Hanoi and Phnom Penh, and why Thailand stood out.

Read the article: https://atmosphere.copernicus.eu/severe-haze-affects-southeast-asia-despite-below-average-wildfire-activity-april

27/05/2026

Did you know that the Methane Hotspot Explorer from the Copernicus Atmosphere Monitoring Service (CAMS) lets you see not only where methane is detected, but also the shape and extent of the resulting plumes?
Using observations from the Tropospheric Monitoring Instrument (TROPOMI) aboard the Copernicus Sentinel-5 Precursor, the app helps users explore plume behaviour in more detail, with a wind layer to support interpretation of transport and movement.

Users can also access key event information, including date, time, country, coordinates, emission rate, uncertainty and detection ID, and download the data for further analysis.

Explore the app: https://atmosphere.copernicus.eu/ghg-services/cams-methane-hotspot-explorer

27/05/2026

Did you know the Greenland Ice Sheet covers roughly 80% of the island and is one of only two ice sheets on Earth?

The European State of the Climate 2025 confirms the 29th consecutive year of net mass loss for the Greenland Ice Sheet:

🧊 In 2025, the Greenland Ice Sheet lost around 139 billion tonnes of ice. This is equivalent to about 1.5 times the ice stored in all glaciers in the European Alps and raised global mean sea level by 0.4 mm.

🧊The 2025 mass loss was 9% lower than the average of around 152 Gt per year, mainly because of higher‑than‑average spring and summer precipitation, which partly offset summer melt.

🧊 Since the 1970s, the Greenland and Antarctic Ice Sheets have together lost over 10,000 Gt of ice, contributing about 3 cm to global sea-level rise.

Dive into the findings in , published jointly by ECMWF and the World Meteorological Organization (WMO).

https://climate.copernicus.eu/esotc/2025/greenland-ice-sheet?utm_source=socialmedia&utm_medium=FB&utm_campaign=european-state-of-the-climate-2025&utm_id=ESOTC-2025

25/05/2026

In 2025, the European Arctic saw strong regional contrasts and continued warmth, with notable differences between the Greenland and Barents seas.

Key insight from the European State of Climate 2025:

🧊 Sea ice conditions contrasted across the region, with average or above‑average ice cover in the Greenland Sea and much below‑average ice cover in the Barents Sea, particularly at the beginning and end of the year.

🧊 From January to April, sea ice extent in the Barents Sea and Svalbard region showed large variability, linked to the passage of storms and associated ice drift.

🧊 Sea ice volume in the European Arctic was above average at the end of the growth season in April, but much below average by the end of the year.

🧊 The annual average sea surface and sea ice temperature for the European Arctic was the second highest on record, behind 2016.

Discover more findings in , published jointly by ECMWF and the World Meteorological Organization (WMO).

🔗 https://climate.copernicus.eu/esotc/2025/sea-ice?utm_source=socialmedia&utm_medium=FB&utm_campaign=european-state-of-the-climate-2025&utm_id=ESOTC-2025

21/05/2026

In 2025, annual river flow was below average in 70% of European rivers.
According to the European State of the Climate 2025 report, for the European river network as a whole:

💧 River flow was below average for 11 months of the year, with only January showing slightly above‑average conditions. In May and June, river flow reached its lowest levels since records began in 1992.

💧 Particularly pronounced deficits were observed in several central, southern and eastern regions.

💧 In contrast, near‑average or above‑average annual flows were seen in western regions, especially the Iberian Peninsula, western France, Ireland, Italy, and parts of Norway and Sweden.

💧 The flooded extent of Europe’s rivers was the second lowest on record since 1992, and much smaller than the widespread flooding in 2023 and 2024.

💧 Around 12% of rivers exceeded the ‘high’ flood threshold at some point during the year and about 5% reached the ‘severe’ threshold.

Despite the reduced flood extent, several significant flood events occurred in 2025, including in Ireland, the United Kingdom, Spain, Portugal, Italy and Albania.
Explore the full analysis in , published jointly by ECMWF and the World Meteorological Organization (WMO).

🔗 https://climate.copernicus.eu/esotc/2025/river-flow-flooding?utm_source=socialmedia&utm_medium=FB&utm_campaign=european-state-of-the-climate-2025&utm_id=ESOTC-2025

See major flooding and other key events in 2025: https://climate.copernicus.eu/esotc/2025/key-events-overview?utm_source=socialmedia&utm_medium=FB&utm_campaign=european-state-of-the-climate-2025&utm_id=ESOTC-2025

20/05/2026

🐝 Today is , a timely reminder that these amazing insects are key to biodiversity. Climate change and air pollution affect habitats, influence ecosystem resilience and add stress to already vulnerable natural systems.

The Copernicus Climate Change Service (C3S) and the Copernicus Atmosphere Monitoring Service (CAMS), both implemented by the European Centre for Medium-Range Weather Forecasts (ECMWF), provide open climate and atmospheric data that help monitor these pressures across Europe and beyond.

From tracking climatic conditions such as temperature and precipitation to assessing ozone, particulate matter, and wildfire emissions, C3S and CAMS strengthen the evidence base for biodiversity assessment, conservation planning and ecosystem restoration.

As the European Union works towards its biodiversity goals, access to reliable data remains essential for informed action.

Read the article to learn more:
https://climate.copernicus.eu/how-copernicus-supports-biodiversity-role-c3s-and-cams

20/05/2026

In this edition of Ask a Scientist, Anna Lombardi, Climate Data Visualiser for the Copernicus Climate Change Service (C3S) at ECMWF, takes us behind the visuals of the European State of the Climate 2025 report (ESOTC 2025).

She explains how the cover art was created, shares her favourite chart, and reveals which one was the most challenging to produce. Through her perspective, we see how a single chart can tell a much bigger story: climate change does not stop at borders, but affects us all.

Discover all the charts in the graphics gallery 👉 https://climate.copernicus.eu/esotc/2025/graphics-gallery/clouds-and-sunshine?utm_source=socialmedia&utm_medium=FB&utm_campaign=european-state-of-the-climate-2025&utm_id=ESOTC-2025

Would you like to learn how to make climate data clear and engaging, and connect with an international community of creators and experts? Register now for Visualising Climate 2026, 4-6 Nov, in Bologna, Italy.

🔗 More information: https://climate.copernicus.eu/visualising-climate-2026

15/05/2026

How much sunshine and cloud cover did Europe see in 2025?

For Europe as a whole, sunshine duration was around 5% higher than average in 2025, while cloud cover was below average over much of the continent.

Key findings in the European State of the Climate 2025:
☀️ Sunshine duration and surface solar radiation were much above average in northwestern, central and eastern Europe, and parts of the Mediterranean, and below average across the Iberian Peninsula and northeastern Europe.

☀️ Parts of northern France, Germany, Denmark, Ireland, the United Kingdom and Türkiye saw much above‑average to record‑high sunshine duration. In some parts of the United Kingdom, annual sunshine was up to 300 hours above average (around +30%).

☁️ Cloud cover was below average over much of Europe, with a negative anomaly of about 3% for land areas as a whole and −6 to −8% in parts of northwestern, central and eastern Europe and over the central and eastern Mediterranean.

☁️ In contrast, the Iberian Peninsula, Baltic states and the Aegean Sea saw large scale positive cloud cover anomalies of around 5–8%.

Explore the full analysis in , published jointly by ECMWF and the World Meteorological Organization (WMO).

🔗 https://climate.copernicus.eu/esotc/2025/clouds-and-sunshine?utm_source=socialmedia&utm_medium=FB&utm_campaign=european-state-of-the-climate-2025&utm_id=ESOTC-2025

14/05/2026

For Europe as a whole, 2025 was one of the three driest years since 1992, continuing a trend towards drier conditions over the past two decades.

Key findings in the European State of the Climate 2025 show that drier‑than‑average soil moisture conditions persisted for much of the year, affecting a large area from western to eastern Europe, including the United Kingdom, the Netherlands, Ukraine and Türkiye. In May, 35% of Europe saw 'extreme' agricultural drought.

In contrast, central Scandinavia, western Russia and the Baltics saw periods of record‑wet soil moisture. In the Iberian Peninsula soils were 31% wetter than average in March, with Spain and Portugal seeing 251% and 229% of their average rainfall for the month before conditions turned drier, helping fuel large wildfires in August.

The European State of the Climate 2025 report is published jointly by ECMWF and the World Meteorological Organization (WMO).

👉 Explore the full analysis: https://climate.copernicus.eu/esotc/2025/soil-moisture?utm_source=socialmedia&utm_medium=FB&utm_campaign=european-state-of-the-climate-2025&utm_id=ESOTC-2025

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