Copernicus ECMWF

📊 🌡️ The October 2025 edition of the #CopernicusClimate seasonal forecast is now available; the multi-system now includes an update to the CMCC forecast system.
You can find data and plots from: climate.copernicus.eu/seasonal-for...

⏰ Deadline extended! Tenders will be accepted until 28 October to develop an advanced LLM-based search and discovery service for the Copernicus Climate Data Store (CDS). Help enhance climate data access - apply today! 🔗 climate.copernicus.eu/c3s2523-llm-...

What do you want to know about climate change in the Arctic and Antarctic?
Submit your questions here!
Our C3S senior scientist and climate change expert Julien Nicolas will answer in an upcoming video.

Stay tuned!

Full insight in the #C3S Climate Bulletin 👉 climate.copernicus.eu/precipitatio...

💧September 2025: Wetter-than-average in northwestern & central Europe, Fennoscandia, parts of Italy, Croatia & eastern Spain, causing flooding in some areas. Drier than average across most of Iberia, the Norwegian coast, much of Italy, the Balkans, parts of Ukraine & western Russia.

Details in the #C3S Climate Bulletin 👉https://climate.copernicus.eu/sea-ice-cover-september-2025?utm_source=socialmedia&utm_medium=bs&utm_campaign=sea-ice-cover-september-2025&utm_id=CB-09-2025

❄ September 2025: daily Arctic sea ice extent reached its 14th-lowest annual minimum on record; monthly Arctic extent was 12% below average. Antarctic daily sea ice extent reached its 3rd-lowest annual maximum on record; 4th-lowest monthly extent.

Get more insights 👉 climate.copernicus.eu/surface-air-...

🌡️ The September 2025 #C3S Climate Bulletin reports the third-warmest September globally, with an average surface air temperature of 16.11°C — 1.47°C above estimated pre-industrial levels. Global average sea surface temperature reached 20.72°C, the 3rd-highest on record for September.

🌍 New app features! The #C3S Climate Pulse app just got even better, with smoother navigation, fullscreen views, advanced chart editing, customisable downloads and new map projections. Watch our How To video and explore the app 👉 pulse.climate.copernicus.eu

#CopernicusClimate

Out now! Version 2.0.0 of the Global land surface meteorological observations dataset (1755–present) is available in the #C3S Climate Data Store (CDS). Updated in situ coverage thru 2024 plus enhanced and consolidated data from worldwide sources. 🔗 cds.climate.copernicus.eu/datasets/ins...

Register ➡️ eumetsat.zoom.us/meeting/regi...

Don’t miss this week’s online lectures at the 7th Joint Training Course on Atmospheric Composition hosted by @ecmwf.int, CAMS, @eumetsat.int and @esa.int (9–10 Oct 2025). Lectures are open to all and cover instruments & data, aerosol modelling & monitoring, ML applications and more.

Read the Use Case 🔗 climate.copernicus.eu/powering-eur...

Discover how the European Network of Transmission System Operators for Electricity (ENTSO-E) is partnering with #C3S to address climate uncertainty in European energy systems. By integrating #C3S data into its grid planning, ENTSO-E is helping ensure a secure, resilient energy future for Europe.

👀 Coming soon: CARRA2 with full Arctic coverage with new features!

🔔 Dataset update: Daily & monthly CARRA Arctic regional reanalysis data (1991–present, 2.5km resolution) now live in the #C3S Climate Data Store (CDS) in addition to the CARRA datasets on different levels!🔗 cds.climate.copernicus.eu/datasets/rea...
#CopernicusClimate

Follow us on BlueSky and Instagram to send in your questions for future episodes.
🦋 bsky.app/profile/cope...
📷 www.instagram.com/copernicusec...

▶️ Watch the second episode now: climate.copernicus.eu/new-video-se...
Every Ask a Scientist episode tackles a different topic, such as climate change, air quality or the ozone hole.

🎥 Check out our new video series!

'Ask a Scientist' features our #C3S and CAMS experts answering questions from our community.
In our second episode, Francesca Guglielmo covers topics from the origins of climate change science to the role of oceans in global warming, and more!

A new app from #C3S supports the EU’s National Emission reduction Commitments Directive. NECD Explorer helps assess when flexibility can be applied using trusted ERA5 data. Users can assess country-aggregated extreme weather seasons with ease.
🔗 climate.copernicus.eu/c3s-app-info...

Drive uptake of CAMS data, build capacity and foster cross-country collaboration. Learn more & apply: atmosphere.copernicus.eu/grants

@ecmwf.int invites proposals to boost collaboration in addressing country-specific, transboundary or transnational atmospheric challenges and associated impacts, via the CAMS National Collaboration Programme (NCP).

Learn more about our charts page:
atmosphere.copernicus.eu/guide-cams-v...

Get the data:
atmosphere.copernicus.eu/data

Visit the new aerosol alerts portal for Europe
aerosol-alerts.atmosphere.copernicus.eu

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📉 CAMS data revealed repeated episodes of transatlantic #smoke, #Saharan dust - CAMS
📉 Record carbon emissions from #wildfires in the EU and UK – CAMS via @adamvaughan.bsky.social
📉 #ozone hole reaching a larger-than-average area mid-September – CAMS

What is the Copernicus Climate Change Service’s ERA5 reanalysis dataset and what can it do for you? How do last month's climate conditions compare to the same month over the last three decades? This is a typical example of the sort of question the ERA5 family of datasets can help address, but the po...

Find out more about ERA5 reanalysis and other datasets available in the #C3S Climate Data Store CDS #ClimateChange.

👉 climate.copernicus.eu/what-coperni...

👉 cds.climate.copernicus.eu#!/home

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Three charts based on #CopernicusClimate data you shouldn’t miss this month:
📈 Western Europe saw third major summer #heatwave - #C3S
📈 Average sea surface temperature anomaly for August 2025 – @financialtimes.com
📈 Record warm in the northern Pacific Ocean - @weatherprof.bsky.social