To tackle climate change effectively, we need solid science, reliable data, and a deep understanding of the forces behind climate change. ICOS delivers standardised, high-quality, long-term greenhouse gas measurements to explore the complexities of the carbon cycle. Learn more⬇️

⏰ Just a few days left until FLUXES goes live! Discover how cities turn data and innovation into real climate impact in the next issue of FLUXES on #UrbanEmissions. 👉 Request your copy here: https://t.co/Bc3INxpGhi #ClimateAction #Decarbonisation #GreenhouseGases

Travelling to Helsinki for the ICOS 10-year anniversary week? Join us after the Anniversary Seminar for an excursion to ICOS stations Tvärminne or Hyytiälä 🌲🌕 ➡️ Read more & register by 9th Nov: https://t.co/aQNl9s8ug8 Photos courtesy of @helsinkiuni & Alf Norkko.

ICOS celebrates its 10-year anniversary this year, but some of our stations have around for decades before this. Long-term #greenhousegas measurements are needed to analyse both long-term #climate trends and extreme events. 🌎🌪️ 👉 Read more: https://t.co/49sp8GFIQV

We warmly congratulate Nina Buchmann, a central figure in the #ICOSSwitzerland network, on receiving Honorary Membership of the British Ecological Society (BES)! 🎉 Congratulations from all of us at ICOS! 👏 @NinaBuchmann1 @ETH_en Read more: https://t.co/oZkAQBL19G

Final reminder - call for session proposals for ICOS Science Conference 2026 closes this Friday 24th October 2025 at noon (12:00 CET)! Submit your proposal here: https://t.co/Ee9rDVSHoF #ICOS2026SC

The next FLUXES on #urbanemissions launches 3 Nov! Explore the four key themes: 1️⃣ Cities as climate change innovators 2️⃣ Decarbonising cities 3️⃣ Urban emission monitoring 4️⃣ Tools for climate action assessment 👉 Learn more: https://t.co/aXsXRQDssD #climateaction

A study using 26 years of data from the ICOS Ecosystem station Davos, Switzerland, paints an uncertain future for the carbon sink potential of a Norway spruce forest🌲 The lengthy time series of flux data was critical for enabling this study. Read more: https://t.co/DjSiHjdApn

📢 70% of global GHG #emissions originate in #cities. We need accurate data to act. IG3IS updated Urban GHG Guidelines can help. Join Lead Author Jocelyn Turnbull for the key highlights. 📅 Oct 23, 2025 | ⏰ 21:00 CEST Register now! ➡️ https://t.co/lf9l4Dz51Y

🆘 Global greenhouse gas concentrations reached record levels in 2024! 📈 @WMO #GHG Bulletin, which includes ICOS data, shows that from 2023 to 2024, CO2 increased by 3.5 ppm - the largest one-year increase since measurements began.

🚨Coming soon: FLUXES Volume 4 launches on 3 Nov! This issue explores urban greenhouse gas emissions and how cities can lead the way in mitigating climate change. 👉 Be the first to read it! Subscribe to the ICOS Newsletter: https://t.co/BHVqUvuugF #UrbanEmissions #ClimateAction

Just over a week remaining to submit a session proposal for #ICOS2026SC 📆 The deadline for submissions is noon (12:00 CET) on Friday 24th October 2025 Submit your proposal here: https://t.co/Ee9rDVSHoF

Join us on 22 October 2025 9:00-11:30 CEST for a webinar on innovations in marine and freshwater measurement techniques. The webinar is organised by @ICOS_RI and @EMSOeu, in framework of #ENVRINNOV and @GeorgeEUproject. Registration and more: https://t.co/lHZIdYV84s

Bert Gielen (ICOS Ecosystem Thematic Centre) at @esa Tth Sentinel-2 Validation Team Meeting 🛰️ Bert presented improved measurements of Leaf Area Index (LAI) and Fraction of absorbed photosynthetically active radiation (fAPAR) at ICOS sites within the @HorizonEU project #NUBICOS

That’s a wrap on GEORGE Technical Forum II! 💥A week of learning, collaboration & exploring new sensors with 32 participants + 11 experts from 11 countries. Big thanks to @VLIZnews for hosting & to all training partners for the sessions. See you in 2026 for Technical Forum III!

The GEORGE Technical Forum is wrapping up today with conversations around data. The participants were introduced to QuinCe, a quality control software by @ICOS_RI 💻 Any institution can access QuinCe for quality control of pCO2 data. 👉 Read more: https://t.co/GCdNidfyfp

“This well-designed engine of the ICOS research infrastructure is now operational, and we can optimise its usage. Co-designing observation-based services with users is a key activity in the future." ICOS Director General Werner Kutsch in @IRISCC_eu panel on the future of services

New essential guidance for #cities! 🏙️ The new Urban Emission Observation & Monitoring Guidelines are here. With 70% of global #GHGs from urban areas, cities need robust tools to measure emissions & track reduction progress. Q&A and guidelines: https://t.co/53s2mOGgty #ICOSCities

The IRISCC Second Open Call for Access is now open! Researchers across Europe and beyond can apply for sponsored access to Europe’s top research infrastructures tackling climate-related risks. 🗓️ Deadline to apply: 28 November 2025 🔗 Open Access Call: https://t.co/lRP8jVNYxG

The ICOS newsletter for September is out! This month, registration opened for the ICOS 10-year anniversary seminar, ICOS ocean instruments were compared in a major study, and the #ICOS2026SC call for session proposals opened. Read more: https://t.co/D4jlUe2VcY

The ICOS Ocean Thematic Centre has published the results of the largest intercomparison study of its kind, comparing 27 instruments for surface ocean pCO₂ measurements. One method proved the most reliable. ➡️ Read more: https://t.co/Gb3tN905tG