Great news for the EUMETSAT SAF Network: CDOP-5 has been approved by the EUMETSAT Council and the contracts have been signed today. We look forward to continuing the next phase of CM SAF with our European consortium partners.

New CM SAF data release: GIRAFE v1 ICDR extends the global precipitation Climate Data Record beyond 2002-2022.

Show your stripes, but from space. 🛰️ For #ShowYourStripes Day, we created stripe plots for three CM SAF satellite climate variables: solar radiation, sunshine duration and cloud cover. Not temperature stripes, but climate stripes.

New on the CM SAF website: a short highlight article on our contribution to the European State of the Climate Report 2025. Clouds, sunshine duration, satellite-based climate data records, and a look behind the scenes of the report process. 🔗 www.cmsaf.eu/EN/Highlight...

Greetings from Norrköping, Sweden, where the CM SAF Steering Group met at SMHI this week. The meeting included productive discussions and key decisions on the GIRAFE ICDR and on climate anomalies & normals to support climate services in @eumetsat.int member states. Thanks to SMHI for hosting us!

Greetings from Utrecht, where the CM SAF consortium is meeting for this year’s in-person International Board Meeting. A valuable opportunity to discuss current activities, future plans and collaboration across our European partner network. Many thanks to @knmi.nl for hosting us!

Nice to see SARAH-3 sunshine duration data from CM SAF featured in #ESOTC2025. Long-term satellite-based climate data records help to put recent sunshine and cloudiness patterns into climate context.

From satellite data to running shoes: DWD/KU43 was on the move. Colleagues from DWD/KU43 joined the 13th Merck Firmenlauf in Darmstadt, representing CM SAF, ESA Knowledge Exchange and ENWIKOR. A nice evening of running, team spirit and friendly competition with our ESA and EUMETSAT colleagues. 🏃‍♀️🏃‍♂️

How are surface and top-of-the-atmosphere radiation changing over time? Today at #EGU26, Jörg Trentmann presents CM SAF work on shortwave and longwave radiation variability using satellite data records such as SARAH-3, CLARA-A3 and HANNA. 📍 08 May | 16:15–18:00 CEST | Hall X5 | X5.146

Satellite data can also help checking station data. At #EGU26, a GEBA poster shows how SARAH-3 and CLARA-A3 support quality control of long-term surface energy flux observations, helping to identify suspicious values and possible inhomogeneities. 📍 08 May | 16:15–18:00 CEST | Hall X5 | X5.147

Great to present the upcoming new version of the CM SAF HOAPS dataset, HOAPS 5.0, at #EGU26. The poster session has wrapped up. Thanks to everyone for the engaging discussions and interest. Looking forward to what comes next!

CM SAF at #EGU26 in Vienna Several CM SAF colleagues and partners will present posters on satellite-based climate data records, covering radiation, water vapour, ocean-atmosphere interaction, evapotranspiration and surface fluxes. A short thread 👇

The European State of the Climate 2025 report is now out. CM SAF contributed again this year, including input on clouds, sunshine duration and solar radiation. Read the report here: climate.copernicus.eu/esotc/2025 #ESOTC

On Wednesday, 29 April, ECMWF/C3S and WMO will launch the European State of the Climate 2025 report. CM SAF contributed again this year, including input on clouds, sunshine duration and solar radiation. There is still time to register for the launch event: t.co/VoVITRDkE0 #ESOTC

CM SAF is at the MicroRad2026 in L’Aquila 🇮🇹 Karsten Fennig presents CM SAF work on microwave radiances for climate data records, from precipitation and water vapour to liquid water path and evaporation-related quantities. More info 👉 www.microrad2026.it A small thread 👇

Nice to see CM SAF’s SARAH-3 sunshine duration dataset featured by EUMETSAT. A good example of how satellite climate data records help to put recent conditions into perspective. ☀️

Today is #WorldMeteorologicalDay. This year’s theme is “Observing Today, Protecting Tomorrow”. From surface stations to satellites, observations are the backbone of weather, climate monitoring and early warnings. #Meteorology #Climate

External webinar tip: ESA CCI's monthly series on monitoring climate change from space (methods + ECV science). Useful context for satellite CDR users incl. CM SAF. Next: sea level altimetry 18 Mar 2026; permafrost temps 22 Apr 2026. climate.esa.int/en/climate-change-initiative-training/webinars/

CM SAF visiting scientist Dr. Chris Kidd (University of Birmingham) joined us to refine passive-microwave precipitation retrievals for SSM/I (1987-2008). This feeds into upcoming GIRAFE updates and extends global precipitation time series. DOI:10.5676/EUM_SAF_CM/GIRAFE/V001

☀️ Sunshine duration anomalies in 2025 from CM SAF SARAH-3 satellite data. While much of Central and Northern Europe saw above-average sunshine, Spain and Eastern Europe were below average. In the UK, 2025 was reported as the sunniest year on record.

🇨🇭 The Swiss Drought Platform has won the German Award for Good Administration! It combines Sentinel data with CM SAF climate records to produce the Vegetation Health Index (VHI), supporting national drought monitoring efforts. 🔗 trockenheit.admin.ch

🌲 Satellites can reveal subtle signals of forest growth, as shown in a new EUMETSAT use case. Studies like this rely on long-term, stable climate observations, including the global climate data records provided by CM SAF. 🔗 vuser.eumetsat.int/resources/ca...

The CM SAF R Toolbox has just been updated on CRAN! 🎉 Easily access, analyse, and visualise satellite-based Climate Data Records - no R coding needed! The new cmsaf, cmsafvis, and cmsafops versions are now available: 👉 www.cmsaf.eu/R_toolbox

☀️ At the EUMETSAT Climate Symposium, @meteofrance.com showed how CM SAF SARAH sunshine duration data provide far more detailed national maps than ground-based networks alone. A great example of the added value of satellite-based climate data!

🌍 The EUMETSAT Climate Symposium 2025 starts today in Darmstadt! Meet CM SAF experts at the Fair of Opportunities and explore how satellite-based climate data support energy, water, and climate services.

DYK the clouds above our oceans play a role in understanding climate? ☁️ Marine stratocumulus clouds, which reflect sunlight & help cool the oceans, are shrinking as sea temperatures rise. Fewer clouds mean warmer oceans - learn how satellites can help track this critical change: bit.ly/497OPPZ

🌍 Do low clouds accelerate global warming? New research using CM SAF satellite data shows: ocean warming reduces stratocumulus cloud cover − less reflection, more heat. A feedback loop that could intensify climate change. 🔗 [http://bit.ly/4oe0LEf](bit.ly/4oe0LEf)

As you know, next year's Meteorological Satellite Conference will be held in Darmstadt, Germany. 🛰️ Help us celebrate 40 years of EUMETSAT by submitting your proposals for panels, side events, and keynote talks. 🥳 Share your ideas by 10 October 2025 and be part of this milestone event! bit.ly/4mMOXrt

🌍 From solar energy to drought, from heat to global climate monitoring – CM SAF will be there! Join us at the EUMETSAT Climate Symposium (28-30 Oct, Darmstadt). ❗Registration closes tomorrow – don’t miss it!

📣Calling policy & decision makers, & climate service providers! Join the EUMETSAT Climate Symposium: 28–30 Oct, Darmstadt, Germany Hear from: 🔹UNFCCC - advancing the Paris Agreement 🔹IPCC - satellite data 🔹DG CLIMA - supporting climate policy objectives Register 👉 www.eventsforce.net/eumetsat/fro...

Last day of the EUMETSAT Conference in Lyon! Thanks to everyone who joined the discussions and visited CM SAF contributions. One final talk today: looking at long-term climate data to support the energy transition in Germany. #EMSC2025

📍 This week we’re at the #EMSC2025 in Lyon! CM SAF contributes to several posters and talks on: ☁️ cloud detection 🌞 solar radiation 🌍 albedo 🌀 3D cloud effects ⚡ energy trends Looking forward to a week full of exchange and ideas!

🆕 More CM SAF climate data now available via the EUMETSAT Data Store! You’ll find: ☁️ CLARA-A3 (subset) 🌧️ GIRAFE v1 💧 UTH v2 Explore and download directly - no registration needed. 🔗 www.cmsaf.eu/SharedDocs/K...

👋 Wrapping up #EMS25 in Ljubljana! CM SAF satellite data featured in inspiring talks & posters - from solar radiation to energy analysis. And we're not done yet: three more CM SAF-related talks still to come today! Thanks to all who joined. Safe travels! 🌍

📍 This week at #EMS25 in Ljubljana: CM SAF satellite data are featured in several talks and a poster - from solar radiation and reanalysis for energy to “Dunkelflauten” and new high-res data records. Great to see our climate data supporting Europe’s energy future! www.ems2025.eu

📢 Big news from Offenbach! Since 4 July 2025, the DWD CM SAF team works from the new DWD-Campus. The modern, CO₂-neutral building offers us a new base to continue generating high-quality satellite-based climate data for users worldwide.

🚀 Our new paper is published in Earth System Science Data. Introducing GIRAFE v1 – a global satellite-based climate data record for precipitation (2002–2022) with daily sampling uncertainty. Find the full paper at: 🔗 doi.org/10.5194/essd...

The EUMETSAT Climate Symposium is from 28–30 October 2025. The event will take place at darmstadtium Science and Congress Center in the heart of Darmstadt, Germany, 30km south of Frankfurt. Register now to join us & celebrate 25 years of Climate@EUMETSAT: www.eventsforce.net/eumetsat/fro...

🎉 Celebrating 10 years of the CM SAF R Toolbox! Launched in summer 2015, it has been downloaded over 80,700 times. A big thank you to all users for your continued support and feedback! Here's to more years of data analysis and climate insights. 👉 www.cmsaf.eu/R_toolbox

Today at #LPS25: CM SAF presents 25 years of sustained satellite Climate Data Records - from clouds to radiation, precipitation, humidity & more. Supporting climate services with high-quality ECVs and near-real-time updates. 🕦 11:30 | Session A.05.02 📍 Room 1.31/1.32

🌧️ Today at #LPS25: We present GIRAFE v1 – a new global satellite-based precipitation climate data record with daily uncertainty estimates. 🕓 16:15 | Session A.07.08 📍 Room 1.15/1.16 Join us to learn more about the GIRAFE algorithm & validation!

Today marks the start of the ESA Living Planet Symposium 2025 in Vienna - the world’s largest Earth observation conference! 🌍 CM SAF experts and users are here to present satellite-based climate data and applications. 📍Find us in Vienna! #LPS25

Today is #ShowYourStripes day! We’re joining in with two examples from CM SAF satellite data: ☁️ Cloud fraction over Spain ☀️ Sunshine duration over South Africa Each stripe shows the anomaly of a year since 1983 – a visual reminder of our changing climate. 👉 www.cmsaf.eu

Next week: the D·A·CH Meteorology Conference 2025 in Bern 🇨🇭 Experts from weather & climate meet to exchange ideas – incl. CM SAF users sharing how satellite-based climate data support their work. Looking forward to inspiring talks! 👉 dach2025.oeschger.unibe.ch

Wherever you live in the world, your climate is getting warmer. 21st June is #ShowYourStripes day when we encourage everyone to use the warming stripes graphics to talk about climate change and how we are all already experiencing the consequences. Download your stripes: www.ShowYourStripes.info

The agenda is now online for Climate@EUMETSAT! 28–30 October 2025 Darmstadtium in Darmstadt, Germany. Sessions will cover topics including climate policy, the future design of satellite climate products, & data access & utilisation. Details & registration at: www.eventsforce.net/eumetsat/fro...

This week we are joining the workshop on “global precipitation monitoring in a joint European effort” hosted by Institut Pierre Simon Laplace @ipsl.bsky.social in Paris and look forward to discussing requirements, production and use cases of precipitation datasets for climate analysis and services.

🇨🇭 Switzerland has launched a new national drought early warning system! It combines satellite and model data − including surface temperature data from EUMETSAT’s CM SAF − to assess vegetation stress. A great example of climate data in action: www.trockenheit.admin.ch/de/regionen/...

🌞 Just released: HANNA – high-res solar radiation data for Europe! 15-min resolution, \~1 km grid, derived from Meteosat rapid scans with terrain-aware processing. Perfect for PV modeling, now available for 2019–2020 via CM SAF. More: [email protected]

🌤️ A new study uses CM SAF SARAH-3 & CLARA-A3 to analyse 1983–2020 trends in solar radiation & cloud cover over Europe and North Atlantic. The findings show rising solar radiation in the north & complex links to NAO. 📖 Read more: doi.org/10.1127/metz...