Two versions of my favourite ship, RV #Polarstern: one that I worked on during an #Arctic expedition in 2022 and one that I have just finished building from bricks. Evidently, I'm not too old for this!

Now available in the CDS: Snow Cover Extent (SCE). This dataset provides daily global estimates of snow-covered areas from multiple optical satellite instruments, offering a consistent, long-term observational record of snow distribution across land surfaces & improved monitoring in forested areas.

This section on the Greenland Ice Sheet is brand new to our ESOTC reporting! ~139 Gt ice lost in 2025. A lot, but still below average (~152 Gt) due to high spring and summer precipitation, which buffered summer melt. Very proud to have served as lead author on this one. Be sure to check it out!

Copernicus ECMWF@copernicusecmwf.bsky.social · 2mo ago

🧊 Did you know the Greenland Ice Sheet covers ~80% of the island and is one of only two ice sheets on Earth? In the 2025 hydrological year, it lost around 139 billion tonnes of ice, making it the 29th consecutive year of net loss & raising the global mean sea level by 0.4 mm. #ESOTC2025 ⬇️

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. ⬇️

In 2025, all European glacier regions saw a net mass loss, with Iceland recording its 2nd‑largest loss since 1976. It was the 4th year in a row that all 19 global glacier regions lost mass. More insight in #ESOTC2025 from #Copernicus Climate @ecmwf.int and @wmo-global.bsky.social ⬇️ #ClimateData

🧊The Greenland Ice Sheet lost 139 billion tonnes of ice in 2025! New @copernicusecmwf.bsky.social #ESOTC report out today. 🔗 climate.copernicus.eu/esotc/2025?u...

#DTUSpace contributes to monitoring ice sheet elevation change of the Greenland Ice Sheet 🧊❄️ Surface lowering means the ice sheet is losing mass through melt and faster glacier flow, contributing to further Arctic warming. Due to its proximity, it affects the climate of the European continent 🔥

📣Out now! We are pleased to release the European State of the Climate 2025 report, published jointly by #CopernicusClimate @ecmwf.int & @wmo-global.bsky.social. Explore climate conditions, key events of 2025 in Europe, long-term climate indicators, climate policy and action for biodiversity, more! ⬇️

I am happy to have contributed to @noragourmelon.bsky.social new paper benchmarking 22 deep learning models for SAR glacier front monitoring. Best AI model averaged 221 m error vs 38 m for humans – careful validation is still essential before replacing manual delineation. doi.org/10.1109/TPAM...

BIG NEWS! 📢 We are planning a new Polar & alpine fieldwork seminar series ❄️🏔️ Our last “Let’s talk fieldwork”-webinar is more than 5 years ago and we think it’s about time to cover this important aspect of polar and alpine science again in one or more online seminars! 1/x

Just wrapped up an exciting trip to the ESA CCI colocation meeting at ECSAT! This was a fantastic occasion to meet the European climate data community, exchange insights across different ECV projects (and programs), and bridge the gap between satellite observations and climate modelling.

📣 Mark the date! On 29 April, @ecmwf.int and @wmo-global.bsky.social will release the European State of the Climate 2025 report, including full coverage of climate conditions, key events, and long-term trends of climate indicators. Stay tuned! #ESOTC2025 @ec.europa.eu ⬇️

Sea ice surface temperature (IST) is vital for tracking energy exchange between polar oceans and the atmosphere. I am happy to share that two IST products are now available via our Climate Data Store: a Level-3 product focusing on the polar regions, and a Level-4 global SST/IST combination product.

Copernicus ECMWF@copernicusecmwf.bsky.social · 5mo ago

🌐 Now in the Climate Data Store: global daily & monthly sea surface temperature (SST) and sea ice surface temperature (IST) from 1982–present. Includes SST-only and combined SST–IST fields with a sea‑ice mask. 🌊 cds.climate.copernicus.eu/datasets/sat... 🧊 cds.climate.copernicus.eu/datasets/sat...

ECMWF invites tenders to build a web app to visualise satellite-derived ECVs from #CopernicusClimate in the Climate Data Store. Designed for users of all data-skill levels, with features like interactive time exploration + point time series. Deadline: 20 Feb. 🔗 climate.copernicus.eu/cjs2231-web-...

In the @copernicusecmwf.bsky.social Global Climate Highlights 2025 report we used #dataviz to present its key messages and bring them to a wider audience. This first example shows daily temperature anomalies from 1940 to 2025 and it was inspired by the work of @erwanrivault.com (BBC)

How does the #cryosphere shape our climate, and how do we track its changes? Dr. Erik Loebel from #C3S shares a first-hand account on monitoring glaciers, ice sheets, sea ice and permafrost, and why it matters.  Read more: climate.copernicus.eu/c3s-behind-s...

🚨New paper 🚨@natgeosci.nature.com Greenlandification of Antarctica - comment by me + colleagues @dmidk.bsky.social @eo4cryo.bsky.social + @universityofleeds.bsky.social showing how Antarctica increasingly resembles Greenland- drawing on a mass of work from @esaclimate.bsky.social rdcu.be/eJiqJ

The Greenlandification of Antarctica

Nature Geoscience - Climate and ice sheet processes in Antarctica increasingly reflect those observed earlier in Greenland. Applying process insights from Greenland can improve projections of...

rdcu.be

🌍🛰️ We are looking for new climate data products! Among these – Permafrost, which will complete our range of cryosphere ECVs monitored within #C3S.

Copernicus ECMWF@copernicusecmwf.bsky.social · last yr.

@ecmwf.int invites tenders to expand #C3S climate data in Land & Ocean domains available in the Climate Data Store (CDS). Five Lots: Sea Surface Salinity, Permafrost, Above-Ground Biomass, Surface Albedo, LAI & fAPAR. Deadline 17/09/25. climate.copernicus.eu/c3s2313g-pro...

Last Friday, my amazing colleagues at @tudresden.bsky.social gave me this very fancy hat! 🎓 #PhDone I’m incredibly grateful to them and to everyone else who has supported me over the past few years. Very excited for the next adventures to come.

What controls seasonal calving in Greenland? New preprint just landed in the EGUsphere - reporting our glacier melange results from fieldwork on the fast ice and (unusually for glaciology) in the melange zone itself in NW #Greenland near Qaanaaq: 🥼❄️🌊⛏️⚒️🧪 egusphere.copernicus.org/preprints/20...

Mélange or landfast ice: What controls seasonal calving at Greenland outlet glaciers?

Abstract. Landfast sea ice and glacier mélange are part of a continuum of ice forms in front of marine-terminating outlet glaciers in Greenland. Mélange (sikussaq) has been posited to offer a buttress...

egusphere.copernicus.org

Just wrapped up an exciting trip to the #CopernicusClimate GA! This was a fantastic occasion to meet the C3S team and connect with the wider climate data community. Additionally, I had the change to present on ice sheet monitoring and how our ECV program is facilitating and advancing these efforts.

The GROCE project accompanied me for many years during my PhD. I am thrilled that our overview paper has finally been published. This paper presents a consistent picture of the atmosphere-ice sheet-ocean system in northeast Greenland as it enters a phase of major change. doi.org/10.5194/tc-1...

The system of atmosphere, land, ice and ocean in the region near the 79N Glacier in northeast Greenland: synthesis and key findings from the Greenland Ice Sheet–Ocean Interaction (GROCE) experiment

Abstract. The Greenland Ice Sheet has steadily lost mass over the past decades, presently representing the second-largest single contributor to global sea-level rise. In line with the rest of the Gree...

doi.org

The #ESOTC2024 report is out! Explore the contrasts across Europe, from the dry and often record-warm conditions in the east to warm but wet conditions in the west. #ESOTC2024 is a joint effort between #CopernicusClimate and @wmo-global.bsky.social, together with over 100 scientists. bit.ly/3G9MdEX

🚀 Code for Earth 2025 is here! Bringing together tech, science & innovation to tackle earth & climate challenges. Ready to code for a better planet? Watch our teaser & join the movement! 🎬👇 youtu.be/XfxareNX-wM

Code for Earth 2025 Teaser

YouTube video by ECMWF Code for Earth

youtu.be

The year 2025 is off to a very exciting start for me. Last week, I finally submitted my PhD thesis. It has been a wonderful 5 years @tudresden.bsky.social and @awi.de and I am very grateful to many colleagues and friends who have supported me along the way.

Our new Antarctic Peninsula glacier calving front data product has finally been published! This dataset will help to better understand outlet glacier dynamics on an intra-annual scale, study ice–ocean interactions in more detail and constrain glacier models. doi.org/10.5194/essd...

Calving front positions for 42 key glaciers of the Antarctic Peninsula Ice Sheet: a sub-seasonal record from 2013 to 2023 based on deep-learning application to Landsat multi-spectral imagery

Abstract. Calving front positions of marine-terminating glaciers are an essential parameter for understanding dynamic glacier changes and constraining ice modelling. In particular, for the Antarctic P...

doi.org

Last week I had the opportunity to present our latest research to the ice altimetry community at the #CRYO2ICE symposium. I talked about AWI-ICENet1, our new AI-based retracking algorithm for ice altimetry (doi.org/10.5194/tc-1...). I took home fantastic feedback and a lot to think about.

This paper has been a long time in the making and I am exited to see it published. It represents an important step towards the development of #AI processing strategies for #glacier monitoring in #Greenland. doi.org/10.5194/tc-1...

Calving front monitoring at a subseasonal resolution: a deep learning application for Greenland glaciers

Abstract. The mass balance of the Greenland Ice Sheet is strongly influenced by the dynamics of its outlet glaciers. Therefore, it is of paramount importance to accurately and continuously monitor the...

doi.org

Home sweet home after our exciting field campaign in East Antarctica carrying out geodetic and geophysical measurements. Our results will contribute to a better understanding of the interactions between solid earth, ice sheet and ocean. See our reports for details: tu-dresden.de/bu/umwelt/ge...

Tomorrow it finally starts! On board RV Polarstern, I'm heading for East Antarctica. This expedition will link ice sheet instabilities, ocean circulation and geoscientific fieldwork. As part of this, our research project is focussing around one site in particular – the extinct volcano Gaussberg. 1/4