The Cryosphere Research Group at DTU Space 🌍❄️ | Geodesy & Earth Observation Department |https://bsky.app/profile/dtucryo.bsky.socialhttps://bsky.app/profile/dtucryo.bsky.social/post/3mmgnkka5lc2rExcited to share 📄✨ our new paper on #Sentinel-3 radar over the #GreenlandIceSheet - accepted in #IEEEJSTARS & out as a preprint: https://ieeexplore.ieee.org/document/11513904 🔍 It started with an unusual signal: very low radar backscatter in N Greenland (summer 2023)…22 May 2026 09:44 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mmgnkka5lc2rhttps://bsky.app/profile/dtucryo.bsky.social/post/3mm7lmisb6k2cGreetings from Karthaus. It is always a pleasure to be back in the beautiful setting of the Karthaus summer school. This year, Rasmus is attending the course, and Nanna and Louise are teaching.19 May 2026 14:21 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mm7lmisb6k2chttps://bsky.app/profile/dtucryo.bsky.social/post/3mm6yzegvb22dKicked off May at #EGU26 in Vienna - a week packed with talks, posters & inspiring discussions. Back in the office full of fresh ideas 💡 - and thanks to sunny weather + rental bikes, the #BikeToWork #VCTA streak rolled on even from Vienna 🚴‍♀️ #PolarPedalers [contains quote post or other embedded content]19 May 2026 08:48 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mm6yzegvb22dhttps://bsky.app/profile/dtucryo.bsky.social/post/3ml6dlmp2j22e☀️ Spring has finally arrived in Copenhagen ☀️ The team celebrated the good weather by painting flower pots and planting some (small-ish) sunflowers to brighten up our offices during our social event🌻06 May 2026 08:59 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3ml6dlmp2j22ehttps://bsky.app/profile/dtucryo.bsky.social/post/3ml2idby5o22vOver the past few weeks, @reneefredensborg.bsky.social and @spacehsk.bsky.social have been hands‑on in the #CEMSIE field campaign — coordinating and contributing to ground-based snow ❄️ and sea ice 🧊 observations, as well as helicopter and airborne operations with #CRISTALair 🛩️❄️🧊 [contains quote post or other embedded content]04 May 2026 20:14 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3ml2idby5o22vhttps://bsky.app/profile/dtucryo.bsky.social/post/3mkrpxs67p22j📢 Want to hear more about the EO-based activities of our group? Meet us at #EGU26 @egu.eu next week, we'll be around with the following presentations and sessions:01 May 2026 08:36 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mkrpxs67p22jhttps://bsky.app/profile/dtucryo.bsky.social/post/3mkp5mfihn22rIntroducing #PRODEM‑Xtract: An open‑source tool providing 32 m‑resolution annual ice thickness along Greenland Ice Sheet flux gates ❄️ Applied to major Greenland glaciers, it reveals previously unresolved dynamics, thereby improving estimates of solid ice discharge 🧊 Link: tinyurl.com/PRODEM-Xtract30 Apr 2026 08:03 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mkp5mfihn22rhttps://bsky.app/profile/dtucryo.bsky.social/post/3mkmp3x3ks22pThe 2025 European State of the Climate is out now! Europe is the fastest-warming continent, warming more than 2x the global average. Read more and explore climate insights for Europe: climate.copernicus.eu/esotc/2025 Illustrations by: @copernicusecmwf.bsky.social #ESOTC2025 #CopernicusClimate29 Apr 2026 08:37 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mkmp3x3ks22phttps://bsky.app/profile/dtucryo.bsky.social/post/3mkhzaoihj22v🧊 New paper out from the ESA CCI Sea Ice project led by DTU cryo. Advancing the use of independent, non‑satellite observations to validate satellite‑derived sea‑ice thickness - while tackling representativeness and uncertainty head‑on. 👏 @spacehsk.bsky.social, @reneefredensborg.bsky.social [contains quote post or other embedded content]27 Apr 2026 11:56 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mkhzaoihj22vhttps://bsky.app/profile/dtucryo.bsky.social/post/3mk3ha2smi22pWe are a scientific partner of the SILA Greenland Mission 2026 with IMAQA ❄️ Using ski kites, the expedition will traverse the Greenland Ice Sheet from South to North and collect GNSS elevation data on behalf of DTU Space 🔗 www.imaqa.be/sila Sila means both weather and state-of-mind in Kalaallisut 🇬🇱22 Apr 2026 12:01 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mk3ha2smi22phttps://bsky.app/profile/dtucryo.bsky.social/post/3mjeea7k33s23Just before Easter, Stine and Mary attended the 9th Sentinel Validation Team meeting, hosted by @esaearth.esa.int and @eumetsat.int in Frascati, Rome Great discussions on ice sheet products and multi-sensor synergy. We can't wait for the upcoming #Sentinel‑3C launch and tandem phases 🚀🧊 #Sentinel313 Apr 2026 07:37 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mjeea7k33s23https://bsky.app/profile/dtucryo.bsky.social/post/3mibwizkifc2c@louisesandbergs.bsky.social and @nataliahavelund.bsky.social attended the CCI colocation meeting last week. There were many important discussions on the future of the programme. Thanks for having us! [contains quote post or other embedded content]30 Mar 2026 15:00 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mibwizkifc2chttps://bsky.app/profile/dtucryo.bsky.social/post/3mhzu62uao22jExcited to kick off ESA’s HARMONY Validation Concept Consolidation & Verification Methodology project, managed by CLS. Proud to lead land ice calibration & validation planning. DTU team: Kristina, Sebastian & Stine. Harmony (launch in 2029) will advance insights into land deformation & glaciers27 Mar 2026 09:57 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mhzu62uao22jhttps://bsky.app/profile/dtucryo.bsky.social/post/3mhx72bpqu22f🚨 Applications open! Join us for The Polar Climate Space: a week‑long #hackathon (24–30 Aug) bringing together #ECRs to tackle #Arctic & #Antarctic challenges using #EO, #climate models, in‑situ data & #ML. More info below! 👉 ECR form: tinyurl.com/ycy57mvj 👉 Senior scientists: tinyurl.com/2p9tv99226 Mar 2026 08:34 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mhx72bpqu22fhttps://bsky.app/profile/dtucryo.bsky.social/post/3mhprouqzfs22Big congrats to Anna for defending her PhD on surface mass balance using EO data 👏🎓✨ And of course, the celebration included a proper cake with P H D spelled out on top 🎂 #PhD #PhDDefense #SurfaceMassBalance #EarthObservation #Cryosphere23 Mar 2026 09:46 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mhprouqzfs22https://bsky.app/profile/dtucryo.bsky.social/post/3mhdh5cstf22rLast week, researchers came together for the Danish Antarctic Science Seminar at @ucph.bsky.social to discuss the most recent studies of Antarctic science! @tabea-rettelbach.bsky.social showed how the @esa.int Digital Twin can be used to explore "what-if" scenarios for the Antarctic Ice Sheet ❄️18 Mar 2026 12:06 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mhdh5cstf22rhttps://bsky.app/profile/dtucryo.bsky.social/post/3mgtr7k45xs2x❄️Theory and practice❄️ (Part 2) This week in Sisimiut we continue our Extreme Climate and Physical Nature course on the Arctic Semester by diving into snow physics. After covering the theory, students headed into the field to explore the snowpack firsthand. #CryoTeaching #ArcticDTU #SnowScien12 Mar 2026 06:23 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mgtr7k45xs2xhttps://bsky.app/profile/dtucryo.bsky.social/post/3mgowurcjp224New paper alert! 📄 How do Arctic tundra landscapes develop after a wildfire? 🔥 Using high-resolution lidar DEMs and a space-for-time approach, @tabea-rettelbach.bsky.social examined how ice-wedge polygon terrain in Alaskan permafrost landscapes changes following a fire. https://doi.org/10.1088/1748-9326/ae491a10 Mar 2026 08:21 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mgowurcjp224https://bsky.app/profile/dtucryo.bsky.social/post/3mga4azmzas2x❄️Theory and practice❄️ In Sisimiut, Greenland, we teach a DTU course called Extreme Climate and Physical Nature on the Arctic Semester. Earlier this week 30+ students practiced drilling in the ice on the lake in the center of town after learning the theory last week. #CryoTeaching #ArcticDTU04 Mar 2026 10:48 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mga4azmzas2xhttps://bsky.app/profile/dtucryo.bsky.social/post/3mfj7sbdcqk2vOur PhD Student @mikkelaabykruse.bsky.social is currently getting a taste of what it is like to do fieldwork in the Arctic at The University Centre in Svalbard (UNIS)❄️🥽 🧤 Working on a glacier is no safe or easy task, and UNIS is a great place to learn the ropes of what it means to be a glaciologist!23 Feb 2026 08:20 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mfj7sbdcqk2vhttps://bsky.app/profile/dtucryo.bsky.social/post/3mf4rffzqrk2g🚀 Excited for Copernicus @esa.int #CRISTAL! This mission’s dual‑freq Ka/Ku #altimeter aims to measure snow depth on sea ice. A new UiT‑led study (feat. @reneefredensborg.bsky.social) explores current laser/radar data + simulates CRISTAL waveforms. Check it out ➡️ https://tc.copernicus.org/articles/20/183/2026/ ❄️🧊18 Feb 2026 09:30 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mf4rffzqrk2ghttps://bsky.app/profile/dtucryo.bsky.social/post/3mdzpd7pji22aOne year into the ESA Digital Twin (DT) Earth Ice Sheets project ❄️@eo4cryo.bsky.social and @tabea-rettelbach.bsky.social with other @esa.int DTs at the science meeting in Frascati to present the pre-operational dtc-ice-sheets.org & new ideas for holistic data cubes 🛰️🌐 #DigitalTwinEarth #IceSheets04 Feb 2026 10:50 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mdzpd7pji22ahttps://bsky.app/profile/dtucryo.bsky.social/post/3mdih7kx7sk23🍾🥂One of our most exciting pieces of news this month must be the hand-in of Anna Puggaard's PhD thesis on "Earth observation for surface mass balance" on January 15, celebrated with cake and bubbles! We look forward to seeing her in the office as a postdoc in February, after a well-deserved break! 🏝️28 Jan 2026 14:09 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mdih7kx7sk23https://bsky.app/profile/dtucryo.bsky.social/post/3md3un6thms2gNew paper hot off the press in #IEEE JSTARS from our very own @kirkscanlan.bsky.social rkscanlan.bsky.social and @eo4cryo.bsky.social along with @anja-ruti.bsky.social l from #GEUS 🔥🔥 Find it here https://ieeexplore.ieee.org/document/1133988823 Jan 2026 14:05 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3md3un6thms2ghttps://bsky.app/profile/dtucryo.bsky.social/post/3mcct3fobf22a📢 Going to #EGU26? Do you work with #radars on icy and rocky surfaces? ➡️Look no further! Submit an abstract to this session, convened by our @kirkscanlan.bsky.social and @reneefredensborg.bsky.social with Hameed Moqadam! The deadline is fast approaching ⌛ - submit by 15 January 2026 at 13:00 CET! [contains quote post or other embedded content]13 Jan 2026 15:01 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mcct3fobf22ahttps://bsky.app/profile/dtucryo.bsky.social/post/3mbzajj5lsk22Great to be at the 2026 Greenland Ice Sheet Seminar at the Niels Bohr Institute with cryosphere colleagues. Photo: @kirkscanlan.bsky.social presenting for DTU Space. #GreenlandIceSheet #Cryosphere #DTUSpace09 Jan 2026 19:34 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mbzajj5lsk22https://bsky.app/profile/dtucryo.bsky.social/post/3mbysru5goc2k🌟Meet our Group🌟 @mikkelaabykruse.bsky.social is a PhD student in the Cryo Group. He uses satellite remote sensing to study lakes hidden beneath the Greenland Ice Sheet 🛰️🧊🌊 Some of these lakes can contain and later release enormous amounts of meltwater. #Cryosphere #RemoteSensing #Greenland09 Jan 2026 15:29 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3mbysru5goc2khttps://bsky.app/profile/dtucryo.bsky.social/post/3m7zto5uulc2h🌟Meet our Group🌟 Sebastian B. Simonsen (@eo4cryo.bsky.social) is a senior researcher using satellite altimetry to study ice sheets, sea-level change, snow, and ice dynamics. Lately focused on data-driven models and digital twins. PI for Digital Twin Ice Sheets.‬‬‬‬‬‬ Also involved in C3S and CCI.15 Dec 2025 14:27 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3m7zto5uulc2hhttps://bsky.app/profile/dtucryo.bsky.social/post/3m7l2d2ikbk2vOur colleague @tabea-rettelbach.bsky.social is developing dynamic data cubes for #EO data over ice sheets (literally 🧊). The goal is to make complex geospatial datasets easier to find, access, and use for e.g. modelers. #datacubes @icelink-project.bsky.social #PISCO #DTC_icesheets09 Dec 2025 17:16 +0000at://did:plc:kfyyse5ekmtc7typ47dyood4/app.bsky.feed.post/3m7l2d2ikbk2v