Mastodawn

Martin Stendel Jun 19, 2025

🌐❄️ 𝗧𝗵𝗲 𝗻𝗲𝘄 𝗣𝗼𝗹𝗮𝗿 𝗣𝗼𝗿𝘁𝗮𝗹 𝘄𝗲𝗯𝘀𝗶𝘁𝗲 𝗶𝘀 𝗹𝗶𝘃𝗲!

We’re excited to launch the updated version of 𝗣𝗼𝗹𝗮𝗿𝗽𝗼𝗿𝘁𝗮𝗹.𝗱𝗸 – your gateway to 𝗿𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝗱𝗮𝘁𝗮 𝗼𝗻 𝗔𝗿𝗰𝘁𝗶𝗰 𝘀𝗲𝗮 𝗶𝗰𝗲 𝗮𝗻𝗱 𝘁𝗵𝗲 𝗚𝗿𝗲𝗲𝗻𝗹𝗮𝗻𝗱 𝗜𝗰𝗲 𝗦𝗵𝗲𝗲𝘁.

📊 On 𝗣𝗼𝗹𝗮𝗿𝗽𝗼𝗿𝘁𝗮𝗹.𝗱𝗸, Danish research institutions share up-to-date monitoring and expert knowledge on the state of the Arctic cryosphere.

𝗛𝗲𝗿𝗲 𝘆𝗼𝘂 𝗰𝗮𝗻 𝗳𝗶𝗻𝗱 𝗱𝗮𝘁𝗮, 𝗮𝗻𝗶𝗺𝗮𝘁𝗶𝗼𝗻𝘀 𝗮𝗻𝗱 𝘂𝗽𝗱𝗮𝘁𝗲𝘀 𝗼𝗻:
• Surface conditions on the Greenland Ice Sheet and its major outlet glaciers
• Total mass balance of the Greenland Ice Sheet and its contribution to global sea-level
• Sea ice extent, thickness and volume in the Arctic
• Temperature anomalies of sea ice and the open sea in the Arctic
• Icebergs around Greenland

The portal is powered by the Danish research institutions #DMI, #GEUS, #DTUSpace and #DTUByg and supported by data from #Asiaq - Misissueqqarnerit - Grønlands Forundersøgelser and #PROMICE (https://promice.org/).

🔗 Visit the new site: https://polarportal.dk/en/

#PolarPortal #Greenland #Arctic #ClimateMonitoring #Cryosphere #IceSheet #Seaice #ClimateData #NCKF #climatechange

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Ruth Mottram Sep 6, 2024

Next Kirk Scanlan of #DTUspace showed some exciting @H2020protect.bsky.social results from satellite data, where decomposing the signal in a different way allows us to probe the surface density of the #Greenland #iceSheet -> some great potential to use these results in SMB models.
3/9

Martin Stendel Sep 29, 2023

GRACE mass/height change data now updated up to March 2023. Since the twin satellites were launched in April 2002, the Greenland Ice Sheet has lost a total of 4745 Gt (=4745 km³), which corresponds to 13.3 mm global sea level rise. Note, this is just from Greenland.
Data on @polarportal from #DTUSpace.

Ruth Mottram Apr 30, 2023

Shout out for @Hansen_Nicolaj who just joined #MastodonDK - he of the awesome work @roelof shared last week. Nicolaj world on #Antarctica #Gravity #Geodesy #Satellites + #IceSheet #SurfaceMassBudget with #ClimateModel

#DKMastodon #DTUSpace

https://fediscience.org/@roelof/110275077903207736

Roelof Rietbroek (@[email protected])

Attached: 2 images With Icesat-2, you can measure the height of the Icesheets, but to convert to mass change there are several corrections which need to be applied, a critical one is the conversion of volume to mass which requires the uncertain ice density. Nicolaj Hansen shows results over the Ice2-sat period. #EGU23

FediScience.org

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Ruth Mottram Jan 5, 2023

PIs are Anders Svensso. And Dorthe Dahl Jensen in Denmark but #Green2Ice also includes #DTUSpace and #GEUS partners @greenlandicesheet

Ruth Mottram Nov 10, 2022

Just been interviewed about this new paper Khan et al from our colleagues at #DTUSpace - it's about the NE #Greenland #IceStream #NEGIS that drains a large areas of the #IceSheet + that has accelerated and thinned since at least the early 2000s

https://www.nature.com/articles/s41586-022-05301-z

Extensive inland thinning and speed-up of Northeast Greenland Ice Stream - Nature

Analysis of global navigation satellite system observations and satellite data shows that frontal changes in 2012 of the North-East Greenland Ice Stream led to speed-up and thinning at least 200 km inland.

Nature