Lmst

Incidentally, while this is happening in the US, we have been working quite hard on the @polarportal (well @MartinStendel + out @dmidk colleagues have, I've mainly tried to make helpful comments), the old website is still up giving the latest on #Arctic #seaice #Greenland #icesheet and other datasets, but there's some fancy new stuff on the pipeline.
#StayTuned

https://nsidc.org/data/user-resources/data-announcements/user-notice-level-service-update-data-products

Who wants to work on coupling #IceSheet models into #GCMs? We have a 4 year position open @dmidk.bsky.social -come and join us in Copenhagen... (Part of the @icelink-project.bsky.social ) candidate.hr-manager.net/ApplicationI...

Global climate and ice sheet m...

The mighty ice sheet of Greenland

#greenland #arctic #ice #icesheet #aerialview #travel

aerial view on the ice sheet of greenland

The mighty ice sheet of Greenland

#greenland #arctic #ice #icesheet #aerialview #travel

'The ice melted beneath our feet': The huskies that revealed the rapid shrinking of Greenland's ice.

In 2019, climate scientist Steffen Olsen took a startling photo of huskies appearing to walk on water.

The photo quickly went viral as it revealed the reality of Greenland's rapidly melting ice.

https://mediafaro.org/article/20250316-the-ice-melted-beneath-our-feet-the-huskies-that-revealed-the-rapid-shrinking-of-greenlands-ice?mf_channel=mastodon&action=forward

#Greenland #Arctic #ClimateChange #Meteorology #Science #Ice #Icecaps #Icesheet

New Map Of Landscape Beneath Antarctica Unveiled
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https://phys.org/news/2025-03-landscape-beneath-antarctica-unveiled.html <-- shared technical article
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https://doi.org/10.1038/s41597-025-04672-y <-- shared paper
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#GIS #spatial #mapping #Bedmap3 #icebed #surface #thickness #gridded #datasets #Antarctica #raster #model #modeling #landscape #elevation #icesheet #survey #remotesensing #earthobservation #climatechange #warming #climate #melt #melting #seafloor #subglacial #geophysical #survey #topography #geology #bathymetry #topobathy #BritishAntarcticSurvey
@BritishAntarcticSurvey

schematic / flow chart - Schematic showing the Bedmp3 source datasets (white boxes) combining to make intermediate products (blue boxes) and ultimately the final set of grids (orange boxes) and their uncertainties (yellow boxes). Note that the surface grid has a uniform estimated uncertainty (Section Uncertainty estimates).

maps - Bedmap3 grids of (a) bed topography and (b) surface elevation, in metres above sea level (g104c geoid), and (c) ice thickness in metres. Locations labelled in (b) are referred to in the text

The BedMachine v3 bed has some subjective advantages over Bedmap3 where glacier flow is relatively fast, but survey data are sparse. (a) Surface flow speed43; (b) BedMachine v3 bed topography; (c) Bedmap3 bed topography, both overlaid on shaded relief and with survey data shown as grey lines. The black dotted line highlights a trough under slow-flowing ice that is more smoothly continuous in Bedmap3. The white oval highlights the trough of a relatively fast-flowing ice stream that in BedMachine v3 is more smoothly streamlined and subjectively more realistic than in Bedmap3, given the typical streamlined form of deglaciated ice stream landscapes. An objective test of bed accuracy in this area requires more survey data.

maps - The Bedmap3 survey dataset allows us to calibrate the more continuous and extensive freeboard-based ice shelf thickness grid. (a) Pointwise ice thickness biases between 119,000 survey measurements and the freeboard-derived ice thickness grid47 on the Ross Ice Shelf, showing coherent patterns of bias; (b) these pointwise offsets median-filtered over a 20 km radius; (c) spline-interpolated calibration grid of the filtered offsets in (b); (d) bias-corrected version of the freeboard-derived ice thickness grid after subtraction of the calibration grid in (c).

Scientists Just Uncovered a Hidden Force Behind Faster Ice Melt…

A recent study finds that #algae can store nutrients, potentially allowing them to spread across more of the #icesheet accelerating its darkening and melting...

https://formuchdeliberation.wordpress.com/2025/03/09/scientists-just-uncovered-a-hidden-force-behind-faster-ice-melt/

#Scientists discover hidden 'plumbing' that's driving #Antarctic #icesheet into the #ocean
Maps created by combining different models of #glaciers and ice sheets reveal the way water is flowing deep beneath #Antarctica's ice. Understanding how these vary is important for accurately predicting how much ice will flow into the ocean, and how quickly it will move. Current models predict that ice melt from Antarctica could result in #sealevelrise up to 12in (30cm) by 2100.
https://www.livescience.com/planet-earth/antarctica/scientists-discover-hidden-plumbing-thats-driving-antarctic-ice-sheet-into-the-ocean

#Greenland’s #glaciers are falling apart faster than expected
New 3D study shows meltwater driving fissures deeper into the glacial ice.
The study found that crevasses are expanding more quickly than previously detected, and somewhere between 50-90% of the water flowing through the Greenland Ice Sheet goes through crevasses, which can warm deeply submerged portions of the #glacier and increase lubrication between the base of the #icesheet and the bedrock it flows over.
https://arstechnica.com/science/2025/02/greenlands-glaciers-are-falling-apart-faster-than-expected/

"Melting ice sheets are slowing the Antarctic Circumpolar Current (ACC), the world's strongest ocean current, researchers have found. This melting has implications for global climate indicators, including sea level rise, ocean warming and viability of marine ecosystems".
#ocean #climatevariability #marine #ecosystems #Antarctic #icesheet #globalwarming

https://phys.org/news/2025-02-antarctic-ice-sheets-earth-strongest.html

Warm Seawater Encroaches On Major Antarctic Ice Shelf, Raising Sea Level Concerns
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https://phys.org/news/2025-01-seawater-encroaches-major-antarctic-ice.html <-- shared technical article
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https://doi.org/10.1029/2023JC020700 <-- shared paper
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#GIS #spatial #mapping #climatechange #Antarctic #Antarctica #icesheet #warmwater #oceancurrents #ocean #marine #iceshelves #WeddellSea #FilchnerRonneIceShelf #basal #melt #melting #rates #model #modeling #continentalshelf #spatiotemporal #observation #icecover #freshwater #global #sealevel #climatemodels #water #temperature #velocity #seawater #FilchnerTrough #spatialanalysis #oceandynamics

photo - view from a ship of part of the Filchner-Ronne Ice Shelf, Antarctica

maps and chart - Spatial map of southern Weddell Sea with summer (DJF) climatology and anomalies for sea ice concentration (SIC; a–d), zonal wind (e–h), and ocean surface stress curl (i–l).

Overview map of the Filchner Trough region in the eastern part of the southern continental shelf in the Weddell Sea. The bathymetry is from IBCSO (Arndt et al., 2013) with marked contours every 100 m. Grounded ice is shaded dark gray and floating ice shelves are light gray. Mooring locations are marked with colored circles, historic CTD casts with gray dots, and the deployment location of the APEX floats as diamonds. Red and blue arrows are a sketch of the circulation of relevant water masses, mWDW and ISW, respectively. The inset in the upper left shows the location of the study site.

maps and charts:
(a) Velocities from the moorings averaged within 0.1°C temperature bins
(b) Temperature (according to colorbar) along the float trajectories of Fst (brown diamond, through the Small Trough), Fsill (green diamond, along the eastern flank), and Fcs (purple diamond, within the Filchner Trough) at their parking depths of 400, 400, and 250 metres, respectively.
(histograms) temperature bins within the temperature ranges of ISW and mWDW.

@voooos wrote a science story about a research field trip on top of the Greenland ice sheet.

Oceanward ice flow at the ice core drilling site was found to be uniform from top to bottom, which was a major surprise and could have dire consequences for sea level rise.

https://www.science.org/content/article/hole-drilled-greenland-s-heart-reveals-ice-ready-slide-sea

#SeaLevelRise #Greenland #IceSheet #GlobalWarming #ClimateChange

Aerial view of the study site over the Greenland ice sheet.

video overview - glacier ice loss over two decades
#GIS #spatial #mapping #GlacierMassBalanceIntercomparison #glacial #glacier #global #cryosphere #regional #frehwater #water #resources #waterresources #watersecurity #sealevel #sealevelrise #SLR #rate #change #spatialanalysis #spatiotemporal #ice #snow #loss #massloss #greenland #antarctic #icesheet #anthropogenic #climatechange #melt #melting #risk #hazard #geohazard #geology #engineeringgeology #marine #terrestrial #ecosystems #watercycle #masschange #insitu #remotesensing #local #observation #model #modeling #projection

Glacier Melt Intensifying Freshwater Loss And Accelerating Sea-Level Rise
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https://www.esa.int/Applications/Observing_the_Earth/FutureEO/CryoSat/Glacier_melt_intensifying_freshwater_loss_and_accelerating_sea-level_rise <-- shared technical article
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https://doi.org/10.1038/s41586-024-08545-z <-- shared paper
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#GIS #spatial #mapping #GlacierMassBalanceIntercomparison #glacial #glacier #global #cryosphere #regional #freshwater #water #resources #waterresources #watersecurity #sealevel #sealevelrise #SLR #rate #change #spatialanalysis #spatiotemporal #ice #snow #loss #massloss #greenland #antarctic #icesheet #anthropogenic #climatechange #melt #melting #risk #hazard #geohazard #geology #engineeringgeology #marine #terrestrial #ecosystems #watercycle #masschange #insitu #remotesensing #local #observation #model #modeling #projection

map and charts - Global glacier mass changes from 2000 to 2023

charts - Annual and cumulative glacier mass change from 2000 to 2023

satellite image - Chugach Mountains, Alaska - Glaciers in the Chugach Mountains of Alaska. This image, captured by the Copernicus Sentinel-2 mission on 6 October 2017, shows the melting Scott (left), Sheridan (middle) and Childs (right) glaciers feeding lakes and rivers in their forefields.

photo - Golubin Glacier, Kyrgyzstan, 2012

The Greenland ice sheet is falling apart – new study
#Greenland #Environment #ClimateChange #Arctic #Glaciers #IceSheet #SeaLevelRise #GlobalWarming #Glaciology #ClimateCrisis #Sustainability #MeltingIce #GreenlandIceSheet
https://the-14.com/the-greenland-ice-sheet-is-falling-apart-new-study/

🆕Check out our latest 'Researcher in the Spotlight' feature on Max Brils , a post-doctoral researcher working at Northumbria University. 🧊

Learn more about Max here: https://ocean-ice.eu/researcher-in-the-spotlight-max-brils/

#polarscience #icesheet

Our @OceanIceEU project is launching a whole series of videos in collaboration with @PolarRES to explain key parts of the #IceSheet and #Climate system. In thi sone Tony Payne Payne explains #TippingPoints for #Greenland + #Antarctica.

And he does it really well! Worth checking out...

https://youtu.be/zJNz6xVcaBw

#Greenland’s #IceSheet A #Climate Emergency
https://youtube.com/shorts/vwSocwCi5Qk?si=LDJiogaSSo04Be4h

Nature.com: Increased crevassing across accelerating Greenland Ice Sheet margins…

Surface crevassing on the #Greenland #IceSheet is a large source of uncertainty in processes controlling mass loss due to a lack of comprehensive observations of their location and evolution through time... #climatechange

https://formuchdeliberation.wordpress.com/2025/02/04/nature-com-increased-crevassing-across-accelerating-greenland-ice-sheet-margins/

How is the ocean melting Antarctica? We're starting to figure it out
#climatechange #oceans #icesheet #melting #Antarctica

https://www.livescience.com/planet-earth/antarctica/how-is-the-ocean-melting-antarctica-were-starting-to-figure-it-out

#IceSheet

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