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#melt

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💧🌏 Greg Cocks

Glacial Lake Mapping Using Remote Sensing Geo-Foundation Model
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doi.org/10.1016/j.jag.2025.104 <-- shared paper
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HIGHLIGHTS:
• Proposed U-ViT model based on Prithvi GFM for multi-sensor glacial lake mapping.
• Achieved an F1 score of 0.894 on Sentinel-1&2, surpassing CNNs scoring below 0.8.
• Maintains strong performance with 50% less training data, proving efficiency.
• Excels in detecting small lakes (<0.01km²) and handling clouds and complex terrains..."
#GIS #spatial #mapping #glaciallake #GeospatialFoundationModel #satellite #Sentinel #GaoFen #remotesensing #earthobservation #model #modeling #climatechange #glacial #glacier #melt #melting #UViT #deepleanring #AI #framework #performance #metrics #opensource

phot - glacier with glacial lake, Karakoram mountain range
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💧🌏 Greg Cocks

Glacier Melt Intensifying Freshwater Loss And Accelerating Sea-Level Rise
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esa.int/Applications/Observing <-- shared technical article
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doi.org/10.1038/s41586-024-085 <-- 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
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Nonilex

[The parentheses are my edits / additions. When reviewing the study & the quotes by Dr. Brearley, the statement about #melting #icebergs not contributing to #SeaLevelRise appears to be specific only to icebergs that melt in a #TaylorColumn. The author of the article does not make that clear, which could lead to misunderstanding. The study was specific. Therefore #A23a’s melt will only NOT contribute to rising sea levels IF it STAYS within the vortex for the duration of its #melt.]

#Climate
Continued thread
Public
Nonilex

“It’s basically just sitting there, spinning around & it will very slowly #melt — as long as it stays there. What we don’t know is how quickly it will… come out of this,” said Alex Brearley, an #oceanographer & head of Open #Oceans research grp at the British #Antarctic Survey.

…#Iceberg #A23a is caught in a #TaylorColumn, a current that forms around seamounts. Standard flow diverges around the mount & creates a stagnant cylinder of fluids above it, slowly rotating the water counterclockwise.

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