Satellite data map reveals 33 subglacial lakes beneath the Canadian Arctic

Researchers have created the first map of a network of #subglacial #lakes in the Canadian #Arctic showing 33 bodies of water under glaciers. Using a decade of #ArcticDEM satellite data of Earth's surface height, a team of researchers including the University of Waterloo has developed a method that allowed them to track the draining and filling of active subglacial lakes in unprecedented detail. The team's paper is published in The Cryosphere.

https://phys.org/news/2026-04-satellite-reveals-subglacial-lakes-beneath.html

#Cryophere
#RemoteSensing

Just heard on #Cryolist that the Polar Geospatial center at U. of Minnesota is losing their funding. These guys have a huge range of data products including super high resolution digital elevation models of both Arctic and Antarctica.

(#ArcticDEM + #REMA )

This is just naked vandalism.

ArcticDEM appreciation map

This August, Polar Geospatial Center released yet another batch of #ArcticDEM elevation models for the Arctic, which includes Iceland. Having access to free DEMs at resolution of 2by2 meters is hugely beneficial for research agencies like The Icelandic Met Office. For us, ArcticDEM is the foundation for all surface modeling including large glacier outburst floods, avalanches, landslides and as an input orography for our weather forecasts. A true high value dataset!

Does #OSMAnd have a bug/feature bounty program that one can sponsor?

Because the heightmap issue is annoying me a surprising amount and I alas have other stuff I need to focus on ...

So if someone feels like converting the #ArcticDEM data set into a 10x10m heightmap layer that works with Osmand, do get in touch 🙂

https://github.com/osmandapp/OsmAnd/issues/18992

#OpenSource #BugBounty #FeatureBounty

Arcane gdal incantations, undocumented #OsmAnd processing scripts, Gigabytes of #ArcticDEM data vs one disgruntled me.

Let's see who fails first.

The terrain / slope / contour lines data for #Hornstrandir in #OSMAnd is still wrong.

Their support (Pro subscriber) refers me to #OpenStreetMap. OSM says "Terrain data is another data set, no can do".

According to OSMAnd's docs, this is from #ArcticDEM. Which doesn't have this artifact in their online explorer.

When I search the web on what to do, my first hit is my old post on Mastodon asking for what to do.

_rubs temples_