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#seaice — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #seaice, aggregated by home.social.

  1. "all this ICE got me changing my climate"

    Small seaice bot progress update, mostly done with downloading and ingesting the entire US as vector shapefiles, converting to GeoJSON and a touch more work to index into the db.

    Pumping BigXThe Plug while we crawl up ICE's ass....

    @seaice_usa @seaice

    #BigXThaPlug #TracksToHackTo #Climate #ICEWatch #devlog #seaice

  2. The U.S. National Ice Center's Northwest Passage (connecting the northwest Atlantic to the Pacific Ocean) sea ice analysis product was last updated three weeks ago. This is not helpful.
    @Climatologist49 @ZLabe

    usicecenter.gov/Products/Arcti

    #SeaIce #Arctic

  3. Mapping Snow On Northern Winter Roads - A Dual-Frequency Polarimetric Radar Approach For Snow Characterization Over Land, Lake And Sea Ice
    --
    doi.org/10.5194/tc-20-4367-2026 <-- shared paper
    --
    H/T @Monojit Saha | Geospatial Analysis | Remote Sensing | Satellite Altimetry | Cryosphere
    “Winter roads are essential transportation links for many remote northern communities, but their safety and reliability depend strongly on snow conditions and ice growth. In this study [link above], [the authors] evaluated a fully polarimetric, dual-frequency Ku- and Ka-band radar approach for retrieving snow depth across landfast sea ice, lake ice, and tundra.
    Using field measurements near Churchill, Manitoba, and Resolute Bay, Nunavut [Canada], [they] found that the approach produced snow-depth retrieval bias and error within 3 cm over landfast ice, with encouraging Ku-band performance over frozen ground as well. [They] also developed an interface-detection approach for lake ice that can retrieve both snow depth and ice thickness - a promising direction for characterizing conditions relevant to winter-road planning and safety…”
    --
    “Winter roads are lifelines for remote northern communities. Built over land, lakes, rivers, and sea ice, these travel routes are increasingly vulnerable to warming temperatures and variable precipitation. To ensure safety and adapt to these changes, operators require high-resolution monitoring of snow depth across these diverse surfaces, as natural snow accumulation dictates ice growth rates, route viability and road stability. This study extends our polarimetric radar method, previously demonstrated on pack ice, to landfast sea ice, tundra, and frozen lakes and assesses how well we can retrieve snow depth over these surfaces. Results indicate consistency with earlier sea ice analyses, maintaining a mean snow depth retrieval bias and error within 3 cm over the landfast ice. Promising performance is also found over frozen ground using Ku-band (mean biases less than 6 cm). To address the specific challenge of lake ice, which includes strong returns from the ice/water interface, we present a new interface-detection technique that simultaneously retrieves snow depth and ice thickness. While current validation focuses on undisturbed snow, this approach could provide a path forward for characterizing the cryospheric environment in a way that can directly support the optimization of winter roads…”
    #Cryosphere #RemoteSensing #Snow #SeaIce #LakeIce #WinterRoads #characterisation #ArcticResearch #EarthObservation #PolarScience #maintainence #ploughing #winter #roads #transportation #northern #communities #mines #FirstNation #canada #remotesensing #polarimetric #radar #snowdepth #ice #landfastice #iceroad #tundra #Churchill #Manitoba #ResoluteBay #Nunavut #monitoring #planning #safety #trucking #freight

  4. #PolarBears in the #BarentsSea are staying fat despite rapid sea #ice loss
    #Arctic #bears may be surviving by shifting to new food sources
    When #seaice goes away, bears get thinner. If bears in a population are losing fat, that can be an early warning population will decline.
    Researchers are interested in polar bears living on #Svalbard because relationship between sea ice and fat loss should be strong. Polar bears there shouldn’t have much fat.
    sciencenews.org/article/polar-
    archive.ph/7GAAw

  5. Whorls of Sea Ice

    Fresh snow shines white on the southern end of Greenland in this satellite image, taken in late February 2025. Whorls of sea ice sit off the coast, where they trace out patterns that reflect the winds and ocean currents of the region. Arctic sea ice typically reaches its largest extent by early March before experiencing a long season of melting. Both the presence and absence of sea ice have a large effect on the Arctic regions. Sea ice helps dampen wave activity; without it, seas are higher and more dynamic, creating more aerosols that seed cloud cover in the Arctic and elsewhere. (Image credit: L. Dauphin; via NASA Earth Observatory)

    #climateChange #fluidDynamics #oceanCurrents #physics #satelliteImage #science #seaIce

  6. Tracking Ice Floes

    To understand why some sea ice melts and other sea ice survives, researchers tracked millions of floes over decades. This herculean undertaking combined satellite data, weather reports, and buoy data into a database covering nearly 20 years of data. With all of that information, the team could track the changes to specific pieces of ice rather than lumping data into overall averages.

    They found that an ice floe’s fate depended strongly on the route it took: ice that slipped from its starting region into warmer, more southern regions was likely to melt. They also saw region-specific effects, like that thick sea ice was more likely to melt in the East Siberian Sea’s summer, possibly due to warmer currents. The comprehensive, fine-grained analyses possible with this ice-tracking technique offer a chance to understand why some Arctic regions are more vulnerable to warming than others. (Image credit: D. Cantelli; research credit: P. Taylor et al.; via Eos)

    #climateChange #Eulerian #fluidDynamics #Lagrangian #melting #physics #planetaryScience #science #seaIce

  7. Polarstern reaches North Pole awi.de/en/about-us/service/pre

    "Five weeks after setting sail from #Tromsø, #Norway, the @awi #ResearchVessel #Polarstern makes a stop at the northernmost point on Earth. Here, too, the international team of #researchers is investigating the coupling between #SeaIce, the #ocean and its life, including within the #DeepSea... the team has discovered an amazing #biodiversity at a previously unmapped #seamount at 1500 meters depth, under the ice."

  8. #ClimateChange: Due to #SeaIce retreat, #zooplankton could remain in the deep longer
    phys.org/news/2023-08-due-sea- #Polarstern #ResearchVessel #ClimateCrisis #Arctic @awi

    Sea-ice decline could keep zooplankton deeper for longer nature.com/articles/s41558-023

    "sunlight is now penetrating deeper and deeper into the #ocean. Since marine zooplankton respond to the available light, this is also changing their behavior—especially how the tiny organisms rise and fall within the water column."