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#northern — Public Fediverse posts

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

  1. Mapping Snow On Northern Winter Roads - A Dual-Frequency Polarimetric Radar Approach For Snow Characterization Over Land, Lake And Sea Ice
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    doi.org/10.5194/tc-20-4367-2026 <-- shared paper
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    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…”
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    “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

  2. theconversation.com/the-scotti. It's clear the #AMS system is a very imperfect system of #proportional #representation - #PR - producing #disproportional #results, as John Curtice notes, @ScottishGreens. #STV in multi-member constituencies, as used for the #Northern #Ireland #Assembly #elections, & for the Dáil Éireann in the #Irish #Republic, is preferable, & is certainly preferable to the #closed #Party #list system in multi-member constituencies now in use for the #Welsh #Senedd.

  3. La Oliva Council will create over 500 new parking spaces in Corralejo
    The La Oliva City Council has announced the launch of two major projects that will add more than 500 new parking spaces in Corralejo ↗, with the aim of improving mobility and responding to one of the main neighborhood demands in the northern part of the municipa
    fuerteventura.world/la-oliva-c
    #Council #important #improve #launch #mobility #municipal #northern #Oliva #parking #projects
    #Fuerteventura

  4. #Interrail day 6/7: from #Nottingham with #Northern to #Sheffield, with #CrossCountry to #Edinburgh, with #ScotRail to #Aberdeen, and then with #LNER to #London #KingsCross.
    Especially the leg in #Scotland is absolutely breathtaking, and the first class service of LNER is comparable to business class flights (I didn’t even have a reservation) 😳

    I think this will be my #1 tour for a long time ♥️

    #train #bahn #brompton

  5. #FossilAdventCalendar Day 20
    #Terrestrial Tuesday

    Today we think of #lions as predators of the African savanna, but during the last #IceAge, they had a much wider distribution. Some lived in what's now the continental US, while another - the so-called cave #lion - lived in cold environments across the #Northern Hemisphere. This skull, displayed in the #AmericanMuseumOfNaturalHistory in front of its distant relative Smilodon, was found in #Alaska 🇺🇸 - our first specimen from the Last Frontier!

  6. #FossilAdventCalendar Day 16
    #FossilFriday

    This exploration of #fossils from the #Arctic nations wouldn't be complete without one of the most spectacular #dinosaur fossils ever found that happens to be named for the #North. Borealopelta, meaning "#Northern Shield," is a #nodosaur, a type of #ankylosaur, or #armored dinosaur. This #fossil, uncovered in the tar sands of #Alberta 🇨🇦 and displayed in the #RoyalTyrrellMuseum, preserves much of that armor in incredible detail.

  7. there is #tropo tonight in #Northern #Europe : the pirate stream I was listening to from #Twente closed down (its midnight, the DJ sounded quite tired) and I could hear a German station in the background (they wouldn't normally deliberately cut across a licensed broadcaster, BNetzA don't like it!), and when I turned on the #FM #radio in my stairwell I can hear NPO Radio 1 on 104,4 loud and clear (but I didn't really want to listen to their boring political discourse 😆 )

    #radiomonitoring

  8. #radio enthusiasts: there is a big #tropo lift in #UK and #Northern #Europe atm, I am monitoring French and Dutch stations loud and clear on Band II (FM) from the landing of my house with just the internal antenna of my Sangean RX (for some reason the best reception is on the stairwell next to the airing cupboard, I think an old piece of copper pipe in there (not connected to anything at either end) acts as a reflector 😉

    #radiomonitoring

    dxinfocentre.com/tropo_nwe.htm