#tundra — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #tundra, aggregated by home.social.
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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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https://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 -
Who is served by this stupid #CarneyCon road across the #tundra through #caribou habitat? Not local people. Not Northern people? Maybe not even #Canadians. https://www.cbc.ca/news/canada/north/new-film-on-nunavut-megaproject-raises-concerns-about-caribou-and-the-people-who-hunt-them-9.7265941
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Integrating Characteristic Arctic Vegetation In A Land Surface Model Improves Representation Of Carbon Dynamics Across A Tundra Landscape
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https://doi.org/10.1029/2025JG009039 <-- shared paper
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[ https://doi.org/10.3390/land14091839 <-- shared paper ]
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#tundra #arctic #vegetation #spatialanalysis #arcticwarming #warming #climate #carbon #carbonsink #carbonsource #carbondynamics #carboncycle #EnergyExascale #earthsystemmodels #ESM #model #modeling #plant #functional #PFT #Alaska #Seward #Peninsula #casestudy #biomass #ecosystem #remotesensing #scaling #drone #aircraft #insitu #GIS #spatial #sampling #earthsystem -
Frozen No More - A Case Study Of Arctic Permafrost Impacts Of Oil And Gas Withdrawal
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https://doi.org/10.1038/s41598-024-76292-2 <-- shared paper
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#GIS #spatial #mapping #remotesening #earthobservation #oil #gas #oilandgas #O&G #energy #extraction #drilling #exploration #subsurface #permafrost #melting #humanimpacts #climatechange #oilextraction #risk #hazard #riskassessment #water #hydrology #sediment #tundra #oilwellpads #NorthSlope #Alaska #arctic #spatialanalysis #spatiotemporal #remediation #drillpad #oilpad #lease #industry #habitat #ecosystem #fieldwork #sampling #geology #engineeringgeology #impact -
Here is a landscape oil painting of cottongrass growing on tundra in the arctic. It shows the wilderness of Alaska on the North Slope among the foothills of the Brooks Range. In the midnight sun's light are distant fields, meadows, the moon and lakes.
Fine art prints:
https://fineartamerica.com/featured/fields-of-arctic-cotton-ever-billotte.html#tundra #arctic #Alaska #wilderness #BrooksRange #cottongrass #NorthSlope #ArcticCotton #fields #OilPainting
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Oceanic Evasion Fuels Arctic Summertime Rebound Of Atmospheric Mercury And Drives Transport To Arctic Terrestrial Ecosystems
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https://doi.org/10.1038/s41467-025-56300-3 <-- shared paper
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#GIS #spatial #mapping #mercury #Hg #contamination #summerrebound #arctic #summertime #atmospheric #transport #contaminate #terrestrial #ecosystems #Hg0 #model #modeling #framework #spatialanalysis #spatiotemporal #concentrations #seaice #atmosphere #river #riverine #GDAS #GEOS #GEOSChem #MERRA2 #GTMM #global #NDVI #remotesensing #cycling #marine #ocean #water #hydrology #seawater #icemelt #anthropogenic #coast #coastal #tundra #permafrost #climatechange #evasion #vegetation #uptake #mitigation -
Tundra Vegetation To Grow Taller, Greener Through 2100, Nasa Study Finds
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https://landsat.gsfc.nasa.gov/article/tundra-vegetation-to-grow-taller-greener-through-2100-nasa-study-finds/ <-- shared technical article
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https://doi.org/10.1038/s43247-024-01454-z <-- shared paper
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#GIS #spatial #mapping #model #modeling #climatechange #Alaska #Yukon Alaska #Canada #Scandinavia #Russia #boreal #borealforests #forests #vegetation #tundra #permafrost #remotesensing #satellite #ICESat2 #landsat #spatialanalysis #spatiotemporal #forecast #biome #landscape #canopy #transitional #canopycover #ABoVE #forest #hydrobasins #water #hydrology #taiga #canopyheight #cimp6 #SSP #bioclimate
@nasa -
Thomsen River Estuary, Banks Island [NASA Earth Observatory Daily Image]
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https://earthobservatory.nasa.gov/images/147560/thomsen-river-estuary-banks-island <-- link to NASA Earth Observatory image
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[photos in the main from 2015]
#GIS #spatial #mapping #remotesensing #OLI #hydrology #water #sediment #arctic #ocean #climatechange #ArcticOcean #landsat #landsat8 #BanksIsland #Aulavik #ice #snow #permafrost #tundra #Canada #ThomsenRiver #estuary #sedimentation #erosion #braiding #braided #hydrodynamics #geochemistry #geology #acidification
@nasa -
It was not an easy door to open.
When she did, #boundless possibilities became, the threshold a #liminal space between #illusion and potential. Arctic desert morphed to #tundra upon new #sentiments that #burnt away the shackles.
A pang of pain, an old #acquaintance, told her, it was not quite yet time to #celebrate.
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#FromOneLine 320
#MastoPrompt, #MicroPrompt, #rise365, #vssnature, #BrknShards, #mpotd, #vss365, #Whistpr
#WritingCommunity -
@RSMacKinnon "Scientists say #Russia is #warming at least 2.5 times faster than the rest of the world, melting the long-frozen #tundra that covers about 65% of the country's landmass and releasing #GreenhouseGases stored in the thawed soil.
"The 'gateway to the #underworld,' as some locals in Russia's Sakha Republic also call it, has a scientific name: a mega-slump.
"And while it may attract tourists, the slump's expansion is 'a sign of danger,' said Nikita Tananayev, lead researcher at the Melnikov Permafrost Institute in #Yakutsk."
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The 2022 NOAA #ArcticReportCard is out (https://arctic.noaa.gov/Report-Card/Report-Card-2022) with important new information, including a change in the pan-Arctic #greening signal from the last two reports. Specifically that the #satellite greening trend has declined likely due to a changing #disturbance regime in the Siberian #Arctic, as well as an overall increase in the frequency of disturbances across the pan Arctic region. You can find the #tundra greeness chapter here https://arctic.noaa.gov/Report-Card/Report-Card-2022/ArtMID/8054/ArticleID/986/Tundra-Greenness