#tundra — Public Fediverse posts

Mapping Snow On Northern Winter Roads - A Dual-Frequency Polarimetric Radar Approach For Snow Characterization Over Land, Lake And Sea Ice
--
https://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

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

#cdnpoli #corporateCapture #mining

#event
#ManiFESTA: A CIDADE É NOSSA

Action day for #housing and #collectivism
📅 March 29
🕐 11am – 7pm
📍 Largo da Graça, #Lisbon

🎵 MUSIC
🥪 FOOD
🏃 GAMES and POPULAR SPORTS
👪 FAMILY ACTIVITIES
🧑‍🤝‍🧑 PERFORMANCE and HUMAN CHAIN

@climaximo
@jornalmapa
@StayGrounded_net
#GracaQuartel #StopDespejos #AMesaCantina #lefthandrotation #habita #tundra #rebenta #RedeApoioMutuo #Sirigaita #CulturaNoMuro #Mula #Goela #MenosAvioes #1esqHabitacao #solicoop #RedeCohabitar #VozesDeDentro #HousingActionsDays2026

#event
#ManiFESTA: A CIDADE É NOSSA

Action day for #housing and #collectivism
📅 March 29
🕐 11am – 7pm
📍 Largo da Graça, #Lisbon

🎵 MUSIC
🥪 FOOD
🏃 GAMES and POPULAR SPORTS
👪 FAMILY ACTIVITIES
🧑‍🤝‍🧑 PERFORMANCE and HUMAN CHAIN

@climaximo
@jornalmapa
@StayGrounded_net
#GracaQuartel #StopDespejos #AMesaCantina #lefthandrotation #habita #tundra #rebenta #RedeApoioMutuo #Sirigaita #CulturaNoMuro #Mula #Goela #MenosAvioes #1esqHabitacao #solicoop #RedeCohabitar #VozesDeDentro #HousingActionsDays2026

#evento
#ManiFESTA: A CIDADE É NOSSA

Jornada pela #habitação e o #coletivismo
📅29 Março
🕐11h - 19h
📍Largo da Graça, #Lisbon

🎵MÚSICA
🥪COMIDA
🏃JOGOS E DESPORTO POPULAR
👪ATIVIDADES PARA FAMÍLIAS
🧑‍🤝‍🧑PERFORMANCE E CORDÃO HUMANO

@climaximo
@jornalmapa
@StayGrounded_net
#GracaQuartel #StopDespejos #AMesaCantina #lefthandrotation #habita #tundra #rebenta #RedeApoioMutuo #Sirigaita #CulturaNoMuro #Mula #Goela #MenosAvioes #1esqHabitacao #solicoop #RedeCohabitar #VozesDeDentro #HousingActionsDays2026

#evento
#ManiFESTA: A CIDADE É NOSSA

Jornada pela #habitação e o #coletivismo
📅29 Março
🕐11h - 19h
📍Largo da Graça, #Lisbon

🎵MÚSICA
🥪COMIDA
🏃JOGOS E DESPORTO POPULAR
👪ATIVIDADES PARA FAMÍLIAS
🧑‍🤝‍🧑PERFORMANCE E CORDÃO HUMANO

@climaximo
@jornalmapa
@StayGrounded_net
#GracaQuartel #StopDespejos #AMesaCantina #lefthandrotation #habita #tundra #rebenta #RedeApoioMutuo #Sirigaita #CulturaNoMuro #Mula #Goela #MenosAvioes #1esqHabitacao #solicoop #RedeCohabitar #VozesDeDentro #HousingActionsDays2026

I 25.000 laghi che costellano l’altopiano di Putorana, tetto irraggiungibile della Siberia
https://www.jacoporanieri.com/blog/?p=44000

#luoghi #dalmondo #viaggi #altopiano #paesaggio #russia #eurasia #geologia #esplorazione #laghi #fiumi #montagne #siberia #solitudine #natura #ecologia #animali #ecosistema #tundra #taiga #settentrione #artico

Integrating Characteristic Arctic Vegetation In A Land Surface Model Improves Representation Of Carbon Dynamics Across A Tundra Landscape
--
https://doi.org/10.1029/2025JG009039 <-- shared paper
--
[ https://doi.org/10.3390/land14091839 <-- shared paper ]
--
#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
--
https://doi.org/10.1038/s41598-024-76292-2 <-- shared paper
--
#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

Understanding Wildfire Behaviour Across Alaska Using Remote Sensing Of Fire Intensity
--
https://www.usgs.gov/programs/ecosystems-land-change-science-program/news/understanding-wildfire-behavior-across-alaska <-- shared article
--
https://doi.org/10.1071/WF24062 <-- shared paper
--
https://www.sciencebase.gov/catalog/item/66c3aef6d34e03388287afd0 <-- shared USGS open data release - MODIS Fire Radiative Power Data Compiled From Active Fires In Alaska, 2003-2022
--
https://akfireinfo.com/ <-- shared Alaska Wildland Fire Information page
--
#GIS #spatial #mapping #WildfireScience #Alaska #RemoteSensing #satellite #WildfireAwarenessMonth #WildlandFireScience #fedscience #fedservice #wildfire #bushfire #blackspruce #boreal #fireintensity #fireradiativepower #FRP #MODIS #postfire #shrubland #tundra #whitespruce #peat #ecosystems #risk #hazard #management #planning #recovery #severity

SciTech Chronicles. . . . . . . . .Feb 4th, 2025

https://bit.ly/stc020425

#Graphene #Tattoos #Biosensors #epidermal #Boreal #MODIS #Migration #Tundra #exudates #methanogens #SUSIBA2 #fumarate #ethanol #Fibre-optic #DAS #axis #algorithm #Honeybee #Varroa #timeframe #adherence #treatment

Oceanic Evasion Fuels Arctic Summertime Rebound Of Atmospheric Mercury And Drives Transport To Arctic Terrestrial Ecosystems
--
https://doi.org/10.1038/s41467-025-56300-3 <-- shared paper
--
#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

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.

---
#FromOneLine 320
#MastoPrompt, #MicroPrompt, #rise365, #vssnature, #BrknShards, #mpotd, #vss365, #Whistpr
#WritingCommunity

@FrostPoem
@stevencudahy