Challenges In The Use Of Local Data For Regional Scale Mapping Of C And N Stocks In The Continuous Permafrost Zone At The Yukon Coastal Plain | Heatwave Risks To Tipping Point Of Permafrost
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https://doi.org/10.5194/soil-12-113-2026 <-- shared paper
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https://doi.org/10.1038/s41558-026-02603-2 <-- shared paper
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https://www.theguardian.com/environment/2026/aug/20/tipping-points-heatwaves-wildfires-permafrost-climate-crisis <-- shared media article
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https://www.cbc.ca/news/canada/north/permafrost-slumps-herschel-island-qikiqtaruk-yukon-9.7168780 <-- shared media article
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[putting together two different ‘sorts’/focuses of research/reporting, but…]
H/T @gustaf Hugelius | Professor at Stockholm University
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“Permafrost soils are particularly vulnerable to climate change. To assess and improve estimations of carbon (C) and nitrogen (N) budgets it is necessary to accurately map soil carbon and nitrogen in the permafrost region. In particular, soil organic carbon (SOC) stocks have been predicted and mapped by many studies from local to pan-Arctic scales. Several studies have been carried out at the Canadian Beaufort Sea coast, though no regional maps of terrestrial carbon stocks based on spatial modelling has been conducted yet. This study combines available field data from the Canadian Yukon coastal plain and uses it to map regional SOC and N stocks using the machine learning algorithm random forest and environmental variables based on remote sensing data. [The authors] developed models using the data for the entire region and separate models for the coastal mainland area and Qikiqtaruk Herschel Island. Each model was used to map SOC and N stocks for its respective area. [They] assessed the performance of the different random forest models by using crossvalidation. [They] further assessed model results using the Area of Applicability (AOA) method and the quantile regression forest approach, comparing the results and discussing their implications within the context of both methods. [They] explore[d] local differences in soil properties and how soil data distribution across the region affects the accuracy of the predictions of SOC and N stocks..."
#permafrost #soils #geology #climatechange #temperature #thawing #melting #emissions #CO2 #methane #carbon #nitrogen #GIS #spatial #mapping #Qikiqtaruk #HerschelIsland #Yukon #Canada #soilorganiccarbon #SOC #arctic #cryosphere #BeaufortSea #coast #coastal #machinelearning #model #modeling #remotesensing #earthobservation #carbonstocks #island #mainland #spatialanalysis #scale
#herschelisland — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #herschelisland, aggregated by home.social.
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‘The land is tearing itself apart’: life on a collapsing #Arctic isle
On #Qikiqtaruk, off Canada, researchers at the frontier of #ClimateChange are seeing its rich ecology slide into the sea as #MeltingPermafrost ice leaves little behind
“It’s one thing to think about what the changes mean to us, but I can’t imagine the fear and stress the animals feel as everything changes so fast. We’re supposed to be the guardians of the land. But we’ve let them down.” - Richard Gordon.
By Leyland Cecco, on Herschel Island–Qikiqtaruk
November 21, 2024"Armed with a fleet of drones and working closely with Indigenous Inuvialuit rangers, the team has revealed a rapid reshaping of the tundra with little precedent. As they race to understand what those changes might mean, a combination of rising seas, landslides and flooding mean the landscape is literally collapsing around them, making it harder to study an island that reflects the tumultuous future of the western Arctic."
#Inuvialuit #ClimateCatastrophe #Permafrost #Yukon #Canada #Landslides #Flooding #IndigenousCommunities #FirstNations #Qikiqtaruk #HerschelIsland