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17 posts · Last used 11d

Eugene @datastory@mstdn.ca
· 1mo ago
⚠️ Why standard GIS routing (D8, Sink Fill) fails in complex mining regions: 300m open pits become fake "lakes", and underground river tunnels are completely ignored. To map surface drainage across central Kryvyi Rih, I built a custom DEM hydro-conditioning pipeline: 🔹 Selective sink filtering (true pits vs DEM noise) 🔹 Subsurface conduit burn-in (diversion tunnels) 🔹 Closed micro-catchment delineation Crucial for geochemical transport & geotechnical risks. 🛠️ #RStats (#terra, #Rsagacmd), #QGIS, #SAGAGIS #GIS #Hydrology #HydroEnforcement #FOSSGIS #Mining #Geospatial #KryvyiRih #DigitalTerrainAnalysis
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Eugene @datastory@mstdn.ca
· 2mo ago
Which Calgary neighborhoods are best built to withstand summer heatwaves? 🌳☀️ To measure structural climate resilience across the city, I conducted a spatial analysis of 193 established residential communities, calculating the Solid-to-Tree Ratio—comparing bare artificial surfaces (asphalt, concrete, rooftops) directly against total tree canopy area. Here are the Top 10 most shade-rich and climate-resilient communities in Calgary: 🟢 Queens Park Village — 0.3 (Just 0.3 ha of hard surface for every 1 ha of canopy!) 🟢 Discovery Ridge — 0.5 🟢 Roxboro — 0.5 🟢 Wildwood — 0.6 🟢 Rideau Park — 0.7 🟢 Medicine Hill — 0.8 🟢 Upper Mount Royal — 0.8 🟢 Crestmont — 0.9 🟢 Elbow Park — 0.9 🟢 Shaganappi — 0.9 👇 The full interactive dataset and study are here: https://www.datastory.org.ua/calgarys-microclimatic-anatomy-what-lies-beneath-the-citys-green-appearance/ #UrbanAnalytics #GeospatialData #RemoteSensing #GIS #UrbanForestry #CityPlanning #Calgary #DataScience #Microclimate #MachineLearning #GreennessOfCalgary #RStats #FOSSGIS
Calgary’s Microclimatic Anatomy: What Lies Beneath the City’s Green Appearance?
DataStory

Calgary’s Microclimatic Anatomy: What Lies Beneath the City’s Green Appearance?

Half of Calgary’s area consists of artificial and impervious surfaces: asphalt, roofs, parking lots, and paved areas. If non-residential zones are excluded to focus solely on residential communitie…

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geoObserver @geoObserver@mastodon.social
· 2mo ago
Buchtipp: „Künstliche Intelligenz in Geodäsie und Geoinformatik“ / Book recommendation: ‘Artificial Intelligence in Geodesy and Geoinformatics’ https://geoobserver.de/2026/07/24/buchtipp-kuenstliche-intelligenz-in-geodaesie-und-geoinformatik/ #ai #ki #gistribe #gischat #fossgis #foss4g #OSGeo #spatial #geospatial #opensource #gis #geo #geoObserver pls RT
geoobserver.de

Buchtipp: „Künstliche Intelligenz in Geodäsie und Geoinformatik“ | #geoObserver

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geoObserver @geoObserver@mastodon.social
· 2mo ago
Aufruf: Hochwasser-Daten für den Geobasis_Loader gesucht! / Call for submissions: Flood data wanted for the Geobasis_Loader! https://geoobserver.de/2026/07/14/aufruf-hochwasser-daten-fuer-den-geobasis_loader-gesucht/ #qgis #plugin #switch2qgis #gistribe #gischat #fossgis #spatial #geospatial #opensource #opendata #gis #geo #geoObserver pls RT
geoobserver.de

Aufruf: Hochwasser-Daten für den Geobasis_Loader gesucht! | #geoObserver

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Eugene @datastory@mstdn.ca
· 5mo ago
Boosted by @virtuous_sloth@cosocial.ca
It is a common belief that higher elevations are naturally cooler. In pristine landscapes, this rule holds firm. But what about urban environments? Humanity moves vast amounts of matter and energy, sometimes fundamentally altering the thermodynamic parameters of our habitat. 🛰️ I correlated summer Land Surface Temperature (LST) data across Calgary’s neighborhoods with the Canadian Medium-Resolution Digital Elevation Model (MRDEM). The chart below illustrates the relationship between "Average Elevation" and "Average Surface Temperature" specifically for established residential communities. As observed, this relationship is notably weak, even though a slight cooling trend persists. Based on my data analysis, elevation above sea level is not a key factor in cooling the city. #Calgary #OpenData #UrbanHeat #DataScience #ClimateAction #YYC #GreennesOfCalgary #ClimateEquity #EnvironmentalEquity #CityPlanning #RemoteSensing #RStats #Landsat #fossgis #DigitalElevationModel
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