#urbanforestry — Public Fediverse posts

Does urban greenery yield microclimatic cooling? Spatial analysis of Calgary (Summer 2025) shows a non-linear NDVI vs LST response.

🛠 Stack: Google Earth Engine (Landsat 8/9, Sentinel-2) + R (terra, tidyverse).

📊 Key Findings:
🔹 Cooling Deficit (NDVI < 0.34): LST stays trapped at 35–36°C. Heat stress overrides evapotranspiration; saplings & isolated lawns fail to cool.
🔹 Tipping Point (NDVI > 0.34): Cooling begins above 0.34. Dense canopy (NDVI > 0.70) suppresses LST below 28–30°C (6–8°C delta).

💡 Takeaway: Urban forestry can't just count saplings. Without threshold canopy density, isolated greenery is decoration, not climate infrastructure.

🔗 Link to the research:
https://www.datastory.org.ua/calgarys-summer-heat-a-2025-satellite-perspective/

#RemoteSensing #GIS #RStats #rspatial #terra #tidyverse #GoogleEarthEngine #UrbanForestry #Calgary #YYC #OpenData #GreennessOfCalgary #FOSSGIS #Landsat #Sentinel2

Improving our Coasts with High-Resolution Land Cover Data [#NOAA]
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https://coast.noaa.gov/states/stories/landcover.html <-- shared technical article
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https://coast.noaa.gov/ccapatlas/ <-- on-demand, online NOAA CCAP Landcover Atlas
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https://coast.noaa.gov/digitalcoast/data/ccaphighres.html <-- #opendata C-CAP High-Resolution Land Cover
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Use Case Examples:
• Flood Inundation Modeling and Risk Assessment
• Stormwater Management and Water Quality Protection
• Heat Risk and Urban Forestry
• Wetland Monitoring, Conservation, or Restoration Planning
• Other – e.g., Discovering Gaps in Broadband Access
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#GIS #spatial #mapping #NOAA #DigitalCoast #LandCover #CoastalManagement #GeospatialData #EnvironmentalData #ResilientCommunities #landcover #usecase #economics #remotesensing #earthobservation #opendata #floodinnundation #waterquality #water #hydrology #risk #hazard #spatialanalysis #spatiotemporal #stormwater #management #heatrisk #urbanforestry #wetland #monitoring #conservation #planning #resortation
@noaa #NOAAOfficeForCoastalManagement