#digitalelevationmodel — Public Fediverse posts

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

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

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

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

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

Overland Flow Pathways [England]
--
https://environment.data.gov.uk/dataset/36e7f4d3-61b2-4e64-aaa2-2b85bceb61a9 <-- shared technical resource / overview
--
#GIS #spatial #mapping #environment #Elevation #Hydrography #hydrology #remotesensing #survey #hydrologicflow #flow #catchment #DigitalElevationModel #LiDAR #remotesensing #earthobservation #opendata #UK #England #Britain #overlandflow #water #hydrology #risk #hazard #pollution #soil #erosion #flood #flooding #risk #hazard #naturalhazard #network #polyline #DTM #landscape #slope #D8 #watershed #ponding #flowdirection #environment #hydroenforced #digitalterrainmodel
#OrdnanceSurvey | #UKEnvironmentAgency

Overland Flow Pathways [England]
--
https://environment.data.gov.uk/dataset/36e7f4d3-61b2-4e64-aaa2-2b85bceb61a9 <-- shared technical resource / overview
--
#GIS #spatial #mapping #environment #Elevation #Hydrography #hydrology #remotesensing #survey #hydrologicflow #flow #catchment #DigitalElevationModel #LiDAR #remotesensing #earthobservation #opendata #UK #England #Britain #overlandflow #water #hydrology #risk #hazard #pollution #soil #erosion #flood #flooding #risk #hazard #naturalhazard #network #polyline #DTM #landscape #slope #D8 #watershed #ponding #flowdirection #environment #hydroenforced #digitalterrainmodel
#OrdnanceSurvey | #UKEnvironmentAgency

Overland Flow Pathways [England]
--
https://environment.data.gov.uk/dataset/36e7f4d3-61b2-4e64-aaa2-2b85bceb61a9 <-- shared technical resource / overview
--
#GIS #spatial #mapping #environment #Elevation #Hydrography #hydrology #remotesensing #survey #hydrologicflow #flow #catchment #DigitalElevationModel #LiDAR #remotesensing #earthobservation #opendata #UK #England #Britain #overlandflow #water #hydrology #risk #hazard #pollution #soil #erosion #flood #flooding #risk #hazard #naturalhazard #network #polyline #DTM #landscape #slope #D8 #watershed #ponding #flowdirection #environment #hydroenforced #digitalterrainmodel
#OrdnanceSurvey | #UKEnvironmentAgency

Overland Flow Pathways [England]
--
https://environment.data.gov.uk/dataset/36e7f4d3-61b2-4e64-aaa2-2b85bceb61a9 <-- shared technical resource / overview
--
#GIS #spatial #mapping #environment #Elevation #Hydrography #hydrology #remotesensing #survey #hydrologicflow #flow #catchment #DigitalElevationModel #LiDAR #remotesensing #earthobservation #opendata #UK #England #Britain #overlandflow #water #hydrology #risk #hazard #pollution #soil #erosion #flood #flooding #risk #hazard #naturalhazard #network #polyline #DTM #landscape #slope #D8 #watershed #ponding #flowdirection #environment #hydroenforced #digitalterrainmodel
#OrdnanceSurvey | #UKEnvironmentAgency

Overland Flow Pathways [England]
--
https://environment.data.gov.uk/dataset/36e7f4d3-61b2-4e64-aaa2-2b85bceb61a9 <-- shared technical resource / overview
--
#GIS #spatial #mapping #environment #Elevation #Hydrography #hydrology #remotesensing #survey #hydrologicflow #flow #catchment #DigitalElevationModel #LiDAR #remotesensing #earthobservation #opendata #UK #England #Britain #overlandflow #water #hydrology #risk #hazard #pollution #soil #erosion #flood #flooding #risk #hazard #naturalhazard #network #polyline #DTM #landscape #slope #D8 #watershed #ponding #flowdirection #environment #hydroenforced #digitalterrainmodel
#OrdnanceSurvey | #UKEnvironmentAgency

New #DigitalElevationModel data shows Tintina faultine in northern Canada is more geologically active than previously thought and could be due for a major quake #earthquakes https://gogeomatics.ca/canadian-geospatial-digest-for-august-4-2025/ #ArcticDEM #LidarDem

"ETOPO 2022 is an updated topographic–bathymetric dataset at 15 arcsec global resolution that incorporates bare-Earth datasets with forests and buildings removed. ETOPO 2022 integrates more than a dozen source datasets for land topography, sea bathymetry, lake bathymetry, and ice-sheet bed elevation data, all of which have been carefully evaluated for quality, accuracy, and seamless integration."

Quality controlled with nearly a trillion #ICESat2 #LIDAR shots.

Did some successful microwave keyhole shots back in the day, using #SRTM data. This would have been even better.

#DigitalElevationModel
#DEM

https://essd.copernicus.org/articles/17/1835/2025/

"ETOPO 2022 is an updated topographic–bathymetric dataset at 15 arcsec global resolution that incorporates bare-Earth datasets with forests and buildings removed. ETOPO 2022 integrates more than a dozen source datasets for land topography, sea bathymetry, lake bathymetry, and ice-sheet bed elevation data, all of which have been carefully evaluated for quality, accuracy, and seamless integration."

Quality controlled with nearly a trillion #ICESat2 #LIDAR shots.

Did some successful microwave keyhole shots back in the day, using #SRTM data. This would have been even better.

#DigitalElevationModel
#DEM

https://essd.copernicus.org/articles/17/1835/2025/

"ETOPO 2022 is an updated topographic–bathymetric dataset at 15 arcsec global resolution that incorporates bare-Earth datasets with forests and buildings removed. ETOPO 2022 integrates more than a dozen source datasets for land topography, sea bathymetry, lake bathymetry, and ice-sheet bed elevation data, all of which have been carefully evaluated for quality, accuracy, and seamless integration."

Quality controlled with nearly a trillion #ICESat2 #LIDAR shots.

Did some successful microwave keyhole shots back in the day, using #SRTM data. This would have been even better.

#DigitalElevationModel
#DEM

https://essd.copernicus.org/articles/17/1835/2025/

"ETOPO 2022 is an updated topographic–bathymetric dataset at 15 arcsec global resolution that incorporates bare-Earth datasets with forests and buildings removed. ETOPO 2022 integrates more than a dozen source datasets for land topography, sea bathymetry, lake bathymetry, and ice-sheet bed elevation data, all of which have been carefully evaluated for quality, accuracy, and seamless integration."

Quality controlled with nearly a trillion #ICESat2 #LIDAR shots.

Did some successful microwave keyhole shots back in the day, using #SRTM data. This would have been even better.

#DigitalElevationModel
#DEM

https://essd.copernicus.org/articles/17/1835/2025/

"ETOPO 2022 is an updated topographic–bathymetric dataset at 15 arcsec global resolution that incorporates bare-Earth datasets with forests and buildings removed. ETOPO 2022 integrates more than a dozen source datasets for land topography, sea bathymetry, lake bathymetry, and ice-sheet bed elevation data, all of which have been carefully evaluated for quality, accuracy, and seamless integration."

Quality controlled with nearly a trillion #ICESat2 #LIDAR shots.

Did some successful microwave keyhole shots back in the day, using #SRTM data. This would have been even better.

#DigitalElevationModel
#DEM

https://essd.copernicus.org/articles/17/1835/2025/

I was going to ask the #Earth #Observation community, including @EOMasters, if there were good online resources to access and process #DigitalElevationModel (DEM) data.

But just found out that my ace colleague @LukeDataManager had done a detailed workflow and published it online.

https://nordatanet.github.io/Exploring_FAIR_data_with_Python/Global_and_regional_bathymetry.html

Note to self: be more like Luke and publish my workflows

#OpenScience

[Canadian] National Elevation Data Strategy Newsletter [NRCAN]
--
https://gogeomatics.ca/national-elevation-data-strategy-a-significant-coverage-increase/ <-- shared technical newsletter
--
#GIS #spatial #mapping #remotesensing #LiDAR #elevation #opendata #airborneLiDAR #AutomaticallyExtractedBuildings #buildingfootprints #Canada #CanElevation #CGVD2013 #CopernicusDEM #dataacquisition #digitalelevationmodel #DEM #Digitalsurfacemodel #DigitalTerrainModel #DSM #DTM #elevationproducts #FloodHazardMapping #geographicdata #highresolutiondata #HRDEM #HRDEMmosaic #PointCloud #mediumresolutionelevationmodel #MRDEM #NAD83 #NationalElevationDataStrategy #NRCAN #topographicaldata #vectorformat #flood #flooding #extremeweather #climatechange #naturalhazard #risk #hazard #datacoverage
@NRCAN

[Canadian] National Elevation Data Strategy Newsletter [NRCAN]
--
https://gogeomatics.ca/national-elevation-data-strategy-a-significant-coverage-increase/ <-- shared technical newsletter
--
#GIS #spatial #mapping #remotesensing #LiDAR #elevation #opendata #airborneLiDAR #AutomaticallyExtractedBuildings #buildingfootprints #Canada #CanElevation #CGVD2013 #CopernicusDEM #dataacquisition #digitalelevationmodel #DEM #Digitalsurfacemodel #DigitalTerrainModel #DSM #DTM #elevationproducts #FloodHazardMapping #geographicdata #highresolutiondata #HRDEM #HRDEMmosaic #PointCloud #mediumresolutionelevationmodel #MRDEM #NAD83 #NationalElevationDataStrategy #NRCAN #topographicaldata #vectorformat #flood #flooding #extremeweather #climatechange #naturalhazard #risk #hazard #datacoverage
@NRCAN

[Canadian] National Elevation Data Strategy Newsletter [NRCAN]
--
https://gogeomatics.ca/national-elevation-data-strategy-a-significant-coverage-increase/ <-- shared technical newsletter
--
#GIS #spatial #mapping #remotesensing #LiDAR #elevation #opendata #airborneLiDAR #AutomaticallyExtractedBuildings #buildingfootprints #Canada #CanElevation #CGVD2013 #CopernicusDEM #dataacquisition #digitalelevationmodel #DEM #Digitalsurfacemodel #DigitalTerrainModel #DSM #DTM #elevationproducts #FloodHazardMapping #geographicdata #highresolutiondata #HRDEM #HRDEMmosaic #PointCloud #mediumresolutionelevationmodel #MRDEM #NAD83 #NationalElevationDataStrategy #NRCAN #topographicaldata #vectorformat #flood #flooding #extremeweather #climatechange #naturalhazard #risk #hazard #datacoverage
@NRCAN

[Canadian] National Elevation Data Strategy Newsletter [NRCAN]
--
https://gogeomatics.ca/national-elevation-data-strategy-a-significant-coverage-increase/ <-- shared technical newsletter
--
#GIS #spatial #mapping #remotesensing #LiDAR #elevation #opendata #airborneLiDAR #AutomaticallyExtractedBuildings #buildingfootprints #Canada #CanElevation #CGVD2013 #CopernicusDEM #dataacquisition #digitalelevationmodel #DEM #Digitalsurfacemodel #DigitalTerrainModel #DSM #DTM #elevationproducts #FloodHazardMapping #geographicdata #highresolutiondata #HRDEM #HRDEMmosaic #PointCloud #mediumresolutionelevationmodel #MRDEM #NAD83 #NationalElevationDataStrategy #NRCAN #topographicaldata #vectorformat #flood #flooding #extremeweather #climatechange #naturalhazard #risk #hazard #datacoverage
@NRCAN

[Canadian] National Elevation Data Strategy Newsletter [NRCAN]
--
https://gogeomatics.ca/national-elevation-data-strategy-a-significant-coverage-increase/ <-- shared technical newsletter
--
#GIS #spatial #mapping #remotesensing #LiDAR #elevation #opendata #airborneLiDAR #AutomaticallyExtractedBuildings #buildingfootprints #Canada #CanElevation #CGVD2013 #CopernicusDEM #dataacquisition #digitalelevationmodel #DEM #Digitalsurfacemodel #DigitalTerrainModel #DSM #DTM #elevationproducts #FloodHazardMapping #geographicdata #highresolutiondata #HRDEM #HRDEMmosaic #PointCloud #mediumresolutionelevationmodel #MRDEM #NAD83 #NationalElevationDataStrategy #NRCAN #topographicaldata #vectorformat #flood #flooding #extremeweather #climatechange #naturalhazard #risk #hazard #datacoverage
@NRCAN

The Basics of LiDAR - Light Detection and Ranging - Remote Sensing [tree focused]
--
https://www.neonscience.org/resources/learning-hub/tutorials/LiDAR-basics <-- shared tutorial
--
[this post should not be considered an endorsement of any organisation, but is shared for learning purposes]
“LiDAR or Light Detection and Ranging is an active remote sensing system that can be used to measure vegetation height across wide areas.
This [tutorial] page… introduce[s the] fundamental LiDAR (or lidar) concepts including:
• What LiDAR data are.
• The key attributes of LiDAR data.
• How LiDAR data are used to measure trees...”
#GIS #spatial #mapping #elevation #spatialdata #spatialanalysis #data #digital #DEM #digitalelevationmodel #spatialanalysis #LiDAR #remotesensing #model #modeling #IFSAR #onlinelearning #onlinelessons #tutorial #landform #geomorphology #landforms #guide #vegetation #forest #forestry #tree #trees

🇦🇹 Dear colleagues, the session 𝗡𝗼𝘃𝗲𝗹 𝗱𝗮𝘁𝗮, 𝗺𝗲𝘁𝗵𝗼𝗱𝘀 𝗮𝗻𝗱 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝗶𝗻 𝗚𝗲𝗼𝗺𝗼𝗿𝗽𝗵𝗼𝗺𝗲𝘁𝗿𝘆 at European Geosciences Union (EGU) 2024 is scheduled for Mon, 15 Apr, 10:45–12:30 (CEST) in Room G1 🟪 (orals) and 16:15–18:00 (CEST) in Hall X1 🟪 (posters)

👉 Join us to attend great oral & poster contributions!

📋 Full list of contributions & info about the session:
https://lnkd.in/dtSkqt6V

#EGU2024 #geomorphometry #spatialanalysis #spatialdata #geomorphology #lidar #digitalelevationmodel

What Is A Digital Elevation Model (DEM)?- A Practical Guide
--
https://equatorstudios.com/what-is-a-digital-elevation-model-dem <-- shared tutorial
--
“A Digital Elevation Model (DEM) is a digital cartographic dataset that represents a continuous topographic elevation surface through a series of cells. Each cell represents the elevation (Z) of a feature at its location (X and Y). Digital Elevation Models are a “bare earth” representation because they only contain information about the elevation of geological (ground) features, such as valleys, mountains, and landslides, to name a few. They do not include any elevation data concerning non-ground features, such as vegetation or buildings...”
[read more at the link above...]
#GIS #spatial #mapping #elevation #spatialdata #spatialanalysis #data #digital #DEM #digitalelevationmodel #spatialanalysis #LiDAR #remotesensing #model #modeling #IFSAR #onlinelearning #onlinelessons #guide #tutorial #landform #bathymetry #geomorphology #geology #landforms