Eugene5d ago

How much does landform position matter for vegetation dynamics across Calgary?

I explored how ΔNDVI (2025-2024) varies across geomorphon classes (summit, ridge, slope, hollow, valley, etc.) using a large spatial dataset (~194k observations).

A few key points from the analysis:
• Non-parametric Kruskal–Wallis test shows statistically significant differences between geomorphons
• However, the effect size is moderate (ε² ≈ 0.04)
• Distributions strongly overlap — landform position matters, but it is not a deterministic driver
• Median ΔNDVI tends to be higher in lower landscape positions (hollows, footslopes, valleys), consistent with moisture and accumulation controls

#EnvironmentalData #RemoteSensing #NDVI #LandscapeEcology #Geomorphology #DataAnalysis #RStats
#ReproducibleResearch #Calgary #GreennessOfCalgary #Sentinel2

Christopher Kyba 🇨🇦🇪🇺Jan 16

Nighttime lights in #Sentinel2: https://www.esa.int/Applications/Observing_the_Earth/Copernicus/Sentinel-2/Sentinel-2_explores_night_vision

#RemoteSensing #Sentinel2NG #LightPollution #Copernicus

EyeJan 15

Sentinel-2 explores night vision.

#ESA #EO #Sentinel2

https://www.esa.int/Applications/Observing_the_Earth/Copernicus/Sentinel-2/Sentinel-2_explores_night_vision#msdynmkt_trackingcontext=a91368f0-2417-47cb-b320-e4e5b30d0000

Sentinel-2 explores night vision

After more than 10 years in orbit, the first Copernicus Sentinel-2 satellite, Sentinel-2A, is still finding new ways to contribute to Earth observation. With its younger siblings, Sentinel-2B and Sentinel-2C, now leading the mission’s core task of delivering high-resolution, ‘camera-like’ images of Earth’s surface, the European Space Agency is pushing Sentinel-2A beyond its original remit.In recent trials, this elderly satellite was even switched on at night to see how it would perform in the dark – and the results have been strikingly positive, offering encouraging news for the follow-on Copernicus Sentinel-2 Next Generation mission, currently in development.

RevesdespaceJan 7
❄️ Nouvelles images satellites de l'Europe sous la neige : Bruxelles et Amsterdam, et l'Europe du Nord, le 6 janvier
📷 #Sentinel2 et Sentinel-3 #Copernicus
RevesdespaceJan 6
❄️ Il n'y a pas qu'en France qu'il a neigé. En Grèce aussi lors du réveillon du Nouvel An ou à Utrech aux Pays-Bas le 4 janvier, comme le montrent ces images prises par le satellite #Sentinel2 du programme européen #Copernicus
EyeJan 6

Mountain ecosystems of Greenland.

#EU #Copernicus #Sentinel2 #Greenland

https://www.copernicus.eu/en/media/image-day-gallery/mountain-ecosystems-greenland

Mountain ecosystems of Greenland | Copernicus

EyeJan 2

Sal (salt) Island, Cabo Verde.

#EU #Copernicus #Sentinel2 #CapeVerde

https://www.copernicus.eu/en/media/image-day-gallery/sal-island-cape-verde

Sal Island, Cape Verde | Copernicus

RevesdespaceDec 28
🌋 Impressionnante vue depuis l'espace par le satellite #Sentinel2 de l' #Etna enpleine éruption le 27 décembre.
via @tonyveco
YouStormDec 27
The snow-covered Sharr Mountains on the borders of Kosovo, North Macedonia, and Albania rising above stratocumulus clouds seen by #Sentinel2 on 26 December
YouStormDec 27
An Australian summer white Christmas! A blast from the south off the Southern Ocean brought summer snowfall to the mountains of #Tasmania. After the clouds cleared the settled snow was captured this morning by #Sentinel2 #whitechristmas