Seasonal vegetation cycle in France, Vercors, observed with Sentinel-2 by TU Delft students – Vesc 2017 Fieldwork

CougoirVesc.png
Land cover classification in 2 seasons based on Sentinel-2 surface reflectance in France, Cougoir area (Drome department – close to Chatteauneuf-de-Bordette). Works performed by Gijs van Ouwerkerk, Freek Smit & Beer van Esser, Bsc TUDelft students, Applied Earth Sciences, during the Vesc 2017 campaign.

Back in Delft after the Vesc 2017 FieldWork performed in France, Bsc TU Deft students have been very busy with final processing of Sentinel-2 datasets, interpretation and evaluating their land cover performances. Many analyses have been done to find out how much information could be extracted and how much clouds, observation spatial resolutions, instrument defaults et many other elements could affect their results.

Among other things, first seasonal analyses have been achieved on Sentinel-2 surface reflectance between 2016 and 2017. Although this work is preliminary, and we likely need to improve our methodologies and tools in the future, nice results were shown.

All the groups, with their different approaches and land cover tools, managed to detect and observe, from remotely, vegetation cycles in France, through the seasons, with Sentinel-2 sensor. In particular, it is very impressive to see how healthy and very green biomass (e.g. deciduous trees and grasses) grow up from the end of Winter to Summer and start disappearing again starting mid-Autumn. From mid-Autumn to end of Winter, a lot of classes more related to bare soils start appearing. Although the given names (or identifications) are likely not true, they well represent land covers with very little to null vegetation present at their surfaces.

A great work achieved in a short time by TU Delft Bsc students! Looking forward to learn and discover more in the next years!

 

More information?

  • Previous (2014-2015-2016) field-campaigns in Vesc, France, land covers classification with LandSat-8 here
  • Vesc field-campaign 2017 here
  • Sentinel-2 COPERNICUS ESA mission here
  • TU Delft Bsc Applied Earth Sciences here
  • TU Delft Master Geoscience & Remote Sensing (GRS) here
  • French Vesc area here
PommerolVesc.png
Land cover classification in 2 seasons based on Sentinel-2 surface reflectance in France, Pommerol area (Drome department – close to La Motte Chalancon). Works performed by Marja Machielse, Sophie van RIjn & Harm Duncker, Bsc TUDelft students, Applied Earth Sciences, during the Vesc 2017 campaign.

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