EGU2020-8988
https://doi.org/10.5194/egusphere-egu2020-8988
EGU General Assembly 2020
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

EnMAP airborne soil Greece campaign 2019

Sabine Chabrillat1, Thomas Ruhtz2, Georges Zalidis3, Eyal Ben-Dor4, Maximilian Brell1, Nikos Tziolas3, Robert Milewski1, Daniel Berger1, Saskia Foerster1, Theres Kuester1, Nikos Tsakiridis3, Vasilis Liakopoulos3, Theodora Angelopoulou3, Nikiforos Samarinas3, Nicolas Francos4, Kerry Cawse-Nicholson5, and Stefano Pignatti6
Sabine Chabrillat et al.
  • 1Helmholtz Zentrum Potsdam Deutsches GeoForschungsZentrum (GFZ), Section 1.4: Remote Sensing and Geoinformatics, Potsdam, Germany (chabri@gfz-potsdam.de)
  • 2Freie Universität Berlin, Institute for Space Sciences, Carl-Heinrich-Becker Weg 6-10, 12165 Berlin, Germany
  • 3School of Agriculture, Faculty of Agriculture, Forestry, and Natural Environment, Aristotle University of Thessaloniki, Thessaloniki, 54123, Greece
  • 4Tel Aviv University (TAU), Remote Sensing Laboratory (RSL), Department of Geography and Human Environment, Porter School of Environment and Earth Science, Tel Aviv 69978, Israel
  • 5Jet Propulsion Laboratory, California Institute of Technology, CA, USA
  • 6CNR IMAA, Institute of Methodologies for Environmental Analysis, 00133 Roma, Italy

In the frame of the science preparation activities for the upcoming German hyperspectral satellite mission EnMAP, an airborne survey took place in September 2019 with hyperspectral VNIR-SWIR-LWIR data using the HySpex sensor and the newly acquired Hyper-Cam LWIR camera from the GeoResearch Center Potsdam (GFZ) mounted on the airborne platform Cessna-T207A from the Free University Berlin (FUB). Although logistically complex conditions with several teams distributed in different locations, all the sites in central and northern Greece could be successfully acquired under clear sky conditions, and all data could be demilitarized providing 45 flight stripes covering a total area of 300 km2.

This abstract is focusing on the Amyntaio soil site in northern Greece, an agricultural area of variable soil composition from carbonate rich to clay/silt content to organic carbon rich fields around the lignite mine south of the area, over which 11 flight stripes could be acquired. The science goals of the Amyntaio soil campaign were: (a) Simulation of hyperspectral satellite imagery and demonstration of the potential of upcoming spaceborne hyperspectral sensors (EnMAP, CHIME) for global soil mapping and monitoring; (b) Large test and validation for existing soil algorithms such as the HYSOMA / ENSOMAP software tools for the prediction of top-soil quantitative surface properties; (c) Data validation and comparison of soil products with recent relevant satellite sensors (e.g. S2, PRISMA, ECOSTRESS); (d) Enlargement of global soil spectral libraries with harmonised standards and testbed for their use as calibration-validation data for soil spectral models.

Simultaneous to the airborne survey, an intensive ground-based campaign took place in the area focusing on the acquisition of soil data, VNIR-SWIR and LWIR in-situ data with field spectroradiometers (PSR+, ASD FieldSpec3, MEMS, Handheld FTIR), fractional vegetation cover with RGB and UAV RGB data, soil moisture, infiltrometer and spectral data in undisturbed soil crust with the SoilPRO device, and Cal-Val data acquisition at the same time than the overflight (Temperature-loggers, ASD VNIR-SWIR, handheld FTIR) over bare soils and black/white thermal targets.

We present the project objectives, selected field, airborne, satellite data, with preliminary analyses that show the high data quality and the potential of multi hyperspectral airborne campaigns as a support for basic science developments and satellite mission preparations. The results represent how more sensor flexibility can bridge the gap from in-situ to satellite scale. Further airborne flights and carefully designed in situ campaigns will allow testing and iterative improvement of new observational modalities for soil monitoring based on the integrated information from satellite platforms with the one provided by in-situ systems on the ground and air.

How to cite: Chabrillat, S., Ruhtz, T., Zalidis, G., Ben-Dor, E., Brell, M., Tziolas, N., Milewski, R., Berger, D., Foerster, S., Kuester, T., Tsakiridis, N., Liakopoulos, V., Angelopoulou, T., Samarinas, N., Francos, N., Cawse-Nicholson, K., and Pignatti, S.: EnMAP airborne soil Greece campaign 2019, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-8988, https://doi.org/10.5194/egusphere-egu2020-8988, 2020

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