0000000000736331

AUTHOR

Patrick Rademske

showing 3 related works from this author

Sun Induced Fluorescence Calibration and Validation for Field Phenotyping

2018

Reliable measurements of Sun Induced Fluorescence (SIF) require a good instrument characterization as well as a complex processing chain. In this paper, we summarize the state of the art SIF retrieval methods and measurements platforms for field phenotyping. Furthermore, we use HyScreen, hyperspectral-imaging system for top of canopy measurements of SIF, as an example of the instrument requirements, data process, and data validation needed to obtain reliable measurements of SIF.

Data processingAnd field spectrometerCalibration and validationRetrievals method010504 meteorology & atmospheric sciencesField (physics)FIS/06 - FISICA PER IL SISTEMA TERRA E PER IL MEZZO CIRCUMTERRESTREComputer scienceSun Induced fluorescenceGEO/12 - OCEANOGRAFIA E FISICA DELL'ATMOSFERAData validationHyperspectral measurement010501 environmental sciences01 natural sciencesReflectivityFluorescenceField phenotyping0105 earth and related environmental sciencesRemote sensingIGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium
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Exploring the spatial relationship between airborne-derived red and far-red sun-induced fluorescence and process-based GPP estimates in a forest ecos…

2019

International audience; Terrestrial gross primary productivity (GPP) plays an essential role in the global carbon cycle, but the quantification of the spatial and temporal variations in photosynthesis is still largely uncertain. Our work aimed to investigate the potential of remote sensing to provide new insights into plant photosynthesis at a fine spatial resolution. This goal was achieved by exploiting high-resolution images acquired with the FLuorescence EXplorer (FLEX) airborne demonstrator HyPlant. The sensor was flown over a mixed forest, and the images collected were elaborated to obtain two independent indicators of plant photosynthesis. First, maps of sun-induced chlorophyll fluore…

Forest ecosystems[SDV.SA]Life Sciences [q-bio]/Agricultural sciences010504 meteorology & atmospheric sciencesFIS/06 - FISICA PER IL SISTEMA TERRA E PER IL MEZZO CIRCUMTERRESTRE0208 environmental biotechnologyGEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIASpectral fitting methodSoil Science02 engineering and technology01 natural sciencesArticleCarbon cycleGEO/11 - GEOFISICA APPLICATAAtmospheric radiative transfer codesAirborne spectroscopyForest ecologySun-induced chlorophyll fluorescenceddc:550LUEEcosystemAPARSun-induced chlorophyll fluorescenceSpectral fitting methodPlant traitsINFORMGPPAPARLUEBESSForest ecosystemsHyPlantAirborne spectroscopyComputers in Earth SciencesChlorophyll fluorescenceBESS0105 earth and related environmental sciencesRemote sensingPlant traitsINFORMGEO/12 - OCEANOGRAFIA E FISICA DELL'ATMOSFERAGeology15. Life on land020801 environmental engineeringSpatial heterogeneityGEO/10 - GEOFISICA DELLA TERRA SOLIDA13. Climate actionHyPlantEnvironmental scienceSpatial variabilityGPPScale (map)
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Red and Far-Red Fluorescence Emission Retrieval from Airborne High-Resolution Spectra Collected by the Hyplant-Fluo Sensor

2018

The contribution presents the development and testing of a fluorescence retrieval scheme based on the ESA's FLuorescence EXplorer mission concept. The algorithm employs on a coupled surface-atmosphere forward model at oxygen absorption bands: i) the atmospheric effect is computed by MODTRAN5; ii) the surface reflectance and fluorescence are modeled by means of the Spectral Fitting approach. The algorithm, previously tested on numerical simulations, was further implemented and optimized to process real observations collected by the FLEX airborne demonstrator HyPlant. The retrieval scheme has been tested on a number of flight lines collected in several locations, different ecosystems types, a…

SIF010504 meteorology & atmospheric sciencesSun-Induced Chlorophyll FluorescenceAtmospheric model01 natural sciencesFluorescenceFLEX010309 opticsHyPlant0103 physical sciencesLine (geometry)Range (statistics)FLEXEnvironmental scienceHigh resolution spectraSpectral fittingSpectral-FittingAbsorption (electromagnetic radiation)0105 earth and related environmental sciencesRemote sensingIGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium
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