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001034152 005__ 20241217215531.0
001034152 037__ $$aFZJ-2024-06963
001034152 1001_ $$0P:(DE-Juel1)168418$$aBrogi, Cosimo$$b0$$eCorresponding author$$ufzj
001034152 1112_ $$a7th International COSMOS Workshop$$cRoyal Hillsborough$$d2024-09-24 - 2024-09-26$$wUK
001034152 245__ $$aUse of satellite-based vegetation indices and thermal neutron intensities to investigate biomass effects on roving CRNS measurements
001034152 260__ $$c2024
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001034152 520__ $$aThe use of roving cosmic-ray neutron sensors (CRNS) can provide soil moisture (SM) information over large areas. These can be extremely useful, for example, in the validation of land-surface models and satellite-based SM products. However, there are challenges in roving CRNS applications that are not yet resolved. For instance, detailed biomass information is often needed to obtain accurate SM estimates.Between June and November 2023, five roving CRNS measurements were performed in the Selke River catchment (Saxony Anhalt, Germany) as part of a joint field campaign of the CosmicSense project. Over 1000 km of measurements were conducted with the FZJ rover (Hydroinnova LLC, Albuquerque, NM, USA) that was equipped with 36 detector tubes. Of these tubes, 20 were moderated by 25 mm high density polyethylene (HDPE) to measure neutrons in the epithermal energy regime while 16 tubes were left bare to shift the measured energy towards the thermal energy regime.In addition, 19 stationary CRNS along different land covers of the study area were available for support. Four of these were CRS-2000 (Hydroinnova LLC, Albuquerque, NM, USA) equipped with moderated and bare detectors that were placed in agricultural areas. Vegetation indices such as NDVI were derived from Sentinel-2 satellite images at 10 m resolution to estimate/proxy biomass close to the roving dates. Additionally, land cover and land use information were used to stratify the study area into the most representative cover types.The temporal and spatial relationships between satellite-based vegetation indices and thermal or epithermal neutron intensities were investigated. The SM estimated from epithermal neutrons was compared with data from the available stationary CRNS and from in-situ measurements and samples. It was then explored whether thermal neutron intensities can be used to improve roving SM estimates by providing on-the-fly corrections of epithermal measurements for the surrounding biomass.
001034152 536__ $$0G:(DE-HGF)POF4-2173$$a2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217)$$cPOF4-217$$fPOF IV$$x0
001034152 536__ $$0G:(GEPRIS)357874777$$aDFG project G:(GEPRIS)357874777 - FOR 2694: Large-Scale and High-Resolution Mapping of Soil Moisture on Field and Catchment Scales - Boosted by Cosmic-Ray Neutrons (357874777)$$c357874777$$x1
001034152 7001_ $$0P:(DE-Juel1)129440$$aBogena, Heye$$b1$$ufzj
001034152 7001_ $$0P:(DE-Juel1)200141$$aCapitanio, Emilio$$b2
001034152 7001_ $$0P:(DE-HGF)0$$aRocha, Alby Duarte$$b3
001034152 7001_ $$0P:(DE-Juel1)192205$$aNieberding, Felix$$b4$$ufzj
001034152 7001_ $$0P:(DE-Juel1)129472$$aHuisman, Johan Alexander$$b5$$ufzj
001034152 8564_ $$uhttps://cosmos2024.org/#:~:text=WELCOME!&text=On%2024%E2%80%9326%20September%202024,outside%20Belfast%20in%20Northern%20Ireland.
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001034152 9141_ $$y2024
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