Search Results - "Josef Köppl, Christian"

Drone-Based Hyperspectral and Thermal Imagery for Quantifying Upland Rice Productivity and Water Use Efficiency after Biochar Application by Jin, Hongxiao, Köppl, Christian Josef, Fischer, Benjamin M. C., Rojas-Conejo, Johanna, Johnson, Mark S., Morillas, Laura, Lyon, Steve W., Durán-Quesada, Ana M., Suárez-Serrano, Andrea, Manzoni, Stefano, Garcia, Monica

“…Miniature hyperspectral and thermal cameras onboard lightweight unmanned aerial vehicles (UAV) bring new opportunities for monitoring land surface variables at…”
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Hyperspectral and Thermal Sensing of Stomatal Conductance, Transpiration, and Photosynthesis for Soybean and Maize under Drought by Sobejano-Paz, Verónica, Mikkelsen, Teis Nørgaard, Baum, Andreas, Mo, Xingguo, Liu, Suxia, Köppl, Christian Josef, Johnson, Mark S., Gulyas, Lorant, García, Mónica

“…During water stress, crops undertake adjustments in functional, structural, and biochemical traits. Hyperspectral data and machine learning techniques (PLS-R)…”
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Mapping Root-Zone Soil Moisture Using a Temperature–Vegetation Triangle Approach with an Unmanned Aerial System: Incorporating Surface Roughness from Structure from Motion by Wang, Sheng, Garcia, Monica, Ibrom, Andreas, Jakobsen, Jakob, Josef Köppl, Christian, Mallick, Kaniska, Looms, Majken, Bauer-Gottwein, Peter

“…High resolution root-zone soil moisture (SM) maps are important for understanding the spatial variability of water availability in agriculture, ecosystems…”
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Unmanned Aerial System (UAS) observations of water surface elevation in a small stream: Comparison of radar altimetry, LIDAR and photogrammetry techniques by Bandini, Filippo, Sunding, Tanya Pheiffer, Linde, Johannes, Smith, Ole, Jensen, Inger Klint, Köppl, Christian Josef, Butts, Michael, Bauer-Gottwein, Peter

“…Water Surface Elevation (WSE) is an important hydrometric observation, useful to calibrate hydrological models, predict floods, and assess climate change…”
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Hyperspectral reflectance measurements from UAS under intermittent clouds: Correcting irradiance measurements for sensor tilt by Köppl, Christian J., Malureanu, Radu, Dam-Hansen, Carsten, Wang, Sheng, Jin, Hongxiao, Barchiesi, Stefano, Serrano Sandí, Juan M., Muñoz-Carpena, Rafael, Johnson, Mark, Durán-Quesada, Ana M., Bauer-Gottwein, Peter, McKnight, Ursula S., Garcia, Monica

“…One great advantage of optical hyperspectral remote sensing from unmanned aerial systems (UAS) compared to satellite missions is the possibility to fly and…”
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