Search Results - "Sayde, Chadi"

High-Resolution Monitoring of Scour Using a Novel Fiber-Optic Distributed Temperature Sensing Device: A Proof-of-Concept Laboratory Study by Hatley, Rebecca, Shehata, Mahmoud, Sayde, Chadi, Castro-Bolinaga, Celso

“…Scour events can severely change the characteristics of streams and impose detrimental hazards on any structures built on them. The development of robust and…”
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Water use and radiation balance of miscanthus and corn on marginal land in the coastal plain region of North Carolina by Carvalho, Henrique D. R., Howard, Adam M., Crozier, Carl R., Johnson, Amy M., Sayde, Chadi, Chinn, Mari S., Godfrey, Edward E., Heitman, Joshua L.

“…Miscanthus is a perennial grass that can yield substantial amounts of biomass in land areas considered marginal. In the Coastal Plain region of North Carolina,…”
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Heated Fiber Optic Distributed Temperature Sensing: A Dual‐Probe Heat‐Pulse Approach by Javier Benítez-Buelga, Chadi Sayde, Leonor Rodríguez-Sinobas, John S. Selker

“…Implementation of the dual‐probe heat‐pulse (DPHP) approach for measurement of volumetric heat capacity (C) and water content (θ) with distributed temperature…”
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High‐Resolution Field Measurement of Soil Heat Capacity and Changes in Soil Moisture Using a Dual‐Probe Heat‐Pulse Distributed Temperature Sensing Approach by Shehata, Mahmoud, Heitman, Joshua, Sayde, Chadi

“…Increasing interest in studying the variability of soil water content and its spatial scale dependency necessitates the development of new techniques to…”
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Characterizing soil water content variability across spatial scales from optimized high-resolution distributed temperature sensing technique by Shehata, Mahmoud, Gentine, Pierre, Nelson, Natalie, Sayde, Chadi

“…•A new method to calibrate DTS soil moisture (θ) field installations was tested.•The new calibration method resulted in a mean soil moisture RMSE of 0.03…”
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Optimization of the number and locations of the calibration stations needed to monitor soil moisture using distributed temperature sensing systems: A proof-of-concept study by Shehata, Mahmoud, Gentine, Pierre, Nelson, Natalie, Sayde, Chadi

“…•A novel methodology to optimize the calibration of the SPHP-DTS technique.•Soil moisture calibration stations were optimized using Hierarchical…”
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High‐Resolution Measurement of Soil Thermal Properties and Moisture Content Using a Novel Heated Fiber Optics Approach by Shehata, Mahmoud, Heitman, Joshua, Ishak, Joseph, Sayde, Chadi

“…Hydrological parameters are scale dependent. Efficient monitoring techniques capable of measuring hydrological parameters, such as soil moisture content (θ),…”
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Laboratory observations for examining estimates of soil dry surface layer thickness with parsimonious models by Mathers, Cara, Robarge, Wayne, Walker, John, Sayde, Chadi, Heitman, Joshua

“…Soil dry surface layer (DSL) thickness is often considered a key parameter for land surface resistance to gas exchange. Commonly used, simple models for DSL…”
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Failure of Taylor's hypothesis in the atmospheric surface layer and its correction for eddy‐covariance measurements by Cheng, Yu, Sayde, Chadi, Li, Qi, Basara, Jeffrey, Selker, John, Tanner, Evan, Gentine, Pierre

“…Taylors' frozen turbulence hypothesis suggests that all turbulent eddies are advected by the mean streamwise velocity, without changes in their properties…”
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High‐resolution wind speed measurements using actively heated fiber optics by Sayde, Chadi, Thomas, Christoph K., Wagner, James, Selker, John

“…We present a novel technique to simultaneously measure wind speed (U) at thousands of locations continuously in time based on measurement of velocity‐dependent…”
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High-Resolution Measurement of Soil Thermal Properties and Moisture Content Using a Novel Heated Fiber Optics Approach by Shehata, Mahmoud, Heitman, Joshua, Ishak, Joseph, Sayde, Chadi

“…Hydrological parameters are scale dependent. Efficient monitoring techniques capable of measuring hydrological parameters, such as soil moisture content (θ),…”
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Classifying the nocturnal atmospheric boundary layer into temperature and flow regimes by Pfister, Lena, Lapo, Karl, Sayde, Chadi, Selker, John, Mahrt, Larry, Thomas, Christoph K.

“…We propose a classification scheme for nocturnal atmospheric boundary layers and apply it to investigate the spatio‐temporal structure of air temperature and…”
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Feasibility of soil moisture monitoring with heated fiber optics by Sayde, Chadi, Gregory, Christopher, Gil-Rodriguez, Maria, Tufillaro, Nick, Tyler, Scott, van de Giesen, Nick, English, Marshall, Cuenca, Richard, Selker, John S.

“…Accurate methods are needed to measure changing soil water content from meter to kilometer scales. Laboratory results demonstrate the feasibility of the heat…”
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A Model for Turbulence Spectra in the Equilibrium Range of the Stable Atmospheric Boundary Layer by Cheng, Yu, Li, Qi, Argentini, Stefania, Sayde, Chadi, Gentine, Pierre

“…Stratification can cause turbulence spectra to deviate from Kolmogorov's isotropic −5/3 power law scaling in the universal equilibrium range at high Reynolds…”
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Mapping variability of soil water content and flux across 1-1000 m scales using the Actively Heated Fiber Optic method by Sayde, Chadi, Buelga, Javier Benitez, Rodriguez-Sinobas, Leonor, El Khoury, Laureine, English, Marshall, van de Giesen, Nick, Selker, John S.

“…The Actively Heated Fiber Optic (AHFO) method is shown to be capable of measuring soil water content several times per hour at 0.25 m spacing along cables of…”
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A Model for Turbulence Spectra in the Equilibrium Range of the Stable Atmospheric Boundary Layer by Cheng, Yu, Li, Qi, Argentini, Stefania, Sayde, Chadi, Gentine, Pierre

“…Stratification can cause turbulence spectra to deviate from Kolmogorov's isotropic -5/3 power law scaling in the universal equilibrium range at high Reynolds…”
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Calibration of soil moisture sensing with subsurface heated fiber optics using numerical simulation by Benítez‐Buelga, Javier, Rodríguez‐Sinobas, Leonor, Sánchez Calvo, Raul, Gil‐Rodríguez, María, Sayde, Chadi, Selker, John S.

“…The heat pulse probe method can be implemented with actively heated fiber optics (AHFO) to obtain distributed measurements of soil water content (θ) by using…”
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Quantitative analysis of the radiation error for aerial coiled-fiber-optic distributed temperature sensing deployments using reinforcing fabric as support structure by Sigmund, Armin, Pfister, Lena, Sayde, Chadi, Thomas, Christoph K

“…In recent years, the spatial resolution of fiber-optic distributed temperature sensing (DTS) has been enhanced in various studies by helically coiling the…”
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Mapping high‐resolution soil moisture and properties using distributed temperature sensing data and an adaptive particle batch smoother by Dong, Jianzhi, Steele‐Dunne, Susan C., Ochsner, Tyson E., Hatch, Christine E., Sayde, Chadi, Selker, John, Tyler, Scott, Cosh, Michael H., van de Giesen, Nick

“…This study demonstrated a new method for mapping high‐resolution (spatial: 1 m, and temporal: 1 h) soil moisture by assimilating distributed temperature…”
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Mapping variability of soil water content and flux across 1–1000 m scales using the A ctively H eated F iber O ptic method by Sayde, Chadi, Buelga, Javier Benitez, Rodriguez‐Sinobas, Leonor, El Khoury, Laureine, English, Marshall, van de Giesen, Nick, Selker, John S.

“…The Actively Heated Fiber Optic (AHFO) method is shown to be capable of measuring soil water content several times per hour at 0.25 m spacing along cables of…”
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