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Arthur W. Warrick
University of Arizona
GeologyInfiltration (hydrology)Soil waterHydrologyFlow (psychology)
129Publications
29H-index
2,591Citations
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Publications 130
Newest
#1M. Sadeghi (UMN: University of Minnesota)H-Index: 2
#2Lun Gao (UMN: University of Minnesota)H-Index: 1
Last. Arthur W. Warrick (UA: University of Arizona)H-Index: 29
view all 7 authors...
Abstract Passive microwave radiometry from space through missions such as the Soil Moisture and Ocean Salinity (SMOS) and Soil Moisture Active Passive (SMAP) satellites is the most reliable means for mapping global surface soil moisture (SSM). Nonetheless, microwave SSM retrievals are uncertain over densely vegetated surfaces or areas with high radio frequency interference. This paper presents a new observationally driven approach to remote sensing of global SSM based on the terrestrial water st...
2 CitationsSource
#1Morteza Sadeghi (USU: Utah State University)H-Index: 29
#2Markus Tuller (UA: University of Arizona)H-Index: 29
Last. Scott B. Jones (USU: Utah State University)H-Index: 34
view all 7 authors...
Abstract The accurate determination of land surface water fluxes at various spatiotemporal scales remains a challenge in hydrological sciences. It is intuitive that land surface net water flux (i.e., infiltration minus evapotranspiration) directly affects near-surface soil moisture. However, there exists no hydrological model suitable to calculate net water flux based on measured near-surface soil moisture data. This is a consequence of the mathematical structure of existing models that use ‘bou...
8 CitationsSource
#1Eduardo Bautista (ARS: Agricultural Research Service)H-Index: 13
#2Arthur W. Warrick (UA: University of Arizona)H-Index: 29
Last. Douglas J. Hunsaker (ARS: Agricultural Research Service)H-Index: 35
view all 5 authors...
AbstractA methodology is proposed for estimating furrow infiltration under time-variable ponding depth. The methodology approximates the solution to the two-dimensional Richards equation, and is a modification of a procedure that was originally proposed for computing infiltration under constant ponding depth. Two computational approaches were developed and tested using several combinations of soil hydraulic properties, furrow geometry, and flow depth variations. Both methods yielded solutions of...
9 CitationsSource
#1D. Zerihun (UA: University of Arizona)H-Index: 7
#2Charles A. Sanchez (UA: University of Arizona)H-Index: 24
Last. Arthur W. Warrick (UA: University of Arizona)H-Index: 29
view all 3 authors...
AbstractDroplet dynamics simulations are key to predicting sprinkler irrigation precipitation patterns. This paper includes derivations of equations describing droplet motion through a steady, uniform horizontal airflow (wind). The assumptions on which sprinkler irrigation droplet dynamics is based are stated, and the limitations they entail are highlighted. The motion of droplets is treated as an impulsively started accelerated motion of rigid spheres, originating at the sprinkler nozzle with k...
4 CitationsSource
#1Morteza Sadeghi (USU: Utah State University)H-Index: 29
#2Bijan Ghahraman (FUM: Ferdowsi University of Mashhad)H-Index: 15
Last. Scott B. Jones (USU: Utah State University)H-Index: 34
view all 5 authors...
6 CitationsSource
#1D. Zerihun (UA: University of Arizona)H-Index: 7
#2Charles A. Sanchez (UA: University of Arizona)H-Index: 24
Last. Arthur W. Warrick (UA: University of Arizona)H-Index: 29
view all 3 authors...
AbstractA system of equations, with strong physical basis, was derived for sprinkler irrigation droplet dynamics in the companion paper. Numerical solution of these equations and model evaluation is discussed in this paper. With the aim of enhancing computational efficiency and robustness, the droplet dynamics equations were scaled using four characteristic variables: characteristic time, length, velocity, and density. The characteristic time, length, and velocity are derived based on considerat...
1 CitationsSource
#1Eduardo Bautista (USDA: United States Department of Agriculture)H-Index: 13
#2Arthur W. Warrick (UA: University of Arizona)H-Index: 29
Source
#1Eduardo Bautista (USDA: United States Department of Agriculture)H-Index: 13
#2Arthur W. Warrick (UA: University of Arizona)H-Index: 29
Last. Theodor Strelkoff (USDA: United States Department of Agriculture)H-Index: 22
view all 3 authors...
AbstractThis study expands the analysis of a proposed furrow infiltration formulation based on an approximate solution to the two-dimensional Richards equation. The approach calculates two-dimensional infiltration flux as the sum of one-dimensional infiltration and a second term labeled the edge effect. The edge effect varies linearly with time when the applied water pressure is constant. It is a function of sorptivity, soil water content, and the empirical parameters γ and W* that require calib...
14 CitationsSource
This paper presents an internally coupled flow and solute transport model for free-draining irrigation furrows. Furrow hydraulics is simulated with a numerical zero-inertia model and solute transport is computed with a numerical cross-section averaged advection-dispersion model. A procedure for integrating the furrow volumetric cumulative intake integral in the context of a hydraulic model is presented. Two hydraulic and solute transport data sets collected in sloping free-draining test furrows ...
6 CitationsSource
#1Eduardo BautistaH-Index: 13
#2Arthur W. WarrickH-Index: 29
Last. J. L. SchlegelH-Index: 2
view all 3 authors...
2 CitationsSource
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