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United States Department of Agriculture

Agricultural Research Service

Related Topics

Robert H Erskine (Rob)
Water Management Systems Research
Physical Scientist

Phone: (970) 492-7743
Fax: (970) 492-7310

2150 CENTER AVENUE
2150 CENTRE AVE., BLDG. D, STE. 200
FORT COLLINS , CO 80526


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Scale issues in soil hydrology related to measurement and simulation: A case study in Colorado -
Green, T.R., Erskine, R.H., Sherrod, L.A., Kipka, H., Ascough II, J.C., Mcmaster, G.S. 2016. Scale issues in soil hydrology related to measurement and simulation: A case study in Colorado. Soil Science Society of America Journal. https://scisoc.confex.com/scisoc/2016am/webprogram/Paper102062.html.
Modeling winter wheat phenological responses to water deficits in the Unified Plant Growth Model (UPGM) component of the spatially distributed Agricultural Ecosystem Services (AgES) model -
The AgroEcoSystem (AgES) response-function model simulates layered soil water dynamics in semi-arid Colorado: sensitivity and calibration -
Green, T.R., Erskine, R.H., Coleman, M.L., David, O., Ascough Ii, J.C., Kipka, H. 2015. The AgroEcoSystem (AgES) response-function model simulates layered soil water dynamics in semi-arid Colorado: sensitivity and calibration. Vadose Zone Journal. doi:10.2136/vzj2014.09.0119.
Spatial patterns and cross-correlations of temporal changes in soil carbonates and surface elevation in a winter wheat-fallow cropping system -
Sherrod, L.A., Erskine, R.H., Green, T.R. 2014. Spatial patterns and cross-correlations of temporal changes in soil carbonates and surface elevation in a winter wheat-fallow cropping system. Soil Science Society of America Journal. doi:10.2136/sssaj2014.05.0222.
AgroEcoSystem-Watershed (AgES-W) model delineation and scaling -
Green, T.R., Erskine, R.H., Ascough II, J.C., Vandenberg, B.C., Pfennig, B., Kipka, H., David, O., Coleman, M. 2014. AgroEcoSystem-Watershed (AgES-W) model delineation and scaling. Environmental Modeling International Conference Proceedings. Available: http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_389.pdf.
Linking a modified EPIC-based growth model (UPGM) with a component-based watershed model (AGES-W) -
McMaster, G.S., Ascough II, J.C., Edmunds, D.A., David, O., Wagner, L.E., Fox, F.A., Erskine, R.H., Kipka, H., Green, T.R. 2014. Linking a modified EPIC-based growth model (UPGM) with a component-based watershed model (AGES-W). Environmental Modeling International Conference. June 15-19. 2014, San Diego, California.
Spatial interrelationships between wheat phenology, thermal time, and terrain attributes -
Mcmaster, G.S., Green, T.R., Erskine, R.H., Edmunds, D.A., Ascough II, J.C. 2012. Spatial interrelationships between wheat phenology, thermal time, and terrain attributes. Agronomy Journal. 104(4):1110-1121.
Measurement and inference of profile soil-water dynamics at different hillslope positions in a semi-arid agricultural watershed -
Green, T.R., Erskine, R.H. 2011. Measurement and inference of profile soil-water dynamics at different hillslope positions in a semi-arid agricultural watershed. Water Resources Research. VOL.47, W00H15, 15 p.
Spatial analyses of soil properties, terrain, and water dynamics in a semi-arid agricultural landscape -
Green, T.R., Erskine, R.H., Murphy, M.R., Ahuja, L.R. 2011. Spatial analyses of soil properties, terrain, and water dynamics in a semi-arid agricultural landscape. American Society of Agronomy Abstracts. Paper No. 63950.
Measurement of surface energy balance components in dryland wheat/fallow and limited-irrigation corn -
Green, T.R., Saseendran, S.A., Erskine, R.H., Ahuja, L.R., Murphy, M.R., Ma, L., Bausch, W.C., Andales, A.A. 2011. Measurement of surface energy balance components in dryland wheat/fallow and limited-irrigation corn. Annual American Geophysical Union Hydrology Days. Paper No. 11.
Optimizing Soil Hydraulic Parameters in RZWQM2 Under Fallow Conditions -
Fang, Q.X., Green, T.R., Ma, L., Malone, R.W., Erskine, R.H., Ahuja, L.R. 2010. Optimizing Soil Hydraulic Parameters in RZWQM2 Under Fallow Conditions. Soil Science Society of America Journal. 74(6):1897-1913. DOI:10.2136/sssaj2009.0380.
Revisiting soil terrain relationships at a long-term agroecosystem study site -
Erskine, R.H., Green, T.R., Sherrod, L.A., Peterson, G.A. 2010. Revisiting soil terrain relationships at a long-term agroecosystem study site. Annual American Geophysical Union Hydrology Days. Available: http://hydrologydays.colostate.edu/Abstracts_10/Erskine_abs.pdf.
Space-Time Dynamics of Soil Water and Process Interactions in Semi-Arid Terrain, Colorado, USA Reprint Icon -
Green, T.R., Erskine, R.H., Murphy, M.R., Ma, L., Ascough II, J.C., Mcmaster, G.S., Dunn, G.H., Ahuja, L.R. 2009. Space-Time Dynamics of Soil Water and Process Interactions in Semi-Arid Terrain, Colorado, USA. International Congress on Modeling and Simulation Proceedings. p. 1851-1857.
Modeling with Limited Data: The Influence of Crop Rotation and Management on Weed Communities and Crop Yield Loss -
Stephen R. Canner, L. J. Wiles, Robert H. Erskine, Gregory S. McMaster, Gale H. Dunn, and James C. Ascough, II*: Modeling with Limited Data: The Influence of Crop Rotation and Management on Weed Communities and Crop Yield Loss: Weed Science 2009 57:175–186
Fractal Analyses of Steady Infiltration and Terrain on an Undulating Agricultural Field -
Green, T.R., Dunn, G.H., Erskine, R.H., Salas, J.D., Ahuja, L.R. 2009. Fractal Analyses of Steady Infiltration and Terrain on an Undulating Agricultural Field. Vadose Zone Journal. 8(2)310-320.
Spatial Features, Scaling and Simulation in Semi-Arid Agricultural Terrain Reprint Icon -
Green, T.R., Erskine, R.H., Ma, L. 2008. Spatial Features, Scaling and Simulation in Semi-Arid Agricultural Terrain. American Society of Agronomy Meetings. Paper No. 257-9.
Scaling Terrain Attributes By Fractal Methods -
Erskine, R.H., Green, T.R., Niemann, J.D., Ramirez, J.A. 2008. Scaling Terrain Attributes By Fractal Methods. Annual American Geophysical Union Hydrology Days.
Relating Crop Yield Patterns to Terrain Attributes Under Water-Limited and Waterlogged Conditions -
Erskine, R.H., Green, T.R., Starr, G.C. 2008. Relating Crop Yield Patterns to Terrain Attributes Under Water-Limited and Waterlogged Conditions. International Conference on Precision Agriculture Abstracts & Proceedings.
Spatial Variability in Wheat Phenology Across a Landscape -
Mcmaster, G.S., Green, T.R., Erskine, R.H., Edmunds, D.A. 2007. Spatial Variability in Wheat Phenology Across a Landscape. American Geophysical Union.
Spatial Variability and Scaling of Infiltration on Undulating Agricultural Terrain Reprint Icon -
Green, T.R., Ahuja, L.R., Dunn, G.H., Ascough Ii, J.C., Mcmaster, G.S., Ma, L., Erskine, R.H., Salas, J.D., Palic, D.B., Murphy, M.R. 2007. Spatial Variability and Scaling of Infiltration on Undulating Agricultural Terrain. American Society of Agronomy Meetings New Orleans, November 7,2007 (282-3).
DIGITAL ELEVATION ACCURACY AND GRID CELL SIZE: EFFECTS ON ESTIMATED TERRAIN ATTRIBUTES -
Erskine, R.H., Green, T.R., Ramirez, J.A., Macdonald, L.H. 2007. Digital elevation accuracy and grid cell size: effects on estimated terrain attributes. Soil Science Society of America Journal. Vol 71: No4, July-August 2007, pp1371-1380; doi:10.2136/ssaj2005.0142.
Assessing Modeled Spatial and Temporal Variability in Soil Moisture Using Automated, Multi-Objective, Step-wise Calibration -
Strudley, M.W., Green, T.R., Erskine, R.H., David, O., Umemoto, M. 2007. Assessing Modeled Spatial and Temporal Variability in Soil Moisture Using Automated, Multi-Objective, Step-wise Calibration. Annual Hydrology Days Conference Proceedings.
RELATING CROP YIELD TO TOPOGRAPHIC ATTRIBUTES USING SPATIAL ANALYSIS NEURAL NETWORKS AND REGRESSION -
Green, T.R., Salas, J., Martinez, A., Erskine, R.H. 2007. Relating crop yield to topographic attributes using spatial analysis neural networks and regression . Geoderma.
TEMPORALLY STABLE PATTERNS IN GRAIN YIELD AND SOIL WATER ON A DRYLAND CATENA -
Andales, A.A., Green, T.R., Ahuja, L.R., Erskine, R.H., Peterson, G.A. 2007. Temporally stable patterns in grain yield and soil water on a dryland catena. Agricultural Systems 94 (2007) 119-127).
COMPARISON OF GRID-BASED ALGORITHMS FOR COMPUTING UPSLOPE CONTRIBUTING AREA -
Erskine, R.H., Green, T.R., Ramirez, J.A., Macdonald, L.H. Comparison of grid-based algorithms for computing upslope contributing area. Water Resources Research. Vol. 42, W09416, doi:10.1029/2005WR004648, 2006.
MODELING SPATIAL-TEMPORAL SOIL WATER AND OVERLAND FLOW IN A DRYLAND WHEAT-FALLOW FIELD USING MARIA-GIS -
Green, T.R., Ascough II, J.C., Erskine, R.H., Vandenberg, B.C., Ahuja, L.R. 2006. Modeling spatial-temporal soil water and overland flow in a dryland wheat-fallow field using maria-gis. World Congress of Soil Science. Philadelphia, PA. 7/9-7/15/2006
MODEL PARAMETERS FOR AGRICULTURAL SYSTEMS WITH NONLINEAR PROCESS INTERATIONS AND SPATIAL VARIABILITY -
Green, T.R., Ahuja, L.R., Ascough II, J.C., Ma, L., Erskine, R.H., McMaster, G.S. 2004. Model parameters for agricultural systems with nonlinear process interations and spatial variability. Agronomy Abstracts a04-5627. (CD-ROM). 2004.
MODEL PARAMETERIZATION AT DIFFERENT SCALES: HOW DO WE ESTIMATE AND INCORPORATE SPATIAL INFORMATION? -
Green, T.R., Ascough Ii, J.C., Ahuja, L.R., Ma, L., Erskine, R.H. 2004. Model parameterization at different scales: how do we estimate and incorporate spatial information?. Intl. Workshop on Applications, Enhancements and Collaboration of ARS RZWQM and GPFARM Models, April 20-22, 2004, Fort Collins, CO.
ANALYSIS OF DEM ACCURACY, GRID CELL SIZE, AND ALTERNATIVE FLOW ROUTING ALGORITHMS FOR ESTIMATING TOPOGRAPHIC ATTRIBUTES -
Erskine, R.H., Green, T.R., Ramirez, J.A., Macdonald, L.H. 2004. Analysis of dem accuracy, grid cell size, and alternative flow routing algorithms for estimating topographic attributes. Annual Hydrology Days Conference Proceedings. Fort Collins, CO. March 10-12, 2004.
TERRAIN-BASED SCALING AND SIMULATION OF CROPPING SYSTEMS -
Green, T.R., Erskine, R.H., Ascough Ii, J.C., Ahuja, L.R., Salas, J.D., Martinez, A. 2003. Terrain-based scaling and simulation of cropping systems. Meeting Proceedings. Integrative Modelling of Sustanable Land Use, ETH Zurich, Nov 24-25, 2003.
SPATIAL AND TEMPORAL CORRELATIONS AMONG DRYLAND GRAIN YEILD AND SOIL-WATER CONTENT IN A SLOPING FIELD -
Andales, A.A., Ahuja, L.R., Green, T.R., Erskine, R.H., Peterson, G. 2003. Spatial and temporal correlations among dryland grain yeild and soil-water content in a sloping field. Agronomy Abstracts. Amer. Soc. of Agronomy, Denver, CO. Nov. 2-6, 2003.
ISSUES IN TERRAIN ANALYSES: DIGITAL ELEVATION MODEL GENERATION AND PROCESSING TOOLS -
Erskine, R.H., Green, T.R., Ramirez, J.A. 2003. Issues in terrain analyses: digital elevation model generation and processing tools. Meeting Proceedings. 2003 American Society of Agronomy/Crop Sci Society of Amer/Soil Science Soiciety of Amer Annual Meeting. Nov. 2-6, 2003. S05-erskine528369-poster (CD-ROM).
MEASUREMENT, SCALING, AND TOPOGRAPHIC ANALYSES OF SPATIAL CROP YIELD AND SOIL WATER CONTENT -
Green, T.R., Erskine, R.H. 2004. Measurement, scaling, and topographic analyses of spatial crop yield and soil water content. Hydrological Processes. June 2004. Volume 18, Issue 8, pages 1447-1465.
TOPOGRAPHIC ANALYSIS, SCALING AND MODELS TO EVALUATE SPATIAL/TEMPORAL VARIABILITY OF LANDSCAPE PROCESSES AND MANAGEMENT -
Ahuja, L.R., Green, T.R., Erskine, R.H., Ma, L., Ascough Ii, J.C., Dunn, G.H., Shaffer, M.J., Martinez, A. 2002. Topographic analysis, scaling and models to evaluate spatial/temporal variability of landscape processes and management. CRC Book: Agricultural Sys Models in Field Research and Technology Transfer. April 2002. Chapter 13, pp 265-272.
SPATIAL CROP YIELD AND SOIL WATER CONTENT: MEASUREMENT, SCALING AND TOPOGRAPHIC ANALYSES -
Green, T.R., Erskine, R.H., Martinez, A., Murphy, M.R., Ahuja, L.R., Salas, J.D., Ramirez, J.A. 2001. Spatial crop yield and soil water content: measurement, scaling and topographic analyses. International Congress on Modeling and Simulation Proceedings. December 10, 2001.
GPS/GIS METHODS FOR COLLECTING AND ANALYZING GRAIN AND FORAGE YIELD DATA -
Erskine, R.H., Green, T.R., Dunn, G.H. 2001. Gps/gis methods for collecting and analyzing grain and forage yield data. ESRI Conference Proceedings. October 2001.
IDENTIFYING OPPORTUNITIES FOR INVESTIGATING THE EFFECTS OF TEMPERATURE ON INFILTRATION AND IMPLICATIONS FOR MODELING THE HYDROLOGIC RESPONSE OF WATERSHEDS -
TILLAGE AND RESIDUE. II. EFFECTS ON SOIL WATER IN DRYLAND WHEAT-FALLOW SYSTEMS -
TILLAGE AND RESIDUE. I. EFFECTS ON SURFACE SOIL TEMPERATURE IN DRYLAND WHEAT-FALLOW SYSTEMS -
Last Modified: 5/2/2016
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