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Robert H Erskine (Rob)
Water Management and Systems Research
Hydrologist

Phone: (970) 492-7743
Fax: (970) 492-7408

(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Characterizing ecologically relevant topoclimates across a small prairie watershed - (Abstract Only)
Spatial soil moisture regimes measured over two decades in a dryland field show effects of conversion from wheat-fallow to perennial vegetation - (Abstract Only)
Understanding soil moisture regimes through analysis of long-term, spatially distributed data within a farm field: Implications for scaling and inference of hydrological fluxes - (Abstract Only)
Advances in the science and technology of simulating water, nutrient, soil and plant interactions and dynamics in space and time - (Abstract Only)
Enhanced hydrologic simulation may not improve downscaled soil moisture patterns without improved soil characterization Reprint Icon - (Peer Reviewed Journal)
Pauly, M.J., Niemann, J.D., Scalia, J., Green, T.R., Erskine, R.H., Jones, A.S., Grazaitis, P.J. 2020. Enhanced hydrologic simulation may not improve downscaled soil moisture patterns without improved soil characterization. Soil Science Society of America Journal. https://doi.org/10.1002/saj2.20052.
Would it help? Distributed Measurements in a Small Agricultural Catchment Support Spatial Complexity of Soil Hydrologic Modeling - (Abstract Only)
Green, T.R., Erskine, R.H., Kipka, H., Lighthart, N.P., Nezat, C.J., Edmunds, D.A., David, O., Barnard, D., Douglas-Mankin, K.R. 2019. Would it help? Distributed Measurements in a Small Agricultural Catchment Support Spatial Complexity of Soil Hydrologic Modeling. ASA-CSSA-SSSA Annual Meeting Abstracts.
Integration of distributed measurements and simulations to explore spatial complexity in a field-scale agricultural watershed. - (Abstract Only)
Green, T.R., Erskine, R.H., Kipka, H., Lighthart, N., Edmunds, D.A., Mcmaster, G.S., David, O., Cruz, P.P., Figueiredo, R.O. 2020. Integration of distributed measurements and simulations to explore spatial complexity in a field-scale agricultural watershed. ASA-CSSA-SSSA Annual Meeting Abstracts.
Winter wheat phenology simulations improve when adding responses to water stress Reprint Icon - (Peer Reviewed Journal)
McMaster, G.S., Edmunds, D.A., Marquez, R., Haley, S.D., Buchleiter, G.W., Bryne, P.F., Green, T.R., Erskine, R.H., Lighthart, N.P., Kipka, H., Fox, F.A., Wagner, L.E., Tatarko, J., Maragues, M., Ascough II, J.C. 2019. Winter wheat phenology simulations improve when adding responses to water stress. Agronomy Journal. 3:1-11. https://doi.org/10.2134/agronj2018.09.0615.
A model for the AgES (Agricultural Ecosystems Services): Concepts of simplicity versus complexity in representing spatially explicit soil-water-plant processes - (Abstract Only)
Green, T.R., Mcmaster, G.S., Kipka, H., Lighthart, N., David, O., Erskine, R.H., Edmunds, D.A., Figueiredo, R.O., Cruz, P.P., Carlson, J., Arabi, M., Ascough Ii, J.C. 2018. A model for the AgES (Agricultural Ecosystems Services): Concepts of simplicity versus complexity in representing spatially explicit soil-water-plant processes. Meeting Proceedings. https://dl.sceincesocieties.org/publications/meetings/2017am/16913/105306.
Rainfall variability on a small watershed: Implications for hydrologic modelling - (Abstract Only)
Erskine, R.H., Green, T.R., Kipka, H., Lighthart, N.P., Ramirez, J.A. 2018. Rainfall variability on a small watershed: Implications for hydrologic modelling. Meeting Proceedings. 115.
The Agricultural Ecosystems Services (AgES) watershed model is used to estimate the spatial complexity of soil hydraulic properties in a field-scale agricultural watershed, Colorado, USA - (Abstract Only)
Green, T.R., Erskine, R.H., David, O., Kipka, H., Lighthart, N., Mcmaster, G.S., Cruz, P., Figueiredo, R.O. 2018. The Agricultural Ecosystems Services (AgES) watershed model is used to estimate the spatial complexity of soil hydraulic properties in a field-scale agricultural watershed, Colorado, USA. Meeting Proceedings. 12-17 p.246-247.
Unified Plant Growth Model (UPGM). 1. Background, objectives, and vision. - (Proceedings)
Mcmaster, G.S., Edmunds, D.A., Marquez, R.D., Fox, F.A., Wagner, L.E., Tatarko, J., Lighthart, N., Kipka, H., Erskine, R.H., Green, T.R., Ascough Ii, J.C. 2018. Unified Plant Growth Model (UPGM). 1. Background, objectives, and vision.. Meeting Proceedings. 9th International Congress on Environmental Modelling and Software.
Soil moisture dynamics in a Colorado field: Stability and threshold crossing times under annual crops and perennial vegetation - (Abstract Only)
Green, T.R., Erskine, R.H., Rao, S.C., Niemann, J.D., Kampf, S., Ramirez, J.A. 2018. Soil moisture dynamics in a Colorado field: Stability and threshold crossing times under annual crops and perennial vegetation. Annual American Geophysical Union Hydrology Days. HTTP://HYDROLOGYDAYS.COLOSTATE.EDU.
Surface runoff threshold responses to rainfall intensity, scale, and land use type, change and disturbance - (Abstract Only)
Measuring and mapping patterns of soil erosion and deposition related to soil carbonate concentrations under agricultural management Reprint Icon - (Peer Reviewed Journal)
Erskine, R.H., Sherrod, L.A., Green, T.R. 2017. Measuring and mapping patterns of soil erosion and deposition related to soil carbonate concentrations under agricultural management. Journal of Visualized Experiments. 10.3791/56064.
Scale issues in soil hydrology related to measurement and simulation: A case study in Colorado - (Abstract Only)
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 - (Abstract Only)
The AgroEcoSystem (AgES) response-function model simulates layered soil water dynamics in semi-arid Colorado: sensitivity and calibration - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Proceedings)
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) - (Proceedings)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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 in RZWQM2 under fallow conditions - (Peer Reviewed Journal)
Fang, Q.X., Green, T.R., Ma, L., Malone, R.W., Erskine, R.H., Ahuja, L.R. 2010. Optimizing soil hydraulic parameters in 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 - (Abstract Only)
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 - (Proceedings)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Peer Reviewed Journal)
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 - (Abstract Only)
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 - (Abstract Only)
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? - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Abstract Only)
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 - (Peer Reviewed Journal)
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 - (Book / Chapter)
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 - (Proceedings)
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 - (Proceedings)
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 - (Proceedings)
TILLAGE AND RESIDUE. II. EFFECTS ON SOIL WATER IN DRYLAND WHEAT-FALLOW SYSTEMS - (Abstract Only)
TILLAGE AND RESIDUE. I. EFFECTS ON SURFACE SOIL TEMPERATURE IN DRYLAND WHEAT-FALLOW SYSTEMS - (Abstract Only)