Page Banner

United States Department of Agriculture

Agricultural Research Service

Related Topics

Timothy R Green
Agricultural Systems Research Unit
Agricultural Engineer

Phone: (970) 492-7335
Fax: (970) 492-7310
Room 2035
USDA-ARS-NPA-ASRU
2150 CENTRE AVE., BLDG D., STE. 200
FORT COLLINS, CO, 80526

Projects
Spatial Modeling of Agricultural Watersheds: Water and Nutrient Management and Targeted Conservation Effects at Field to Watershed Scales
Appropriated (D)
  Accession Number: 422726
Enhanced System Models and Decision Support Tools to Optimize Water Limited Agriculture
Appropriated (D)
  Accession Number: 425704
NRCS Hydrology Tool
Interagency Reimbursable Agreement (I)
  Accession Number: 425472
SPATIAL DATA AND IMPLEMENTATION TOOLS FOR DISTRIBUTED WATERSHED MODELING ADDRESSING NRCS RESOURCE CONCERNS
Reimbursable (R)
  Accession Number: 422199
SPATIAL DATA AND IMPLEMENTATION TOOLS FOR DISTRIBUTED WATERSHED MODELING ADDRESSING NRCS RESOURCE CONCERNS
Specific Cooperative Agreement (S)
  Accession Number: 422200
ENHANCED SYSTEM MODELS, MANAGEMENT AND CULTIVAR ADAPTATIONS TO LIMITED WATER AND CLIMATE CHANGE, AND TOOLS FOR PRECISION MANAGEMENT
Specific Cooperative Agreement (S)
  Accession Number: 423436
NRCS Hydrology Tool
Specific Cooperative Agreement (S)
  Accession Number: 424800
Improve and Enhance the Object Modeling System (OMS) for Building New Models and Conservation Tools and Transferring This Technology
Specific Cooperative Agreement (S)
  Accession Number: 425201

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
The drought calculator: decision support tool for predicting forage growth during drought - (Peer Reviewed Journal)
Dunn, G.H., Gutwein, M., Green, T.R., Menger, A.L., Printz, J.L. 2013. The drought calculator: decision support tool for predicting forage growth during drought. Rangeland Ecology and Management. 66(5): 570-578.
Ground water and climate change - (Review Article)
Taylor, R., Scanlon, B., Doll, P., Rodell, M., Van Beek, R., Wada, Y., Longuevergne, L., Leblanc, M., Famiglietti, J.S., Edmunds, M., Konikow, L., Green, T.R., Chen, J., Taniguchi, M., Bierkens, M., Macdonald, A., Fan, Y., Maxwell, R., Yechieli, Y., Gurdak, J., Allen, D., Shamsudduha, M., Hiscock, K., Yeh, P., Holman, I., Holger, T. 2013. Ground water and climate change. Nature Climate Change. 3(4): 322-329.
Introduction to hydrology - (Book / Chapter)
Salas, J.D., Govindaraju, R., Anderson, M., Arabi, M., Frances, F., Suarez, W., Lavado, W., Green, T.R. 2014. Introduction to hydrology. In: Modern Water Resources Engineering, Wang, L.K. and Yang, R.S.H. (Eds), Handbook of Envronmental Engineering, Vol. 15:1-126. 805 pp.
Domain specific languages for modeling and simulation: use case OMS3 - (Proceedings)
David, O., Lloyd, W., Ascough II, J.C., Green, T.R., Olson, K., Leavesley, G.H., Carlson, J.R. 2012. Domain specific languages for modeling and simulation: use case OMS3. In: Seppelt, R., Voinov, A.A., Lange, S., and Bankamp, D., editors. Proceedings of the Sixth Biennial Meeting of the International Environmental Modelling and Software Society, Managing Resources of a Limited Planet: Pathways and Visions under Uncertainty, July 1-5, 2012, Leipzig, Germany. p. 1201-1207.
The cloud services innovation platform- enabling service-based environmental modelling using infrastructure-as-a-service cloud computing - (Proceedings)
Lloyd, W., David, O., Lyon, J., Rojas, K.W., Ascough II, J.C., Green, T.R., Carlson, J.R. 2012. The cloud services innovation platform- enabling service-based environmental modelling using infrastructure-as-a-service cloud computing. In: Seppelt, R., Voinov, A.A., Lange, S., and Bankamp, D., editors, Proceedings of the Sixth Biennial Meeting of the International Environmental Modelling and Software Society, Managing Resources of a Limited Planet: Pathways and Visions under Uncertaintly, July 1-5, 2012, Leipzig, Germany. p.1208-1215.
ArgoEcoSystem-watershed (AgES-W) model evaluation for streamflow and nitrogen/sediment dynamics on a midwest agricultural watershed - (Proceedings)
Ascough II, J.C., David, O., Smith, D.R., Kipka, H., Fink, M., Green, T.R., Krause, P., Mcmaster, G.S., Kralisch, S., Ahuja, L.R. 2012. ArgoEcoSystem-watershed (AgES-W) model evaluation for streamflow and nitrogen/sediment dynamics on a midwest agricultural watershed. In: Seppelt, R., Voinov, A.A., Lange, S., and Bankamp, D. editors,Proceedings of the Sixth Biennial Meetinf or the International Environmental Modeling and Software Society, Managing Resources of a Limited Planet: Pathways and Visions Under Uncertainty, July 1-5, 2012, Leipzig, Germany. p. 2179-2186.
A software engineering perspective on environmental modeling framework design: The object modeling system - (Peer Reviewed Journal)
David, O., Ascough II, J.C., Lloyd, W., Green, T.R., Rojas, K.W., Leavesley, G.H., Ahuja, L.R. 2012. A software engineering perspective on environmental modeling framework design: The object modeling system. Journal of Environmental Modeling and Software. 39 (2013):201-213.
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.
Assessment of agricultural return flows under changing climate and crop water management - (Abstract Only)
Green, T.R., Ma, L., Anapalli, S., Ahuja, L.R., Trout, T.J. 2012. Assessment of agricultural return flows under changing climate and crop water management. Proceedings Solutions International Association of Hydrogeologists. Niagara Falls, Ontario, Canada, September 16-21.
Soil moisture sensing via swept frequency based microwave sensors - (Peer Reviewed Journal)
Pelletier, M.G., Karthikeyan, S., Green, T.R., Schwartz, R.C., Wanjura, J.D., Holt, G.A. 2012. Soil moisture sensing via swept frequency based microwave sensors. Sensors. 12(1):753-767.
A protocol for parameterization and calibration of RZWQM2 in field research - (Book / Chapter)
Ma, L., Ahuja, L.R., Saseendran, S.A., Malone, R.W., Green, T.R., Nolan, B.T., Bartling, P.N., Flerchinger, G.N., Boote, K.J., Hoogenboom, G. 2011. A protocol for parameterization and calibration of RZWQM2 in field research. Soil Science Society of America Special Publication Book Chapter. p.1-64.
Modeling the effects of controlled drainage, N rate and weather on nitrate loss to subsurface drainage - (Peer Reviewed Journal)
Fang, Q.X., Malone, R.W., Ma, L., Jaynes, D.B., Thorp, K.R., Green, T.R., Ahuja, L.R. 2012. Modeling the effects of controlled drainage, N rate and weather on nitrate loss to subsurface drainage. Agricultural Water Management. 103:150-161.
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.
Climate change impacts on dryland cropping systems in the central Great Plains, USA - (Peer Reviewed Journal)
Ko, J., Ahuja, L.R., Anapalli, S., Green, T.R., Ma, L., Nielsen, D.C., Walthall, C.L. 2011. Climate change impacts on dryland cropping systems in the central Great Plains, USA. Climatic Change. 111:445-472.
Beneath the surface of global change: Impacts of climate change on groundwater - (Peer Reviewed Journal)
Green, T.R., Taniguchi, M., Kooi, H., Gurdak, J., Allen, D., Hiscock, K., Treidel, H., Aureli, A. 2011. Beneath the surface of global change: Impacts of climate change on groundwater. Journal of Hydrology. 405 (3-4):532-560.
Environmental modeling framework invasiveness: analysis and implications - (Peer Reviewed Journal)
Lloyd, W., David, O., Ascough II, J.C., Rojas, K.W., Carlson, J., Leavesley, G.H., Krause, P., Green, T.R., Ahuja, L.R. 2011. Environmental modeling framework invasiveness: analysis and implications. Environmental Modeling & Software. 26(10):1240-1250.
Analysis of coaxial soil cell in reflection and transmission - (Peer Reviewed Journal)
Pelletier, M.G., Schwartz, R.C., Evett, S.R., McMichael, B.L., Lascano, R.J., Gitz, D.C. 2011. Analysis of coaxial soil cell in reflection and transmission. Sensors. 11:2592-2610.
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.
Fringe capacitance correction for a coaxial soil cell - (Peer Reviewed Journal)
Pelletier, M.G., Viera, J., Schwartz, R.C., Lascano, R.J., Evett, S.R., Green, T.R., Wanjura, J.D., Holt, G.A. 2011. Fringe capacitance correction for a coaxial soil cell. Sensors. 11(1):757-770.
Spatially-distributed stream flow and nutrient dynamics simulations using the component-based AgroEcoSystem-Watershed (AgES-W)Model - (Abstract Only)
Ascough II, J.C., David, O., Heathman, G.C., Smith, D.R., Green, T.R., Krause, P., Kipka, H., Fink, M. 2010. Spatially-distributed stream flow and nutrient dynamics simulations using the component-based AgroEcoSystem-Watershed (AgES-W)Model. American Geophysical Union. Fall Meeting, December 13-17, 2010, San Francisco, California. Paper No. H43F-1329.
Comparison of electrical and thermal conductivities for soils from five states - (Peer Reviewed Journal)
Logsdon, S.D., Green, T.R., Bonta, J.V., Seyfried, M.S., Evett, S.R. 2010. Comparison of electrical and thermal conductivities for soils from five states. Soil Science. 175(6):573-578.
Scaling soil hydraulic properties: concepts and a research example - (Abstract Only) - (02-Sep-10)
Simulation of free air CO2 enriched wheat growth and interaction with water, nitrogen, and temperature - (Peer Reviewed Journal)
Ko, J., Ahuja, L.R., Kimball, B.A., Anapalli, S., Ma, L., Green, T.R., Ruane, A., Wall, G.W., Pinter Jr, P.J., Bader, D. 2010. Simulation of free air CO2 enriched wheat growth and interaction with water, nitrogen, and temperature. Agricultural and Forest Meteorology. 150:1331-1346.
Effective soil hydraulic properties in space and time: some field data analysis and modeling concepts - (Abstract Only)
Green, T.R., Ahuja, L.R., Ma, L., Ascough II, J.C., Dunn, G.H. Effective Soil Hydraulic Properties in Space and Time: Some Field Data Analysis and Modeling Concepts. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. Paper No. 61385.
Optimizing Soil Hydraulic Parameters in RZWQM2 Under Fallow Conditions - (Peer Reviewed Journal) - (26-May-10)
Environmental modeling framework invasiveness: analysis and implications - (Proceedings)
Lloyd, W., David, O., Ascough II, J.C., Rojas, K.W., Carlson, J.R., Leavesley, G.H., Krause, P., Green, T.R., Ahuja, L.R. 2010. Environmental modeling framework invasiveness: analysis and implications. In: Swayne, D.A., Yang, W.,Voinov, A.A., Rizzoli, A., and Fillatova, T. editors. Environmental Modeling International Conference Proceedings. International Modeling and Software Society, Modelling for Environment's Sake, July 5-8, 2010, Ottawa, Canada, p. 1073-1080.
Crop Water Use Efficiency at Multiple Scales - (Peer Reviewed Journal)
Green, T.R., Yu, Q., Ma, L., Wang, T. 2010. Crop Water Use Efficiency at Multiple Scales. Agricultural Water Management. 97(8):1099-1101. Available: http://dx.doi.org/10.1016/j.agwat.2010.03.018.
Estimating effective soil properties of heterogeneous areas for modeling infiltration and redistribution - (Peer Reviewed Journal)
Ahuja, L.R., Ma, L., Green, T.R. 2010. Estimating effective soil properties of heterogeneous areas for modeling infiltration and redistribution. Soil Science Society of America Journal. 74(5):1469-1482.
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.
Water Resources and Agricultural Water Use in the North China Plain: Current Status and Management Options - (Peer Reviewed Journal)
Fang, Q., Ma, L., Green, T.R., Yu, Q., Wang, T.D., Ahuja, L.R. 2010. Water Resources and Agricultural Water Use in the North China Plain: Current Status and Management Options. Agricultural Water Management. 97(8):1102-1116. Available: doi:10.1016/j.agwat.2010.01.008.
Hydra Probe and Twelve-wire Probe Comparisons in Fluids and Soil Cores - (Peer Reviewed Journal)
Logsdon, S.D., Green, T.R., Seyfried, M.S., Evett, S.R., Bonta, J.V. 2010. Hydra Probe and Twelve-wire Probe Comparisons in Fluids and Soil Cores. Soil Science Society of America Journal. 74:5-12.
A step by step procedure for parameterization, calibration, validation, and application of a system model in field research - (Abstract Only)
Ma, L., Ahuja, L.R., Malone, R.W., Green, T.R. A Step by Step Procedure for Parameterization, Calibration, Validation, and Application of a System Model in Field Research. ASA-CSSA-SSSA Annual Meeting Abstracts.
Economic Risk Analysis of Agricultural Tillage Systems Using the SMART Stochastic Efficiency Software Package Reprint Icon - (Proceedings)
Ascough II, J.C., Fathelrahman, E.M., Vandenberg, B.C., Green, T.R., Hoag, D.L. 2009. Economic Risk Analysis of Agricultural Tillage Systems Using the SMART Stochastic Efficiency Software Package. World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. p. 463-469.
An Exploratory Investigation on the Invasiveness of Environmental Modeling Frameworks Reprint Icon - (Proceedings)
Lloyd, W., David, O., Ascough II, J.C., Rojas, K.W., Carlson, J.R., Leavesley, G.H., Krause, P., Green, T.R., Ahuja, L.R. 2009. An Exploratory Investigation on the Invasiveness of Environmental Modeling Frameworks. World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation.p. 909-915.
Farming Systems Modeling Using the Object Modeling System (OMS): Overview, Applications, and Future Plans Reprint Icon - (Abstract Only)
Carlson, J.R., Ascough II, J.C., David, O., Green, T.R., Rojas, K.W., Ahuja, L.R., Geter, F.W. 2010. Farming Systems Modeling Using the Object Modeling System (OMS): Overview, Applications, and Future Plans. Meeting Abstract. p. 49-50.
A Component-Based Distributed Watershed Model for the USDA CEAP Watershed Assessment Study Reprint Icon - (Abstract Only)
Ascough II, J.C., David, O., Krause, P., Green, T.R., Heathman, G.C., Kralisch, S., Ahuja, L.R. 2009. A Component-Based Distributed Watershed Model for the USDA CEAP Watershed Assessment Study. Meeting Abstract. p.19-20.
Space-Time Dynamics of Soil Water and Process Interactions in Semi-Arid Terrain, Colorado, USA Reprint Icon - (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.
Simulation of Climate Change Impacts on Wheat-Fallow Cropping Systems - (Abstract Only)
Ko, J., Ahuja, L.R., Kimball, B.A., Anapalli, S., Ma, L., Green, T.R., Wall, G.W., Pinter Jr, P.J. 2009. Simulation of Climate Change Impacts on Wheat-Fallow Cropping Systems. ASA-CSSA-SSSA Annual Meeting Abstracts.
Effects of Estimating Soil Hydraulic Properties and Root Growth Factor on Soil Water Balance and Crop Production - (Peer Reviewed Journal)
Ma, L., Hoogenboom, G., Saseendran, S.A., Bartling, P.N., Ahuja, L.R., Green, T.R. 2009. Effects of Estimating Soil Hydraulic Properties and Root Growth Factor on Soil Water Balance and Crop Production. Agronomy Journal. 101(3) :572-583.
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 Reprint Icon - (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.
Tillage Effects on Soil Hydraulic Properties in Space and Time: State of the Science - (Review Article)
Strudley, M.W., Green, T.R., Ascough Ii, J.C. 2008. Tillage Effects on Soil Hydraulic Properties in Space and Time: State of the Science. International Journal of Soil and Tillage Research. 99:4-48. 2008.
Global Analogues of Climate Change Effects on Agriculture and Groundwater Between Hydrologically Similar Regions of the World Reprint Icon - (Abstract Only)
Green, T.R., Bates, B.C., Charles, S.P., Fathelrahman, E.M. 2008. Global Analogues of Climate Change Effects on Agriculture and Groundwater Between Hydrologically Similar Regions of the World. Meeting Abstract.
Tradeoff Analysis Between Economic Development and Climate Change Adaptation Strategies for River Nile Basin Water Resources - (Book / Chapter)
Fathelrahman, E.M., Ascough II, J.C., Green, T.R., Babiker, M.H., Strzepek, K.M. 2009. Tradeoff Analysis Between Economic Development and Climate Change Adaptation Strategies for River Nile Basin Water Resources. In: Taylor, R.,Tindimugaya, C., Owor, M., and Shamsudduha, M, editors. Groundwater and Climate in Africa (Proceedings of the Kampala Conference, June 2008). Wallingford, UK: IAHS Bood Publication 334. p. 257-269.
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.
Development and Testing of a Terrain-Based Hydrologic Model for Spatial Hortonian Infiltration and Run-Off/on Reprint Icon - (Peer Reviewed Journal)
Meng, H., Green, T.R., Salas, J., Ahuja, L.R. 2008. Development and testing of a terrain-based hydrologic model for spatial hortonian infiltration and run-off/on . Environmental Modeling & Software. 23 (6): 794-812.
Spatial Variability and Scaling of Infiltration on Undulating Agricultural Terrain Reprint Icon - (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).
Potential Impacts of Climate Change and Human Activity on Subsurface Water Resources Reprint Icon - (Peer Reviewed Journal)
Green, T.R., Taniguchi, M., Kooi, H. 2007. Potential Impacts of Climate Change and Human Activity on Subsurface Water Resources. Vadose Zone Journal 2007;6 531-532. DOI: 10.2136/vzj2007.0098.
Simulated Effects of Soil Temperature and Salinity on Capacitance Sensor Measurements Reprint Icon - (Peer Reviewed Journal)
Schwank, M., Green, T.R. 2007. Simulated Effects of Soil Temperature and Salinity on Capacitance Sensor Measurements. Sensors 2007 (4/26/2007), 7, 548-577.
Physically Based Simulation of Potential Effects of Carbon Dioxide Altered Climates on Groundwater Recharge Reprint Icon - (Peer Reviewed Journal)
Green, T.R., Bates, B., Charles, S., Fleming, P. 2007. A physically based method for simulating effects of CO2-altered climates on groundwater recharge. Vadose Zone Journal 2007; 6: 597-609.
Digital Elevation Accuracy and Grid Cell Size: Effects on Estimated Terrain Attributes Reprint Icon - (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.
Laboratory and Theoretical Investigations of a Ring-Capacitor Sensor - (Abstract Only)
Schwank, M., Green, T.R. 2007. Laboratory and Theoretical Investigations of a Ring-Capacitor Sensor. Proceedings of the International Soil Moisture Technology Conference. Honolulu, HI. March 20,2007.
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.
Scaling up preferential flow in unsaturated undulating terrain due to anisotropic soil hydraulic conductivity and other potential mechanisms - (Abstract Only)
Green, T.R., Freyberg, D., Constanz, J., Ahuja, L.R. 2006. Scaling up preferential flow in unsaturated undulating terrain due to anisotropic soil hydraulic conductivity and other potential mechanisms. International Conference on Preferential Flow and Transport Processes in Soil. Zurich, Switzerland. November 7,2006.
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).
Laboratory Characterization of Commercial Capacitance Sensor for Estimating Permittivity and Inferring Soil Water Content - (Peer Reviewed Journal)
Schwank, M., Green, T.R., Matzler, C., Benedickter, H., Fluehler, H. 2006. Laboratory Characterization of Commercial Capacitance Sensor for Estimating Permittivity and Inferring Soil Water Content. Vadose Zone Journal.
Comparison of Grid-Based Algorithms for Computing Upslope Contributing Area Reprint Icon - (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
Laboratory Characterization of a Commercial Capacitance Sensor for Estimating Permittivity and Inferring Soil Water Content - (Book / Chapter)
Schwank, M., Green, T.R., Matzler, C., Benedickter, H., Schulin, R., Fluehler, H. 2006. Laboratory Characterization of a Commercial Capacitance Sensor for Estimating Permittivity and Inferring Soil Water Content. Vadose Zone Journal.
Spatial Scaling of Surface Water Infiltration and Its Implications for Estimating Groundwater Recharge - (Abstract Only)
Green, T.R. 2006. Spatial scaling of surface water infiltration and its implications for estimating groundwater recharge. Meeting Abstract.Intl. Symposium on Groundwater Resources Assessment under the Pressures of Humanity and Climate Change. Kyoto, Japan, April 4-6, 2006.
Effect of Soil Water on Apparent Soil Electrical Conductivity and Texture Relationships in a Dryland Field. - (Peer Reviewed Journal)
Mccutsheon, M., Fahahani, J., Stednick, J., Buchleiter, G.W., Green, T.R. 2006. Effect of Soil Water on Apparent Soil Electrical Conductivity and Texture Relationships in a Dryland Field. Biosystems Engineering (2006) 94,19-3
Effect of Soil Water on Apparent Soil Electrical Conductivity and Texture Relationships in a Dryland Field. - (Peer Reviewed Journal)
Mccutcheon, M.C., Farahani, H., Stednick,, J.D., Buchleiter, G.W., Green, T.R. 2006. Effect of soil water on apparent soil electrical conductivity and texture relationships in a dryland field. Biosystems Engineering.(2006) 94 (1), 19-32
An Improved Agricultural System Model for Space-Time Simulation of Agricultural Landscape Variability - (Abstract Only)
Ascough II, J.C., Ma, L., Green, T.R., Flerchinger, G.N., Mcmaster, G.S., Ahuja, L.R., Vandenberg, B.C. 2006. An improved agricultural system model for space-time simulation of agricultural landscape variability. World Congress of Soil Science. July 9-15,2006.
Key Criteria and Selection of Sensitivity Analysis Methods Applied to Natural Resource Models Reprint Icon - (Proceedings)
Ascough Ii, J.C., Green, T.R., Ma, L., Ahuja, L.R. 2005. Key criteria and selection of sensitivity analysis methods applied to natural resource models. Modsim 2005 International Congress on Modeling and Simulation, Modeling and Simulation Society of Australia and New Zealand, Melbourne, Australia. December 12-15, 2005. p2463-2469.
Key Criteria and Selection of Sensitivity Analysis Methods Applied to Natural Resource Models Reprint Icon - (Proceedings)
Ascough Ii, J.C., Green, T.R., Ma, L., Ahuja, L.R. 2005. Key criteria and selection of sensitivity analysis methods applied to natural resource models. International Congress on Modeling and Simulation Proceedings. Salt Lake City, UT, November 6-11,2005.
Crop Canopy and Residue Rainfall Interception Effects on Water and Crop Growth - (Peer Reviewed Journal) - (01-Nov-05)
Modelling Crop Canopy and Residue Rainfall Interception Effects on Soil Hydrological Components for Semi-Arid Agriculture - (Peer Reviewed Journal)
Kozak, J.A., Ahuja, L.R., Green, T.R., Ma, L. 2007. Modelling Crop Canopy and Residue Rainfall Interception Effects on Soil Hydrological Components for Semi-Arid Agriculture. Hydrological Processes. 21:229-241. Can be accessed at doi: 10.1002/hyp.6235.
Modeling a Wheat-Maize Double Cropping System in China Using Two Plant Growth Modules with Rzwqm - (Peer Reviewed Journal)
Yu, Q., Saseendran, S.A., Ma, L., Flerchinger, G.N., Green, T.R., Ahuja, L.R. 2006. Modeling a wheat-maize double cropping system in china using two plant growth modules with rzwqm. Agricultural Systems. 89(2-3):457-477.2006.
Scaling Infiltration and Other Soil Water Processes Across Diverse Soil Textural Classes - (Abstract Only)
Kozak, J.A., Ahuja, L.R., Green, T.R. 2005. Scaling infiltration and other soil water processes across diverse soil textural classes. American Geophysical Union 2005 Annual Meeting. SanFrancisco, CA. Dec. 7, 2005.
Laboratory Characterization of Capacitance Sensors for Measuring Soil Water Content - (Abstract Only)
Green, T.R., Schwank, M., Fluehler, H. 2005. Laboratory Characterization of Capacitance Sensors for Measuring Soil Water Content. Fall Meeting of theTrans American Geophysical Union, San Francisco, CA. December 5-9, 2005.
A Dem-Based Watershed Model with Spatial Hortonian Infiltration and Ruh-Off/on - (Abstract Only)
Meng, H., Green, T.R., Salas, J.D., Ahuja, L.R. 2005. A DEM-based watershed model with spatial hortonian infiltration and ruh-off/on. Trans American Geophysical Union, 86 (52), Fall Meeting Supplement, Abstract H13H-1400.
Evaluating Nitrogen and Water Management of a Double Cropping System in China - (Peer Reviewed Journal)
Hu, C., Saseendran, S.A., Green, T.R., Ma, L., Li, X., Ahuja, L.R. 2006. Evaluating nitrogen and water management of a double cropping system in china. Vadose Zone Journal. 5:493-505.2006.
Spatial Water Quality Modeling Framework Development Using Arcgis9 - (Proceedings)
Ascough II, J.C., Green, T.R., Ahuja, L.R., Ma, L., Vandenberg, B.C. 2005. Spatial water quality modeling framework development using ArcGIS9. Proceedings 05-2082. 2005 ASAE Annual International Meeting, Tampa, FL. July 17-20. http://asae/frymulti.com/techpapers.asp?confid=tfl2005.
Aggregation and Sampling in Deterministic Chaos: Implications for Chaos Identification in Hydrological Processes - (Peer Reviewed Journal)
Salas, J.D., Kim, H.S., Burlando, P., Green, T.R. 2005. Aggregation and sampling in deterministic chaos: implications for chaos identification in hydrological processes. Agronomy Abstracts. Nonlinear Processes in Geophysics, 12, 557-567, 2005.
Scaling and Estimation of Evaporation and Transpiration of Water Across Soil Textures - (Peer Reviewed Journal)
Kozak, J.A., Ahuja, L.R., Ma, L., Green, T.R. 2005. Scaling and estimation of evaporation and transpiration of water across soil textures. Vadose Zone Journal. 4:418-427. 2005.
Modeling Spatial Variability in Agriculture: the Agsimsgis Water Quality Tool - (Abstract Only)
Ascough Ii, J.C., Green, T.R., Ahuja, L.R., Vandenberg, B.C., Ma, L. 2004. Modeling spatial variability in agriculture: the agsimsgis water quality tool. Meeting Abstract. ESRI Southwest Users Group 2004 conference, Telleride, CO, October 20-22, 2004. www.swuggis.org/swug_2004/abstracts.shtml.
A Review of Climate Change and Societal Impacts on Groundwater: Implications for a Unesco Initiative - (Abstract Only)
Taniguchi, M., Green, T.R., Aureli, A. 2004. A review of climate change and societal impacts on groundwater: implications for a UNESCO initiative. Eos Trans. American Geophysical Union. 85(47), Fall Meet. Suppl., Abstract H21F-1085. 2004.
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.
Temperature Effects on Capacitance Measurements of Soil-Water Content: Theory and Field Application - (Abstract Only)
Green, T.R., Schwank, M., Fluhler, H. 2004. Temperature effects on capacitance measurements of soil-water content: theory and field application. Agronomy Abstracts a04-5654. (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.
The Future of Spatial Modeling at Gpsru - (Abstract Only)
Ascough Ii, J.C., Green, T.R., Ahuja, L.R., Mcmaster, G.S., Ma, L. 2004. The future of spatial modeling at GPSRU. Workshop Proceedings. Intl. Workshop on Applications, Enhancements, and Collaboration of ARS RZWQM and GPSFARM Models, April 20 - 22, 2004, Fort Collins, CO.
Space-Time Modeling of Agricultural Landscape Variability Using Agsimgis - (Proceedings)
Ascough Ii, J.C., Green, T.R., Cipra, J.E., Ahuja, L.R., Ma, L. 2004. Space-time modeling of agricultural landscape variability using agsimgis. Annual Hydrology Days Conference Proceedings. March 10-12, 2004. Fort Collins, CO. pp. 10-21.
Sensitivity of Spatial Analysis Neural Network Training and Interpolation to Structural Parameters - (Peer Reviewed Journal)
Martinez, A., Salas, J.D., Green, T.R. 2004. Sensitivity of spatial analysis neural network training and interpolation to structural parameters. Mathematical Geology. August 2004. Vol. 36, No. 6, pp. 721-742.
Sensitivity of Spatial Analysis Neural Network Training and Interpolation to Structural Parameters - (Peer Reviewed Journal)
Martinez, A., Salas, J.D., Green, T.R. 2004. Sensitivity of spatial analysis neural network training and interpolation to structural parameters. Mathematical Geology. August 2004. Vol. 36, No. 6, pp. 721-742.
Sensitivity of Spatial Analysis Neural Network Training and Interpolation to Structural Parameters - (Peer Reviewed Journal)
Martinez, A., Salas, J.D., Green, T.R. 2004. Sensitivity of spatial analysis neural network training and interpolation to structural parameters. Mathematical Geology. August 2004. Vol. 36, No. 6, pp. 721-742.
Sensitivity of Spatial Analysis Neural Network Training and Interpolation to Structural Parameters - (Peer Reviewed Journal)
Martinez, A., Salas, J.D., Green, T.R. 2004. Sensitivity of spatial analysis neural network training and interpolation to structural parameters. Mathematical Geology. August 2004. Vol. 36, No. 6, pp. 721-742.
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.
Fractal-Based Scaling and Scale-Invariant Dispersion of Peak Concentrations of Crop Protection Chemicals in Rivers - (Peer Reviewed Journal)
Gustafson, D.I., Carr, K.H., Green, T.R., Gustin, C., Jones, R.L., Richards, R.P. 2004. Fractal-based scaling and scale-invariant dispersion of peak concentrations of crop protection chemicals in rivers. Environmental Science and Technology. Vol. 38, No. 11, June 2004. pages 2995-3003.
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).
Agsimgis: Integrated GIS and Agricultural System Modeling - (Abstract Only)
ASCOUGH II, J.C., GREEN, T.R., CIPRA, J.E., FLYNN, R.L., NORMAN, J.B. AGSIMGIS: INTEGRATED GIS AND AGRICULTURAL SYSTEM MODELING. ENVIRONMENTAL SYSTEMS RESEARCH INSTITUTE USERS CONFERENCE PROCEEDINGS. 2003.
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.
Advances and Challenges in Predicting Agricultural Management Effects on Soil Hydraulic Properties - (Peer Reviewed Journal)
GREEN, T.R., AHUJA, L.R., BENJAMIN, J.G. ADVANCES AND CHALLENGES IN PREDICTING AGRICULTURAL MANAGEMENT EFFECTS ON SOIL HYDRAULIC PROPERTIES. GEODERMA. 2003. Vol. 116, pp. 3-27.
Watershed Approach: Context, Strategy and Practice - (Book / Chapter)
Green, T.R., Vanschilfgaarde, J. 2002. Watershed approach: context, strategy and practice. Encyclopedia of Soil Science. R. Lal (ed) Pg. 1403-1407. www.dekker.com
Fractal-Based, Scale-Dependent Models for Characterizing Peak Concentrations of Crop Protection Chemicals in Surface Waters - (Abstract Only)
Gustafson, D.I., Carr, K.H., Gustin, C., Green, T.R., Jones, R.L., Richards, R.P. 2002. Fractal-based, scale-dependent models for characterizing peak concentrations of crop protection chemicals in surface waters. Internationl Congress on Chemistry of Crop Production. July 1,2002.
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.
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.
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.
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.
Testing and Application of Spatial Analysis Neural Networks: Sensitivity to Structural Parameters - (Proceedings) - (02-Mar-01)
Identifying Opportunities for Investigating the Effects of Temperature on Infiltration and Implications for Modeling the Hydrologic Response of Watersheds - (Proceedings) - (03-Mar-00)
Quantifying Wheel-Track Effects on Soil Hydraulic Properties for Agricultural Systems Modeling - (Proceedings) - (31-Jan-00)
Scale Issues in Modeling Agroecosystems: a Review - (Abstract Only)
Ascough Ii, J.C., Green, T.R., Ruan, H., Ahuja, L.R. 1999. Scale issues in modeling agroecosystems: a review. Agronomy Abstracts. American Society of Agronomy Meetings. October 31, 1999.
Effects of Overland and Lateral Subsurface Flow on Soil Water Variability at the Field Scale: Model Development - (Abstract Only)
Ruan, H., Green, T.R., Ascough Ii, J.C., Ahuja, L.R. 1999. Effects of overland and lateral subsurface flow on soil water variability at the field scale: model development. Agronomy Abstracts, American Society of Agronomy Meetings, October 1999.
Preliminary Fractal Analysis of Crop Yield and Experimental Design for Modeling Space-Time Variability under Dryland Agriculture - (Proceedings) - (01-Mar-99)
Relating Stream-Bank Erosion to in-Stream Transport of Suspended Sediment - (Peer Reviewed Journal) - (11-Aug-98)
Process Interactions in the Environment - (Book / Chapter) - (11-Aug-98)
The Tarrawarra Project: High Resolution Spatial Measurement, Modelling and Analysis of Soil Moisture and Hydrological Response. - (Peer Reviewed Journal) - (11-Aug-98)
Modelling Upland and Instream Erosion, Sediment and Phosphorus Transport Ina Large Catchment - (Peer Reviewed Journal) - (11-Aug-98)
An Analytical Model for Stream Sediment Transport: Application to Murray and Murrumbidgee River Reaches, Australia - (Peer Reviewed Journal) - (11-Aug-98)
ARS News Articles
Last Modified: 4/17/2014
Footer Content Back to Top of Page