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United States Department of Agriculture

Agricultural Research Service

Related Topics

James C Ascough
Water Management Systems Research
Civil Engineering

Phone: (970) 492-7402
Fax: (970) 492-7310

2150 CENTER AVENUE
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
In-House Appropriated (D)
  Accession Number: 422726
Enabling Sustainable Landscape Design for Continual Improvement of Operating Bioenergy Supply Systems
Interagency Reimbursable Agreement (I)
  Accession Number: 431601
Improve and Enhance the Object Modeling System (OMS) for Building New Models and Conservation Tools and Transferring This Technology
Non-Assistance Cooperative Agreement (S)
  Accession Number: 425201
Modeling Ecosystem Services in Agricultural Watersheds
Non-Assistance Cooperative Agreement (S)
  Accession Number: 431465

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Application of the WEPS and SWEEP models to non-agricultural disturbed lands -
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.
Advances in the spatially distributed ages-w model: parallel computation, java connection framework (JCF) integration, and streamflow/nitrogen dynamics assessment -
Improving component interoperability and reusability with the java connection framework (JCF): overview and application to the ages-w environmental model -
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 -
Augmenting watershed model calibration with incorporation of ancillary data sources and qualitative soft data sources Reprint Icon -
Yen, H., White, M.J., Ascough II, J.C., Smith, D.R., Arnold, J.G. 2016. Augmenting watershed model calibration with incorporation of ancillary data sources and qualitative soft data sources. Journal of the American Water Resources Association. 52(3):788-798. doi:10.1111/1752-1688.12428.
Improved ant colony optimization for optimal crop and irrigation water allocation by incorporating domain knowledge -
Nguyen, D.H., Dandy, G.C., Maier, H.R., Ascough II, J.C. 2016. Improved ant colony optimization for optimal crop and irrigation water allocation by incorporating domain knowledge. Journal of Water Resources Planning and Management. doi.org/10.1061/(ASCE)WR.1943-5452.0000662.
Framework for computationally efficient optimal irrigation scheduling using ant colony optimization -
Nguyen, D.H., Maier, H.R., Dandy, G.C., Ascough II, J.C. 2015. Framework for computationally efficient optimal irrigation scheduling using ant colony optimization. Environmental Modelling & Software. Environmental Modelling & Software 76:37-53.
Development of the Land-use and Agricultural Management Practice web-Service (LAMPS) for generating crop rotations in space and time -
Kipka, H., Green, T.R., David, O., Garcia, L., Ascough II, J.C., Arabi, M. 2015. Development of the Land-use and Agricultural Management Practice web-Service (LAMPS) for generating crop rotations in space and time. Soil & Tillage Research. 155:233–249. doi:10.1016/j.still.2015.08.005.
The AgroEcoSystem-Watershed (AgES-W) model: overview and application to experimental watersheds -
Ascough II, J.C., Green, T.R., David, O., Kipka, H., McMaster, G.S., Lighthart, N. 2015. The AgroEcoSystem-Watershed (AgES-W) model: overview and application to experimental watersheds. ASABE Paper No. 152163051, ASABE, St. Joseph, MI. doi: 10.13031/aim.20152163051.
A robust and flexible Geospatial Modeling Interface (GMI) for deploying and evaluating natural resource models -
Ascough II, J.C., Lighthart, N., David, O. 2015. A robust and flexible Geospatial Modeling Interface (GMI) for deploying and evaluating natural resource models. ASABE Paper No. 152189864, ASABE, St. Joseph, MI. doi: 10.13031/aim.20152189864.
An open-source Java-based Toolbox for environmental model evaluation: The MOUSE Software Application -
Ascough II, J.C., Fischer, C., Lighthart, N., David, O., Kralisch, S. 2015. An open-source Java-based Toolbox for environmental model evaluation: The MOUSE Software Application. ASABE Paper No. 152189328, ASABE, St. Joseph, MI. doi: 10.13031/aim.20152189328.
A component-based, integrated spatially distributed hydrologic/water quality model: AgroEcoSystem-Watershed (AgES-W) overview and application -
Ascough II, J.C., T.R. Green, O. David, and H. Kipka. 2015. A Component-Based, Integrated Spatially Distributed Hydrologic/Water Quality Model: AgroEcoSystem-Watershed (AgES-W) Overview and Application. In: Maxwell, R., Hill, M., Zheng, C. and Tonkin, M. (Eds.), Proc. MODFLOW and More 2015: Modeling a Complex World, May 31-June 3, 2015, Integrated Groundwater Modeling Center, Boulder, Colorado. pp. 1-5.
Integrating model behavior, optimization, and sensitivity/uncertainty analysis: overview and application of the MOUSE software toolbox -
Ascough II, J.C., N. Lighthart, C. Fischer, and S. Kralisch. 2015. Integrating Model Behavior, Optimization, and Sensitivity/Uncertainty Analysis: Overview and Application of the MOUSE Software Toolbox. In: Maxwell, R., Hill, M., Zheng, C. and Tonkin, M. (Eds.), Proc. MODFLOW and More 2015: Modeling a Complex World, May 31-June 3, 2015, Integrated Groundwater Modeling Center, Boulder, Colorado. pp. 388-393.
A robust and flexible Geospatial Modeling Interface (GMI) for environmental model deployment and evaluation -
Ascough II, J.C. and N. Lighthart. 2015. A Robust and Flexible Geospatial Modeling Interface (GMI) for Environmental Model Deployment and Evaluation. In: Maxwell, R., Hill, M., Zheng, C. and Tonkin, M. (Eds.), Proc. MODFLOW and More 2015: Modeling a Complex World, May 31-June 3, 2015, Integrated Groundwater Modeling Center, Boulder, Colorado. pp. 289-293.
The Spatially-Distributed Agroecosystem-Watershed (Ages-W) Hydrologic/Water Quality (H/WQ) model for assessment of conservation effects -
Ascough II, J.C., T.R. Green, O. David, H. Kipka, and G.S. McMaster. 2015. The spatially-distributed AgroEcoSystem-Watershed (AgES-W) hydrologic/water quality (H/WQ) model for assessment of conservation effects. In: Ramirez, J.A. (Ed.), Proc. Hydrology Days 2015, March 23-25, Fort Collins, Colorado. Colorado State University, Fort Collins, Colorado. pp. 1-16.
The Model Optimization, Uncertainty, and SEnsitivity analysis (MOUSE) toolbox: overview and application -
Ascough II, J.C., C. Fischer, N.P. Lighthart, O. David, T.R. Green, and S. Kralisch. 2015. The model optimization, uncertainty, and sensitivity analysis (MOUSE) Toolbox: overview and application. In: Ramirez, J.A. (Ed.), Proc. Hydrology Days 2015, March 23-25, Fort Collins, Colorado. Colorado State University, Fort Collins, Colorado. pp. 17-28.
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.
Soil erosion and organic matter variations for central Great Plains cropping systems under residue removal Reprint Icon -
Nelson, R., Tatarko, J., Ascough II, J.C. 2015. Soil erosion and organic matter variations for central Great Plains cropping systems under residue removal. Transactions of the ASABE. 58(2):415-427. DOI:10.13031/trans.58.10981.
Challenges and progress in distributed watershed modeling: applications of the AgroEcoSystem-Watershed (AgES-W) model -
J.C. Ascough II, Tomer, M.D., Green, T.R., David, O., Cole. K.J., Kipka, H., and Porter, S.A. 2014. Challenges and progress in distributed watershed modeling: Applications of the AgroEcoSystem-Watershed (AgES-W) model. Procs. Third 21st Century Watershed Technology Conference and Workshop: Improving Water Quality and Environment, Paper No. 14-002, pgs. 1-8. DOI: 10.13031/wtcw.2014-002.DOI: 10.13031/wtcw.2014-002.
Sensitivity analysis of reference evapotranspiration to sensor accuracy Reprint Icon -
DeJonge, K.C., Ahmadi, M., Ascough II, J.C., Kinzli, K.C. 2014. Sensitivity analysis of reference evapotranspiration to sensor accuracy. Computers and Electronics in Agriculture. 110 (2015) 176-186.
Dataset: Soil erosion and organic matter for central Great Plains cropping systems under residue removal -
Tatarko, J., Nelson, R.G., Ahuja, L.R. 2015. Dataset: Soil erosion and organic matter for central Great Plains cropping systems under residue removal. National Ag Library. http://dx.doi.org/10.15482/USDA.ADC/1167058.
Economic risk and efficiency assessment of fisheries in Abu-Dhabi, United Arab Emirates (UAE): A stochastic approach -
Fathelrahman, E., Basarir, A., Gheblawi, M., Sherif, S., Ascough II, J.C. 2014. Economic risk and efficiency assessment of fisheries in Abu-Dhabi, United Arab Emirates (UAE): A stochastic approach. Sustainability. 6(6):3878-3898.
Landuse and agricultural management practice web-service (LAMPS) for agroecosystem modeling and conservation planning -
Kipka, H., O. David, T.R. Green, L. Garcia, J.C. Ascough II, K.W. Rojas, and M. Arabi. 2014. Landuse and agricultural management practice web-Service (LAMPS) for agroecosystem modeling and conservation planning. Proc. 2014 Soil and Water Conservation Society Meeting, July 27-30, Lombard, Illinois. pp. 89.
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.
The virtual machine (VM) scaler: an infrastructure manager supporting environmental modeling on IaaS clouds -
Lloyd, W., David, O., Arabi, M., Ascough II, J.C., Green, T.R., Carlson, J.R., Rojas, K.W. 2014. The virtual machine (VM) scaler: an infrastructure manager supporting environmental modeling on IaaS clouds. Environmental Modeling International Conference Proceedings. Available: http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_329.pdf.
Model-as-a-service (MaaS) using the cloud service innovation platform (CSIP) -
Olaf, D., Lloyd, W., Rojas, K.W., Arabi, M., Geter, F.W., Ascough II, J.C., Green, T.R., Leavesley, G.H., Carlson, J.R. 2014. Model-as-a-service (MaaS) using the cloud service innovation platform (CSIP). Environmental Modeling International Conference Proceedings. Available: http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_314.pdf.
The land management and operations database (LMOD) -
David, O., Yaege, L.R., Rojas, K.W., Green, T.R., Kipka, H., Lloyd, W., Carlson, J.R., Geter, F.W., Ascough II, J.C. 2014. The land management and operations database (LMOD). Environmental Modeling International Conference Proceedings. Available: http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_291.pdf.
Advances in distributed watershed modeling: a review and application of the AgroEcoSystem-Watershed (AgES-W) model -
Ascough II, J.C., Green, T.R., David, O., Kipka, H., Mcmaster, G.S., Fink, M., Krause, P., Kralisch, S. 2014. Advances in distributed watershed modeling: a review and application of the AgroEcoSystem-Watershed (AgES-W) model. Environmental Modeling International Conference Proceedings. Available: http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_351.pdf.
The geospatial modeling interface (GMI) framework for deploying and assessing environmental models -
Ascough II, J.C., Lighthart, N.P., David, O. 2014. The geospatial modeling interface (GMI) framework for deploying and assessing environmental models. Environmental Modeling International Conference Proceedings. Available: http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_350.pdf.
Overview and application of the Model Optimization, Uncertainty, and SEnsitivity Analysis (MOUSE) toolbox -
Ascough II, J.C., Fischer, C., Lighthart, N.P., David, O., Green, T.R., Kralisch, S. 2014. Overview and application of the Model Optimization, Uncertainty, and SEnsitivity Analysis (MOUSE) toolbox. Environmental Modeling International Conference Proceedings. Available: http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_358.pdf.
The Unified Plant Growth Model (UPGM): software framework overview and model application -
Ascough II, J.C., Mcmaster, G.S., Todd, B.L., Wagner, L.E., Fox, F.A., Edmunds, D.A., Herder, M.C. 2014. The Unified Plant Growth Model (UPGM): software framework overview and model application. Environmental Modeling International Conference Proceedings. Available: http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_352.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.
Toward improved calibration of watershed models: multisite many objective measures of information -
Ahmadi, M., Arabi, M., Ascough II, J.C., Fontane, D.G., Engel, B.A. 2014. Toward improved calibration of watershed models: multisite many objective measures of information. Environmental Modelling & Software. 59:135-145.
Soil and rainfall factors influencing yields of a dryland cropping system in Colorado -
Sherrod, L.A., Ahuja, L.R., Hansen, N.C., Ascough II, J.C., Westfall, D.G., Peterson, G.A. 2014. Soil and rainfall factors influencing yields of a dryland cropping system in Colorado. Agronomy Journal. 106:1179-1191.
Multisite-multivariable sensitivity analysis of distributed watershed models: enhancing the perceptions from computationally frugal methods -
Ahmadi, M., Ascough II, J.C., DeJonge, K.C., Arabi, M. 2014. Multisite-multivariable sensitivity analysis of distributed watershed models: enhancing the perceptions from computationally frugal methods. Ecological Modeling. 279:54–67.
Simulating unstressed crop development and growth using the Unified Plant Growth Model (UPGM) -
McMaster, G.S., Ascough II, J.C., Edmunds, D.A., Wagner, L.E., Fox, F.A., Dejonge, K.C., Hansen, N.C. 2014. Simulating unstressed crop development and growth using the Unified Plant Growth Model (UPGM). Environmental Modeling and Assessment. 19(5):407-424. DOI:10.1007/s10666-014-9402-x.
Sensitivity and uncertainty of input sensor accuracy for grass-based reference evapotranspiration -
DeJonge, K.C., Ahmadi, M., Ascough II, J.C., Kinzli, K. 2013. Sensitivity and uncertainty of input sensor accuracy for grass-based reference evapotranspiration. Meeting Abstract. Nov 3-6, 2013 Tampa Florida ASA-SSSA-CSSSA Meeting.
Introducing the GRACEnet/REAP data contribution, discovery and retrieval system -
Del Grosso, S.J., White, J.W., Wilson, G., Vandenberg, B.C., Karlen, D.L., Follett, R.F., Johnson, J.M., Franzluebbers, A.J., Archer, D.W., Gollany, H.T., Liebig, M.A., Ascough II, J.C., Reyes-Fox, M.A., Starr, J.L., Barbour, N.W., Polumsky, R.W., Gutwein, M., James, D.E., Pellack, L.S. 2013. Introducing the GRACEnet/REAP data contribution, discovery and retrieval system. Journal of Environmental Quality. 42:1274-1280. DOI:10.2134/jeq2013.03.0097.
Modeling landscape-scale nitrogen management for conservation -
Ascough II, J.C., Delgado, J.A. 2015. Modeling landscape-scale nitrogen management for conservation. In: GIS Applications in Agriculture, Volume Four, Conservation Planning, T. Mueller and G.F. Sassenrath (Eds.). CRC Press, Boca Raton, FL. pp. 101–118. doi:10.1201/b18173-8.
Advances in soil erosion research: processes, measurement, and modeling -
Flanagan, D.C., Ascough II, J.C., Nieber, J.L., Misra, D., Douglas-Mankin, K.R. 2013. Advances in soil erosion research: processes, measurement, and modeling. Transactions of the ASABE. 56(2):455-463.
Using the response surface methodology for economic and environmental trade-offs at the farm level -
Ascough II, J.C., Fathelrahman, E.M., Hoag, D.L. 2013. Using the response surface methodology for economic and environmental trade-offs at the farm level. J. Air, Soil and Water Research. 6:73-89.
Sensitivity and first-order/Monte Carlo uncertainty analysis of the WEPP hillslope erosion model -
Ascough II, J.C., Flanagan, D.C., Nearing, M.A., Engel, B.A. 2013. Sensitivity and first-order/Monte Carlo uncertainty analysis of the WEPP hillslope erosion model. Transactions of the ASABE. 56(2)/437-452.
WEPP: Model use, calibration, and validation -
Flanagan, D.C., Frankenberger, J.R., Ascough Ii, J.C. 2013. WEPP: Model use, calibration, and validation. American Society of Agricultural and Biological Engineers International (ASABE). July 21-24, 2013, Kansas City, Missouri. 2013. CD ROM.
Simulating crop phenological responses to water stress using the phenology mms software component -
Mcmaster, G.S., Ascough II, J.C., Edmunds, D.A., Nielsen, D.C., Prasad, P.V. 2013. Simulating crop phenological responses to water stress using the phenology mms software component. Applied Engineering in Agriculture. Vol. 29(2): 233-249.
Improving evapotranspiration simulations in the CERES-maize model under limited irrigation Reprint Icon -
DeJonge, K.C., Ascough II, J.C., Andales, A.A., Hansen, N.C., Garcia, L.A., Ababi, M. 2012. Improving evapotranspiration simulations in the CERES-maize model under limited irrigation. Agricultural Water Management (2012), pp. 92-103.
ArgoEcoSystem-watershed (AgES-W) model evaluation for streamflow and nitrogen/sediment dynamics on a midwest agricultural watershed -
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.
The AgESGUI geospatial simulation system for environmental model application and evaluation -
Ascough II, J.C., David, O., Murthy, S.V. 2012. The AgESGUI geospatial simulation system for environmental model application and evaluation. In Seppelt, R., Voinov, A.A., Lange, S., and Bankamp, D., editors. Proceedings of the Sixth Biennial Meeting of the International Environmental Modeling and Software Society, Managing Resources of a Limited Planet: Pathways and Visions uner Uncertainty, July 1-5, 2012, Leipzig, Germany. p. 1519-1526.
Domain specific languages for modeling and simulation: use case OMS3 -
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 -
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.
WEPP: Model use, calibration and validation -
Flanagan, D.C., Frankenberger, J.R., Ascough II, J.C. 2012. WEPP: Model use, calibration and validation. Transactions of the American Society of Agricultural and Biological Engineers. 55(4):1463-1477.
Opportunities for increasing utility of models for rangeland management -
Derner, J.D., Augustine, D.J., Ascough II, J.C., Ahuja, L.R. 2012. Opportunities for increasing utility of models for rangeland management. Rangeland Ecology and Management. 65(6):623-631.
A software engineering perspective on environmental modeling framework design: The object modeling system -
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 -
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.
Global sensitivity analysis of a dynamic agroecosystem model under different irrigation treatments -
DeJonge, K.C., Ascough II, J.C., Ahmadi, M., Andales, A.A., Arabi, M. 2012. Global sensitivity analysis of a dynamic agroecosystem model under different irrigation treatments. Ecological Modeling. 231(2012):113-125.
Development and application of a modular watershed-scale hydrologic model using the object modeling system: runoff response evaluation -
Ascough II, J.C., David, O., Krause, P., Heathman, G.C., Kralisch, S., Larose, M., Ahuja, L.R., Kipka, H. 2012. Development and application of a modular watershed-scale hydrologic model using the object modeling system: runoff response evaluation. Transactions of the ASABE. 55(1):117-135.
Environmental decision support systems (EDSS)development- challenges and best practices -
Mcintosh, B.S., Ascough II, J.C., Twery, M., Chew, J., Elmahdi, A., Haase, D., Harou, J., Hepting, D., Cuddy, S., Jakeman, A.J., Chen, S., Kassahun, A., Lautenbach, S., Matthews, K., Merritt, W., Quinn, N.W., Rodriguez-Roda, I., Sieber, S., Stavenga, M., Sulis, A., Ticehurst, J., Volk, M., Wrobel, M., Vandelden, H., El-Sawah, S., Rizzoli, A., Voinov, A. 2011. Environmental decision support systems (EDSS)development- challenges and best practices. Journal of Environmental Modeling and Software. 26(12):1389-1402.
International symposium on erosion and landscape evolution abstracts -
Ascough II, J.C., Flanagan, D.C. (Editors) 2011. International Symposium on Erosion and Landscape Evolution Abstracts. ASABE Pub. No. 711P0311. St. Joseph, Mich.: American Society of Agricultural and Biological Engineers. 135 p.
Development of a combined Wind and Water Erosion Model (WWEM) for the Object Modeling System -
Ascough II, J.C., Flanagan, D.C., Truman, C.C., David, O. 2011. Development of a combined Wind and Water Erosion Model (WWEM) for the Object Modeling System. In: Ascough II, J.Cl and Flanagan, D.C. (eds.),Proceedings of the International Symposium on Erosion and Landscape Evolution (ISELE) /September 18-21, 2011, Anchorage, AK. American Society of Agricultural and Biological Engineers (ASABE) Publication No. 711P0311, St. Joseph, MI. p. 60.
Continuum of risk analysis methods to assess tillage system sustainability at the experimental plot level -
Fathelrahman, E.M., Ascough II, J.C., Hoag, D.L., Malone, R.W., Heilman, P., Wiles, L., Kanwar, R.S. 2011. Continuum of risk analysis methods to assess tillage system sustainability at the experimental plot level. Sustainability. 3(7):1035-1063. DOI:10.3390/su3071035.
Rainfall Intensity Effects on Runoff and Sediment Losses From a Colorado Alfisol Reprint Icon -
Truman, C.C., Ascough II, J.C., Davis, J. 2011. Rainfall Intensity Effects on Runoff and Sediment Losses From a Colorado Alfisol. In: Ascough II, J.C. and Flanagan, D.C. (eds.), Proceedings of the International Symposium on Erosion and Landscape Evolution (ISELE), September 18-21, 2011, Anchorage, Alaska. American Society of Agricultural and Biological Engineers Publication No. 711P0311, St. Joseph, MI, p. 44. (Refereed Symposium Proceedings.) http://elibrary.asabe.org/azdez.asp?earch=1&JID=1&AID=39244&CID=isel2011&v=&i=&%-2&url.
The AgES-NLEAP tool for precision nitrogen conservation management -
Ascough II, J.C., Delgado, J.A. 2011. The AgES-NLEAP tool for precision nitrogen conservation management. Soil and Water Conservation Annual Meeting, July 17-20, 2011, Washington, D.C. p.13.
Evaluation of the Agro-EcoSystem-Watershed (AgES-W)model for estimating nutrient dynamics on a midwest agricultural watershed -
Ascough II, J.C., David, O., Smith, D.R., Heathman, G.C. 2011. Evaluation of the Agro-EcoSystem-Watershed (AgES-W)model for estimating nutrient dynamics on a midwest agricultural watershed. Soil and Water Conservation Society Annual Meeting,July 17-20,2011, Washington, D.C. Paper No. CTT-2.
Phenology MMS: a program to simulate crop phenological responses to water stress -
Mcmaster, G.S., Edmunds, D.A., Wilhelm, W.W., Nielsen, D.C., Prassad, P.V., Ascough II, J.C. 2011. Phenology MMS: a program to simulate crop phenological responses to water stress. Computers and Electronics in Agriculture. 77(2011):118-125.
Environmental modeling framework invasiveness: analysis and implications -
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.
Common challenges for ecological modelling: Synthesis of facilitated discussions held at the symposia organized for the 2009 conference of the International Society for Ecological Modelling in Quebec City, Canada -
Larocque, G.R., Mailly, D., Yue, T.X., Anand, M., Peng, C., Kazanci, C., Etterson, M., Goethals, P., Jorgensen, S.E., Schramski, J.R., Mcintire, E.J., Marceau, D.J., Chen, B., Chen, G.Q., Yang, Z.F., Novotna, B., Luckai, N.G., Bhatti, J.S., Liu, J., Munson, A., Gordon, A.M., Ascough II, J.C. 2011. Common challenges for ecological modelling: Synthesis of facilitated discussions held at the symposia organized for the 2009 conference of the International Society for Ecological Modelling in Quebec City, Canada. Ecological Modelling. 222(14):2456-2468.
Modeling water and soil quality environmental impacts associated with bioenergy crop production and biomass removal in the midwest usa -
Powers, S.E., Ascough II, J.C., Nelson, R.G., Larocque, G.R. 2011. Modeling water and soil quality environmental impacts associated with bioenergy crop production and biomass removal in the midwest usa. Ecological Modeling. 222(14):2430-2447.
Modeling of full and limited irrigation scenarios for corn in a semiarid environment -
DeJonge, K.C., Andales, A.A., Ascough II, J.C., Hansen, N.C. 2011. Modeling of full and limited irrigation scenarios for corn in a semiarid environment. Transactions of the ASABE. 54(2):481-492.
Spatially-distributed stream flow and nutrient dynamics simulations using the component-based AgroEcoSystem-Watershed (AgES-W)Model -
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.
An economic and stochastic efficiency comparison of tillage systems in corn and soybean under risk -
Fathelrahman, E.M., Ascough II, J.C., Hoag, D.L., Malone, R.W., Heilman, P., Wiles, L., Kanwar, R.S. 2011. An economic and stochastic efficiency comparison of tillage systems in corn and soybean under risk. Experimental Agriculture. 47(1):111-136.
Simulated rainfall study for transport of veterinary antibiotics - mass balance analysis -
Sung-Chul, K., Davis, J.G., Truman, C.C., Ascough II, J.C., Carlson, K. 2009. Simulated rainfall study for transport of veterinary antibiotics - mass balance analysis. Journal of Hazardous Materials. 175:836-843.
Crop Management to Cope with Global Change: A Systems Perspective Aided by Information Technologies -
McMaster, G.S., Ascough II, J.C. 2011. Crop Management to Cope with Global Change: A Systems Perspective Aided by Information Technologies. Centre for Agriculture and Biosciences International. p. 172-190.
Simulating landscape catena effects in no-till dryland agroecosystems using GPFARM -
Ascough II, J.C., Andales, A.A., Sherrod, L.A., Mcmaster, G.S., Hansen, N.C., DeJonge, K.C., Fathelrahman, E.M., Ahuja, L.R., Peterson, G.A., Hoag, D.L. 2010. Simulating landscape catena effects in no-till dryland agroecosystems using GPFARM. Agricultural Systems. 103(8): 569-584.
Effective soil hydraulic properties in space and time: some field data analysis and modeling concepts -
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.
A conservation ontology and knowledge base to support delivery of technical assistance to agricultural producers in the united states -
Carlson, J.R., Butler, D.B., David, O., Rojas, K.W., Ascough II, J.C., Leavesley, G.H., Oaks, W.R., Price, L.C., Ahuja, L.R. 2010. A conservation ontology and knowledge base to support delivery of technical assistance to agricultural producers in the united states. In: Swayne, D.A., Yang, W., Voinov, A.A., Rizzoli, A., and Filatova, T., editors. Environmental Modeling International Conference Proceedings. International Modeling and Environmental Software Society, Modeling for Environment's Sake, July 5-8, 2010, Ottawa, Canada. p. 1861-1869.
Integrated agricultural system modeling using OMS3: component driven runoff and nutrient dynamics simulations -
Ascough II, J.C., David, O., Krause, P., Fink, M., Kralisch, S., Kipka, H., Wetzel, M. 2010. Integrated agricultural system modeling using OMS3: component driven runoff and nutrient dynamics simulations. In: Swayne, D.A., Yang, W., Voinov, A.A., Rizzoli, A., and Filatova, T., editors. Environmental Modeling International Conference Proceedings. International Modeling and Environmental Software Society, Modelling for Environment's Sake, July 5-8, 2010, Ottawa, Canada. p. 1089-1097.
Rethinking modeling framework design: object modeling system 3.0 -
David, O., Ascough II, J.C., Leavesley, G.H., Ahuja, L.R. 2010. Rethinking modeling framework design: object modeling system 3.0. In: Swayne, D.A., Yang, W.,Voinov, A.A., Rizzoli, A., and Filatova, T., editors. Environmental Modeling International Conference Proceedings. International Modeling and Environmental Software Society, Modeling for Environment's Sake, July 5-8, 2010, Ottawa, Canada. p. 1183-1191.
The GPFARM DS for agroecosystem sustainability: the past, future, and lessons learned -
Ascough II, J.C., Mcmaster, G.S., Dunn, G.H., Andales, A.A. 2010. The GPFARM DS for agroecosystem sustainability: the past, future, and lessons learned. In: Swayne, D.A., Yang, W., Voinov, A.A., Rizzoli, A., and Filatova, T., editors. Environmental Modeling International Conference Proceedings. International Modeling and Environmental Software Society, Modelling for Environment's Sake, July 5-8, 2010, Ottawa, Canada. p.2540-2547.
Environmental modeling framework invasiveness: analysis and implications -
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.
An analytical framework to assist decision makers in the use of forest ecosystem model predictions -
Larocque, G.R., Bhatti, J.S., Ascough II, J.C., Liu, J., Luckai, N., Mailly, D., Archambault, L., Gordon, A.M. 2011. An analytical framework to assist decision makers in the use of forest ecosystem model predictions. Journal of Environmental Modeling and Software. 26(3):280-288.
Object-Oriented Agricultural System Modeling: Component-Driven Nutrient Dynamics and Crop Yield Simulations -
Ascough II, J.C., David, O., Krause, P., Ahuja, L.R. 2009. Object-Oriented Agricultural System Modeling: Component-Driven Nutrient Dynamics and Crop Yield Simulations. ASA-CSSA-SSSA Annual Meeting Abstracts.
Calibration and Evaluation of CERES-Maize in Full and Limited Irrigation Scenarios for Corn in a Semiarid Environment -
DeJonge, K.C., Andales, A.A., Ascough II, J.C., Hansen, N.C. 2009. Calibration and Evaluation of CERES-Maize in Full and Limited Irrigation Scenarios for Corn in a Semiarid Environment. ASA-CSSA-SSSA Annual Meeting Abstracts.
Economic Risk Analysis of Agricultural Tillage Systems Using the SMART Stochastic Efficiency Software Package Reprint Icon -
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 -
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.
Economic Risk Analysis of Experimental Cropping Systems Using the SMART Risk Tool Reprint Icon -
Ascough II, J.C., Fathelrahman, E.M., Vandenberg, B.C., Hoag, D., Ahuja, L.R. 2009. Economic Risk Analysis of Experimental Cropping Systems Using the SMART Risk Tool. Meeting Abstract. p.17-18.
A Component-Based Distributed Watershed Model for the USDA CEAP Watershed Assessment Study Reprint Icon -
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.
Farming Systems Modeling Using the Object Modeling System (OMS): Overview, Applications, and Future Plans Reprint Icon -
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.
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.
Evaluating GPFARM Crop Growth, Soil Water, and Soil Nitrogen Components for Colorado Dryland Locations -
Ascough II, J.C. 2009. Evaluating GPFARM Crop Growth, Soil Water, and Soil Nitrogen Components for Colorado Dryland Locations. Natural Resources Research Update (NRRU). Update #238985.
Combined Wind and Water Erosion Modeling -
Flanagan, D.C., Wagner, L.E., Ascough Ii, J.C., Frankenberger, J.R. 2009. Combined Wind and Water Erosion Modeling [abstract]. Soil and Water Conservation Society and CEAP meeting, July 11-15, 2009, Dearborn, Michigan. 2009. CDROM.
Step 7: Choose the "Best" Risk Management Alternative -
Hoag, D.L., Fathelrahman, E.M., Ascough II, J.C. 2009. Step 7: Choose the "Best" Risk Management Alternative. Book Chapter.
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
The Importance of Uncertainty and Sensitivity Analyses in Process-Based Models of Carbon and Nitrogen Cycling in Terrestrial Ecosystems with Particular Emphasis on Forest Ecosystems -
Larocque, G.R., Bhatti, J.S., Liu, J., Ascough II, J.C., Luckai, N., Gordon, A.M. 2008. The Importance of Uncertainty and Sensitivity Analyses in Process-Based Models of Carbon and Nitrogen Cycling in Terrestrial Ecosystems with Particular Emphasis on Forest Ecosystems. Ecological Modeling. 219(3-4):261-263.
Conservation Tillage to Effectively Reduce Interrill Erodibility of Highly-Weathered Ultisols Reprint Icon -
Truman, C.C., Shaw, J.N., Flanagan, D.C., Reeves, D.W., Ascough II, J.C. 2009. Conservation Tillage to Effectively Reduce Interrill Erodibility of Highly-Weathered Ultisols. Journal of Soil and Water Conservation. 64(4):265-275. doi:10.2489/jswc.64.4.265.
SWAT Evaluation of Soil and Land Use GIS Data Sets on Simulated Stream Flow Reprint Icon -
Heathman, G.C., Larose, M., Ascough II, J.C. 2009. SWAT Evaluation of Soil and Land Use GIS Data Sets on Simulated Stream Flow. Journal of Soil and Water Conservation. 64(1):17-32.
Model development for evaluating USDA Conservation practices -
Ascough, II, J.C., Romkens, M.J. 2008. Model development for evaluating USDA Conservation practices. Proceedings of the ASCE World Environmental and Water Resources Congress Conference. May 12-18,2008. Honolulu, HI. CD-ROM.
Development of a common water and wind erosion model for soil conservation planning -
Flanagan, D.C., Ascough II, J.C., Wagner, L.E. 2008. Development of a common water and wind erosion model for soil conservation planning. In: Proceedings of the AgroEnviron 2008 (Sixth International Symposium AgroEnviron), April 28-May 1, 2008, Antalya, Turkey. p. 12.
Using Stochastic Effciency Analysis To Factor Distribution Of Weed Escapes Into Weed Management Decisions -
Wiles, L., Fathelrahman, E.M., Wilkerson, G.G., Ascough II, J.C. 2008. Using Stochastic Effciency Analysis To Factor Distribution Of Weed Escapes Into Weed Management Decisions. International Weed Science Congress.
Tillage Effects on Soil Hydraulic Properties in Space and Time: State of the Science -
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.
Development of a Common Water and Wind Erosion Model for Soil Conservation Planning -
Flanagan, D.C., Ascough II, J.C., Wagner, L.E. 2008. Development of a Common Water and Wind Erosion Model for Soil Conservation Planning. In: Proceedings of the Agro-Environment Symposium, April 28-May 1, 2008, Antalya, Turkey. 2008 CDROM.
Tradeoff Analysis Between Economic Development and Climate Change Adaptation Strategies for River Nile Basin Water Resources -
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.
Insect Pests Models and Insecticide Application -
Ascough II, J.C., Fathelrahman, E.M., Mcmaster, G.S. 2008. Insect Pest Models and Insecticide Application. In: Jorgensen, S.E., Faith, B.D. editors. Ecological Models. Vol. (3) Encyclopedia of Ecology., 5 vols. Oxford, Elsevier. p. 1978-1985.
Using the Response Surface Method (RSM) for Economic and Environmental Tradeoffs Between Economics and Environment at the Farm Level Reprint Icon -
Ascough Ii, J.C., Fathelrahman, E.M., Hoag, D.L. 2007. Using the Response Surface Method (RSM) for Economic and Environmental Tradeoffs Between Economics and Environment at the Farm Level. Farming Systems Design 2007 Conference, Catania, Sicily, Italy. September 10-12, 2007. Symposium Proceedings p.164-165.
Stakeholder Payoff Matrix for Disparate Tradeoffs Reprint Icon -
Hoag, D., Ascough II, J.C., Fathelrahman, E.M., Keske, C.M. 2007. Stakeholder Payoff Matrix for Disparate Tradeoffs. Farming Systems Design 2007 Conference, Catania, Sicily, Italy, September 10-12,2007. Symposium Proceedings, Session 1.6, p150-151.
Ecological Models: Agricultural Models -
Ascough II, J.C., Ahuja, L.R., Mcmaster, G.S., Ma, L., Andales, A.A. 2008. Agricultural Models. In: Jorgensen, S.E., Faith, B.D.editors. Ecological Models. Vol. (1) Encyclopedia of Ecology., 5 vols. Oxford, Elsevier. p. 85-95.
Combining ARS Process-Based Water and Wind Erosion Prediction Technologies -
Flanagan, D.C., Frankenberger, J.R., Fox, F.A., Wagner, L.E., Ascough Ii, J.C. 2007. Combining ARS Process-Based Water and Wind Erosion Prediction Technologies. Soil Science Society of America Annual Meeting Abstracts, November 4-8, 2007, New Orleans, Louisiana. 2007 CDROM.
Developing Erosion Prediction Modeling Technology Using the Object Modeling System (OMS): Viability and Challenges -
Ascough Ii, J.C., Flanagan, D.C., David, O., Ahuja, L.R., Rojas, K.W. 2007. Developing Erosion Prediction Modeling Technology Using the Object Modeling System (OMS): Viability and Challenges. American Society of Agronomy Meetings, New Orleans, LA. November 4-8, 2007.
Evaluating EPIC-based Harvest Index Approach for Yield Prediction and Response to Soil Water Reprint Icon -
Mcmaster, G.S., Ascough Ii, J.C., Andales, A.A., Edmunds, D.A. 2007. Evaluating EPIC-based Harvest Index Approach for Yield Prediction and Response to Soil Water. ASA-CSSA-SSSA Annual Meeting, New Orleans, November 5,2007 (61-7).
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).
Evaluating GPFARM for No-Tillage Dryland Experimental Sites in Eastern Colorado Reprint Icon -
Ascough Ii, J.C., Mcmaster, G.S., Andales, A.A., Hansen, N.C., Ahuja, L.R., Sherrod, L.A. 2007. Evaluating GPFARM for No-Tillage Dryland Experimental Sites in Eastern Colorado. Transactions of the ASABE, 50(5):1565-1578.
Future Research Challenges for Incorporating Uncertainty in Environmental and Ecological Decision-Making -
Ascough II, J.C., Maier, H.R., Ravalco, J.K., Strudley, M.W. 2008. Future Research Challenges for Incorporating Uncertainty in Environmental and Ecological Decision-Making. Ecological Modeling. 219(3-4):383-399.
Uncertainty in Environmental Decision-Making: Issues, Challenges and Future Directions -
Maier, H.R., Ascough Ii, J.C., Wattenbach, M., Renschler, C.S., Labiosa, W.B., Ravalico, J.K. 2008. Uncertainty in Environmental Decision-Making: Issues, Challenges and Future Directions. Environmental Modeling & Software.
Integrated Modelling Frameworks for Environmental Assessment and Decision Support -
Rizzoli, A.E., Leavesley, G.H., Ascough Ii, J.C., Argent, R.M., Athanasiadis, I.N., Brilhante, V.C., Claeys, F.H., David, O., Donatelli, M., Gijsbers, P., Havlik, D., Kassahun, A., Krause, P., Quinn, N.W., Scholten, H., Sojda, R.S., Villa, F. 2008. Integrated Modelling Frameworks for Environmental Assessment and Decision Support. Environmental Modeling & Software.
Development of an integrated water and wind erosion model -
Flanagan, D.C., Ascough II, J.C., Wagner, L.E., Geter, W.F. 2006. Development of an integrated water and wind erosion model. American Geophysical Union. December 11-15, 2006, San Francisco, CA. 2006 CDROM.
GPFARM Evaluation Across a No-Till Dryland Agroecosystem Landscape Catena -
Ascough Ii, J.C., Andales, A.A., Mcmaster, G.S., Ahuja, L.R. 2006. Gpfarm evaluation across a no-till dryland agroecosystem landscape catena. ASA-CSSA-SSSA Annual Meeting Abstracts. Indianapolis, IN. 11/15/2006.
ANTIBIOTIC TRANSPORT VIA RUNOFF AND SOIL LOSS -
Davis, J.G., Truman, C.C., Kim, S.C., Ascough II, J.C., Carlson, K. 2006. Antibiotic transport via runoff and soil loss. Journal of Environmental Quality. 35:2250-2260.
RZWQM Simulated Effects Of Crop Rotation, Tillage, And Controlled Drainage On Crop Yield And Nitrate-N Loss In Drain Flow. -
Ma, L., Malone, R.W., Heilman, P., Jaynes, D.B., Ahuja, L.R., Saseendran, S.A., Kanwar, R.S., Ascough II, J.C. 2007. RZWQM simulated effects of crop rotation, tillage, and controlled drainage on crop yield and nitrate-n loss in drain flow. Geoderma 140(3):260-271. doi:10/1016/j/geoderma.2007.04.010.
SENSITIVITY OF TILE DRAINAGE FLOW AND CROP YIELD ON MEASURED AND CALIBRATED SOIL HYDRAULIC PROPERTIES -
Ma, L., Malone, R.W., Heilman, P., Ahuja, L.R., Meade, T.G., Anapalli, S.S., Ascough Ii, J.C., Kanwar, R.S. 2007. Sensitivity of tile drainage flow and crop yield on measured and calibrated soil hydraulic properties. Geoderma 140:3(2007) 284-296. Published on-line 5/16/2007. doi:10.1016/j.geoderma.2007.04.012
UNCERTAINTY IN ENVIRONMENTAL DECISION-MAKING: ISSUES, CHALLENGES AND FUTURE DIRECTIONS -
Maier, H.R., Ascough Ii, J.C. 2006. Uncertainty in environmental decision-making: issues, challenges and future directions. Environmental Modeling & Software.
PRACTICAL SENSITIVITY AND UNCERTAINTY ANALYSIS TECHNIQUES APPLIED TO AGRICULTURAL SYSTEMS MODELS -
Ascough Ii, J.C. 2006. Practical sensitivity and uncertainty analysis techniques applied to agricultural systems models. Meeting Abstract. IEMSS. Burlington, VT. July 9-13,2006.
SIMULATION MODELING OF LIMITED IRRIGATION CROPPING SYSTEMS IN THE SOUTH PLATTE RIVER BASIN -
Ascough Ii, J.C., Hansen, N.C. 2006. Simulation modeling of limited irrigation cropping systems in the south platte river basin. Soil and Water Conservation Society Annual Meeting. July 22-26, 2006. Keystone, Colorado.
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
AN IMPROVED AGRICULTURAL SYSTEM MODEL FOR SPACE-TIME SIMULATION OF AGRICULTURAL LANDSCAPE VARIABILITY -
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 -
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 -
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.
PRODUCERS, DECISION SUPPORT SYSTEMS, AND GPFARM: LESSONS LEARNED FROM A DECADE OF DEVELOPMENT -
Ascough Ii, J.C., Dunn, G.H., Mcmaster, G.S., Ahuja, L.R., Andales, A.A. 2005. Producers, decision support systems, and gpfarm: lessons learned from a decade of development. International Congress on Modeling and Simulation Proceedings.
MULTI-CROP PLANT GROWTH MODELING FOR AGRICULTURAL MODELS AND DECISION SUPPORT SYSTEMS -
Mcmaster, G.S., Ascough Ii, J.C., Edmunds, D.A., Andales, A.A., Wagner, L.E., Fox, F.A. 2005. Multi-crop plant growth modeling for agricultural models and decision support systems. International Congress on Modeling and Simulation Proceedings.
ENVIRONMENTAL AND ECONOMIC ANALYSIS OF SWITCHGRASS PRODUCTION FOR WATER QUALITY IMPROVEMENT AND ALTERNATIVE ENERGY USE IN NORTHEAST KANSAS -
Nelson, R.G., Ascough Ii, J.C., Langemeier, M.C. 2006. Environmental and economic analysis of switchgrass production for water quality improvement and alternative energy use in northeast kansas. Journal of Environmental Management. (2006). 79: 4 (336-347).
DEVELOPMENT OF A HILLSLOPE EROSION MODULE FOR THE OBJECT MODELING SYSTEM -
Flanagan, D.C., Ascough II, J.C., Geter, W.F., David, O. 2005. Development of a hillslope erosion module for the object modeling system. ASAE Annual International Meeting. Paper No. 05-2012. 1-11 pp.
SPATIAL WATER QUALITY MODELING FRAMEWORK DEVELOPMENT USING ARCGIS9 -
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.
ASSESSING THE POTENTIAL OF THE OBJECT MODELING SYSTEM (OMS) FOR EROSION PREDICTION MODELING -
Ascough II, J.C., Flanagan, D.C., David, O. 2005. Assessing the potential of the object modeling system (oms) for erosion prediction modeling. Proceedings 05-211. 2005 ASAE Annual International Meeting, Tampa, FL. July 17-20. http://asae/frymulti.com/techpapers.asp?confid=tfl2005.
DEVELOPMENT AND EVALUATION OF THE RZWQM-CROPGRO HYBRID MODEL FOR SOYBEAN PRODUCTION -
Ma, L., Hoogenboom, G., Ahuja, L.R., Nielsen, D.C., Ascough II, J.C. 2005.Development and evaluation of the RZWQM-CROPGRO hybrid model for soybean production. Agronomy Journal. 97:1172-1182.
DEVELOPMENT AND EVALUATION OF THE RZWQM-CERES-MAIZE HYBRID MODEL FOR MAIZE PRODUCTION -
Ma, L., Hoogenboom, G., Ahuja, L.R., Ascough Ii, J.C., Saseendran, S.A. 2006. Evaluation of the rzwqm-ceres-maize hybrid model for maize production. Agricultural Systems. 87(3): 274-295.
DECISION MAKING WITH ENVIRONMENTAL INDICES -
Hoag, D.L., Ascough Ii, J.C., Keske-Handley, C.G., Koontz, L.R. 2005. Decision making with environmental indices. Book Chapter. In: Burk, A.R. (Ed), New Trends in Ecology Research. Nova Science Publishers, Hauppauge, NY. Chapter 7, pg. 159-182. 2005.
DEVELOPING NATURAL RESOURCE MODELS USING THE OBJECT MODELING SYSTEM: FEASIBILITY AND CHALLENGES -
Ahuja, L.R., Ascough Ii, J.C., David, O. 2005. Developing natural resource models using the object modeling system: feasibility and challenges. Advances in Geosciences. 3:1-8, 2005.
MODELING SPATIAL VARIABILITY IN AGRICULTURE: THE AGSIMSGIS WATER QUALITY TOOL -
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.
PRACTICAL APPLICATION OF SENSITIVITY AND UNCERTAINTY ANALYSIS TECHNIQUES: LESSONS LEARNED WITH TWO AGRICULTURAL SYSTEM MODELS -
Ascough Ii, J.C., Ma, L. 2004. Practical application of sensitivity and uncertainty analysis techniques: lessons learned with two agricultural system models. Meeting Abstract. www.asa-cssa-ssa.org/anmeet. Seattle, WA. Oct.31-11/4/2004.
PRACTICAL APPLICATION OF SENSITIVITY AND UNCERTAINTY ANALYSIS TECHNIQUES: LESSONS LEARNED WITH TWO AGRICULTURAL SYSTEM MODELS -
Ascough Ii, J.C., Ma, L. 2004. Practical application of sensitivity and uncertainty analysis techniques: lessons learned with two agricultural system models. ASA-CSSA-SSSA Annual Meeting Abstracts. Oct. 31 - Nov. 4 2004.
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.
THE FUTURE OF SPATIAL MODELING AT GPSRU -
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 -
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.
DEVELOPING NATURAL RESOURCE MODELS USING THE OBJECT MODELING SYSTEM: FEASIBILITY AND CHALLENGES -
Ahuja, L.R., David, O., Ascough Ii, J.C. 2004. Developing natural resource models using the object modeling system: feasibility and challenges. Meeting Proceedings. International Environmental Modelling and Software Society (IEMSS) 2004 Conference - Complexity and Integrated Resources Management, Osnabruck, Germany. June 14-17, 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.
GPFARM PLANT MODEL PARAMETERS: COMPLICATIONS OF VARIETIES AND THE GENOTYPE X ENVIRONMENT INTERACTION IN WHEAT -
MCMASTER, G.S., ASCOUGH II, J.C., SHAFFER, M.J., DEER ASCOUGH, L.A., BYRNE, P.F., NIELSEN, D.C., HALEY, S.D., ANDALES, A.A., DUNN, G.H. GPFARM PLANT MODEL PARAMETERS: COMPLICATIONS OF VARIETIES AND THE GENOTYPE X ENVIRONMENT INTERACTION IN WHEAT. TRANSACTIONS OF THE AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS. 2003.
AGSIMGIS: INTEGRATED GIS AND AGRICULTURAL SYSTEM MODELING -
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.
GPFARM CYCLING OF CROP RESIDUES -
Shaffer, M.J., Bartling, P.N., Vigil, M.F., Mcmaster, G.S., Dunn, G.H., Ascough Ii, J.C., Ahuja, L.R. 2002. Gpfarm cycling of crop residues. American Society of Agronomy Meetings. Indianapolis, IN. November 10-14, 2002.
PARAMETERIZING GPFARM: AN AGRICULTURAL DECISION SUPPORT SYSTEM FOR INTEGRATING SCIENCE, ECONOMICS, RESOURCE USE, AND ENVIRONMENTAL IMPACTS -
Mcmaster, G.S., Ascough Ii, J.C., Shaffer, M.J., Byrne, P.F., Haley, S.D., Nielsen, D.C., Andales, A.A., Dunn, G.H., Weltz, M.A., Ahuja, L.R. 2002. Parameterizing gpfarm: an agricultural decision support system for integrating science, economics, resource use, and environmental impacts. International Society of Ecological Modeling Annual Meetings. IN: A.E. Rizzoli and A.J. Jakeman (Eds.), Integrated Assessment and Decision Support Proceedings of the 1st Biennial Meeting of the IEMSS. June 24-27, 2002, Lugano, Switzerland. Vol. 1, pg 72-77.
MULTICRITERIA SPATIAL DECISION SUPPORT SYSTEMS FOR AGRICULTURE: OVERVIEW, APPLICATIONS, AND FUTURE RESEARCH DIRECTIONS -
Ascough II, J.C., Rector, H.D., Hoag, D.L., Mcmaster, G.S., Vandenberg, B.C., Shaffer, M.J., Weltz, M.A., Ahuja, L.R. 2002. Multicriteria spatial decision support systems for agriculture: overview, applications, and future research directions. Environmental Modeling International Conference Proceedings. IN: A.E. Rizzoli and A.J. Jakeman (Eds.), Integrated Assessment and Decision Support Proceedings of the 1st Biennial Meeting of the IEMSS. June 24-27, 2002, Lugano, Switzerland. Vol. 3, pp. 175-180.
APPLICATION AND TESTING OF GPFARM: A FARM AND RANCH DECISION SUPPORT SYSTEMFOR EVALUATING ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY OF AGRICULTURAL ENTERPRISES -
Dunn, G.H., Weltz, M.A., Mcmaster, G.S., Ascough Ii, J.C., Shaffer, M.J., Palic, D.B., Vandenberg, B.C., Bartling, P.N., Edmunds, D.A., Hoag, D.L., Ahuja, L.R. 2002. Application and testing of gpfarm: a farm and ranch decision support systemfor evaluating economic and environmental sustainability of agricultural enterprises. Acta Horticulture (ISHS) 593:171-177. www.actahort.og/books/593/593_22.htm
THE IMPACT MATRIX APPROACH AND DECISION RULES TO ENHANCE INDEX DIMENSIONALITY, FLEXIBILITY AND REPRESENTATION -
HOAG, D.L., ASCOUGH II, J.C., ENGLER-PALMA, A. THE IMPACT MATRIX APPROACH AND DECISION RULES TO ENHANCE INDEX DIMENSIONALITY, FLEXIBILITY AND REPRESENTATION. JOURNAL OF ECOLOGICAL INDICATORS. 2(2002):161-168.
COMPUTER USE AND SATISFACTION BY GREAT PLAINS PRODUCERS: ORDERED LOGIT MODEL ANALYSIS -
ASCOUGH II, J.C., HOAG, D.L., MCMASTER, G.S., FRASIER, W.M. COMPUTER USE AND SATISFACTION BY GREAT PLAINS PRODUCERS: ORDERED LOGIT MODEL ANALYSIS. AGRONOMY JOURNAL. 94:1263-1269 (2002).
GPFARM: AN INTEGRATED DECISION SUPPORT SYSTEM FOR SUSTAINABLE GREAT PLAINS AGRICULTURE -
ASCOUGH II, J.C., HOAG, D.L., SHAFFER, M.J., MCMASTER, G.S., AHUJA, L.R. GPFARM: AN INTEGRATED DECISION SUPPORT SYSTEM FOR SUSTAINABLE GREAT PLAINS AGRICULTURE. MEETING ABSTRACT. 2002.
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.
TARGETING SOIL CONSERVATION POLICIES FOR SUSTAINABILITY: NEW EMPIRICAL EVIDENCE -
SUSTAINABLE SOIL MANAGEMENT: A FRAMEWORK FOR ANALYSIS -
POPP, J.H., HOAG, D.L., ASCOUGH II, J.C. SUSTAINABLE SOIL MANAGEMENT: A FRAMEWORK FOR ANALYSIS. MEETING ABSTRACT. 2002.
GPFARM SIMULATION OF SOIL NUTRIENT CYCLING UNDER MAIZE -
Shaffer, M.J., Yu, M., Bartling, P.N., Ho, N., Mcmaster, G.S., Ascough Ii, J.C., Ahuja, L.R., Weltz, M.A. 2001. Gpfarm simulation of soil nutrient cycling under maize. Agronomy Abstracts. American Society of Agronomy Meetings, October 2001.
CD-ROM Proceedings International Symposium on Erosion and Landscape Evolution (ISELE) -
Flanagan, D.C., Ascough II, J.C., Nieber, J.L. (Editors) 2011. CD-ROM Proceedings International Symposium on Erosion and Landscape Evolution (ISELE). In: Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE). 711P0311cd.
GPFARM:AN INTEGRATED DECISION SUPPORT SYSTEM FOR SUSTAINABLE GREAT PLAINS AGRICULTURE -
CHAPTER 7: THE WATER EROSION PREDICTION PROJECT (WEPP) MODEL -
SOIL EROSION FOR THE 21ST CENTURY -
USING THE GPFARM DSS FOR EVALUATING DRYLAND CROPPING SYSTEM PRODUCTION AND ECONOMICS IN THE WESTCENTRAL GREAT PLAINS -
2000 Annual Meetings Abstracts, American Society of Agronomy/Crop Science Society of America/Soil Science Society of America. Minneapolis, Minnesota, November 5-9, 2000. pp 22.
WILL FARMERS USE COMPUTERS FOR RESOURCE AND ENVIRONMENTAL MANAGEMENT? -
OBJECT-ORIENTED SIMULATION OF INTEGRATED WHOLE-FARM:GPFARM FRAMEWORK -
ROOT ZONE WATER QUALITY MODEL SENSITIVITY ANALYSIS USING MONTE CARLO SIMULATION -
USING THE ANALYTICAL HIERARCY PROCESS TO DETERMINE ECONOMIC AND ENVIRONMENT TRADEOFFS ON FARMS -
SCALE ISSUES IN MODELING AGROECOSYSTEMS: A REVIEW -
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 -
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.
FARM COMPUTER ADOPTION IN THE GREAT PLAINS -
COMPUTER USE IN AGRICULTURE: AN ANALYSIS OF GREAT PLAINS PRODUCERS -
ESTIMATING THE ECONOMIC BENEFITS OF UNIFORMITY-IMPROVING CAPITAL INVESTMENTS IN IRRIGATED CROP ENTERPRISES: IMPLICATIONS FOR PRODUCER PROFITS AND RESOURCE CONSERVATION -
A DYNAMIC ANALYSIS OF NITRATE LEACHING IN CORN PRODUCTION UNDER NON UNIFORMIRRIGATION CONDITIONS -
THE SURFACE IMPOUNDMENT ELEMENT FOR WEPP -
SPATIALLY VARIABLE HYDRODYNAMIC SIMULATION OF OVERLAND FLOW -
APPLICATION OF GENERIC CROP GROWTH MODEL TECHNOLOGY TO GREAT PLAINS CONSERVATION SYSTEMS -
Deer-Ascough, L.A., Mcmaster, G.S., Ascough Ii, J.C., Peterson, G.A. 1998. Application of generic crop growth model technology to great plains conservation systems. American Society of Agricultural Engineers Meetings Papers. Paper #98-2133.
HYDRAULIC SIMULATION TECHNIQUES INCORPORTED IN THE SURFACE IMPOUNDMENT OF WEPP -
CPIDS: A PLANT PARAMETER SELECTION PROGRAM FOR EROSION PREDICTION MODELING -
SUBJECTIVE EVALUATION OF DECISION SUPPORT SYSTEMS USING MULTIATTRIBUTE DECISION MAKING (MADM) -
THE WEPP WATERSHED MODEL: 1. MODEL DESCRIPTION -
THE WEPP WATERSHED MODEL: II. SENSITIVITY ANALYSIS TO WATERSHED DISCRETIZATION AND CHANNEL INPUT PARAMETERS -
THE WEPP WATERSHED MODEL: III. COMPARISONS TO MEASURED DATA -
VALIDATION OF THE HYDROLIC EVEALUATION OF LANDFILL PERFORMANCE (HELP) VERSION 3 MODEL FOR LANDFILL TEST CELLS IN MICHIGAN, UTAH, AND DELAWARE -
THE SURFACE IMPOUNDMENT ELEMENT FOR WEPP: PART II: SEDIMENTATION -
THE SURFACE IMPOUNDMENT ELEMENT FOR WEPP: PART I: HYDRAULIC SIMULATION -
THE WATER EROSION PREDICTION PROJECT (WEPP) MODELS FOR USE IN NATURAL RESOURCES MANAGEMENT -
WEPP WATERSHED MODEL TECHNOLOGY -
WATERSHED MODEL CHANNEL HYDROLOGY AND EROSION PROCESSES, CHAPTER 13 -
WEPP EROSION COMPONENT -
OVERVIEW OF THE WATER EROSION PREDICTION PROJECT EROSION MODEL, CHAPTER 1 -
THE GPFARM DECISION SUPPORT SYSTEM FOR WHOLE FARM/RANCH MANAGEMENT -
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