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Title:   Author  item
                                            Ma, Liwangitem
                                            Ahuja, Lajpatitem
                                            SASEENDRAN, S - Colorado State Universityitem
                                            Malone, Robert

                                                         - *Rob*item
                                            Green, Timothyitem
                                            NOLAN, B - Us Geological Survey (USGS)item
                                            Bartling, Patriciaitem
                                            Flerchinger, Geralditem
                                            BOOTE, K - University Of Floridaitem
                                            HOOGENBOOM, G - University Of Georgia
  Submitted to: Soil Science Society of America Special Publication  Book Chapter
                                    Publication Type: Book / Chapter
                                    Publication Acceptance Date: 11/15/2011
                                    Publication  Date: 12/15/2011
                                    Citation: 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.Interpretive Summary: Use of agricultural system models in field research requires a full understanding of both the model and the system it simulates. This chapter provided a protocol on how to parameterize the USDA-ARS, Root Zone Water Quality Model (RZWQM2). It summarized input data requirements of soil, weather, and plant as well as minimum data needed to calibrate the model. Calibration of each component or process was illustrated along with possible adjustable parameters. An iterative procedure for model calibration was also emphasized in the chapter. Difficulties in model application were presented along with possible solutions. However, the steps for model calibration were still in the trial and error mode and can vary from application to application. Model users should benefit from the materials in the book chapter by combining them with those in the RZWQM2 user manual released with the model.
                                Technical Abstract: Use of agricultural system models in field research requires a full understanding of both the model and the system it simulates. Since the 1960s, agricultural system models have increased tremendously in their complexity due to greater understanding of the processes simulated, their application to real world problems, and acceleration of modern computing power. As a result the parameterization of a system model is now more complex, requiring more input variables and providing more outputs to verify. This chapter provided a protocol on how to parameterize the USDA-ARS, Root Zone Water Quality Model (RZWQM2). It summarized input data requirements of soil, weather, and plant as well as minimum data needed to calibrate the model. Calibration of each component or process was illustrated along with possible adjustable parameters. An iterative procedure for model calibration was also emphasized in the chapter. Difficulties in model application were presented along with possible solutions. However, the steps for model calibration were still in the trial and error mode and can vary from application to application. Model users should benefit from the materials in the book chapter by combining them with those in the RZWQM2 user manual released with the model.


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