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Joint Research Center (JRC)
GREEN

Geospatial Regression Equation for European Nutrient losses

ΟtherEnvironmentagriculturewaternitrogenwastewaterphosphorus

Quality & Transparency

Quality

Model uncertainties

Models are by definition affected by uncertainties (in input data, input parameters, scenario definitions, etc.). Have the model uncertainties been quantified? Are uncertainties accounted for in your simulations?

no
The model is occasionally calibrated depending on the availability of data. Calibration provides an indication of the error associated to the model in predicting loads and concentrations.

    Sensitivity analysis

    Sensitivity analysis helps identifying the uncertain inputs mostly responsible for the uncertainty in the model responses. Has the model undergone sensitivity analysis?

    no
    The model, insofar as spatially distributed, is sensitive to the input emissions. Sensitivity analysis is only carried out for model parameters, and not on data inputs.

      Have model results been published in peer-reviewed articles?

      yes

        Has the model formally undergone scientific review by a panel of international experts?

        Please note that this does not refer to the cases when model results were validated by stakeholders.

        no
        Only in the context of the scientific peer review of journal papers.

          Model validation

          Has model validation been done? Have model predictions been confronted with observed data (ex-post)?

          yes
          The model has been extensively compared with measured N and P concentration data and to other model outputs, as documented in the references provided.

            Transparency

            To what extent do input data come from publicly available sources?

            This may include sources accessible upon subscription and/or payment

            Entirely based on publicly available sources

            Is the full model database as such available to external users?

            Whether or not it implies a specific procedure or a fee

            no
            (To be made available with the latest release)

              Have model results been presented in publicly available reports?

              Note this excludes IA reports.

              yes

              Have output datasets been made publicly available?

              Note this could also imply a specific procedure or a fee.

              yes

              Is there any user friendly interface presenting model results that is accessible to the public?

              For instance: Dashboard, interactive interfaces...

              yes

              Has the model been documented in a publicly available dedicated report or a manual?

              Note this excludes IA reports.

              yes
              The model does not require a user’s manual. A full description of the model can be found in Grizzetti et al. (2021). The R implementation package includes a vignette that can be used for guidance.

              Is there a dedicated public website where information about the model is provided?

              no

                Is the model code open-source?

                yes
                An R implementation of the code (GREENeR) is publicly available.

                Can the code be accessed upon request?

                not applicable