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Joint Research Center (JRC)
CO2MPAS

CO2 Model for PAssenger and commercial vehicles Simulation

Transportroad transportvehicle simulationCO2 from light duty vehicles

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?

yes
The model is regulated and its calibration is based on experimental data that are generated during the official vehicle certification test. Each new model version is released with a validation report that is available on the CO2MPAS Reports site.

Sensitivity analysis

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

yes
By the JRC the results were presented to the technical working group overlooking CO2MPAS development (see next point).

    Have model results been published in peer-reviewed articles?

    yes
    An ad-hoc technical working group was established by DG CLIMA during the development phase (comprised of industrial and independent stakeholders). Additional external validations are carried out on a yearly basis.

      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

        Model validation

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

        yes
        The model is used on a daily basis by type approval authorities across Europe. JRC receives continuous feedback on its operation. In addition to this a dedicated validation based on 50 light duty vehicles has taken place.

          Transparency

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

          This may include sources accessible upon subscription and/or payment

          Based on both publicly available and restricted-access sources

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

          Whether or not it implies a specific procedure or a fee

          no
          There is no underlying database. Input data to use the tool are technical vehicle information.

            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.

            no
            This is s part of the vehicle certification process.

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

              For instance: Dashboard, interactive interfaces...

              no

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

                Note this excludes IA reports.

                yes

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

                yes

                Is the model code open-source?

                yes
                It is a JRC developed open-source software. All sources are available online.

                Can the code be accessed upon request?

                not applicable