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Discussion papers | Copyright
https://doi.org/10.5194/gmd-2018-154
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Model description paper 30 Jul 2018

Model description paper | 30 Jul 2018

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Geoscientific Model Development (GMD).

OLYMPUS v1.0: Development of an integrated air pollutant and GHG urban emissions model – Methodology and calibration over the greater Paris

Arthur Elessa Etuman and Isabelle Coll Arthur Elessa Etuman and Isabelle Coll
  • Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), UMR CN RS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace (IPSL), Créteil, France

Abstract. Air pollutants and greenhouse gases have many effects on health, economy, urban climate and atmospheric environment. At the city level, the transport and heating sectors contribute significantly to air pollution. In order to quantify the impact of urban policies on anthropogenic air pollutants, the main processes leading to emissions need to be understood: they mainly include mobility for work and leisure and household behavior, themselves impacted by a variety of social parameters. In this context, the Olympus modeling platform has been designed for environmental decision support. It generates a synthetic population of individuals and defines the mobility of each individual in the city through an activity-based approach of the travel demand. The model then spatializes road traffic taking into account congestion on the road network. It also includes a module that estimates the energy demand of the territory by calculating the unit energy consumption of households and the tertiary sector. Finally, the emissions associated with all the modeled activities are calculated using the COPERT emission factors for the traffic, and the European Environmental Agency (EEA) methodology for heating-related combustions. The comparison of emissions with AIRPARIF's regional inventory shows discrepancies that are consistent with differences in assumptions and input data, mainly in the sense of underestimation. The methodological choices, as well as the potential ways of improvement, including the refinement of traffic congestion modeling and of the transport of goods, are discussed.

Arthur Elessa Etuman and Isabelle Coll
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Arthur Elessa Etuman and Isabelle Coll
Arthur Elessa Etuman and Isabelle Coll
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Short summary
OLYMPUS is an urban emissions model of air pollutants and greenhouse gases at the city level. This modeling platform was developed to quantify the impact of urban policies on anthropogenic air pollutants by integrating household behavior as well as energy consumption in the residential and tertiary sector.
OLYMPUS is an urban emissions model of air pollutants and greenhouse gases at the city level....
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