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A performance evaluation of chemical transport models in the po valley- Italy

pubblicazioni - Articolo

A performance evaluation of chemical transport models in the po valley- Italy

valley- Italy Marco Deserti(1), Giovanni Bonafè(1), Enrico Minguzzi(1), Michele Stortini(1), Stefano Bande(2), Elisabetta Angelino(3), Matteo Paolo Costa(3), Giuseppe Fossati(3), Edoardo Peroni(3), Giordano Pession(4), Fabio Dalan(5), Silvia Pillon(5), Claudio Carnevale(6), Giovanna Finzi(6), Enrico Pisoni(6),Guido Pirovano(7), Marco Bedogni(8) 7th International Conference on Air Quality – Science and Application Istanbul, 24-27 Marzo 2009 PRESENTAZIONE POWER POINT (1) ARPA EMILIA ROMAGNA (2) ARPA PIEMONTE (3) ARPA LOMBARDIA (4) ARPA VALLE D’AOSTA (5) ARPA VENETO (6) DEA, UNIVERSITÀ DEGLI STUDI DI BRESCIA (7) CESIRICERCA S.P.A. (8) MOBILITY AND ENVIRONMENT AGENCY OF MILAN Po Valley is a large non attaining zone for EU air quality standards. Chemical transport models are a main tool to prepare plans to reach target pollutants concentrations. This work presents the results of a model evaluation and intercomparison exercise supported by the National Italian Environmental Agency and performed by regional agencies, local authorities and research groups, aimed to assess state of the art of the models’ skill. Four CTMs with seven different set up configurations, were applied to a common data set, which includes emissions, meteorology and BCs. The comparison with observations shows that PM10 concentrations are underestimated, nevertheless the correlation with observations is rather good. Ozone summer concentration is generally well reproduced, with a slightly overestimation. Models responses are more scattered for NO2. Extreme values are not well captured. Concentration fields simulated by models generally show similar features and indicate the same areas as critical for pollution

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