Metphomod - a Numerical Mesoscale Model for Simulation of Regional Photosmog in Complex Terrain: Model Description and Application During Pollumet 1993 (Switzerland)

Perego, S.

doi:10.1007/s007030050024

Cited by 37 publications

(12 citation statements)

References 36 publications

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“…A statistical analysis of aerological soundings from Payerne showed that transport distances during summer smog episodes are normally only around 50 to 100 km/day at the surface and 150 to 200 km/day at 1000 m asl, with somewhat higher values for the residual layer during the night (Jeannet et al, 1996). Hence, a large fraction (around 20 ppb) of the ozone peaks observed on the Swiss Plateau during summer episodes must be produced in situ over the Swiss Plateau (Neininger and Dommen, 1996), as was also supported by experimental and model studies (Dommen et al, 1995;Perego, 1999). It was shown that ozone formation in summer on the rural Swiss Plateau is mainly NO x limited (Dommen et al, 1995).…”

Section: The Study Areamentioning

confidence: 94%

Two case studies on the interaction of large-scale transport, mesoscale photochemistry, and boundary-layer processes on the lower tropospheric ozone dynamics in early spring

et al. 2001

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Abstract. The vertical distribution of ozone in the lower troposphere over the Swiss Plateau is investigated in detail for two episodes in early spring (February 1998 andMarch 1999). Profile measurements of boundary-layer ozone performed during two field campaigns with a tethered balloon sounding system and a kite are investigated using regular aerological and ozone soundings from a nearby site, measurements from monitoring stations at various altitudes, backward trajectories, and synoptic analyses of meteorological fields. Additionally, the effect of in situ photochemistry was estimated for one of the episodes employing the Metphomod Eulerian photochemical model. Although the meteorological situations were completely different, both cases had elevated layers with high ozone concentrations, which is not untypical for late winter and early spring. In the February episode, the highest ozone concentrations of 55 to 60 ppb, which were found at around 1100 m asl, were partly advected from Southern France, but a considerable contribution of in situ photochemistry is also predicted by the model. Below that elevation, the local chemical sinks and surface deposition probably overcompensated chemical production, and the vertical ozone distribution was governed by boundarylayer dynamics. In the March episode, the results suggest that ozone-rich air parcels, probably of stratospheric or upper tropospheric origin, were advected aloft the boundary layer on the Swiss Plateau.Key words. Atmospheric composition and structure (pollution -urban and regional; troposphere -composition andCorrespondence to: S. Brönnimann (broenn@giub.unibe.ch) chemistry) -Meteorology and atmospheric dynamics (mesoscale meteorology)

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Section: The Study Areamentioning

confidence: 94%

Two case studies on the interaction of large-scale transport, mesoscale photochemistry, and boundary-layer processes on the lower tropospheric ozone dynamics in early spring

et al. 2001

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“…This model has both a meteorological module, which calculates wind, potential temperature and humidity fields, as well as an atmospheric chemistry module to compute transport and chemical reactions (Perego, 1999). The chemical module is based on the Regional Atmospheric Chemical Mechanism (RACM), a lumped species mechanism (Stockwell et al, 1997).…”

Section: Modeling Approachmentioning

confidence: 99%

“…In spite of the need of such models to assess abatement scenarios, remarkably few models are operational and further more are not often validated based on field measurements (Russel and Denis, 2000). In this context, here we present temporal ozone formation obtained from the METPHOMOD model (Perego, 1999) in conjunction with an intensive field campaign applied in the Grenoble region during July 1999.…”

Section: Introductionmentioning

confidence: 99%

An investigation of ozone and planetary boundary layer dynamics over the complex topography of Grenoble combining measurements and modeling

et al. 2003

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Abstract. This paper concerns an evaluation of ozone (O 3 ) and planetary boundary layer (PBL) dynamics over the complex topography of the Grenoble region through a combination of measurements and mesoscale model (METPHO-MOD) predictions for three days, during July 1999. The measurements of O 3 and PBL structure were obtained with a Differential Absorption Lidar (DIAL) system, situated 20 km south of Grenoble at Vif (310 m ASL). The combined lidar observations and model calculations are in good agreement with atmospheric measurements obtained with an instrumented aircraft (METAIR). Ozone fluxes were calculated using lidar measurements of ozone vertical profiles concentrations and the horizontal wind speeds measured with a Radar Doppler wind profiler (DEGREANE. The ozone flux patterns indicate that the diurnal cycle of ozone production is controlled by local thermal winds. The convective PBL maximum height was some 2700 m above the land surface while the nighttime residual ozone layer was generally found between 1200 and 2200 m. Finally we evaluate the magnitude of the ozone processes at different altitudes in order to estimate the photochemical ozone production due to the primary pollutants emissions of Grenoble city and the regional network of automobile traffic.

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“…Description du modèle Le modèle employé pour cette étude est le modèle METPHOMOD [3]. C'est un modèle eulérien tridimensionnel utilisé pour le calcul d'épisodes de forte pollution en photo-oxydants dans les régions montagneuses.…”

Section: Modélisationunclassified

“…Da ns ce trava il , le modèl e M ET eoro log ica l PHOtochemistry MODel (METPHOMOD) [3], couplé au mécan isme c him iq ue Rea ct iv Atmospheri c Chemistry Mechanism (RACM) [4], simule la formation d'ozone sur le Y grenoblois. Ces résultats sont utilisés pour étud ie r la dispersion spatio-temporelle du panache des photo-oxydants et leur distribution verticale en fonctio n du régime de vent.…”

Section: Introductionunclassified

Etude d’un épisode photochimique à l’aide d’un modèle méso-échelle et de mesures intensives sur la région de Grenoble

Couach¹,

Balin²,

Jiménez³

et al. 2002

Pollution Atmosphérique

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Metphomod - a Numerical Mesoscale Model for Simulation of Regional Photosmog in Complex Terrain: Model Description and Application During Pollumet 1993 (Switzerland)

Cited by 37 publications

References 36 publications

Two case studies on the interaction of large-scale transport, mesoscale photochemistry, and boundary-layer processes on the lower tropospheric ozone dynamics in early spring

Two case studies on the interaction of large-scale transport, mesoscale photochemistry, and boundary-layer processes on the lower tropospheric ozone dynamics in early spring

An investigation of ozone and planetary boundary layer dynamics over the complex topography of Grenoble combining measurements and modeling

Etude d’un épisode photochimique à l’aide d’un modèle méso-échelle et de mesures intensives sur la région de Grenoble

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