Ozone >> Observation
Verification of the Ozone forecasts
During each - summer or winter - forecast period, statistical indicators are computed, to compare pollutant forecast concentrations to available observation data - thus assessing the model capacity within PREV'AIR to forecast air quality. Every available measurements on the forecast period are taken into account. The statistics are computed separately for rural stations and suburban stations, for each lag of the daily forecast (from D-1 to D+2).
Scores on the ozone peak 
| Lag of the forecast | Rural stations |
Suburban stations |
|
|---|---|---|---|
| Observed mean (µg/m3) | D - 1 | (Nbr Obs: ) | (Nbr Obs:) |
| D + 0 | (Nbr Obs: ) | (Nbr Obs:) |
|
| D + 1 | (Nbr Obs: ) | (Nbr Obs:) |
|
| D + 2 | (Nbr Obs: ) | (Nbr Obs:) |
|
| Simulated mean (µg/m3) | D - 1 | ||
| D + 0 | |||
| D + 1 | |||
| D + 2 | |||
| Normalized Bias (%) | D - 1 | ||
| D + 0 | |||
| D + 1 | |||
| D + 2 | |||
| NMSE (%) | D - 1 | ||
| D + 0 | |||
| D + 1 | |||
| D + 2 | |||
| Correlation | D - 1 | ||
| D + 0 | |||
| D + 1 | |||
| D + 2 | |||
| E20% (%) | D - 1 | ||
| D + 0 | |||
| D + 1 | |||
| D + 2 |
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www.stations-hydro-medd.org IntroductionAir quality modeling
in PREV'AIRAir Quality forecasts in
the PREV'AIR SystemAnalysed MapsVerification Available observation dataInput Data to the PREV'AIR SystemRequest for the Provision of Air
Quality Numerical Simulation DataLe programme CarpateDétail de la PrévisionChronogramme Nitrogen dioxide Forecast Ozone ForecastAOT MODEL - AOT SATELLITES PM 2.5 Forecast PM 10 ForecastForecast Desert dust Analysed Ozone mapsAnalysed PM 10 maps Ozone Observation Nitrogen dioxide Observation PM 2.5 Observation PM 10 ObservationVerification of the Ozone forecastsVerification of the Nitrogen dioxide
forecastsVerification of the PM 10 forecastsBilan Annuel : GénéralitésDépassement de seuils en heuresDépassement de seuils en jourAOTsMoyenne des picsStatistiques O3Statistiques no2Examples of photochemical
pollution episodesExamples of particulate
pollution episodesAvertissementLiencontactThe partners in PREV'AIR
in PREV'AIRAir Quality forecasts in
the PREV'AIR SystemAnalysed MapsVerification Available observation dataInput Data to the PREV'AIR SystemRequest for the Provision of Air
Quality Numerical Simulation DataLe programme CarpateDétail de la PrévisionChronogramme Nitrogen dioxide Forecast Ozone ForecastAOT MODEL - AOT SATELLITES PM 2.5 Forecast PM 10 ForecastForecast Desert dust Analysed Ozone mapsAnalysed PM 10 maps Ozone Observation Nitrogen dioxide Observation PM 2.5 Observation PM 10 ObservationVerification of the Ozone forecastsVerification of the Nitrogen dioxide
forecastsVerification of the PM 10 forecastsBilan Annuel : GénéralitésDépassement de seuils en heuresDépassement de seuils en jourAOTsMoyenne des picsStatistiques O3Statistiques no2Examples of photochemical
pollution episodesExamples of particulate
pollution episodesAvertissementLiencontactThe partners in PREV'AIR