Regional modeling of carbonaceous aerosols over Europe—focus on secondary organic aerosols

Bessagnet, Bertrand; Menut, Laurent; Curci, Gabriele; Hodzic, Alma; Guillaume, Bruno; Liousse, Catherine; Moukhtar, S.; Pun, Betty K.; Seigneur, Christian; Schulz, Mıchael

doi:10.1007/s10874-009-9129-2

Cited by 170 publications

(147 citation statements)

References 94 publications

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“…The EC and OC emissions are calculated from PM25 by using the method proposed by Builtjes (2003). The conversion factor used to convert the emissions of OC to OM is 1.6 (Bessagnet et al, 2008).…”

Section: Experiments Setupmentioning

confidence: 99%

Sensitivity of feedback effects in CBMZ/MOSAIC chemical mechanism

José

Pérez

Balzarini

et al. 2015

Atmospheric Environment

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a bstr a ctTo investigate the impact of the aerosol effects on meteorological variables and pollutant concentrations two simulations with the WRF-Chem model have been performed over Europe for year 2010. We have performed a baseline simulation without any feedback effects and a second simulation including the direct as well as the indirect aerosol effect. The paper describes the full configuration of the model, the simulation design, special impacts and evaluation. Although low aerosol particle concentrations are detected, the inclusion of the feedback effects results in an increase of solar radiation at the surface over cloudy areas (North-West, including the Atlantic) and decrease over more sunny locations (SouthEast). Aerosol effects produce an increase of the water vapor and decrease the planet boundary layer height over the whole domain except in the Sahara area, where the maximum particle concentrations are detected. Significant ozone concentrations are found over the Mediterranean area. Simulated feedback effects between aerosol concentrations and meteorological variables and on pollutant distributions strongly depend on the aerosol concentrations and the clouds. Further investigations are necessary with higher aerosol particle concentrations. WRF-Chem variables are evaluated using available hourly ob-servations in terms of performance statistics. Standardized observations from the ENSEMBLE system webinterface were used. The research was developed under the second phase of Air Quality Model Evaluation International Initiative (AQMEII). WRF-Chem demonstrates its capability in capturing tem-poral and spatial variations of the major meteorological variables and pollutants, except the wind speed over complex terrain. The wind speed bias may affect the accuracy in the chemical predictions (NO2, SO2). The analysis of the correlations between simulated data sets and observational data sets indicates that the simulation with aerosol effects performs slightly better. These results indicate potential importance of the aerosol feedback effects and an urgent need to further improve the representations in current atmospheric models to reduce uncertainties at all scales.

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Section: Experiments Setupmentioning

confidence: 99%

Sensitivity of feedback effects in CBMZ/MOSAIC chemical mechanism

José

Pérez

Balzarini

et al. 2015

Atmospheric Environment

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“…This model et al (1997) parameterizes the bulk effect of changing environmental conditions using three time-dependent input variables specified at the top of the canopy: temperature (T, K), radiation (PPFD, mmol m 2 s 1 ), and foliage density (LAI, m 2 m À2 ) (Bessagnet et al, 2009). Therefore, for any given species, the emissions rate (ER, mg m 2 h 1 ) is calculated as:…”

Section: The Coupling Between Chimere and Orchideementioning

confidence: 99%

“…In the original CHIMERE version, the leaf area index (LAI) database is provided as a monthly mean product derived from MODIS observations, referred to base year 2000 (Bessagnet et al, 2009). In the coupled version CHIMERE uses the daily LAI values directly computed by ORCHIDEE to account for biogenic and NO emissions (Fig.…”

Section: The Coupling Between Chimere and Orchideementioning

confidence: 99%

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Impact of tropospheric ozone on the Euro-Mediterranean vegetation

Anav

Menut

Khvorostyanov

et al. 2011

Global Change Biology

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The impact of ozone (O 3 ) on European vegetation is largely under-investigated, despite huge areas of Europe are exposed to high O 3 levels and which are expected to increase in the next future. We studied the potential effects of O 3 on photosynthesis and leaf area index (LAI) as well as the feedback between vegetation and atmospheric chemistry using a land surface model (ORCHIDEE) at high spatial resolution (30 km) coupled with a chemistry transport model (CHIMERE) for the whole year 2002. Our results show that the effect of tropospheric O 3 on vegetation leads to a reduction in yearly gross primary production (GPP) of about 22% and a reduction in LAI of 15-20%. Larger impacts have been found during summer, when O 3 reaches higher concentrations. During these months the maximum GPP decrease is up to 4 g C m À2 day À1 , and the maximum LAI reduction is up to 0.7 m 2 m À2 . Since CHIMERE uses the LAI computed by ORCHIDEE to estimate the biogenic emissions, a LAI reduction may have severe implications on the simulated atmospheric chemistry. We found a large change in O 3 precursors that however leads to small changes in tropospheric O 3 concentration, while larger changes have been found for surface NO 2 concentrations.

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“…The majority of CTMs are offline models meaning that the meteorology is calculated prior to the chemistry such as CHIMEREv4.5 (Bessagnet et al, 2008;Pay et al, 2010), CMAQ (Matthias, 2008) or EMEP (Simpson et al, 2012;van Loon et al, 2007). Usually, the meteorology for these models is available at a 1 h, 3 h or 6 h resolution.…”

Section: Introductionmentioning

confidence: 99%

Application of WRF-Chem to forecasting PM<SUB align="right">10 concentration over Poland

Werner

Kryza

Ojrzyńska

et al. 2015

IJEP

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Abstract:The meteorological and chemical transport model WRF-Chem was implemented to forecast PM 10 concentrations over Poland. WRF-Chem version 3.5 was configured with three one-way nested domains using the GFS meteorological data and the TNO MACC II emissions. The 48 hour forecasts were run for each day of the winter and summer period of 2014 and there is only a small decrease in model performance for winter with respect to forecast lead time. The model in general captures the variability in observed PM 10 concentrations for most of the stations. However, for some locations and specific episodes, the model performance is poor and the results cannot yet be used by official authorities. We argue that a higher resolution sector-based emission data will be helpful for this analysis in connection with a focus on planetary boundary layer processes in WRF-Chem and their impact on the initial distribution of emissions on both time and space.

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Regional modeling of carbonaceous aerosols over Europe—focus on secondary organic aerosols

Abstract: In this study, an improved and complete secondary organic aerosols (SOA) chemistry scheme was implemented in the CHIMERE model. The implementation of isoprene chemistry for SOA significantly improves agreement between long B. Bessagnet (B)

Cited by 170 publications

References 94 publications

Sensitivity of feedback effects in CBMZ/MOSAIC chemical mechanism

Sensitivity of feedback effects in CBMZ/MOSAIC chemical mechanism

Impact of tropospheric ozone on the Euro-Mediterranean vegetation

Application of WRF-Chem to forecasting PM<SUB align="right">10 concentration over Poland

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