Effects of two different biogenic emission models on modelled ozone and aerosol concentrations in Europe
Biogenic volatile organic compound (BVOC) emissions are one of the essential inputs for chemical transport models (CTMs), but their estimates are associated with large uncertainties, leading to significant influence on air quality modelling. This study aims to investigate the effects of using different BVOC emission models on the performance of a CTM in simulating secondary pollutants, i.e. ozone, organic, and inorganic aerosols. European air quality was simulated for the year 2011 by the regional air quality model Comprehensive Air Quality Model with Extensions (CAMx) version 6.3, using BVOC emissions calculated by two emission models: the Paul Scherrer Institute (PSI) model and the Model of Emissions of Gases and Aerosol from Nature (MEGAN) version 2.1. Comparison of isoprene and monoterpene emissions from both models showed large differences in their general amounts, as well as their spatial distribution in both summer and winter. MEGAN produced more isoprene emissions by a factor of 3 while the PSI model generated 3 times the monoterpene emissions in summer, while there was negligible difference (∼4 %) in sesquiterpene emissions associated with the two models. Despite the large differences in isoprene emissions (i.e. 3-fold), the resulting impact in predicted summertime ozone proved to be minor (<10 %; MEGAN O3 was higher than PSI O3 by ∼7 ppb). Comparisons with measurements from the European air quality database (AirBase) indicated that PSI emissions might improve the model performance at low ozone concentrations but worsen performance at high ozone levels (>60 ppb). A much larger effect of the different BVOC emissions was found for the secondary organic aerosol (SOA) concentrations. The higher monoterpene emissions (a factor of ∼3) by the PSI model led to higher SOA by ∼110 % on average in summer, compared to MEGAN, and lead to better agreement between modelled and measured organic aerosol (OA): the mean bias between modelled and measured OA at nine measurement stations using Aerodyne aerosol chemical speciation monitors (ACSMs) or Aerodyne aerosol mass spectrometers (AMSs) was reduced by 21 %–83 % at rural or remote stations. Effects on inorganic aerosols (particulate nitrate, sulfate, and ammonia) were relatively small (<15 %).
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Copernicus Publications
2019-03-22
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Subjects: | Isoprene, Volatile organic compound, BVOC emissions, |
Online Access: | http://hdl.handle.net/10261/200612 http://dx.doi.org/10.13039/501100000780 |
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Isoprene Volatile organic compound BVOC emissions Isoprene Volatile organic compound BVOC emissions |
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Isoprene Volatile organic compound BVOC emissions Isoprene Volatile organic compound BVOC emissions Jiang, Jianhui Aksoyoglu, Sebnem A. Ciarelli, Giancarlo Oikonomakis, Emmanouil El-Haddad, Imad Canonaco, Francesco O'Dowd, Colin D. Ovadnevaite, Jurgita Minguillón, María Cruz Baltensperger, Urs Prévôt, André S. H. Effects of two different biogenic emission models on modelled ozone and aerosol concentrations in Europe |
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Biogenic volatile organic compound (BVOC) emissions are one of the essential inputs for chemical transport models (CTMs), but their estimates are associated with large uncertainties, leading to significant influence on air quality modelling. This study aims to investigate the effects of using different BVOC emission models on the performance of a CTM in simulating secondary pollutants, i.e. ozone, organic, and inorganic aerosols. European air quality was simulated for the year 2011 by the regional air quality model Comprehensive Air Quality Model with Extensions (CAMx) version 6.3, using BVOC emissions calculated by two emission models: the Paul Scherrer Institute (PSI) model and the Model of Emissions of Gases and Aerosol from Nature (MEGAN) version 2.1. Comparison of isoprene and monoterpene emissions from both models showed large differences in their general amounts, as well as their spatial distribution in both summer and winter. MEGAN produced more isoprene emissions by a factor of 3 while the PSI model generated 3 times the monoterpene emissions in summer, while there was negligible difference (∼4 %) in sesquiterpene emissions associated with the two models. Despite the large differences in isoprene emissions (i.e. 3-fold), the resulting impact in predicted summertime ozone proved to be minor (<10 %; MEGAN O3 was higher than PSI O3 by ∼7 ppb). Comparisons with measurements from the European air quality database (AirBase) indicated that PSI emissions might improve the model performance at low ozone concentrations but worsen performance at high ozone levels (>60 ppb). A much larger effect of the different BVOC emissions was found for the secondary organic aerosol (SOA) concentrations. The higher monoterpene emissions (a factor of ∼3) by the PSI model led to higher SOA by ∼110 % on average in summer, compared to MEGAN, and lead to better agreement between modelled and measured organic aerosol (OA): the mean bias between modelled and measured OA at nine measurement stations using Aerodyne aerosol chemical speciation monitors (ACSMs) or Aerodyne aerosol mass spectrometers (AMSs) was reduced by 21 %–83 % at rural or remote stations. Effects on inorganic aerosols (particulate nitrate, sulfate, and ammonia) were relatively small (<15 %). |
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European Commission |
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European Commission Jiang, Jianhui Aksoyoglu, Sebnem A. Ciarelli, Giancarlo Oikonomakis, Emmanouil El-Haddad, Imad Canonaco, Francesco O'Dowd, Colin D. Ovadnevaite, Jurgita Minguillón, María Cruz Baltensperger, Urs Prévôt, André S. H. |
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Isoprene Volatile organic compound BVOC emissions |
author |
Jiang, Jianhui Aksoyoglu, Sebnem A. Ciarelli, Giancarlo Oikonomakis, Emmanouil El-Haddad, Imad Canonaco, Francesco O'Dowd, Colin D. Ovadnevaite, Jurgita Minguillón, María Cruz Baltensperger, Urs Prévôt, André S. H. |
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Jiang, Jianhui |
title |
Effects of two different biogenic emission models on modelled ozone and aerosol concentrations in Europe |
title_short |
Effects of two different biogenic emission models on modelled ozone and aerosol concentrations in Europe |
title_full |
Effects of two different biogenic emission models on modelled ozone and aerosol concentrations in Europe |
title_fullStr |
Effects of two different biogenic emission models on modelled ozone and aerosol concentrations in Europe |
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Effects of two different biogenic emission models on modelled ozone and aerosol concentrations in Europe |
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effects of two different biogenic emission models on modelled ozone and aerosol concentrations in europe |
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Copernicus Publications |
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2019-03-22 |
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http://hdl.handle.net/10261/200612 http://dx.doi.org/10.13039/501100000780 |
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1777669355429953536 |
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dig-idaea-es-10261-2006122022-03-23T07:28:27Z Effects of two different biogenic emission models on modelled ozone and aerosol concentrations in Europe Jiang, Jianhui Aksoyoglu, Sebnem A. Ciarelli, Giancarlo Oikonomakis, Emmanouil El-Haddad, Imad Canonaco, Francesco O'Dowd, Colin D. Ovadnevaite, Jurgita Minguillón, María Cruz Baltensperger, Urs Prévôt, André S. H. European Commission Minguillón, María Cruz [0000-0002-5464-0391] Isoprene Volatile organic compound BVOC emissions Biogenic volatile organic compound (BVOC) emissions are one of the essential inputs for chemical transport models (CTMs), but their estimates are associated with large uncertainties, leading to significant influence on air quality modelling. This study aims to investigate the effects of using different BVOC emission models on the performance of a CTM in simulating secondary pollutants, i.e. ozone, organic, and inorganic aerosols. European air quality was simulated for the year 2011 by the regional air quality model Comprehensive Air Quality Model with Extensions (CAMx) version 6.3, using BVOC emissions calculated by two emission models: the Paul Scherrer Institute (PSI) model and the Model of Emissions of Gases and Aerosol from Nature (MEGAN) version 2.1. Comparison of isoprene and monoterpene emissions from both models showed large differences in their general amounts, as well as their spatial distribution in both summer and winter. MEGAN produced more isoprene emissions by a factor of 3 while the PSI model generated 3 times the monoterpene emissions in summer, while there was negligible difference (∼4 %) in sesquiterpene emissions associated with the two models. Despite the large differences in isoprene emissions (i.e. 3-fold), the resulting impact in predicted summertime ozone proved to be minor (<10 %; MEGAN O3 was higher than PSI O3 by ∼7 ppb). Comparisons with measurements from the European air quality database (AirBase) indicated that PSI emissions might improve the model performance at low ozone concentrations but worsen performance at high ozone levels (>60 ppb). A much larger effect of the different BVOC emissions was found for the secondary organic aerosol (SOA) concentrations. The higher monoterpene emissions (a factor of ∼3) by the PSI model led to higher SOA by ∼110 % on average in summer, compared to MEGAN, and lead to better agreement between modelled and measured organic aerosol (OA): the mean bias between modelled and measured OA at nine measurement stations using Aerodyne aerosol chemical speciation monitors (ACSMs) or Aerodyne aerosol mass spectrometers (AMSs) was reduced by 21 %–83 % at rural or remote stations. Effects on inorganic aerosols (particulate nitrate, sulfate, and ammonia) were relatively small (<15 %). Acknowledgements. We would like to thank the TNO for providing anthropogenic emissions, the European Centre for Medium-Range Weather Forecasts (ECMWF) for the access to the meteorological data, the European Environmental Agency (EEA) for the air quality data, and the National Aeronautics and Space Administration (NASA) and its data-contributing agencies (NCAR, UCAR) for the TOMS and MODIS data, the global air quality model data, and the TUV model. Simulations of WRF and CAMx models were performed at the Swiss National Supercomputing Centre (CSCS). We thank the EBAS database of the Norwegian Institute for Air Research (NILU) for the measurement data of isoprene concentration. We are grateful to RAMBOLL for the valuable support for CAMx. We thank the ACSM/AMS data providers, namely Stefania Gilardoni for the Bologna and San Pietro Capofiume stations, Nicolas Marchand and the MASSALYA instrumental platform (https://lce.univ-amu.fr/en/massalya, last access: 12 March 2019 for Marseille, Olivier Favez (INERIS) and the whole SIRTA team for measurements conducted in the Paris area in the frame of the EU FP7 ACTRIS programme under the grant agreement no. 262254, Kalliopi Florou for Finokalia, and Liqing Hao and Annele Virtanen for SMEAR II Hyytiälä. EPA-Ireland (AEROSOURCE, 2016-CCRP-MS-31) is acknowledged, as well as EGAR group from IDAEA-CSIC (special mention to Anna Ripoll and An-drés Alastuey) and Generalitat de Catalunya (AGAUR 2017 SGR41). María Cruz Minguillón acknowledges the Ramón y Cajal fellowship awarded by the Spanish Ministry of Economy, Industry and Competitiveness. Peer reviewed 2020-02-14T06:28:49Z 2020-02-14T06:28:49Z 2019-03-22 artículo http://purl.org/coar/resource_type/c_6501 Atmospheric Chemistry and Physics 19 (6): 3747-3768 (2019) http://hdl.handle.net/10261/200612 10.5194/acp-19-3747-2019 http://dx.doi.org/10.13039/501100000780 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/262254 Publisher's version https://doi.org/10.5194/acp-19-3747-2019 Sí open Copernicus Publications |