Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ammonia emissions in Europe, part I: Development of a dynamical ammonia emission inventory
Abstract Nitrogen input from agricultural ammonia emissions into the environment causes numerous environmental and health problems. The purpose of this study is to present and evaluate an improved ammonia emission inventory based on a dynamical temporal parameterization suitable to compare and assess ammonia abatement strategies. The setup of the dynamical time profile (DTP) consists of individual temporal profiles for ammonia emissions, calculated for each model grid cell, depending on temperature, crop type, fertilizer and manure application, as well as on local legislation. It is based on the method of Skjøth et al., 2004 and Gyldenkærne et al., 2005. The method has been modified to cover the study area and to improve the performance of the emission model. To compare the results of the dynamical approach with the results of the static time profile (STP) the ammonia emission parameterizations have been implemented in the SMOKE for Europe emission model. Furthermore, the influence on secondary aerosol formation in the North Sea region and possible changes triggered through the use of a modified temporal distribution of ammonia emissions were analysed with the CMAQ chemistry transport model. The results were evaluated with observations of the European Monitoring and Evaluation Programme (EMEP). The correlation coefficient of NH3 improved significantly for 12 out of 16 EMEP measurement stations and an improvement in predicting the Normalized Mean Error can be seen for particulate NH4 + and NO3 −. The prediction of the 95th percentile of the daily average concentrations has improved for NH3, NH4 + and NO3 −. The NH3 concentration modelled with the STP is 157% higher in winter, and about 22% lower in early summer than the one modelled with the new DTP. Consequently, the influence of the DTP on the formation of secondary aerosols is particularly noticeable in winter, when the PM2.5 concentration is 25% lower in comparison to the use of STP for temporal disaggregation. Besides, the formation of particulate SO4 2− is not influenced by the use of the DTP.
Highlights We present an evaluated dynamical ammonia emission inventory. The inventory is suitable to compare and assess ammonia abatement strategies. CMAQ model run of temporal parameterization influences on sec. aerosol formation. Correlation coefficient of NH3 improved significantly for 12 out of 16 EMEP stations.
Ammonia emissions in Europe, part I: Development of a dynamical ammonia emission inventory
Abstract Nitrogen input from agricultural ammonia emissions into the environment causes numerous environmental and health problems. The purpose of this study is to present and evaluate an improved ammonia emission inventory based on a dynamical temporal parameterization suitable to compare and assess ammonia abatement strategies. The setup of the dynamical time profile (DTP) consists of individual temporal profiles for ammonia emissions, calculated for each model grid cell, depending on temperature, crop type, fertilizer and manure application, as well as on local legislation. It is based on the method of Skjøth et al., 2004 and Gyldenkærne et al., 2005. The method has been modified to cover the study area and to improve the performance of the emission model. To compare the results of the dynamical approach with the results of the static time profile (STP) the ammonia emission parameterizations have been implemented in the SMOKE for Europe emission model. Furthermore, the influence on secondary aerosol formation in the North Sea region and possible changes triggered through the use of a modified temporal distribution of ammonia emissions were analysed with the CMAQ chemistry transport model. The results were evaluated with observations of the European Monitoring and Evaluation Programme (EMEP). The correlation coefficient of NH3 improved significantly for 12 out of 16 EMEP measurement stations and an improvement in predicting the Normalized Mean Error can be seen for particulate NH4 + and NO3 −. The prediction of the 95th percentile of the daily average concentrations has improved for NH3, NH4 + and NO3 −. The NH3 concentration modelled with the STP is 157% higher in winter, and about 22% lower in early summer than the one modelled with the new DTP. Consequently, the influence of the DTP on the formation of secondary aerosols is particularly noticeable in winter, when the PM2.5 concentration is 25% lower in comparison to the use of STP for temporal disaggregation. Besides, the formation of particulate SO4 2− is not influenced by the use of the DTP.
Highlights We present an evaluated dynamical ammonia emission inventory. The inventory is suitable to compare and assess ammonia abatement strategies. CMAQ model run of temporal parameterization influences on sec. aerosol formation. Correlation coefficient of NH3 improved significantly for 12 out of 16 EMEP stations.
Ammonia emissions in Europe, part I: Development of a dynamical ammonia emission inventory
Backes, Anna (Autor:in) / Aulinger, Armin (Autor:in) / Bieser, Johannes (Autor:in) / Matthias, Volker (Autor:in) / Quante, Markus (Autor:in)
Atmospheric Environment ; 131 ; 55-66
20.01.2016
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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