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Bruce Rolstad Denby FAIRMODE 4th Plenary, Norrkjoping Sweden June 2011

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Presentation on theme: "Bruce Rolstad Denby FAIRMODE 4th Plenary, Norrkjoping Sweden June 2011"— Presentation transcript:

1 Bruce Rolstad Denby FAIRMODE 4th Plenary, Norrkjoping Sweden June 2011
Modelling of Nitrogen Dioxide (NO2) for air quality assessment and planning relevant to the European Air Quality Directive : WG1 Guidance document FAIRMODE Forum for air quality modelling in Europe Bruce Rolstad Denby FAIRMODE 4th Plenary, Norrkjoping Sweden June 2011

2 Aim of the document Provide more detailed guidance for NO2 modelling, beyond the ‘Reference guide for modelling’ (EEA TR) Provide a focal point for an overview of modelling To provide recommendations for good practise in NO2 modelling Provide a link to models and the modelling community through the MDS

3 Content 1 Introduction 2 Dispersion modelling 3 Chemistry modelling
4 Emission data and inventories 5 Meteorological data 6 Modelling applications for the AQ Directive References Appendix 1: Short description of parameterised “NOX to NO2” chemistry schemes 2: Short description of manuals and tools for calculating emission inventories

4 Contributors Contributor email Institute Comments Emilia Georgieva
JRC ISPRA Chapter 5, particularly 5.3 Bruce Rolstad Denby NILU All chapters Nagl Christian Gudrun Stranner Friedrich Poetscher Stephan Poupa UBA Chapter 4, Emissions, 4.4, 4.5, 4.6 and table. Appendix A2.1 Panagiota Dilara Chapter 4, Emissions. Some corrections and inclusions. Jongen Suzanne VITO Inclusion of VITO related models. Provided information on MIMOSA 4 Addo van Pul Joost Wesseling RIVM Contributions on NO2 chemistry modelling. Chapter Variety of comments on NL perspectives. John Stedman AEA Comments and additions mostly concerning NO2/NOx emission ratio. Helge Rørdam Olesen NERI Comments in chapters 2 and 3. Detailed description of OML chemistry. Dietmar Öttl Ulf Janicke STMK Janicke Consulting Section 2.3 Lagrangian particle modelling. David Carruthers Martin Seaton CERC Comments and additions to Sections 2.1, 2.2, 2.3, 2.4, 2.5, 3.1, 3.2, 4 and Appendix 1 Linton Corbet CHMI Contributions and corrections to Sectors 3.4 Lia Fragkou John Douros AUTH Significant contributions to Chapters 2 and 4 and Source apportionment Chapter 6.3 Niemi Jarkko HSY Recommended inclusion of AERMOD and other EPA models Rafael Borge Julio Lumbreras UPM Comments on Chapter 2 and significant content in Chapter 4 Philip Thunis Chapter 7.2 Validation of models

5 Some points Tries to provide real recommendations on NO2 modelling, however, does not recommend individual models Includes direct links to the Model Documentation System (MDS) Contains a short overview of parameterised “NOX to NO2” chemistry schemes Provides overview ’fitness for purpose tables’ for chemistry and dispersion modelling

6 Fitness for purpose - dispersion
Model types and applications Gaussian models Lagrangian particle models Obstacle resolving Eulerian models (CFD/LES) Terrain resolving Eulerian models (NWF) Open roads No obstacles, computationally expensive Poor resolution Street canyon In combination with parameterised wind field model Computationally expensive Intensive computationally Urban scale Requires homogenous meteorology Not computationally feasible Regional scale

7 Fitness for purpose - chemistry
Chemical schemes and applications Empirical schemes Photo-stationary and ozone limitting schemes Distance from source and mixing schemes Reduced photochemical schemes Full photochemical schemes Assessment Street level Given sufficient observations Overestimates NO2 in the presence of ozone Difficult to apply at this scale. CFD only Only reduced schemes necessary Urban scale Suitable for winter or low hydrocarbons Regional scale Missing significant chemistry Planning Only if scheme includes ozone and NO2 primary emissions Sensitivity to ozone and NO2 emissions represented Only if scheme includes ozone and NO2 primary emissions Suitable with low light or hydrocarbons

8 Process further This meeting:
volunteers for review additional comments and contributions welcome from all Reviews and comments to be submitted to August 31, 2011 Presentation Harmo14, Kos October 6, 2011 Final draft to be published as ETC TR October 31, 2011

9 Review and improvement
Person Reviewers Contributions General: whole document Ana Isabel Miranda Helge Rørdam Olesen Chapter 1: Introduction Chapter 2: Dispersion STEFANO GALMARINI BERTRAND BESSAGNET Chapter 3: Chemistry Appendix 1 Chapter 4: Emissions Appendix 2 Rafael Borge Julio Lumbreras Chapter 5: Meteorology Chapter 6: Applications Chapter 7: Quality assurance

10 For information and contributions contact
Bruce Rolstad Denby


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