Guidance Report on Preliminary Assessment under EC Air Quality Directives

Roel van Aalst1 , Lynne Edwards2, Tinus Pulles3, Emile De Saeger4, Maria Tombrou5, Dag Tønnesen6 '

January 1998


Table of contents


1. Introduction

2. General outline of the procedure

3. Preliminary measurements
    3.1. Introduction
    3.2. Measuring strategy
    3.3. Preliminary measurement techniques
    3.4. Use of the diffusive sampling technique
    3.5. Use of a mobile laboratory in areas of maximum concentrations
    3.6. Use of a mobile laboratory for grid monitoring
    3.7. Data evaluation and uncertainty assessment
    3.8. References

4. Human activity and emission inventories
    4.1 General Methodology
    4.2 Information on some pollutants and examples
    4.3 Uncertainty Assessment
    4.4 References

5. Modelling
    5.1 Introduction
    5.2 Selection and application of models
    5.3 Application to four pollutants
    5.4 Uncertainty of model results
    5.5 References

6. Recommendations for specifications of preliminary assessment
    6.1 Preliminary assessments
    6.2. Criteria for judging existing assessments

7. Documenting the assessment ; update procedure
    7.1 Mapping of results
    7.2 Documenting of procedures followed
    7.3 Documenting uncertainties
    7.4 Updating procedure

Annex 4-1: SNAP 97 subsector (=level 2) definitions


Annex 5.2 Model evaluation parameters

Annex 5.3 Limitations and uncertainties in meteorological estimates using dispersion models


The guidance report was produced by JRC-ERLAP and the EEA European Topic Centre on Air Quality (ETC-AQ), with support from the European Topic Centre on Air Emissions (ETC-AEM). Joint project leaders were Roel van Aalst (ETC-AQ) and Emile de Saeger (JRC-ERLAP).

The task was supervised by Lynne Edwards (DGXI) and Gordon McInnes (EEA). The contact person in the European Commission was Pierre Hecq. Dick van den Hout, consultant for the Commission in air quality matters, has been involved in the work. A meeting with experts from some Member States provided valuable input. We also thank national representatives and other participants in the Steering Group meeting of National Experts on Air Quality and its Working Groups for useful comments and contributions.

Download the report as PDF File (Approx. 1157 Kb)

1 European Topic Centre on Air Quality, RIVM, Bilthoven, the Netherlands
2 European Commission, DGXI, Brussels
3 European Topic Centre on Air Emissions, TNO, Apeldoorn, the Netherlands
4 CEC Joint Research Centre, Ispra, Italy
5 European Topic Centre on Air Quality, NOA-University of Athens, Athens, Greece
6 European Topic Centre on Air Quality, NILU, Kjeller, Norway


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