1. Analysing AQ monitoring networks
Frank de Leeuw
AQ EIONET workshop
17-18 October 2005, Vilnius

2. FWD questionnaire & EoI
Linking the information based on EoI station and/or local code in both systems.
Not all stations could be linked
mistakes
mobile stations
indicative measurements
10th AQ EIONET, Vilnius, 17/
AQ networks, Frank de Leeuw

3. AQ networks, Frank de Leeuw
PM10 stations
10th AQ EIONET, Vilnius, 17/
AQ networks, Frank de Leeuw

4. AQ networks, Frank de Leeuw
FWD requirements
Data quality objectives
Data coverage
Reference method
PM10 measuring method; correction factor
Macro/micro siting criteria
Station density
10th AQ EIONET, Vilnius, 17/
AQ networks, Frank de Leeuw

5. AQ networks, Frank de Leeuw
Data coverage
DQO: 90% excl. calibration and maintenance
PM10:
80% more than 85% data coverage
75% more than 90% data coverage
10th AQ EIONET, Vilnius, 17/
AQ networks, Frank de Leeuw

6. AQ networks, Frank de Leeuw
Reference method
SO2, NO2 and O3: 
PM10:
beta absorption 47%
gravimetry 15%
TEOM 37%
inconsistencies with AirBase info found
correction factors not always given for when beta absorption or TEOM is used.
10th AQ EIONET, Vilnius, 17/
AQ networks, Frank de Leeuw

7. AQ networks, Frank de Leeuw
Macroscale siting
Ozone station type: according to EoI meta info >14% is not a (sub)urban or rural background station
10th AQ EIONET, Vilnius, 17/
AQ networks, Frank de Leeuw

8. AQ networks, Frank de Leeuw
Microscale siting
meta info only on a few items and limited number of stations
inlet sampling height: 6-14% less then 1.5 or more then 4 m (availability 50%)
distance to kerb
NO2: 82 station with info, 42 < 5m
PM10 info for 75 stations, 46 < 10m
10th AQ EIONET, Vilnius, 17/
AQ networks, Frank de Leeuw

9. AQ networks, Frank de Leeuw
Questionnaire
Form 10x: “list of zones in relation to assessment threshold exceedances”
non-mandatory information
PM10: score = 17 out of 21 countries;
335 out of 557 zones.
Benzene: 14/21 countries; 226/339 zones
10th AQ EIONET, Vilnius, 17/
AQ networks, Frank de Leeuw

10. PM10: monitoring is the sole source
10th AQ EIONET, Vilnius, 17/
AQ networks, Frank de Leeuw

11. Benzene, monitoring only
10th AQ EIONET, Vilnius, 17/
AQ networks, Frank de Leeuw

12. AQ networks, Frank de Leeuw
Summary
10th AQ EIONET, Vilnius, 17/
AQ networks, Frank de Leeuw