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

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, 17/18-10-2005 AQ networks, Frank de Leeuw

AQ networks, Frank de Leeuw PM10 stations 10th AQ EIONET, Vilnius, 17/18-10-2005 AQ networks, Frank de Leeuw

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, 17/18-10-2005 AQ networks, Frank de Leeuw

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, 17/18-10-2005 AQ networks, Frank de Leeuw

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, 17/18-10-2005 AQ networks, Frank de Leeuw

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, 17/18-10-2005 AQ networks, Frank de Leeuw

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, 17/18-10-2005 AQ networks, Frank de Leeuw

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, 17/18-10-2005 AQ networks, Frank de Leeuw

PM10: monitoring is the sole source 10th AQ EIONET, Vilnius, 17/18-10-2005 AQ networks, Frank de Leeuw

Benzene, monitoring only 10th AQ EIONET, Vilnius, 17/18-10-2005 AQ networks, Frank de Leeuw

AQ networks, Frank de Leeuw Summary 10th AQ EIONET, Vilnius, 17/18-10-2005 AQ networks, Frank de Leeuw