Training workshop 09-10 June 2005 1

QA/QC for AQ data flows

Wim Mol

European Topic Centre on Air and Climate Change (ETC/ACC)

Training workshop 09-10 June 2005 2

ContentsContents

• QA/QC adhoc actions in 2004• QA/QC in the DEM• QA/QC feedback EoI2004• Future QA/QC actions

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QA/QC adhoc actions in 2004QA/QC adhoc actions in 2004

• Phantom stations and questionable station coordinates

• PM10 correction factors

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QA/QC in the DEMQA/QC in the DEM

• Inspection meta data in the screens and in DEM Meta info export files

• Controls on import• Errors and warnings on mandatory, essential

and desired meta data; on the units etc.• Visual inspection• Reports and export files• Outlier checks

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QA/QC in the DEMQA/QC in the DEM

• You are strongly requested to perform these checks

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QA/QC feedback EoI2004QA/QC feedback EoI2004

• The MS are responsible for the quality of the data

• The checks performed by ETC/ACC are extra service to improve the quality of AirBase

• The checks on mandatory/essential data and outliers can also be performed by the data supplier

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QA/QC feedback EoI2004QA/QC feedback EoI2004

• 1 October: all DEMs are received• 1 Oct-Jan next year: Uploading in AirBase;

QA/QC reports are sent; reactions from the MS

• Jan- 1 Mar: reactions processed• March: calculations statistics and

exceedances• 1 April: New data available in AirBase:

AirView and XML dumps

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QA/QC feedback EoI2004QA/QC feedback EoI2004

Feedback reports:

• Components

• Missing mandatory/essential meta info

• Re-submitted data

• Deletion stations/meas. conf. with data

• Deletion stations/meas. conf. without data

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QA/QC feedback EoI2004QA/QC feedback EoI2004

Calculation statistics/exceedances:

• Consistency between raw data and statistics

• Same algorithms

• Always statistics calculated independent of data coverage

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Current/Future QA/QC actionsCurrent/Future QA/QC actions

• Filling time gaps (historical data)• Checking station coordinates and

characteristics (spec. Urban stations)• More information about measurement

methods (including PM10 correction factors)• Checks (including outliers) on historical

AirBase data• Heavy metals (4th DD) reported in wrong units