European Tropospheric Assimilation based Analyses

Assessment of air quality conditions by data assimilation

On an extended European grid, near surface concentrations of air quality related trace gases will be analysed joining the EURAD chemistry transport model and satellite products and in situ observations. The algorithm is the three dimensional variational (3D-var) method which allows for a best linear unbiased estimate (BLUE).

Surface Pollutant Maps (European Domain)

Year:

2002 2003 2004 2005

Month:

01 02 03 04 05 06 07 08 09 10 11 12

Day:

01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Daily maps for January 01, 2002:

	SO2 Sulphur Dioxide	NO2 Nitrogen Dioxide	O3 Ozone	CO Carbon Monoxide	PM10 Particulate Matter
Daily maximum
Daily mean
Max. 1h average
Max. 8h average
Max. 24h average

Monthly maps for January 2002:

	SO2 Sulphur Dioxide	NO2 Nitrogen Dioxide	O3 Ozone	CO Carbon Monoxide	PM10 Particulate Matter
Monthly mean
Daily variance

Annual maps for 2002:

	SO2 Sulphur Dioxide	NO2 Nitrogen Dioxide	O3 Ozone	CO Carbon Monoxide	PM10 Particulate Matter
Annual mean
Monthly variance

Additional Data Sources / Information

Documentation

• Short introduction to the EURAD data assimilation system
• EURAD_IM at COST (Uni Hamburg)
• EURAD_IM at MDS (Model Documentation System @ European Topic Centre on Air and Climate Change)

Background information

• RIU/EURAD Home page
• UBA Austria
• BAFU Switzerland
• EMPA Switzerland
• LANUV-NRW Germany

Contact details