Kemp, K., Ellermann, T., Palmgren, F. & Wåhlin, P. 2006. NERI Technical report No. 584. 42 pp.
Summary
The Danish Air Quality Monitoring Programme (LMP IV) has been revised and is still under revision in accordance with the Framework Directive and the four daughter directives of SO2, NOx/NO2, PM10, lead, benzene, CO, ozone, arsenic, cadmium, mercury, nickel and polycyclic aromatic hydrocarbons. The data sets for year 2005 are almost complete for most stations. The monitoring programme consists of 10 stations. Also results from one station under the Municipality of Copenhagen are included in this report.
The concentrations were in 2005 almost the same as in 2004. Changes may mainly be due to meteorological conditions. Three exceedances of the limit value occurred for PM10.
The limit value + the margin of tolerance for the annual average of NO2 (50 µg/m3 in 2005) was exceeded in Copenhagen at the street station on H.C. Andersens Boulevard. The limit value (to be complied with in 2010) of the annual average of NO2, was in 2005 exceeded at three street stations. The NO2 concentrations seem to have been almost unchanged during the last ten years.
The ozone level was in 2005 - more or less - the same at all rural and urban background stations and no clear trend is observed. The information threshold of 180 µg/m3 was not exceeded. The target values were not exceeded, but the long-term objectives of max 8 hours on 120 µg/m3 were exceeded at three urban background and rural stations. The long term objective for AOT40 at 6,000 µg/m3 • hours were exceeded in one case. The O3 pollution in Denmark is to a large extent caused by emissions in other European countries.
The limit value for the 35th highest daily average value for PM10 (50 µg/m3 for 2005) was in 2005 exceeded at 3 stations. The limit value for the yearly average (40 µg/m3) was exceeded at one out of these stations. (The margin of tolerance is =0 from 2005). At all stations the indicative limit values for PM10, supposed to be met in 2010, (annual average value at 20 µg/m3 and 50 µg/m3 not to be exceeded more than 7 times per year) were exceeded (including the rural station Keldsnor/9055). Emission in other European countries contributes significantly to the PM10 levels in Denmark.
The SO2, and lead levels have been decreasing for more than two decades and are far below the limit values. The limit values for benzene and CO are not exceeded and the levels have been decreasing for the last decade.
Supplementary assessment of the air quality was carried out using NERI’s air quality models in the agglomerations Copenhagen and Aalborg. An assessment for 2004 for NOx / NO2, CO, O3, and PM10 / PM25 in urban background and in selected streets in Copenhagen and Aalborg was described in last years annual report (Kemp et al. 2005). The work is continuing.
Actual data, quarterly reports, annual and multi-annual summaries are available at the website of NERI (http://www.dmu.dk/International/Air).
Full report in pdf-format (424 kB).
