Ellermann, T., Nordstrøm, C., Brandt, J., Christensen, J., Ketzel, M. & Jensen, S.S. 2010: The Danish Air Quality Monitoring Programme. Annual Summary for 2009. National Environmental Research Institute, Aarhus University. 61 pp. -NERI Technical Report No. 799.
This report presents the result of the Danish Air Quality Monitoring Programme (LMP) in 2009. The monitoring programme is carried out by the National Environmental Research Institute (NERI) at University of Aarhus. The programme is based on continuous measurements at nine monitoring stations situated in the four largest cities and two stations in background areas. These measurements are supplemented with model calculations using NERI’s air quality models.
The aim of the program is to monitor air pollutants relevant to human health in accordance with the EU air quality directives. The programme includes measurements of sulphur dioxide (SO2) and particulate sulphur (S), nitrogen oxides (NOx/NO2), particulate mass (PM10 and PM2.5), benzene (C6H6) and toluene (C7H8) carbon monoxide (CO), ozone (O3), lead (Pb), arsenic (As), cadmium (Cd), mercury (Hg), nickel (Ni) and polycyclic aromatic hydrocarbons (PAH). In 2009 the programme was expanded with measurements of a number of volatile organic compounds (VOC’s) that are precursors for formation of ozone. The measurements and model calculations are used to evaluate the Danish air quality in relation to limit values and to determine sources to the different pollutants. Further, the program serves as basis for evaluation of the impact of regulations of emissions and as basis for various research projects related to air quality.
In 2009 PM10 at all the stations were below both the annual limit value (40 µg/m3) and the limit value for the 35th highest daily average value for PM10 (50 µg/m3). At H.C. Andersens Boulevard, Copenhagen a significant decrease (about 7 µg/m3) in the PM10 annual mean concentration was observed between 2008 and 2009; a decrease that mainly was due to new road astfalt. PM2.5 was lower than the annual limit value (25 µg/m3) valid from 2015.
The annual limit value including the margin of tolerance for NO2 (42 µg/m3 in 2009) was exceeded at both the street stations in Copenhagen, whereas no exceedance was observed in Odense, Aalborg and Aarhus. The annual limit value (to be complied with in 2010) was exceeded at four out of five street stations in 2009. The NO2 concentrations have shown a slight decrease during the last twenty years. Model calculations at selected streets in Copenhagen and Aalborg indicate that the limit value including margin of tolerance were exceeded at several streets in central Copenhagen and Aalborg.
The ozone level was in 2009 almost the same as in 2008 at all rural and urban background stations and no clear trend was thus observed. The information threshold at 180 µg/m3 was not exceeded. The target value for the max 8 hours ozone concentration on 120 µg/m3 was also not exceeded, but the long-term objective for this target was exceeded at almost all non-traffic stations. The target value for AOT40 (18000 (µg/m3)·h) was not exceeded and the long term target for AOT40 (6000 (µg/m3)·h) was only exceeded in Ulborg and at Lille Valby, Roskilde.
The report presents results for volatile organic compounds (VOC) measured at the urban background in Copenhagen. VOC’s can act as ozone precursors, although the formation of ozone in Denmark is in general small due to moderate solar radiation. The ozone pollution in Denmark is to a large extent caused by long distance transport of pollutants from other European countries.
The levels of SO2 and heavy metals have decreased for more than two decades and are now far below the limit values. The limit values for benzene and CO are not exceeded and the levels have decreased for the last decade.
Measurements of particle bound PAH concentrations were performed at H.C. Andersens Boulevard, Copenhagen. The average concentration of benzo[a]pyrene was 0.25 ng/m3. The target value for benzo[a] pyrene (1 ng/m3) was not exceeded in 2009.
Actual data, quarterly reports, annual and multi-annual summaries are available at the website of NERI
(http://www.dmu.dk/International/Air).
This report presents the result of the Danish Air Quality Monitoring Programme (LMP) in 2009. The monitoring programme is carried out by the National Environmental Research Institute (NERI) at University of Aarhus. The programme is based on continuous measurements at nine monitoring stations situated in the four largest cities and two stations in background areas. These measurements are supplemented with model calculations using NERI’s air quality models.
The aim of the program is to monitor air pollutants relevant to human health in accordance with the EU air quality directives. The programme includes measurements of sulphur dioxide (SO2) and particulate sulphur (S), nitrogen oxides (NOx/NO2), particulate mass (PM10 and PM2.5), benzene (C6H6) and toluene (C7H8) carbon monoxide (CO), ozone (O3), lead (Pb), arsenic (As), cadmium (Cd), mercury (Hg), nickel (Ni) and polycyclic aromatic hydrocarbons (PAH). In 2009 the programme was expanded with measurements of a number of volatile organic compounds (VOC’s) that are precursors for formation of ozone. The measurements and model calculations are used to evaluate the Danish air quality in relation to limit values and to determine sources to the different pollutants. Further, the program serves as basis for evaluation of the impact of regulations of emissions and as basis for various research projects related to air quality.
In 2009 PM10 at all the stations were below both the annual limit value (40 µg/m3) and the limit value for the 35th highest daily average value for PM10 (50 µg/m3). At H.C. Andersens Boulevard, Copenhagen a significant decrease (about 7 µg/m3) in the PM10 annual mean concentration was observed between 2008 and 2009; a decrease that mainly was due to new road astfalt. PM2.5 was lower than the annual limit value (25 µg/m3) valid from 2015.
The annual limit value including the margin of tolerance for NO2 (42 µg/m3 in 2009) was exceeded at both the street stations in Copenhagen, whereas no exceedance was observed in Odense, Aalborg and Aarhus. The annual limit value (to be complied with in 2010) was exceeded at four out of five street stations in 2009. The NO2 concentrations have shown a slight decrease during the last twenty years. Model calculations at selected streets in Copenhagen and Aalborg indicate that the limit value including margin of tolerance were exceeded at several streets in central Copenhagen and Aalborg.
The ozone level was in 2009 almost the same as in 2008 at all rural and urban background stations and no clear trend was thus observed. The information threshold at 180 µg/m3 was not exceeded. The target value for the max 8 hours ozone concentration on 120 µg/m3 was also not exceeded, but the long-term objective for this target was exceeded at almost all non-traffic stations. The target value for AOT40 (18000 (µg/m3)·h) was not exceeded and the long term target for AOT40 (6000 (µg/m3)·h) was only exceeded in Ulborg and at Lille Valby, Roskilde.
The report presents results for volatile organic compounds (VOC) measured at the urban background in Copenhagen. VOC’s can act as ozone precursors, although the formation of ozone in Denmark is in general small due to moderate solar radiation. The ozone pollution in Denmark is to a large extent caused by long distance transport of pollutants from other European countries.
The levels of SO2 and heavy metals have decreased for more than two decades and are now far below the limit values. The limit values for benzene and CO are not exceeded and the levels have decreased for the last decade.
Measurements of particle bound PAH concentrations were performed at H.C. Andersens Boulevard, Copenhagen. The average concentration of benzo[a]pyrene was 0.25 ng/m3. The target value for benzo[a] pyrene (1 ng/m3) was not exceeded in 2009.
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 (2,70 MB).
