Kortlægning af luftkvalitet og befolkningseksponering langs statsvejene i Danmark
DOI:
https://doi.org/10.54337/ojs.djtr.vi6.7983Keywords:
OML-Highway model, luftkvalitet, air qualityAbstract
This article describes the results of a mapping of air quality in 2019 along state roads throughout Denmark. The mapping has been carried out with an improved version of the OML-Highway model, and the methods and data used have been described. In the air quality mapping, the annual mean values of NO2, PM2.5 and PM10, which are health related pollutants, are calculated at all addresses. The number of affected homes and people along the road network is estimated to describe the exposure of the population to air pollution. Air quality is compared with current and proposed EU limit values and WHO air quality guidelines from 2021. The mapping shows that at a distance of 1,000 m from the state road network, approx. 1.5 million people live in approx. 3/4 million housing units distributed over approx. half a million addresses. All people along the state road network live at addresses that are below the limit value for NO2. Only approx. 500 people (0.04%) live at addresses where the proposed EU limit value is exceeded. On the other hand, approx. 49% live at addresses that exceed WHO guidelines from 2021. For PM2.5, everyone lives at addresses that are below the limit value, but approx. 49% live at addresses with concentrations of PM2.5 that exceed the proposed EU limit value, and all addresses exceed WHO guidelines. For PM10, all people live at addresses below the limit value, but approx. 2% live at addresses with PM10 concentrations exceeding the proposed EU limit value, and approx. 97% live at addresses exceeding WHO guidelines from 2021. Air quality levels and population exposure along state roads are a combination of the background contribution and the contribution from the state roads.
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