NO2 ambient concentrations in Switzerland

Cover NO2 ambient concentrations in Switzerland
Year 2011
Pages 72
Number UW-1123-E
Publisher Federal Office for the Environment FOEN
Series Environmental studies

Modelling results for 2005, 2010, 2015

Nitrogen dioxide (NO2) concentration levels are modelled for Switzerland, based on updated NOx emission inventories and on a dispersion model. An emission reduction of 27% is expected in the period 2005–2015 due to a number of reduction measures. The concentration levels for 2005–2015 continuously follow the decrease of the emissions. In 2005, the average population weighted NO2 concentration is 23.2 microgram/m3 and drops to 18.9 microgram/m3 until 2015. In 2005, 6%–35% of the inhabitants were exposed to exceeding concentration levels. The number is expected to decrease to 1%–10% until 2015. The exceedances mainly occur in the centres of the cities and along major high-ways.  


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