for a long time, politicians and klimaorganisationer tried to come up with suggestions on how pollution in Danish cities can be reduced.

It now appears that coronakrisen has been effective helping.

the Level of NOx-gases is decreased by about 40 percent as a result of the government’s covid-19-restrictions.

Thus, air pollution decreased in the four largest Danish cities, Copenhagen, Aarhus, Odense and Aalborg.

It writes the environmental protection Agency in a press release.

It is primarily the less road traffic, which has led to, that the air has become cleaner in cities.

It is the environmental protection Agency, which together with the DCE – Danish Centre for Environment and Energy, Aarhus University, that measures the ambient concentrations of NOx-gases.

‘It is the level of NOx in week 12, which declined 40 percent compared with the rest of the year,’ it says in the press release.

It is not only in the Danish cities that have seen this development as a result of the covid-19-restrictions.

In the Portuguese capital, Lisbon, is the ambient concentrations of NOx decreased by 51 percent compared to in week 12 last year.

In Milan, which has been particularly hard hit by the corona, there has been a decline of 21 percent, according to the press release.