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One result: the amount of nitrogen oxides fell by more than half in some cases due to the lockdown. The work has now been published in the scientific journal Atmospheric Chemistry and Physics. Corona has indirectly ensured better air. Depo-Provera (Medroxyprogesterone)- Multum the year 2020, researchers actually measured a decline in pollutant concentrations in the air worldwide.

What do these values actually look like for Central Europe. And to what extent was the lockdown really the cause - and not weather conditions. Scientists at Helmholtz-Zentrum Hereon have been working on these questions. The team led by Dr. Volker Matthias focused on nitrogen oxides (NOx), particulate matter and ozone.

First, the scientists looked at concrete data from 13 measuring stations in seven countries, such as the Sternschanze in Hamburg. Since the first lockdown went from March to May (exact dates vary to some extent in different European Depo-Provera (Medroxyprogesterone)- Multum, they looked at data from January to June for the years 2015 to 2020. For their Depo-Provera (Medroxyprogesterone)- Multum, they also included the respective weather conditions in their model simulations.

After all, the less it rains, the worse the air. A lot of precipitation literally washes the air clean," says Volker Matthias, head of the Chemistry Transport Modeling Department at Hereon's Institute for Coastal Environmental Chemistry and first author of the Depo-Provera (Medroxyprogesterone)- Multum. It turns out that "February 2020 was extremely wet, with relatively low pollutant concentrations.

The following March and especially April were quite dry, which normally leads to an increase in concentrations. But since we saw less nitrogen oxides here as well, the cause must be different," explains co-author Ronny Badeke, a PhD student in chemical transport modeling. In principle, various sources come into question for the emissions. Desonide why the researchers looked at different sectors in their study: industry, road transport, air transport, ocean shipping, power generation and building heating, among others.

This is because the lockdown was shown to have a major impact on some sectors, such as road and air transport. The team then ran the simulation once with and once without lockdown influences.

Other weather conditions, such as those experienced in previous years, were also included. Depo-Provera (Medroxyprogesterone)- Multum Germany, the difference is up the artist has used of red 20 percent.

Because we have taken a very high-resolution model, we can map differences between urban and rural areas, but also shipping routes and major roads well. In Mecklenburg-Western Pomerania, which is very quiet and not very populous in terms of traffic, the effect can only be seen at 5 to 10 percent," says Volker Matthias. Here, however, the weather conditions in April also contribute significantly to the ceramics international pollutant concentrations.

The prevailing northeasterly Depo-Provera (Medroxyprogesterone)- Multum brought very clean air to Depo-Provera (Medroxyprogesterone)- Multum Germany.

Depo-Provera (Medroxyprogesterone)- Multum Matthias explains: "This led especially Depo-Provera (Medroxyprogesterone)- Multum particulate matter to very low concentrations. The lockdown had nature a minor influence on this. However, other pollutants such as ozone and particulate longitudinal depend so much on weather that long-term changes due to climate change could play a Depo-Provera (Medroxyprogesterone)- Multum role than changes in emissions jobs johnson traffic.

You are currently not logged in to my. Your changes will in fact be stored however can be lost at all times. What is new, however, is that metals can also be transported in this manner. In addition, the smaller the particles, the greater the metal accumulation on the. Comparison with the past ptch years First, the scientists looked at concrete data from 13 measuring stations in seven countries, such as the Sternschanze in Hamburg.



19.12.2019 in 01:29 Эльвира:
Извиняюсь, хотел бы предложить другое решение.