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Do the positive effects of the Corona Lock-Down offset the health issues caused by the pandemic?

A deeper analysis for Munich

The COVID-19 pandemic has infected about 13 million people and claimed more than 550 thousand deaths worldwide by 14 July 2020. It has been reported in research that high air pollution may be “one of the most important contributors to deaths from COVID-19”. Studies show a positive correlation between particulate matter and nitrogen dioxide to health damage and, more specifically, to diseases related to the lungs like pneumonia, which makes people suffering from these ailments more susceptible to COVID 19. On the other hand, due to the lockdown measures, significant improvement in air quality has been witnessed. Read more

Time series comparison of pre- and post-lockdown for German cities

In general all graphs show that the mean NO2 concentration after the lockdown date has decreased – at some stations the effect is larger than at others. Concentration peaks with similar amplitudes, compared to before the lockdown, persist. The overall patterns would require a more detailed analysis of the locations e.g. considering mobility behaviour.

  • Berlin
  • Dresden
  • Hamburg
  • Suttgart

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Time series comparison of pre- and post-lockdown for sample cities show that the lockdown impact on NO2 concentrations varies

Cities worldwide have been imposing lockdowns due to coronavirus, leading to traffic reductions and related to that, less NO2 pollution. The strength of the effect is not the same everywhere, being dependent on a number of variables, such as pollution levels and amount of traffic before the lockdown at the particular location, fleet composition, weather conditions and topography and urban architecture. Furthermore, the measures defining the “lockdown” were not the same everywhere and were also implemented with different levels of rigour. Without analyzing in-depth the factors at play at different places across the world, here just a few examples of what the change in NO2 pollution looked like in a few cities:

  • Wuhan
  • Paris
  • London
  • Fresno
  • Dehli
  • Boston

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NO2 concentrations during the lockdown in Munich

I have recently heard people uttering disappointment regarding the rather small effect they have observed at official measurement stations in Munich during the time of the lockdown due to the coronavirus. Looking at the raw hourly measurement traces at different locations in and around Munich, we can see a very clear drop during the initial phase of the lockdown, with concentrations coming up again after that. So we decided to take a deeper look. We considered impacts from weather conditions, season-specific influences as well as mobility behaviour. Read more

See the full picture: There is less net of the improvement in air quality through measures to curb the Covid-19 virus

Although measures to curb the Corona virus have (almost) brought many polluters to a standstill, the effects on the trends from measurements are not as obviously visible as some may have expected. In an interview with the Süddeutsche Zeitung, Dr. Birgit Fullerton, Head of Data Sience of Hawa Dawa, mentions possible reasons why the effects of the lock-down are not more clearly and sustainably recognizable in the air pollutant concentration in the area of Munich Airport (Süddeutsche Zeitung “At the airport you can hear the sparrows chirping”). Read more

Do Air Pollution Levels Influence COVID-19 Mortality Risk?

While the world has focused its full attention on the current coronavirus outbreak, other issues we were concerned about regarding our health might currently seem almost irrelevant to many of us. However, there is one factor that shouldn’t be ignored – potentially not even when looking at survival rates of COVID-19: air pollution.

While it is too early to clearly analyse the factors that affect survival rates of COVID-19 in different regions of the world, there is a fair amount of evidence that promotes the hypothesis that air pollution levels could play a significant role. Read more

Italian Scientists Discover a Correlation between Air Pollution (Particulate Matter) and the Rapid Spread of the Corona Virus in Northern Italy

This post is available in German only