http://www.esa.int/ESA_Multimedia/Images/2020/06/Global_air_pollution_maps_now_available

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A new online platform that allows for the tracking of air pollution
worldwide is now available to the public.
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Global air pollution maps now available

11/06/2020 15078 views 364 likes 440244 ID
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A new online platform that allows for the tracking of air pollution
worldwide is now available to the public. The maps, which use data
from the Copernicus Sentinel-5P satellite, show the averaged nitrogen
dioxide concentrations using a 14-day moving average. The maps not
only show changes over time on a global scale, but also provide the
possibility for users to zoom in to areas of interest, for example
any city or region over Europe.  

The averaged maps also reflect the effects of the COVID-19 lockdown -
with drastic reductions of nitrogen dioxide concentrations visible
over many areas. These effects can now be easily explored across the
globe.

Nitrogen dioxide concentrations in our atmosphere vary widely on a
day-to-day basis owing to the fluctuations of emissions, as well as
variations in weather conditions such as sunlight, temperature and
wind, all of which can affect the lifetime of the gas in the
atmosphere.

For these reasons, it is necessary to analyse data over a substantial
period of time - in this case 14 days - as it allows for the accurate
mapping and analysis of nitrogen dioxide concentrations across the
globe.

Nitrogen dioxide is produced from power plants, vehicles and other
industrial facilities and can have significant impacts on human
health - increasing the likelihood of developing respiratory
problems.

With air quality a serious concern, the Copernicus Sentinel-5P
satellite was launched in 2017 to map a multitude of air pollutants
around the globe. Copernicus Sentinel-5P carries the Tropomi
instrument - a state-of-the-art instrument that detects the unique
fingerprint of atmospheric gases to image air pollutants more
accurately and at a higher spatial resolution than ever before.

The mapping portal is part of the Sentinel-5P Product Algorithm
Laboratory (S5P-PAL) - an ongoing project funded by the European
Commission. S5P-PAL is a project that allows fast and cost-efficient
Sentinel-5P prototype product development (for example bromine
monoxide and water vapour) and the generation of higher level
products like global maps. New mapping portals for the carbon
monoxide product and additional functionalities, for example the
selection of an area and time-period to investigate time-series of
measurements, are currently in development.

The mapping portal is available here: https://maps.s5p-pal.com/

The S5P-PAL is also part of the new 'Rapid Action on Coronavirus and
Earth observation' dashboard, also known as RACE. The platform
provides access to key environmental, economic and social indicators
to measure the impact of the coronavirus lockdown and monitor
post-lockdown recovery.

About the Copernicus Sentinels

The Copernicus Sentinels are a fleet of dedicated EU-owned
satellites, designed to deliver the wealth of data and imagery that
are central to the European Union's Copernicus environmental
programme. The European Commission leads and coordinates this
programme, to improve the management of the environment, safeguarding
lives every day. ESA is in charge of the space component, responsible
for developing the family of Copernicus Sentinel satellites on behalf
of the European Union and ensuring the flow of data for the
Copernicus services, while the operations of the Copernicus Sentinels
have been entrusted to ESA and EUMETSAT.

  * 
    contains modified Copernicus Sentinel data (2020), processed by S
    [&]T
  * 
    Observing the Earth
  * 
    Sentinel-5P
  * 
    Copernicus

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