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Glasgow traffic pollution levels rose by nearly a third during COP26 summit
Nitrogen dioxide (NO2) pollution increased by nearly a third (30%) within a mile of COP26 in Glasgow last month, according to new data by Aeternum.
NO2 levels reached a peak on November 8th, when Aerternum’s sensor recorded an average of 40µg/m2. The sensor was positioned under the Kingston Bridge, less than a mile from the SEC where COP26 was held.
This is 93% higher than the World Health Organisation (WHO) 2021 Air Quality Guidelines, which recommends that NO2 levels should not exceed an average of 25µgm3 in any 24-hour period.
Aeternum’s sensor found the average concentration of NO? during the two weeks of the conference was 34 µg/m³ – an increase of 30% (8µg/m³) from October’s average of 26µg/m³.
The average level of NO? began to drop in the days following the end of the conference, falling back down to 29µg/m³ by 29th November.
Aeternum’s data follows a similar trend to two air quality sensors installed by the UK’s Government’s Department for Environment, Food and Rural Affairs (DEFRA) around Glasgow during the same time period, which recorded a peak in nitrogen dioxide during the conference.
Paul Carter, Founder of Aeternum, said: ‘Our sensor data clearly shows an increase in average nitrogen dioxide levels under Glasgow’s Kingston Bridge during COP26, compared to the month prior to the event. When we compared our findings with those of DEFRA’s monitoring stations, we identified a general trend that average NO? levels increased during the event and later fell to almost its previous levels.”
‘There has been much speculation about the potential environmental impact of holding such a large global event that saw many delegates arriving and departing via modes of transport that are harmful to the environment.
‘Our sensor is positioned along a main walkway leading to the SEC, enabling us to gather a clear picture of the air many attendees were breathing during the conference. By accurately monitoring hyperlocal air quality, local councils and communities can gather a clear, real-time picture of the impact of pollutants in the air local people are breathing – and make informed decisions about how best to manage them.’
The data follows a similar trend to two air quality sensors installed by the UK’s Government’s Department for Environment, Food and Rural Affairs (DEFRA) around Glasgow during the same time period, which recorded a peak in nitrogen dioxide during the conference
Nitrogen oxides are produced in combustion processes, and road traffic is the principal outdoor source of nitrogen dioxide, suggesting traffic pollution caused the increase in nitrogen dioxide in the air during the two weeks of the conference.
Higher levels of nitrogen oxide can contribute to health issues, particularly among young children, asthmatics and adults with heart and respiratory disorders.
Paul Carter, founder of Aeternum, said: “Our sensor data clearly shows an increase in average nitrogen dioxide levels under Glasgow’s Kingston Bridge during Cop26, compared to the month prior to the event.
“When we compared our findings with those of DEFRAs monitoring stations, we identified a general trend that average NO2 levels increased during the event and later fell to almost its previous levels.”
He continued: “There has been much speculation about the potential environmental impact of holding such a large global event that saw many delegates arriving and departing via modes of transport that are harmful to the environment.
“Our sensor is positioned along a main walkway leading to the SEC, enabling us to gather a clear picture of the air many attendees were breathing during the conference. By accurately monitoring hyperlocal air quality, local councils and communities can gather a clear, real-time picture of the impact of pollutants in the air local people are breathing – and make informed decisions about how best to manage them.”
New data released today by Aeternum, a provider of low cost, unplugged sensors designed to accurately monitor air quality, finds that levels of the air pollutant nitrogen dioxide (NO₂) increased by nearly a third (30%) within a mile of COP26 in Glasgow last month.NO₂ levels reached a peak during the conference on 8th November, when Aeternum’s sensor recorded an average of 48 micrograms (µg) per metre cubed for the day – 93% higher than the World Health Organisation’s (WHO) 2021 Air Quality Guidelines, which recommend nitrogen dioxide levels should not exceed an average of 25 µg/m³ in any 24-hour period.
Aeternum’s air quality sensor is positioned under the Kingston Bridge, less than a mile from the Scottish Event Campus (SEC) where COP26 was held. Carrying the M8 motorway through the city centre with five traffic lanes in each direction, the Kingston Bridge is one of the busiest bridges in Europe, with around 150,000 vehicles travelling across it every day.
Aeternum’s sensor found the average concentration of NO₂ during the two weeks of the conference was 34 µg/m³ – an increase of 30% (8µg/m³) from October’s average of 26µg/m³. The average level of NO₂ began to drop in the days following the end of the conference, falling back down to 29µg/m³ by 29th November (see Figure 1).
Aeternum’s data follows a similar trend to two air quality sensors installed by the UK’s Government’s Department for Environment, Food and Rural Affairs (DEFRA) around Glasgow during the same time period, which recorded a peak in nitrogen dioxide during the conference (see Figure 2).
Nitrogen oxides are produced in combustion processes, and road traffic is the principal outdoor source of nitrogen dioxide, suggesting traffic pollution caused the increase in nitrogen dioxide in the air during the two weeks of the conference. Higher levels of nitrogen oxide can contribute to health issues, particularly among young children, asthmatics and adults with heart and respiratory disorders.
Paul Carter, Founder of Aeternum, said: “Our sensor data clearly shows an increase in average nitrogen dioxide levels under Glasgow’s Kingston Bridge during COP26, compared to the month prior to the event. When we compared our findings with those of DEFRA’s monitoring stations, we identified a general trend that average NO₂ levels increased during the event and later fell to almost its previous levels.”
He continued: “There has been much speculation about the potential environmental impact of holding such a large global event that saw many delegates arriving and departing via modes of transport that are harmful to the environment. Our sensor is positioned along a main walkway leading to the SEC, enabling us to gather a clear picture of the air many attendees were breathing during the conference. By accurately monitoring hyperlocal air quality, local councils and communities can gather a clear, real-time picture of the impact of pollutants in the air local people are breathing – and make informed decisions about how best to manage them.”
Aeternum deployed its air quality sensors in Glasgow to support the award-winning Design Engineer Construct! learning programme from Class of Your Own (COYO), a UK-based social business that focuses on the built environment to enhance secondary school STEM education. This year, COYO’s Design ‘The COP’ – The Centre for Our Planet challenge helped secondary school students to explore how STEM can be used to make environmental and social impact, particularly in the construction industry. From June until the close of The COP challenge and COP26, Aeternum’s sensor data enabled participants to incorporate air quality into their design considerations and develop methods to mitigate pollution in the future.
Alison Watson MBE, Founder and CEO of COYO, said: “It’s so important the children and young people explore the STEM of the real world, especially something that literally impacts every breath they take! We look forward to continuing our work with Aeternum to support the DEC programme in 2022, providing schools with a great opportunity to embed this critical topic in the curriculum.”
