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How concerning should NO2 be? I was surprised to see that on this map Tokyo seems worse off than Bangkok. On AQI measures it's typically the other way around.
by jfoster 6y ago
How concerning should NO2 be?
I was surprised to see that on this map Tokyo seems worse off than Bangkok. On AQI measures it's typically the other way around.
- enriquto 6y agoNO2 by itself is not too much concerning (it is toxic, but it appears in very low concentrations in the open). It just happens to be very easy to detect using hyperspectral images, and it is also a proxy for the existence of other pollutants.
- DoingIsLearning 6y agoThe evidence so far is that on top of the expected lung disease in children and adults (due to lung tissue irritation) it more critically seems to reduce human lifespan. [0] The challenge is to fully separate if this effect is due to NO2 exposure or a combination of other pollutants found in diesel fuel exhaust. The key takeaway is that Diesel engines release a very high amount of NO2 and that NO2 is in all likelihood killing us slowly. We need to decomission diesel engines from roads, and more urgently, remove diesel engines from city centres ASAP (Due to traffic jams, iddling diesel engines create very high concentrations of NO2 in the vicinity of pedestrians and cyclists). [0] Nitrogen dioxide: health effects of exposure, Guidance from the Committee on the Medical Effects of Air Pollutants (COMEAP), 2015 https://www.gov.uk/government/publications/nitrogen-dioxide-health-effects-of-exposure https://www.gov.uk/government/publications/nitrogen-dioxide-...