Thread: London pollution monitoring
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Old May 12th 19, 08:26 PM posted to uk.transport.london
Optimist[_3_] Optimist[_3_] is offline
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Default London pollution monitoring
On Sun, 12 May 2019 09:36:12 +0000 (UTC), wrote:

[snipped]

CO2 is the important pollutant, all the others are irrelevent. If all traffic
stopped now the particulates and NOx would be gone in a day. The CO2 will still
be around for thousands of years to come.

CO2 is a greenhouse gas, but far less potent in that respect than water vapour - but no-one suggests
trying to reduce emissions of water vapour! Neither gas is a pollutant, they are both essential for
photosynthesis without which all life would cease. Moreover, horticulturists deliberately increase
atmospheric CO2 concentrations in greenhouses and polytunnels to boost crop yields.

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