If a community is emitting OH* it is empowering its citizens with high air quality and fighting climate change!
When OH* is high, the air quality includes helpful chemical activity that is not widely known. The aerosols in the air shed are attached to, made heavier and more water soluble, this both removes them by dry deposition and makes them easier to remove by rain, and the OH* attaches to aerosols of all sizes so it has a full spectrum benefit. The PM is made heavier and removed more quickly and the visibility of the PM as haze is reduced and air clarity is enhanced while reducing the health hazard.
Because PM is lowered there is a corresponding small increase in night time heat loss from the air shed, as exiting long wave radiation is less interfered with by the combination of particulate and methane molecules. Greenhouse gases like methane and synthetic GHGs are removed, contributing to localized cooling effects, particularly at night. The impact of this in well mixed air is an 81ppm reduction in the 480 ppm CO2 e warming we currently have on the planet.
GHG removal contributes to the global GHG reduction needed to fight climate change, If we were emitting OH* everywhere, we could lower the planetary temperature by 0.5’C by removing the root cause, not “masking” the problem.
Aged VOC aerosols are whitened and may contribute to cloud brightening or albedo. Black carbon is also lightened in color or brightened.
6% of the OH* will enhance the carbonate buffering system of the clouds, increasing the cloud’s ability to rain out CO2 from the air and have it permanently weathered in the soils.
Odor causing molecules and gases are either made heavier and removed or chemically altered by oxidation and neutralized.
OH* can mix into an inversion layer, react with the aerosols and make rainfall more likely closer to the air shed, which cleans the local air further. It may shorten the lifetime of the inversion layer formations and make the air quality problem associated with them improve by helping aerosols become efficient cloud condensation nuclei, enter the cloud formation more readily, helping clouds more effectively scavenge pollution particles.
Urban air shed ozone levels are lowered.
Mercury, metals, and particles like asbestos are oxidized and removed by wet and dry deposition.
Smoke particle removal will be enhanced.
Industrial emissions of acids, carbon monoxide from vehicles and black carbon will be more oxidized and removed.
OH* recycles in the presence of Nox from combustion, so after release it can go on to protect the wider atmosphere for extended times.