5 ms·

I would imagine that a column of soot-containing air is more conductive if it contains oxides of sulfur than if it does not. The same electrical potential may

I would imagine that a column of soot-containing air is more conductive if it contains oxides of sulfur than if it does not. The same electrical potential may still be present in the clouds, but instead of being neutralized dramatically it could now be dissipating slowly rather than gone in a flash :) More study would be good to have.

schiffern 1y ago
The proposed mechanism would cause more lightning, not less. I expect it's related to how lightning is triggered, not changes in atmospheric charge due to conductivity.
- CheeseFromLidl 1y ago
  Maybe there’s a parasitic bipolar transistor in the atmosphere, with sulphur acting as a doping that reduced the threshold for latchup.
  - schiffern 1y ago
    Maybe so, but honestly that seems just as contrived. Surely we should be looking for the atmospheric science nerds to be chiming in here, not the computer engineering or EE nerds? Problem is, atmospheric science isn't exactly considered "high status" vs the other two.
deleted 1y ago
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hopelite 1y ago
> The same electrical potential may still be present in the clouds, but instead of being neutralized dramatically it could now be dissipating slowly rather than gone in a flash That was my initial thought, like a “phantom power” drain, the process by which electrons knock each other is able to happen in a broad manner, not concentrated in the poles and suddenly discharging among a single path, i.e., lightning. It seems similar to how static electricity builds up easier in dry environments because in humid ones the electrons can more easily equalize across water molecules.
scythe 1y ago
>The same electrical potential may still be present in the clouds I wouldn't jump to this lemma so quickly. The paper mentions the density of aerosols. Sulfur oxides promote condensation by forming low-volatility compounds like H2SO3 and H2SO4. An increase in the number density of droplets could mean more triboelectric charge transfer between the droplets and the air. That would increase the amount of electric energy in the clouds. This is also the mechanism by which sulfur has been proposed for geoengineering, but I think the variant that replaces sulfur with terpenes sounds safer.
- lazide 1y ago
  Yeah, nothing could go wrong with actively engineering more acid rain.
xattt 1y ago
A little tangential, but I wonder if the decrease in ball lightning sightings is related to a decrease in particulate matter in the atmosphere as a result of less open-flame burning (hearths and whatnot).

schiffern 1y ago

The proposed mechanism would cause more lightning, not less. I expect it's related to how lightning is triggered, not changes in atmospheric charge due to conductivity.

CheeseFromLidl 1y ago
Maybe there’s a parasitic bipolar transistor in the atmosphere, with sulphur acting as a doping that reduced the threshold for latchup.
- schiffern 1y ago
  Maybe so, but honestly that seems just as contrived. Surely we should be looking for the atmospheric science nerds to be chiming in here, not the computer engineering or EE nerds? Problem is, atmospheric science isn't exactly considered "high status" vs the other two.

deleted 1y ago

[deleted]

hopelite 1y ago

> The same electrical potential may still be present in the clouds, but instead of being neutralized dramatically it could now be dissipating slowly rather than gone in a flash That was my initial thought, like a “phantom power” drain, the process by which electrons knock each other is able to happen in a broad manner, not concentrated in the poles and suddenly discharging among a single path, i.e., lightning. It seems similar to how static electricity builds up easier in dry environments because in humid ones the electrons can more easily equalize across water molecules.

scythe 1y ago

>The same electrical potential may still be present in the clouds I wouldn't jump to this lemma so quickly. The paper mentions the density of aerosols. Sulfur oxides promote condensation by forming low-volatility compounds like H2SO3 and H2SO4. An increase in the number density of droplets could mean more triboelectric charge transfer between the droplets and the air. That would increase the amount of electric energy in the clouds. This is also the mechanism by which sulfur has been proposed for geoengineering, but I think the variant that replaces sulfur with terpenes sounds safer.

lazide 1y ago
Yeah, nothing could go wrong with actively engineering more acid rain.

xattt 1y ago

A little tangential, but I wonder if the decrease in ball lightning sightings is related to a decrease in particulate matter in the atmosphere as a result of less open-flame burning (hearths and whatnot).