Sulfur aerosols is not the same as Chlorine particles though, yes? We were talking about chlorine particles affecting the ozone and I was saying those from volcanoes don't even get to the stratosphere. If you read my link, you would've seen this:
It's about halflife and chemical reactions that are unique to that gas. You can't expect the same thing to happen to different types of gasses. And sorry, I misspoke, I should have said volcanic sources of chlorine do not reach the stratosphere. That is empirically shown in the link I've shown you, it's not a deduction.
As for sulfur aerosols, they have an overall cooling effect and they do not deplete the ozone. Which is why I said volcanoes emit aerosols that are largely cooling if you go back up a few posts, this is what I meant. They're even talking about actively pumping this into the atmosphere, something called climate engineering.
Quote:First, the vast majority of volcanic eruptions are too weak to reach the stratosphere, around 10 km above the surface. Thus, any HCl emitted in the eruption begins in the troposphere. Sea salt from the oceans is also released very low in the atmosphere. These compounds would have to remain airborne for 2-5 years to be carried to the stratosphere. However, both sea salt and HCl are extremely soluble in water, as opposed to CFCs which do not dissolve in water. Rain effectively scrubs the troposphere, removing both of these forms of chlorine. Steam in volcanic plumes can act the same way, removing HCl long before it reaches the ozone layer. Measurements have shown that concentrations of these substances vanish very rapidly as altitude increases. Neither sea salt from the oceans nor tropospheric-level volcanic eruptions (like Mt. Erebus in Antarctica) contribute significantly to stratospheric chlorine levels. Some sea life does produce methyl chloride, a more stable form of chlorine than sea salt, but its contribution is small, as explained below. The following graphic shows that natural sources only contribute 15% of methyl chloride to stratospheric chlorine levels, and natural sources of HCl contribute only 3%. The remaining sources of stratospheric chlorine are entirely human-made .
It's about halflife and chemical reactions that are unique to that gas. You can't expect the same thing to happen to different types of gasses. And sorry, I misspoke, I should have said volcanic sources of chlorine do not reach the stratosphere. That is empirically shown in the link I've shown you, it's not a deduction.
As for sulfur aerosols, they have an overall cooling effect and they do not deplete the ozone. Which is why I said volcanoes emit aerosols that are largely cooling if you go back up a few posts, this is what I meant. They're even talking about actively pumping this into the atmosphere, something called climate engineering.
