Re:Monday was hottest day for global average temperature, as...
by philipkglass on Tuesday July 04, 2023 @05:51PM
(#36592972)
Carbon dioxide takes 20+ years to reach the stratosphere? Gases with higher molecular weights like halogenated ozone depleting substances reach the stratosphere in no more than 5 years:
Ozone depleting substances that release chlorine include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), carbon tetrachloride, and methyl chloroform. ODS that release bromine include halons and methyl bromide. Although ODS are emitted at the Earth’s surface, they are eventually carried into the stratosphere in a process that can take as long as two to five years.
I would expect gases with a lower molecular weight to blend into the homosphere even faster.
https://www.epa.gov/ozone-layer-protection/basic-ozone-layer...
Ozone depleting substances that release chlorine include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), carbon tetrachloride, and methyl chloroform. ODS that release bromine include halons and methyl bromide. Although ODS are emitted at the Earth’s surface, they are eventually carried into the stratosphere in a process that can take as long as two to five years.
I would expect gases with a lower molecular weight to blend into the homosphere even faster.