Water vapor is wore greenhouse gqs than CO2. The Tonga volcano is expected to add 10% to water vapor in the stratosphere and it will las several years.
First and foremost, The largest concentration of greenhouse gas is water vapor. CO2 is a fly fart in comparison. I no longer have access to upper air data like when I was employed but I can say this with reasonable certainty, where ever the winds aloft take that 10% excess moisture will probably have a nice rainy season. Maybe too nice,
PJ