Which feedback mechanism temporarily decreases stratospheric sulfate aerosol concentration after a large plinian eruption?

💡 Explanation

ENSO modulates tropical upwelling; diminished upwelling decreases aerosol residence time, because it weakens the Brewer-Dobson circulation transporting aerosols poleward. Therefore, concentration decreases following the event, rather than increasing caused by other aerosol transport mechanisms.

• Which environmental outcome on a lagoon side can occur when a newly formed barrier island's vegetation density increases at a high rate?
• Which mechanism causes enhanced coastal upwelling during eastern boundary current shoaling?
• Which outcome results from increased coastal upwelling near arid desert regions bordering the ocean?
• Which risk increases when ice mass loss steepens cirque walls?
• Which outcome generally occurs due to increased pore water pressure during high intensity seismic activity?
• What outcome significantly diminishes agricultural yields after a large eruption?