Stratospheric aerosol injection scenarios (IMAGE)

Indiana University

Stratospheric aerosol injection scenarios

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Researchers compared net ice accumulation in Antarctica for multiple stratospheric aerosol injection (SAI) scenarios and a moderate emissions scenario with no SAI to historical levels between 1990-2009. Blue indicates a net gain in ice accumulation, while red indicates a net loss. Small dots indicate regions where no significant change is projected. The time period of comparison for the SAI scenarios and the moderate emissions scenario is 2050-2069.

Scenario abbreviations: HIST (historical date from 1990-2009); SSP2-4.5 (moderate emissions scenario with no SAI); 30N-ANN (SAI at 30°N annually); EQ-ANN (SAI at the equator annually); 30S-ANN (SAI at 30°S annually); Global +1.0 (SAI at 30°N 30°N, 15°N, 15°S, 30°S annually), Polar +1.0 (SAI at 60°N, 60°S during the boreal spring and austral spring).

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Photo courtesy Indiana University

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