Geoengineering Consists of a Suite of Widely Debated Proposals to Mitigate

question 121

Multiple Choice

Geoengineering consists of a suite of widely debated proposals to mitigate global warming by actively managing Earth's radiation budget or greenhouse gas concentrations. Nobel laureate Paul Crutzen has proposed injecting sulfate aerosols into the stratosphere, which would reflect more incoming solar radiation away from the Earth, decreasing surface temperatures. Imagine we adopted this strategy for 100 years and then stopped. How would climate react at the end of the experiment?

• A)Cooler surface temperatures achieved during the experiment would be maintained over long time intervals.
• B)Cooler temperatures would continue, but only until CO₂ regained its level in the atmosphere prior to the experiment..
• C)Temperature would quickly return to the increasing trajectory established before the experiment started.
• D)This question can't be answered without additional information.

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