Discussion
Consider the following statements about solar geoengineering.
1. It would address the symptom rather than the cause.
2. Ocean acidification would continue unabated.
3. It would be a permanent solution once deployed.
Answer: A
Correct answer: 1 and 2 only
Statements 1 and 2 are correct: it addresses the symptom, and because the carbon dioxide remains, the ocean continues to absorb it and acidify regardless. Statement 3 is the opposite of the truth - the aerosol falls out within a couple of years, so the cooling must be sustained indefinitely, and stopping it after decades would release the accumulated warming very rapidly. That termination shock is the strongest argument against relying on it.
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