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Politics : Formerly About Advanced Micro Devices
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pocotrader
To: jazzlover2 who wrote (1415452)8/20/2023 8:36:53 PM
From: Wharf Rat1 Recommendation  Read Replies (1) of 1577986
 
Doing nothing is scenario A. We've been tracking B.
What do we learn from James Hansen's 1988 prediction?
In 1988, James Hansen projected future warming trends. He used 3 different scenarios, identified as A, B, and C. Each represented different levels of greenhouse gas emissions. Scenario A assumed greenhouse gas emissions would continue to accelerate. Scenario B assumed a slowing and eventually constant rate of growth. Scenario C assumed a rapid decline in greenhouse gas emissions around the year 2000. The actual greenhouse gas emissions since 1988 have been closest to Scenario B. As shown below, the actual warming has been less than Scenario B.


Figure 1: Global surface temperature computed for scenarios A, B, and C, compared with observational data
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