Results of recent climate models suggest that projected greenhouse gas emission patterns may lead to a global warming of 1.4 to 5.8 degrees Celsius during _____.

Question

BlackTom AI · Accepted Answer

The question asks about the time horizon associated with projected warming of 1.4 to 5.8 degrees Celsius based on recent climate models.
Option 1: 'The next 100 years' — Climate models commonly project this broad warming range over multi-decade to century timescales, aligning with scenarios that look out roughly a century into the future. This reflects long-term trends driven by cumulative greenhouse gas emissions rather than short-term fluctuations.
Option 2: 'The next five years' — Five-year horizons are too short to capture the full response of the climate system to rising greenhouse gases, and the 1.4 to 5.8 C range over such a brief period would be unlikely given inertia in ocean heat uptake and atmospheric processes. Short-term variability (e.g., ENSO) can cause fluctuations, but not a persistent 1.4–5.8 C trajectory.
Option 3: 'The next 20 years' — While twenty-year windows are used in some projections, the specified warming range typically emerges when considering longer-term scenarios that extend into the latter half of the century, rather than two decades, where mid-century values are usually discussed in a narrower band and often lower than the upper end of 5.8 C depending on emissions.
In summary, the match between a broad, multi-decade to century-scale warming range and the given data is strongest when considering a horizon long enough to reflect cumulative emissions and climate inertia, rather than very short timeframes. The option that best fits this context represents a century-scale outlook, rather than a five-decade or two-decade window.

EGEE 102 (SP25): Energy Conservation for Environmental Protection FINAL EXAM

Results of recent climate models suggest that projected greenhouse gas emission patterns may lead to a global warming of 1.4 to 5.8 degrees Celsius during _____.

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