Author:
Ganguly Auroop R.,Steinhaeuser Karsten,Erickson David J.,Branstetter Marcia,Parish Esther S.,Singh Nagendra,Drake John B.,Buja Lawrence
Abstract
Generating credible climate change and extremes projections remains a high-priority challenge, especially since recent observed emissions are above the worst-case scenario. Bias and uncertainty analyses of ensemble simulations from a global earth systems model show increased warming and more intense heat waves combined with greater uncertainty and large regional variability in the 21st century. Global warming trends are statistically validated across ensembles and investigated at regional scales. Observed heat wave intensities in the current decade are larger than worst-case projections. Model projections are relatively insensitive to initial conditions, while uncertainty bounds obtained by comparison with recent observations are wider than ensemble ranges. Increased trends in temperature and heat waves, concurrent with larger uncertainty and variability, suggest greater urgency and complexity of adaptation or mitigation decisions.
Publisher
Proceedings of the National Academy of Sciences
Reference25 articles.
1. Global and regional drivers of accelerating CO2 emissions
2. Uncertainties in Accounting for CO2From Fossil Fuels
3. IPCC (2007) Fourth Assessment Report: Climate Change 2007 (Cambridge University Press, Cambridge, UK).
4. Hadley Centre (2003) Climate Change: Observations and Predictions (Met Office, Exeter, UK).
5. Nakicenovic N Swart R , eds (2000) Special Report on Emissions Scenarios (Cambridge University Press, Cambridge, UK).
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