“ Climate Sensitivity Estimated From Temperature Reconstructions of the Last Glacial
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چکیده
The UVic Earth System Climate Model (version 2.8 with parameters as described in detail in (28)) includes a three-dimensional ocean general circulation model, a dynamicthermodynamic sea ice model, a simple one-layer energy-moisture balance model of the atmosphere as well as land-surface and dynamic terrestrial vegetation components at a resolution of 1.8°×3.6° with 19 vertical levels in the ocean. Since vegetation is allowed to respond dynamically to changes in climate and CO2 concentrations, it is treated as an internal interactive feedback, rather than as part of the prescribed forcing as in previous studies without interactive vegetation.
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Comment on "Climate sensitivity estimated from temperature reconstructions of the Last Glacial Maximum".
Schmittner et al. (Reports, 9 December 2011, p. 1385) report a new, low estimate of equilibrium climate sensitivity based on a comparison of Last Glacial Maximum climate model simulations and paleoproxy data. Here, we show that exclusion of questionable comparison points and constructive changes to model design are both likely capable of altering the most probable value of equilibrium climate s...
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