Glacial cooling and climate sensitivity revisited

@article{Tierney2020GlacialCA,
  title={Glacial cooling and climate sensitivity revisited},
  author={Jessica E. Tierney and Jiang Zhu and Jonathan King and Steven B. Malevich and Gregory J. Hakim and Christopher J. Poulsen},
  journal={Nature},
  year={2020},
  volume={584},
  pages={569 - 573}
}
The Last Glacial Maximum (LGM), one of the best studied palaeoclimatic intervals, offers an excellent opportunity to investigate how the climate system responds to changes in greenhouse gases and the cryosphere. Previous work has sought to constrain the magnitude and pattern of glacial cooling from palaeothermometers1,2, but the uneven distribution of the proxies, as well as their uncertainties, has challenged the construction of a full-field view of the LGM climate state. Here we combine a… Expand

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References

SHOWING 1-10 OF 99 REFERENCES
How cold was the Last Glacial Maximum
[1] We present a new approach to estimate the magnitude of global-mean cooling (dTLGM) at the Last Glacial Maximum (LGM) relative to the pre-industrial climate, by combining an ensemble of coupledExpand
Mean global ocean temperatures during the last glacial transition
TLDR
This reconstruction provides unprecedented precision and temporal resolution for the integrated global ocean, in contrast to the depth-, region-, organism- and season-specific estimates provided by other methods, and finds that the mean global ocean temperature is closely correlated with Antarctic temperature and has no lead or lag with atmospheric CO2. Expand
Using Late Pleistocene sea surface temperature reconstructions to constrain future greenhouse warming
Abstract Future greenhouse warming projections conducted with coupled climate models still exhibit a substantial spread in response to a given anthropogenic greenhouse gas concentration scenario. InExpand
Climate Sensitivity Estimated from Temperature Reconstructions of the Last Glacial Maximum
TLDR
Combining extensive sea and land surface temperature reconstructions from the Last Glacial Maximum with climate model simulations suggests a lower median and reduced uncertainty, which implies a lower probability of imminent extreme climatic change than previously thought. Expand
Constraints on the magnitude and patterns of ocean cooling at the Last Glacial Maximum
Observation-based reconstructions of sea surface temperature from relatively stable periods in the past, such as the Last Glacial Maximum, represent an important means of constraining climateExpand
Nonlinear climate sensitivity and its implications for future greenhouse warming
TLDR
The range of paleo-based estimates of Earth’s future warming by 2100 CE overlaps with the upper range of climate simulations conducted as part of the Coupled Model Intercomparison Project Phase 5 (CMIP5). Expand
How well do simulated last glacial maximum tropical temperatures constrain equilibrium climate sensitivity
Previous work demonstrated a significant correlation between tropical surface air temperature and equilibrium climate sensitivity (ECS) in PMIP (Paleoclimate Modelling Intercomparison Project) phaseExpand
What caused Earths temperature variations during the last 800,000 years? Data-based evidences on radiative forcing and constraints on climate sensitivity
The temperature on Earth varied largely in the Pleistocene from cold glacials to warmer than present interglacials. To contribute to an understanding of the underlying causes of these changes weExpand
EPICA Dome C record of glacial and interglacial intensities
Abstract Climate models show strong links between Antarctic and global temperature both in future and in glacial climate simulations. Past Antarctic temperatures can be estimated from measurements ofExpand
Modest global-scale cooling despite extensive early Pleistocene ice sheets
Abstract Expanded continental ice sheets and lowered greenhouse gases were the major radiative perturbations at the Last Glacial Maximum (LGM), and while they had similar magnitudes when averagedExpand
...
1
2
3
4
5
...