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Results of PMIP2 coupled simulations of the Mid-Holocene and Last Glacial Maximum - Part 1: experiments and large-scale features
Abstract. A set of coupled ocean-atmosphere simulations using state of the art climate models is now available for the Last Glacial Maximum and the Mid-Holocene through the second phase of the…
Simulating Arctic Climate Warmth and Icefield Retreat in the Last Interglaciation
- B. Otto‐Bliesner, S. Marshall, J. Overpeck, G. Miller, A. Hu
- Environmental Science, GeographyScience
- 24 March 2006
The authors' simulated climate matches paleoclimatic observations of past warming, and the combination of physically based climate and ice-sheet modeling with ice-core constraints indicate that the Greenland Ice Sheet and other circum-Arctic ice fields likely contributed 2.2 to 3.4 meters of sea-level rise during the Last Interglaciation.
Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation
A record of global surface temperature from 80 proxy records is constructed and it is shown that temperature is correlated with and generally lags CO2 during the last deglaciation, supporting the conclusion that an antiphased hemispheric temperature response to ocean circulation changes superimposed on globally in-phase warming driven by increasing CO2 concentrations is an explanation for much of the temperature change at the end of the most recent ice age.
Last Glacial Maximum and Holocene Climate in CCSM3
- B. Otto‐Bliesner, E. Brady, G. Clauzet, R. Tomas, S. Levis, Z. Kothavala
- Environmental Science, Geography
- 1 June 2006
Abstract The climate sensitivity of the Community Climate System Model version 3 (CCSM3) is studied for two past climate forcings, the Last Glacial Maximum (LGM) and the mid-Holocene. The LGM,…
Evaluation of climate models using palaeoclimatic data
There is large uncertainty about the magnitude of warming and how rainfall patterns will change in response to any given scenario of future changes in atmospheric composition and land use. The models…
Transient Simulation of Last Deglaciation with a New Mechanism for Bølling-Allerød Warming
The first synchronously coupled atmosphere-ocean general circulation model simulation from the Last Glacial Maximum to the Bølling-Allerød (BA) warming reproduces several major features of the deglacial climate evolution, suggesting a good agreement in climate sensitivity between the model and observations.
Recent Warming Reverses Long-Term Arctic Cooling
A synthesis of decadally resolved proxy temperature records from poleward of 60°N covering the past 2000 years indicates that a pervasive cooling in progress 2000 years ago continued through the Middle Ages and into the Little Ice Age.
Holocene thermal maximum in the western Arctic (0-180°W)