Large-scale features of Pliocene climate: results from the Pliocene Model Intercomparison Project
Climate and environments of the mid-Pliocene warm period (3.264 to 3.025 Ma) have been extensively studied. Whilst numerical models have shed light on the nature of climate at the time, uncertainties…
A hemispheric mechanism for the atlantic multidecadal oscillation
Abstract The physical processes associated with the ∼70-yr period climate mode, known as the Atlantic multidecadal oscillation (AMO), are examined. Based on analyses of observational data, a…
Towards quantitative sea ice reconstructions in the northern North Atlantic: A combined biomarker and numerical modelling approach
Increased seasonality in Middle East temperatures during the last interglacial period
From coral records and simulations with a coupled atmosphere–ocean circulation model, it is concluded that a tendency towards the high-index state of the North Atlantic Oscillation during the last interglacial period contributed to the larger amplitude of the seasonal cycle in the Middle East.
Abrupt glacial climate shifts controlled by ice sheet changes
It is shown, by using a comprehensive fully coupled model, that gradual changes in the height of the Northern Hemisphere ice sheets (NHISs) can alter the coupled atmosphere–ocean system and cause rapid glacial climate shifts closely resembling DO events.
Coupling of millennial‐scale changes in sea surface temperature and precipitation off northeastern Brazil with high‐latitude climate shifts during the last glacial period
- A. Jaeschke, C. Rühlemann, H. Arz, G. Heil, G. Lohmann
- Environmental Science, Geography
- 1 December 2007
 High-resolution records of alkenone-derived sea surface temperatures and elemental Ti/Ca ratios from a sediment core retrieved off northeastern Brazil (4°S) reveal short-term climate variability…
Holocene and Eemian sea surface temperature trends as revealed by alkenone and Mg/Ca paleothermometry
Radiocarbon simulations for the glacial ocean: The effects of wind stress, Southern Ocean sea ice and Heinrich events
The Holocene temperature conundrum
- Zhengyu Liu, Jiang Zhu, Oliver Elison Timm
- Environmental Science, GeographyProceedings of the National Academy of Sciences
- 11 August 2014
It is shown that climate models simulate a robust global annual mean warming in the Holocene, mainly in response to rising CO2 and the retreat of ice sheets, and this model-data inconsistency demands a critical reexamination of both proxy data and models.