scholarly journals A spatial reconstruction of Siberian Last Glacial Maximum climate from pollen data

2020 ◽  
Author(s):  
Nils Weitzel ◽  
Andreas Hense ◽  
Ulrike Herzschuh ◽  
Thomas Böhmer ◽  
Xianyong Cao ◽  
...  
Keyword(s):  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Pollen Data ◽  
Last Glacial ◽  
Spatial Reconstruction ◽  
Last Glacial Maximum Climate

scholarly journals Climate of the last glacial maximum: sensitivity studies and model-data comparison with the LOVECLIM coupled model

2006 ◽  
Vol 2 (6) ◽  
pp. 1105-1153 ◽  
Author(s):  
D. M. Roche ◽  
T. M. Dokken ◽  
H. Goosse ◽  
H. Renssen ◽  
S. L. Weber
Keyword(s):  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Future Climate Change ◽  
Oceanic Circulation ◽  
Coupled Models ◽  
Proxy Data ◽  
Last Glacial ◽  
The Last Glacial Maximum ◽  
Last Glacial Maximum Climate ◽  
The Last Glacial

Abstract. The Last Glacial Maximum climate is one of the classic benchmarks used both to test the ability of coupled models to simulate climates different from that ot the present-day and to better understand the possible range of mechanisms that could be involved in future climate change. It also bears the advantage of being one of the most well documented periods with respect to palaeoclimatic records, allowing a thorough data-model comparison. We present here an ensemble of Last Glacial Maximum climate simulations obtained with the Earth System model LOVECLIM, including coupled dynamic atmosphere, ocean and vegetation components. The climate obtained using standard parameter values is then compared to available proxy data for the surface ocean, vegetation, oceanic circulation and atmospheric conditions. Interestingly, the oceanic circulation obtained resembles that of the present-day, but with increased overturning rates. As this result is in contradiction with the "classic" palaeoceanographic view, we ran a range of sensitivity experiments to explore the response of the model and the possibilities for other oceanic circulation states. After a critical review of our LGM state with respect to available proxy data, we conclude that the balance between water masses obtained is consistent with the available data although the specific characteristics (temperature, salinity) are not in full agreement. The consistency of the simulated state is further reinforced by the fact that the mean surface climate obtained is shown to be generally in agreement with the most recent reconstructions of vegetation and sea surface temperatures, even at regional scales.

Impact of a realistic river routing in coupled ocean–atmosphere simulations of the Last Glacial Maximum climate

2007 ◽  
Vol 30 (7-8) ◽  
pp. 855-869 ◽  
Author(s):  
Ramdane Alkama ◽  
M. Kageyama ◽  
G. Ramstein ◽  
O. Marti ◽  
P. Ribstein ◽  
...  
Keyword(s):  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Last Glacial ◽  
Ocean Atmosphere ◽  
The Last Glacial Maximum ◽  
Last Glacial Maximum Climate ◽  
The Last Glacial ◽  
River Routing

A Simulation of the Last Glacial Maximum climate using the NCAR-CCSM

2003 ◽  
Vol 20 (2) ◽  
pp. 127-151 ◽  
Author(s):  
S.-I. Shin ◽  
Z. Liu ◽  
B. Otto-Bliesner ◽  
E. Brady ◽  
J. Kutzbach ◽  
...  
Keyword(s):  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Last Glacial ◽  
The Last Glacial Maximum ◽  
Last Glacial Maximum Climate ◽  
The Last Glacial
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