scholarly journals Variability of the atmospheric circulation in the southern hemisphere during the last glacial maximum

2007 ◽  
Vol 112 (D10) ◽  
Author(s):  
F. Drost ◽  
J. Renwick ◽  
B. Bhaskaran ◽  
H. Oliver ◽  
J. McGregor
Keyword(s):  
Atmospheric Circulation ◽  
Southern Hemisphere ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Last Glacial ◽  
The Last Glacial Maximum ◽  
The Last Glacial

Regional Synthesis of Mediterranean Atmospheric Circulation During the Last Glacial Maximum

Science ◽  
2008 ◽  
Vol 321 (5894) ◽  
pp. 1338-1340 ◽  
Author(s):  
J. Kuhlemann ◽  
E. J. Rohling ◽  
I. Krumrei ◽  
P. Kubik ◽  
S. Ivy-Ochs ◽  
...  
Keyword(s):  
Atmospheric Circulation ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Last Glacial ◽  
The Last Glacial Maximum ◽  
The Last Glacial

scholarly journals Regional atmospheric circulation over Europe during the Last Glacial Maximum and its links to precipitation

2016 ◽  
Vol 121 (5) ◽  
pp. 2130-2145 ◽  
Author(s):  
Patrick Ludwig ◽  
Erik J. Schaffernicht ◽  
Yaping Shao ◽  
Joaquim G. Pinto
Keyword(s):  
Atmospheric Circulation ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Last Glacial ◽  
The Last Glacial Maximum ◽  
The Last Glacial

Southern Hemisphere westerly wind changes during the Last Glacial Maximum: paleo-data synthesis

2013 ◽  
Vol 68 ◽  
pp. 76-95 ◽  
Author(s):  
K.E. Kohfeld ◽  
R.M. Graham ◽  
A.M. de Boer ◽  
L.C. Sime ◽  
E.W. Wolff ◽  
...  
Keyword(s):  
Southern Hemisphere ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Westerly Wind ◽  
Data Synthesis ◽  
Last Glacial ◽  
The Last Glacial Maximum ◽  
The Last Glacial

Alpine Evidence for Atmospheric Circulation Patterns in Europe during the Last Glacial Maximum

2000 ◽  
Vol 54 (3) ◽  
pp. 295-308 ◽  
Author(s):  
Duri Florineth ◽  
Christian Schlüchter
Keyword(s):  
Atmospheric Circulation ◽  
Last Glacial Maximum ◽  
Storm Track ◽  
Polar Front ◽  
Glacial Maximum ◽  
Geological Mapping ◽  
Last Glacial ◽  
The Alps ◽  
The Last Glacial Maximum ◽  
The Last Glacial

The configuration of Alpine accumulation areas during the last glacial maximum (LGM) has been reconstructed using glacial–geological mapping. The results indicate that the LGM ice surface consisted of at least three major ice domes, all located south of the principal weather divide of the Alps. This implies that the buildup of the main Alpine ice cover during oxygen isotope stage (OIS) 2 was related to precipitation by dominant southerly atmospheric circulation, in contrast to today's prevalent westerly airflow. Such a reorganization of the atmospheric circulation is consistent with a southward displacement of the Oceanic Polar Front in the North Atlantic and of the associated storm track to the south of the Alps. These results, combined with additional paleoclimate records from western and southern Europe, allow an interpretation of the asynchronous evolution of the different European ice caps during the last glaciation. δ18O stages (OIS) 4 and 3 were characterized by location of the Polar Front north of 46°N (Gulf of Biscay). This affected prevailing westerly circulation and thus, ice buildup in western Scandinavia, the Pyrénées, Vosges, and northern Alps. At the LGM, however, the Polar Front lay at ∼44°N, causing dominating southerly circulation and reduced precipitation in central and northern Europe.

scholarly journals Southern Hemisphere westerly wind changes during the Last Glacial Maximum: model-data comparison

2013 ◽  
Vol 64 ◽  
pp. 104-120 ◽  
Author(s):  
Louise C. Sime ◽  
Karen E. Kohfeld ◽  
Corinne Le Quéré ◽  
Eric W. Wolff ◽  
Agatha M. de Boer ◽  
...  
Keyword(s):  
Southern Hemisphere ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Westerly Wind ◽  
Model Data ◽  
Last Glacial ◽  
Data Comparison ◽  
The Last Glacial Maximum ◽  
The Last Glacial

scholarly journals Breakdown of the Linear Relationship between the Southern Hemisphere Hadley Cell Edge and Jet Latitude Changes in the Last Glacial Maximum

2020 ◽  
Vol 33 (13) ◽  
pp. 5713-5725
Author(s):  
Seo-Yeon Kim ◽  
Seok-Woo Son
Keyword(s):  
Southern Hemisphere ◽  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Cold Climate ◽  
Hadley Cell ◽  
Last Glacial ◽  
Intercomparison Project ◽  
Mean Circulation ◽  
The Last Glacial Maximum ◽  
The Last Glacial

AbstractA poleward displacement of the Hadley cell (HC) edge and the eddy-driven jet latitude has been observed in the Southern Hemisphere (SH) during the last few decades. This change is further projected to continue in the future, indicating coherent tropical and extratropical zonal-mean circulation changes from the present climate to a warm climate. Here we show that such a systematic change in the zonal-mean circulation change does not hold in a cold climate. By examining the Last Glacial Maximum (LGM), preindustrial (PI), and extended concentration pathway 4.5 (ECP4.5) scenarios archived for phase 3 of the Paleoclimate Modeling Intercomparison Project (PMIP3) and phase 5 of the Coupled Model Intercomparison Project (CMIP5), it is shown that while the annual-mean SH HC edge systematically shifts poleward from the LGM scenario to the PI scenario and then to the ECP4.5 scenario the annual-mean SH eddy-driven jet latitude does not. All models show a poleward jet shift from the PI scenario to the ECP4.5 scenario, but over one-half of the models exhibit no trend or even an equatorward jet shift from the LGM scenario to the PI scenario. This decoupling between the HC edge and jet latitude changes is most pronounced in SH winter when the Antarctic surface cooling in the LGM scenario is comparable to or larger than the tropical upper-tropospheric cooling. This result indicates that polar amplification could play a crucial role in driving the decoupling of the tropical and midlatitude zonal-mean circulation in the SH in a cold climate.

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