Premium
The glacial North Atlantic Oscillation
Author(s) -
Justino Flávio,
Peltier W. Richard
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2005gl023822
Subject(s) - atlantic multidecadal oscillation , glacial period , last glacial maximum , climatology , north atlantic oscillation , geology , oscillation (cell signaling) , general circulation model , mode (computer interface) , atmosphere (unit) , oceanography , climate change , geography , meteorology , geomorphology , biology , computer science , genetics , operating system
Based upon coupled climate simulations driven by present day and glacial boundary conditions, we demonstrate that the glacial North Atlantic Oscillation was characterized by four distinct centres of action and thus by an atmospheric circulation that differed radically in terms of its internal variability from modern conditions. Moreover, we show that although simulated modern climate supports a coupled atmosphere‐ocean mode characterized by a timescale near 30 years (so‐called Atlantic Multidecadal Oscillation, AMO), this mode is predicted to be absent under LGM conditions.