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Winter Northern Hemisphere surface air temperature variability associated with the Arctic Oscillation and North Atlantic Oscillation
Author(s) -
Wang Dongxiao,
Wang Chunzai,
Yang Xiaoyi,
Lu Jian
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 - 10.1029/2005gl022952
Subject(s) - north atlantic oscillation , arctic oscillation , climatology , northern hemisphere , geopotential height , stratosphere , arctic dipole anomaly , sea surface temperature , oscillation (cell signaling) , atlantic multidecadal oscillation , surface air temperature , troposphere , environmental science , arctic , the arctic , geopotential , atmospheric temperature , atmospheric sciences , geology , oceanography , geography , climate change , precipitation , sea ice , arctic ice pack , meteorology , biology , genetics , drift ice
The interannual variability of winter surface air temperature (SAT) in the Northern Hemisphere (NH) associated with the Arctic Oscillation (AO) and the North Atlantic Oscillation (NAO) is studied. The AO and the NAO show different impacts on winter NH SAT variations. The AO affects the SAT over the Euro‐Asian and African continents, whereas the NAO is more regional with the major effect on the SAT in the western North Africa. This discrepancy can be reflected in other atmospheric variables such as sea level pressure and geopotential height fields as well. The analyses in this paper also suggest that the AO‐related signal can penetrate deeply into the stratosphere while the NAO one is largely a tropospheric phenomenon.