Arctic air temperature change amplification and the Atlantic Multidecadal Oscillation
Article first published online: 16 JUL 2009
Copyright 2009 by the American Geophysical Union.
Geophysical Research Letters
Volume 36, Issue 14, July 2009
How to Cite
2009), Arctic air temperature change amplification and the Atlantic Multidecadal Oscillation, Geophys. Res. Lett., 36, L14801, doi:10.1029/2009GL038777., , , , and (
- Issue published online: 16 JUL 2009
- Article first published online: 16 JUL 2009
- Manuscript Accepted: 9 JUN 2009
- Manuscript Revised: 23 MAY 2009
- Manuscript Received: 19 APR 2009
- Arctic amplification;
- Atlantic Multidecadal Oscillation;
- climate change
 Understanding Arctic temperature variability is essential for assessing possible future melting of the Greenland ice sheet, Arctic sea ice and Arctic permafrost. Temperature trend reversals in 1940 and 1970 separate two Arctic warming periods (1910–1940 and 1970–2008) by a significant 1940–1970 cooling period. Analyzing temperature records of the Arctic meteorological stations we find that (a) the Arctic amplification (ratio of the Arctic to global temperature trends) is not a constant but varies in time on a multi-decadal time scale, (b) the Arctic warming from 1910–1940 proceeded at a significantly faster rate than the current 1970–2008 warming, and (c) the Arctic temperature changes are highly correlated with the Atlantic Multi-decadal Oscillation (AMO) suggesting the Atlantic Ocean thermohaline circulation is linked to the Arctic temperature variability on a multi-decadal time scale.