|
BORA >
University of Bergen >
Faculty of Mathematics and Natural Sciences >
Geophysical Institute >
Eprints by the Geophysical Institute >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/1956/623
|
| Title: | The North Atlantic Oscillation and greenhouse-gas forcing |
| Authors: | Kuzmina, Svetlana I.
Bengtsson, Lennart
Johannessen, Ola M.
Drange, Helge
Bobylev, Leonid P.
Miles, Martin W. |
| Issue Date: | 17-Feb-2005 |
| Publisher: | American Geophysical Union |
| Series/Report no.: | Geophysical Research Letters;32(2005) L04 |
| Abstract: | The results of 12 coupled climate models participating
in the Coupled Model Intercomparison Project (CMIP2) are
compared together with observational data in order to
investigate: 1) How the current generation of climate
models reproduce the major features of the winter North
Atlantic Oscillation (NAO), and 2) How the NAO intensity
and variability may change in response to increasing
atmospheric CO2 concentration. Long-term changes in the
intensity and spatial position of the NAO nodes (Icelandic
Low and Azores High) are investigated, and different
definitions of the NAO index and the Arctic Oscillation
(AO) are considered. The observed temporal trend in the
NAO in recent decades lies beyond the natural variability
found in the model control runs. For the majority of the
models, there is a significant increase in the NAO trend in
the forced runs relative to the control runs, suggesting that
the NAO may intensify with further increases in
greenhouse-gas concentrations. |
| URI: | http://hdl.handle.net/1956/623 |
| ISSN: | 0094-8276 |
| Appears in Collections: | Eprints by the Geophysical Institute
|
Files in This Item:
| File |
Size | Format |
|---|
| OJohannessen2.pdf | 168Kb | Adobe PDF | View/Open |
|
Show full item record
All items in BORA are protected by copyright, with all rights reserved.
|
