Abstract
The North Atlantic climate system is characterized by considerable interdecadal variability. We show examples of interdecadal variability in Figs. 9.1 and 9.2. One of the main modes of the atmosphere over the North Atlantic is the North Atlantic Oscillation (NAO) (e.g. van Loon and Rogers (1978), Hurrell (1995)). The NAO is a dipole in sea level pressure (SLP), with centers of action near Island and the Azores (Fig. 9.Ib), originally described by Walker (1924) and Walker and Bliss (1932). Hurrell (1995) defined an index of the NAO by the difference of the SLPs measured at Lisbon (Portugal) and Stykkisholmur (Iceland). Its time evolution (Fig. 9.1a) exhibits considerable interdecadal variability, with a maximum during the beginning of this century, a minimum during the 1960s, and strongly increasing values thereafter up to present. Moreover, there are observed fairly regular quasidecadal [O(10 years)] variations during the most recent decades. The relatively strong upward trend observed during the last 20 years which contributed strongly to the rise in mean Northern Hemisphere surface temperature (Hurrell (1996)) has been the matter of intense scientific debate, since it is not clear as to whether this trend reflects greenhouse warming or is simply an expression of interdecadal variability.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2002 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
Latif, M., Timmermann, A., Grötzner, A., Eckert, C., Voss, R. (2002). On North Atlantic Intedecadal Variability: A Stochastic View. In: Pinardi, N., Woods, J. (eds) Ocean Forecasting. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-22648-3_9
Download citation
DOI: https://doi.org/10.1007/978-3-662-22648-3_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-08754-7
Online ISBN: 978-3-662-22648-3
eBook Packages: Springer Book Archive