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  Is the observed NAO variability during the instrumental record unusual?

Semenov, V. A., Latif, M., Jungclaus, J. H., & Park, W. (2008). Is the observed NAO variability during the instrumental record unusual? Geophysical Research Letters, 35: L11701. doi:10.1029/2008GL033273.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-F9B8-F Version Permalink: https://hdl.handle.net/21.11116/0000-0007-F7E4-1
Genre: Journal Article

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2008GL033273.pdf (Publisher version), 387KB
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 Creators:
Semenov, V. A.1, Author           
Latif, M., Author           
Jungclaus, J. H.2, Author           
Park, W., Author
Affiliations:
1The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society, ou_913550              
2Director’s Research Group OES, The Ocean in the Earth System, MPI for Meteorology, Max Planck Society, ou_913553              

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 Abstract: Observed multidecadal variability (30 yr running means, trends, and moving standard deviations) of the North Atlantic Oscillation (NAO) during the instrumental record is compared to that simulated by two different coupled general circulation models in extended-range control experiments. Simulated NAO exhibits strong low frequency fluctuations, even on multi-centennial time scale. Observed multi-decadal NAO variations agree well with the model variability. Trend probability distribution functions, observed and simulated, were not found to be different with statistical significance. Thus, multi-decadal NAO changes similar to those observed during the instrumental record, including the recent increase in 1965-1995, may be internally generated within the coupled atmosphere-ocean system without considering external forcing.

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Language(s): eng - English
 Dates: 2008-06
 Publication Status: Issued
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 Identifiers: eDoc: 423505
DOI: 10.1029/2008GL033273
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Title: Geophysical Research Letters
  Alternative Title : Geophys. Res. Letts.
Source Genre: Journal
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Pages: - Volume / Issue: 35 Sequence Number: L11701 Start / End Page: - Identifier: -