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| Titel |
Frequency- or amplitude-dependent effects of the Atlantic meridional overturning on the tropical Pacific Ocean |
| VerfasserIn |
G. J. Oldenborgh, L. A. Raa, H. A. Dijkstra, S. Y. Philip |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 5, no. 3 ; Nr. 5, no. 3 (2009-07-27), S.293-301 |
| Datensatznummer |
250002579
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| Publikation (Nr.) |
 copernicus.org/os-5-293-2009.pdf |
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| Zusammenfassung |
| Using the ECHAM5/MPI-OM model, we study the relation
between the variations in the Atlantic meridional overturning circulation
(AMOC) and both the Pacific sea surface temperature (SST) and the El
Niño-Southern Oscillation (ENSO) amplitude. In a 17-member 20C3M/SRES-A1b
ensemble for 1950–2100 the Pacific response to AMOC variations
on different time scales and amplitudes is considered. The Pacific response
to AMOC variations associated with
the Atlantic Multidecadal Oscillation (AMO) is very small. In a 5-member
hosing ensemble where the AMOC collapses due to a large freshwater anomaly,
the Pacific SST response is large and in agreement with previous work. Our
results show that the modelled connection between AMOC and ENSO depends very
strongly on the frequency and/or the modelled amplitude of the AMOC
variations. Interannual AMOC variations, decadal AMOC variations and an AMOC
collapse lead to entirely different responses in the Pacific
Ocean. |
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