Observed positive feedback between the NAO and the North Atlantic SSTA tripole

Details Observed positive feedback between the NAO and the North Atlantic SSTA tripole Observed positive feedback between the NAO and the North Atlantic SSTA tripole

Mar 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3206707p&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 6, CiteID L06707

Physics

7

Global Change: Atmosphere (0315, 0325), Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions (0426, 1610), Atmospheric Processes: Climatology (1616, 1620, 3305, 4215, 8408), Atmospheric Composition And Structure: Air/Sea Constituent Fluxes (3339, 4504)

Scientific paper

NCEP-NCAR reanalysis data from 1948 to 2001 are used to examine the relationship between the North Atlantic Oscillation (NAO) and the North Atlantic sea surface temperature anomaly (SSTA) tripole. It is demonstrated that the atmospheric anomalies associated with NAO produce tripole-like sea surface temperature (SST) anomalies; in turn, the SSTA tripole produces NAO-like atmospheric anomalies. Therefore, a positive feedback between the NAO and the SSTA tripole is suggested. The results are statistically significant; they clarify prior uncertainties associated with the relationship between the NAO and the North Atlantic SSTA tripole.

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