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The relationship between the North Atlantic Oscillation and El Niño‐Southern Oscillation
Author(s) -
Huang Jianping,
Higuchi Kaz,
Shabbar Amir
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/98gl01936
Subject(s) - teleconnection , climatology , north atlantic oscillation , anomaly (physics) , coherence (philosophical gambling strategy) , el niño southern oscillation , oscillation (cell signaling) , atmospheric circulation , geology , quasi biennial oscillation , spectral analysis , atmospheric sciences , general circulation model , oceanography , physics , stratosphere , climate change , spectroscopy , chemistry , biochemistry , quantum mechanics , condensed matter physics
We have applied a multiresolution cross‐spectral analysis technique to resolve the temporal relationship between the NAO and ENSO. The study shows significant coherence between NAO and Niño3 SST in about 70% of the warm ENSO events from 1900 to 1995, of which 33% and 37% are associated with a 5‐ to 6‐year period (E1) and a 2‐ to 4‐year period (E2) oscillation terms in the spectral decomposition, respectively. The dominant teleconnection pattern associated with changes in the mean atmospheric circulation during the initial winter of a typical E1 and E2 events is the positive phase of the Pacific/North American (PNA) pattern. Non‐coherence between the NAO and ENSO occurs during relatively weak Niño3 SST anomaly, with a teleconnection pattern which shows a strong negative phase of the NAO and a pattern which resembles a weak eastward shifted negative phase of the PNA pattern.