Premium
Decadal climate oscillations in the Arctic: A new feedback loop for atmosphere‐ice‐ocean interactions
Author(s) -
Mysak Lawrence A.,
Venegas Silvia A.
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 - 10.1029/98gl02782
Subject(s) - subarctic climate , climatology , oscillation (cell signaling) , atmosphere (unit) , sea ice , empirical orthogonal functions , arctic , geology , the arctic , positive feedback , loop (graph theory) , atmospheric sciences , environmental science , oceanography , physics , meteorology , genetics , mathematics , engineering , combinatorics , electrical engineering , biology
A combined complex empirical orthogonal function analysis of 40 years of annual sea ice concentration (SIC) and winter sea level pressure (SLP) data reveals the existence of an approximately 10‐year climate cycle in the Arctic and subarctic. The cycle is characterized by a clockwise propagating signal in the SIC anomalies and a standing oscillation in the SLP anomalies, the latter being linked to a fluctuation between the two phases of the North Atlantic Oscillation. To describe the formation and evolution of the SIC and SLP anomalies associated with the cycle, a simple feedback loop is proposed.