Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3124211z&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 24, CiteID L24211
Physics
3
Meteorology And Atmospheric Dynamics: Climatology (1620), Meteorology And Atmospheric Dynamics: General Circulation, Meteorology And Atmospheric Dynamics: Ocean/Atmosphere Interactions (0312, 4504)
Scientific paper
The North Atlantic Oscillation (NAO) has been identified as an important mode of variability in the climate system. Our knowledge of its impacts is based largely on linear analysis techniques. As a result, nonlinearities associated with it are largely unknown. In this study, we use recently proposed nonlinear compositing and one-sided regression techniques as well as a new rectified regression technique to show that the nonlinear expression of the NAO is fundamentally different from its linear expression. In particular, we show that its nonlinear expression is amplitude but not sign dependent and has a center of action in the North Pacific sector that is associated with the East Asia jet stream (EAJS) and the Aleutian Low.
Moore W. K. G.
Zhao Hongxu
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