Northern Hemisphere patterns of phase coherence between solar/geomagnetic activity and NCEP/NCAR and ERA40 near-surface air temperature in period 7–8 years oscillatory modes

Beginning from the 1950's, Paluš and Novotná (2009) observed statistically significant phase coherence among oscillatory modes with the period of approximately 7–8 years detected in monthly time series of sunspot numbers, geomagnetic activity aa index, North Atlantic Oscillation (NAO) index and...

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Bibliographic Details
Published in:Nonlinear Processes in Geophysics
Main Authors: M. Paluš, D. Novotná
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2011
Subjects:
Science
Q
Physics
QC1-999
Geophysics. Cosmic physics
QC801-809
North Atlantic
North Atlantic oscillation
Online Access:https://doi.org/10.5194/npg-18-251-2011
https://doaj.org/article/5e962c9b8b0d466caf6ec0c4f1734fbb
Description
Summary:Beginning from the 1950's, Paluš and Novotná (2009) observed statistically significant phase coherence among oscillatory modes with the period of approximately 7–8 years detected in monthly time series of sunspot numbers, geomagnetic activity aa index, North Atlantic Oscillation (NAO) index and near-surface air temperature from several mid-latitude European stations. Focusing on geographical distribution of the phenomenon we study Northern Hemisphere patterns of phase coherence between solar/geomagnetic activity and NCEP/NCAR and ERA40 near-surface air temperature. Both the reanalysis datasets provide consistent patterns of areas with marked phase coupling between solar/geomagnetic activity and climate variability observed in continuous monthly data, independent of the season, however, confined to the temporal scale related to the oscillatory periods about 7–8 years.

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