Physics
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998georl..25.3859s&link_type=abstract
Geophysical Research Letters, Volume 25, Issue 20, p. 3859-3862
Physics
9
Global Change: Climate Dynamics, Meteorology And Atmospheric Dynamics: Climatology, Meteorology And Atmospheric Dynamics: Paleoclimatology, Information Related To Geographic Region: Europe
Scientific paper
The seasonality of low-frequency temperature variability is studied by application of multichannel singular spectrum analysis to 7 long early-instrumental European temperature records. Focus is on timescales longer than 50 years. We find that the temporal pattern of low-frequency variability is clearly season-dependent. Opposing winter/summer tendencies result in a weak variability on timescales longer than 50 yr in the annual-mean data. Summer temperature variations seem to exhibit a preferential timescale in the range 60-80 years. An oscillation with this timescale is found to be significant against the red noise surrogates when analyzing 4 long European paleo proxy records for summer temperature. The present results stress the necessity of using seasonally homogeneous datasets of paleo proxies for reconstructing low-frequency variability patterns.
Shabalova Marina V.
Weber Susanne L.
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