Evaluating highly resolved paleoclimate records in the frequency domain for multidecadal-scale climate variability

Details Evaluating highly resolved paleoclimate records in the frequency domain for multidecadal-scale climate variability Evaluating highly resolved paleoclimate records in the frequency domain for multidecadal-scale climate variability

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3620702d&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 20, CiteID L20702

Statistics

Computation

Paleoceanography: General Or Miscellaneous, Mathematical Geophysics: Time Series Analysis (1872, 4277, 4475), Computational Geophysics: Data Analysis: Algorithms And Implementation, Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Mathematical Geophysics: Spectral Analysis (3205, 3280)

Scientific paper

Do the chronological methods used in the construction of paleoclimate records influence the results of the frequency analysis applied to them? We explore this phenomenon using the Dongge Cave speleothem record (U-series chronology with variable time steps, Δt) and the El Malpais tree-ring index (cross-dating of ring-width series). Interpolation of the Dongge Cave record to a constant Δt resulted in the suppression of periodicities (<20 years) altering the red noise model used for significance testing. Frequency analysis of temporal subsets of the El Malpais tree-ring index revealed that concentrations of variance varied with the number of ring-width series. Frequency analyses of these records identified significant periodicities, some common to both (˜25 and ˜69 years). Cross-wavelet analysis, which examines periodicities in the time domain, revealed that coherency between these records occurs intermittently. We found the chronology methods can influence the ability of frequency analysis to detect periodicities and tests for coherency.

Affiliated with

Also associated with

No associations

Rating

Evaluating highly resolved paleoclimate records in the frequency domain for multidecadal-scale climate variability does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evaluating highly resolved paleoclimate records in the frequency domain for multidecadal-scale climate variability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evaluating highly resolved paleoclimate records in the frequency domain for multidecadal-scale climate variability will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1514130