Spectrum: spectral analysis of unevenly spaced paleoclimatic time series

Schulz, Michael; Stattegger, Karl

doi:10.1016/s0098-3004(97)00087-3

Cited by 449 publications

(313 citation statements)

References 20 publications

Supporting

Mentioning

303

Contrasting

Unclassified

Order By: Relevance

“…Cross-spectral analysis of each paired d 18 O time series was performed using the computer package SPECTRUM 48 . We used a Welch-type spectral window, with a number of overlapping (50%) segments (n seg ) of 5.…”

Section: Methodsmentioning

confidence: 99%

Paired oxygen isotope records reveal modern North American atmospheric dynamics during the Holocene

et al. 2014

View full text Add to dashboard Cite

The Pacific North American (PNA) teleconnection has a strong influence on North American climate. Instrumental records and century-scale reconstructions indicate an accelerating tendency towards the positive PNA state since the mid-1850s, but much less is known about long-term PNA variability. Here we reconstruct PNA-like climate variability during the mid-and late Holocene using paired oxygen isotope records from two regions in North America with robust, anticorrelated isotopic response to the modern PNA. We identify mean states of more negative and positive PNA-like climate during the mid-and late Holocene, respectively. Superimposed on the secular change between states is a robust, quasi-200-year oscillation, which we associate with the de Vries solar cycle. These findings suggest the persistence of PNA-like climate variability throughout the mid-and late Holocene, provide evidence for modulation of PNA over multiple timescales and may help researchers de-convolve PNA pattern variation from other factors reflected in palaeorecords.

show abstract

Section: Methodsmentioning

confidence: 99%

Paired oxygen isotope records reveal modern North American atmospheric dynamics during the Holocene

et al. 2014

View full text Add to dashboard Cite

show abstract

“…periodic) components Davis, 1991, 2002;Hamilton, 1994). Prominent examples that are frequently used for the analysis of realworld time series, including such obtained from geological archives (Schulz and Stattegger, 1997;Schulz and Mudelsee, 2002;Mudelsee et al, 2009;Rehfeld et al, 2011), are correlation functions and power spectra. On the other hand, nonlinear methods follow a dynamical systems point of view, implicitly assuming the presence of certain types of deterministic behaviour Kantz and Schreiber, 1997;Donner and Barbosa, 2008).…”

Section: Introductionmentioning

confidence: 99%

Identification of dynamical transitions in marine palaeoclimate records by recurrence network analysis

Donges

Donner

Rehfeld

et al. 2011

Nonlin. Processes Geophys.

View full text Add to dashboard Cite

Abstract. The analysis of palaeoclimate time series is usually affected by severe methodological problems, resulting primarily from non-equidistant sampling and uncertain age models. As an alternative to existing methods of time series analysis, in this paper we argue that the statistical properties of recurrence networks -a recently developed approach -are promising candidates for characterising the system's nonlinear dynamics and quantifying structural changes in its reconstructed phase space as time evolves. In a first order approximation, the results of recurrence network analysis are invariant to changes in the age model and are not directly affected by non-equidistant sampling of the data. Specifically, we investigate the behaviour of recurrence network measures for both paradigmatic model systems with non-stationary parameters and four marine records of long-term palaeoclimate variations. We show that the obtained results are qualitatively robust under changes of the relevant parameters of our method, including detrending, size of the running window used for analysis, and embedding delay. We demonstrate that recurrence network analysis is able to detect relevant regime shifts in synthetic data as well as in problematic geoscientific time series. This suggests its application as a general exploratory tool of time series analysis complementing existing methods.

show abstract

“…The fit subroutine of TAUEST was also combined with the SPECTRUM frequency-analysis package for unevenly spaced data (Schulz and Stattegger, 1997) to quantify the analogue of persistence in the frequency domainFred noise (Schulz and Mudelsee, 2002).…”

Section: Introductionmentioning

confidence: 99%

TAUEST: a computer program for estimating persistence in unevenly spaced weather/climate time series

Mudelsee

2002

Computers & Geosciences

View full text Add to dashboard Cite

Spectrum: spectral analysis of unevenly spaced paleoclimatic time series

Cited by 449 publications

References 20 publications

Paired oxygen isotope records reveal modern North American atmospheric dynamics during the Holocene

Paired oxygen isotope records reveal modern North American atmospheric dynamics during the Holocene

Identification of dynamical transitions in marine palaeoclimate records by recurrence network analysis

TAUEST: a computer program for estimating persistence in unevenly spaced weather/climate time series

Contact Info

Product

Resources

About