WebJun 1, 2016 · The REDFIT program can only be used for univariate spectral analysis or the autospectrum. Given the need for cross-spectral analysis for unevenly spaced data … WebOnly ‘convential’ methods of spectral analysis are covered, i.e., procedures such as the multitaper technique and the maximum entropy method are not considered. For a complete treatment and real understanding of the subject, one or several of the textbooks listed below should be consulted.
Nonstationary footprints of ENSO in the Mekong River Delta …
WebNov 11, 2024 · Redfit spectra (Schulz & Mudelsee, 2002) were calculated with PAST 3.14 (Hammer et al., 2001) using a triangle (CaSO 4 record) or a rectangle window (records of δ 13 C and water level). Gaussian band-pass filtering was used to determine cycles from the proxy records and the astronomical solution for orbital tuning (Laskar et al., 2004 ). WebJan 1, 2024 · Then, spectral analysis is performed using REDFIT software version 3.5 (Schulz and Mudelsee, 2002), and cyclicity is further analyzed by cross-correlating (Box et al., 2016) the seven time-series. The analyses exclude scalograms from wavelet analysis, which is a commonly used method for evaluating the persistence of a given cycle. tspgcet application form 2021
REDFIT-X Cross-spectral analysis of unevenly spaced …
WebCross-spectral analysis is commonly used in climate research to identify joint variability between two variables and to assess the phase (lead/lag) between them. Here we present … WebApr 1, 2002 · Paleoclimatic time series are often unevenly spaced in time, making it difficult to obtain an accurate estimate of their red-noise spectrum. A Fortran 90 program (REDFIT) is presented that overcomes this problem by fitting a first-order autoregressive (AR1) process, being characteristic for many climatic processes, directly to unevenly spaced … WebSep 11, 2024 · Redfit spectral 37, ... b Results of univariate spectral analysis 37 of the Quercus percentages time-series over the past 9260 yr. c Wavelet power spectrum 38 of Quercus percentages. The 95% ... phipps family horse racing