The impact of Mediterranean oscillations on periodicity and trend of temperature in the valley of the Nisava River: A fourier and wavelet approach | Zendy

Nataša Martić Bursać | Zendy; Branislav Bursac | Zendy; Vladan Ducić | Zendy; Aleksandar Radivojević | Zendy; Nenad Živković | Zendy; Radomir Ivanović | Zendy; M. Djokić | Zendy; Ljiljana Stričević | Zendy; Milena Gocić | Zendy

Open Access

The impact of Mediterranean oscillations on periodicity and trend of temperature in the valley of the Nisava River: A fourier and wavelet approach

Author(s) -

Nataša Martić Bursać,

Branislav Bursac,

Vladan Ducić,

Aleksandar Radivojević,

Nenad Živković,

Radomir Ivanović,

M. Djokić,

Ljiljana Stričević,

Milena Gocić

Publication year - 2016

Publication title -

thermal science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.339

H-Index - 43

eISSN - 2334-7163

pISSN - 0354-9836

DOI - 10.2298/tsci160201229m

Subject(s) - wavelet , fourier transform , oscillation (cell signaling) , wavelet transform , mediterranean climate , spectral density , spectral analysis , periodogram , climatology , fourier analysis , continuous wavelet transform , coherence (philosophical gambling strategy) , mathematics , environmental science , geology , physics , statistics , geography , discrete wavelet transform , mathematical analysis , computer science , spectroscopy , genetics , archaeology , quantum mechanics , artificial intelligence , biology

Periodicity of temperature on three stations in the Nisava River valley in period 1949-2014, has been analyzed by means of Fourier and wavelet transforms. Combined periodogram based on fast Fourier transform shows considerable similarity among individual series and identifies significant periods on 2.2, 2.7, 3.3, 5, 6-7, and 8.2 years in all datasets. Wavelet coherence analysis connects strongest 6-7 years spectral component to Mediterranean oscillation, starting in 1980s. Combined periodogram of Mediterranean oscillation index reveals 6-7 years spectral component as a dominant mode in period 1949-2014. Wavelet power spectra and partial combined periodograms show absence of 6-7 years component before 1975, after which this component becomes dominant in the spectrum. Consistency between alternation in temperature trend in the Nisava River valley and change in periodicity of Mediterranean oscillation was found. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. OI176008

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