Comparison of Amplitude Variations of Seasonal and Sub-Seasonal Oscillations in Length of Day and Total Solar Irradiance
The aim of the study was to identify and compute oscillations in two different time series with similar amplitude variations using length of day data with tide model removed (LODR) and total solar irradiance (TSI) data. The combination of the Fourier transform band pass filter and Hilbert transform...
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| Format: | Article |
| Language: | English |
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Polish Society of Ecological Engineering (PTIE)
2020-10-01
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| Series: | Journal of Ecological Engineering |
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| Online Access: | http://www.journalssystem.com/jeeng/Comparison-of-amplitude-variations-of-seasonal-and-sub-seasonal-oscillations-in-length,125453,0,2.html |
| _version_ | 1811330566408110080 |
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| author | Wiesław Kosek Justyna Gabryszuk |
| author_facet | Wiesław Kosek Justyna Gabryszuk |
| author_sort | Wiesław Kosek |
| collection | DOAJ |
| description | The aim of the study was to identify and compute oscillations in two different time series with similar amplitude variations using length of day data with tide model removed (LODR) and total solar irradiance (TSI) data. The combination of the Fourier transform band pass filter and Hilbert transform allows to detect amplitude variations as a function of oscillation period. Amplitude variations in two different time series enable computation of frequency dependent or time-frequency correlation coefficients between them. It allows also to identify such oscillations in two time series which have similar amplitude variations. The method applied to LODR and TSI data, enable to detect possible relationship between them. This comparison method can be applied to any time series which consist of oscillations with non-constant amplitudes. |
| first_indexed | 2024-04-13T16:05:19Z |
| format | Article |
| id | doaj.art-25d25f4f5a8246b7a2944e6ad2c84dd7 |
| institution | Directory Open Access Journal |
| issn | 2299-8993 |
| language | English |
| last_indexed | 2024-04-13T16:05:19Z |
| publishDate | 2020-10-01 |
| publisher | Polish Society of Ecological Engineering (PTIE) |
| record_format | Article |
| series | Journal of Ecological Engineering |
| spelling | doaj.art-25d25f4f5a8246b7a2944e6ad2c84dd72022-12-22T02:40:25ZengPolish Society of Ecological Engineering (PTIE)Journal of Ecological Engineering2299-89932020-10-01217525710.12911/22998993/125453125453Comparison of Amplitude Variations of Seasonal and Sub-Seasonal Oscillations in Length of Day and Total Solar IrradianceWiesław Kosek0Justyna Gabryszuk1Faculty of Civil Engineering and Geodesy, Military University of Technology, ul. gen. Sylwestra Kaliskiego 2, 00-908 Warsaw, PolandFaculty of Production Engineering, University of Life Sciences in Lublin, ul. Akademicka 13, 20-950 Lublin, PolandThe aim of the study was to identify and compute oscillations in two different time series with similar amplitude variations using length of day data with tide model removed (LODR) and total solar irradiance (TSI) data. The combination of the Fourier transform band pass filter and Hilbert transform allows to detect amplitude variations as a function of oscillation period. Amplitude variations in two different time series enable computation of frequency dependent or time-frequency correlation coefficients between them. It allows also to identify such oscillations in two time series which have similar amplitude variations. The method applied to LODR and TSI data, enable to detect possible relationship between them. This comparison method can be applied to any time series which consist of oscillations with non-constant amplitudes.http://www.journalssystem.com/jeeng/Comparison-of-amplitude-variations-of-seasonal-and-sub-seasonal-oscillations-in-length,125453,0,2.htmllength of dayel niñosolar irradiancefourier transformhilbert transform |
| spellingShingle | Wiesław Kosek Justyna Gabryszuk Comparison of Amplitude Variations of Seasonal and Sub-Seasonal Oscillations in Length of Day and Total Solar Irradiance Journal of Ecological Engineering length of day el niño solar irradiance fourier transform hilbert transform |
| title | Comparison of Amplitude Variations of Seasonal and Sub-Seasonal Oscillations in Length of Day and Total Solar Irradiance |
| title_full | Comparison of Amplitude Variations of Seasonal and Sub-Seasonal Oscillations in Length of Day and Total Solar Irradiance |
| title_fullStr | Comparison of Amplitude Variations of Seasonal and Sub-Seasonal Oscillations in Length of Day and Total Solar Irradiance |
| title_full_unstemmed | Comparison of Amplitude Variations of Seasonal and Sub-Seasonal Oscillations in Length of Day and Total Solar Irradiance |
| title_short | Comparison of Amplitude Variations of Seasonal and Sub-Seasonal Oscillations in Length of Day and Total Solar Irradiance |
| title_sort | comparison of amplitude variations of seasonal and sub seasonal oscillations in length of day and total solar irradiance |
| topic | length of day el niño solar irradiance fourier transform hilbert transform |
| url | http://www.journalssystem.com/jeeng/Comparison-of-amplitude-variations-of-seasonal-and-sub-seasonal-oscillations-in-length,125453,0,2.html |
| work_keys_str_mv | AT wiesławkosek comparisonofamplitudevariationsofseasonalandsubseasonaloscillationsinlengthofdayandtotalsolarirradiance AT justynagabryszuk comparisonofamplitudevariationsofseasonalandsubseasonaloscillationsinlengthofdayandtotalsolarirradiance |