Harmonic Analysis of the Spatiotemporal Pattern of Thunderstorms in Iran (1961–2010)
The current study aimed at investigating cycles and the spatial autocorrelation pattern of anomalies of thunderstorms in Iran during different periods from 1961 to 2010. In this analysis, 50-year periods (1961–2010) of thunderstorm codes have been collected from 283 synoptic stations of Meteorologic...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2019/1612503 |
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| author | Ali Akbar Sabziparvar Seyed Hossein Mir Mousavi Mostafa Karampour Mehdi Doostkamian Esmaeil Haghighi Iman Rousta Haraldur Olafsson Md Omar Sarif Rajan Dev Gupta Md Moniruzzaman Khairul Hasan Ali Ghasemi |
| author_facet | Ali Akbar Sabziparvar Seyed Hossein Mir Mousavi Mostafa Karampour Mehdi Doostkamian Esmaeil Haghighi Iman Rousta Haraldur Olafsson Md Omar Sarif Rajan Dev Gupta Md Moniruzzaman Khairul Hasan Ali Ghasemi |
| author_sort | Ali Akbar Sabziparvar |
| collection | DOAJ |
| description | The current study aimed at investigating cycles and the spatial autocorrelation pattern of anomalies of thunderstorms in Iran during different periods from 1961 to 2010. In this analysis, 50-year periods (1961–2010) of thunderstorm codes have been collected from 283 synoptic stations of Meteorological Organization of Iran. The study period has been divided into five different decades (1961–1970, 1971–1980, 1981–1990, 1991–2000, and 2001–2010). Spectral analysis and Moran’s I were used to analyze cycles and the spatial autocorrelation pattern, respectively. Furthermore, in order to conduct the calculations, programming facilities of MATLAB have been explored. Finally, Surfer and GIS were employed to come up with the graphical depiction of the maps. The results showed that the maximum of positive anomalies mainly occurred in the northwestern and western parts of Iran due to their special topography, during all the five studied periods. On the other hand, the minimum of negative anomalies took place in central regions of the country because of lack of appropriate conditions (e.g., enough humidity). Moran’s I spatial analysis further confirmed these findings as Moran’s I depicts the positive and negative spatial autocorrelation patterns in line with negative and positive anomalies, respectively. However, in recent decades, this pattern has experienced a declining trend, especially in southern areas of Iran. The results of harmonic analysis indicated that mainly short-term and midterm cycles dominated Iran’s thunderstorms. |
| format | Article |
| id | doaj-art-77a84f5010194e4585c98cf01a2808d0 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-77a84f5010194e4585c98cf01a2808d02025-02-03T06:13:56ZengWileyAdvances in Meteorology1687-93091687-93172019-01-01201910.1155/2019/16125031612503Harmonic Analysis of the Spatiotemporal Pattern of Thunderstorms in Iran (1961–2010)Ali Akbar Sabziparvar0Seyed Hossein Mir Mousavi1Mostafa Karampour2Mehdi Doostkamian3Esmaeil Haghighi4Iman Rousta5Haraldur Olafsson6Md Omar Sarif7Rajan Dev Gupta8Md Moniruzzaman9Khairul Hasan10Ali Ghasemi11Department of Agriculture, Bu-Ali Sina University, Hamedan, IranDepartment of Geography, University of Zanjan, Zanjan, IranDepartment of Geography, Lorestan University, Khorramabad, Lorestan 6813833946, IranDepartment of Geography, University of Zanjan, Zanjan 3879145371, IranDepartment of Physical Geography, University of Tabriz, Tabriz, IranDepartment of Geography, Yazd University, Yazd 8915818411, IranDepartment of Physics, University of Iceland, Institute for Atmospheric Sciences and Icelandic Meteorological Office (IMO), Bustadavegur 7, IS-108 Reykjavik, IcelandGeographic Information System (GIS) Cell, Motilal Nehru National Institute of Technology Allahabad, Prayagraj-211004, IndiaCivil Engineering Department, and Member of GIS Cell, Motilal Nehru National Institute of Technology Allahabad, Prayagraj-211004, IndiaCenter for Space Science and Technology in Asia and the Pacific (CSSTEAP), Dehradun-248001, IndiaDepartment of Civil and Environmental Engineering, Shahjalal University of Science & Technology, Sylhet-3114, Bangladesh, IndiaDepartment of Physical Geography, University of Tabriz, Tabriz, IranThe current study aimed at investigating cycles and the spatial autocorrelation pattern of anomalies of thunderstorms in Iran during different periods from 1961 to 2010. In this analysis, 50-year periods (1961–2010) of thunderstorm codes have been collected from 283 synoptic stations of Meteorological Organization of Iran. The study period has been divided into five different decades (1961–1970, 1971–1980, 1981–1990, 1991–2000, and 2001–2010). Spectral analysis and Moran’s I were used to analyze cycles and the spatial autocorrelation pattern, respectively. Furthermore, in order to conduct the calculations, programming facilities of MATLAB have been explored. Finally, Surfer and GIS were employed to come up with the graphical depiction of the maps. The results showed that the maximum of positive anomalies mainly occurred in the northwestern and western parts of Iran due to their special topography, during all the five studied periods. On the other hand, the minimum of negative anomalies took place in central regions of the country because of lack of appropriate conditions (e.g., enough humidity). Moran’s I spatial analysis further confirmed these findings as Moran’s I depicts the positive and negative spatial autocorrelation patterns in line with negative and positive anomalies, respectively. However, in recent decades, this pattern has experienced a declining trend, especially in southern areas of Iran. The results of harmonic analysis indicated that mainly short-term and midterm cycles dominated Iran’s thunderstorms.http://dx.doi.org/10.1155/2019/1612503 |
| spellingShingle | Ali Akbar Sabziparvar Seyed Hossein Mir Mousavi Mostafa Karampour Mehdi Doostkamian Esmaeil Haghighi Iman Rousta Haraldur Olafsson Md Omar Sarif Rajan Dev Gupta Md Moniruzzaman Khairul Hasan Ali Ghasemi Harmonic Analysis of the Spatiotemporal Pattern of Thunderstorms in Iran (1961–2010) Advances in Meteorology |
| title | Harmonic Analysis of the Spatiotemporal Pattern of Thunderstorms in Iran (1961–2010) |
| title_full | Harmonic Analysis of the Spatiotemporal Pattern of Thunderstorms in Iran (1961–2010) |
| title_fullStr | Harmonic Analysis of the Spatiotemporal Pattern of Thunderstorms in Iran (1961–2010) |
| title_full_unstemmed | Harmonic Analysis of the Spatiotemporal Pattern of Thunderstorms in Iran (1961–2010) |
| title_short | Harmonic Analysis of the Spatiotemporal Pattern of Thunderstorms in Iran (1961–2010) |
| title_sort | harmonic analysis of the spatiotemporal pattern of thunderstorms in iran 1961 2010 |
| url | http://dx.doi.org/10.1155/2019/1612503 |
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