Investigation of frequency changes trend of days with dust storms in western half of Iran
In this research, daily and hourly data of dust storms (horizontal vision and meteorology codes) at 26 synoptic stations of western Iran for the period of 1990–2013has been used in order toidentifying and determining trend of dust-storm-frequencies. In this research, visibility less than 1000 was us...
| Published in: | مخاطرات محیط طبیعی |
|---|---|
| Main Author: | |
| Format: | Article |
| Language: | Persian |
| Published: |
University of Sistan and Baluchestan
2016-03-01
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| Subjects: | |
| Online Access: | https://jneh.usb.ac.ir/article_2656_7bc5aa5c371f3fa0fe18ef372065d586.pdf |
| _version_ | 1856956695820894208 |
|---|---|
| author | Batool Zeinali |
| author_facet | Batool Zeinali |
| author_sort | Batool Zeinali |
| collection | DOAJ |
| container_title | مخاطرات محیط طبیعی |
| description | In this research, daily and hourly data of dust storms (horizontal vision and meteorology codes) at 26 synoptic stations of western Iran for the period of 1990–2013has been used in order toidentifying and determining trend of dust-storm-frequencies. In this research, visibility less than 1000 was used as factor in order to determining dust storm (local and external) for all of dust storm meteorology codes. This data was investigated by parametric and non-parametric tests including Man-Kendal, Sen’s and regression test in yearly scale.Results indicated that a set of 26 data series, 9 data series in Man-Kendal method, 6 data series in Sen’s method, and 13 data series in regression method have significant positive trend in significant level at %1 and %5. The results of all three methods indicated that most of stations in western half Iran have increasing trend of dust storms. It increased markedly in southwest of Iran. |
| format | Article |
| id | doaj-art-8def9b5a495345b2a2d8826b088cbdfd |
| institution | Directory of Open Access Journals |
| issn | 2676-4377 2676-4385 |
| language | fas |
| publishDate | 2016-03-01 |
| publisher | University of Sistan and Baluchestan |
| record_format | Article |
| spelling | doaj-art-8def9b5a495345b2a2d8826b088cbdfd2025-08-19T20:05:06ZfasUniversity of Sistan and Baluchestanمخاطرات محیط طبیعی2676-43772676-43852016-03-01578710010.22111/jneh.2016.26562656Investigation of frequency changes trend of days with dust storms in western half of IranBatool Zeinali0استادیار اقلیم شناسی دانشگاه محقق اردبیلیIn this research, daily and hourly data of dust storms (horizontal vision and meteorology codes) at 26 synoptic stations of western Iran for the period of 1990–2013has been used in order toidentifying and determining trend of dust-storm-frequencies. In this research, visibility less than 1000 was used as factor in order to determining dust storm (local and external) for all of dust storm meteorology codes. This data was investigated by parametric and non-parametric tests including Man-Kendal, Sen’s and regression test in yearly scale.Results indicated that a set of 26 data series, 9 data series in Man-Kendal method, 6 data series in Sen’s method, and 13 data series in regression method have significant positive trend in significant level at %1 and %5. The results of all three methods indicated that most of stations in western half Iran have increasing trend of dust storms. It increased markedly in southwest of Iran.https://jneh.usb.ac.ir/article_2656_7bc5aa5c371f3fa0fe18ef372065d586.pdfdust stormswest of irantemporal changesnon-parametric testsparametric test |
| spellingShingle | Batool Zeinali Investigation of frequency changes trend of days with dust storms in western half of Iran dust storms west of iran temporal changes non-parametric tests parametric test |
| title | Investigation of frequency changes trend of days with dust storms in western half of Iran |
| title_full | Investigation of frequency changes trend of days with dust storms in western half of Iran |
| title_fullStr | Investigation of frequency changes trend of days with dust storms in western half of Iran |
| title_full_unstemmed | Investigation of frequency changes trend of days with dust storms in western half of Iran |
| title_short | Investigation of frequency changes trend of days with dust storms in western half of Iran |
| title_sort | investigation of frequency changes trend of days with dust storms in western half of iran |
| topic | dust storms west of iran temporal changes non-parametric tests parametric test |
| url | https://jneh.usb.ac.ir/article_2656_7bc5aa5c371f3fa0fe18ef372065d586.pdf |
| work_keys_str_mv | AT batoolzeinali investigationoffrequencychangestrendofdayswithduststormsinwesternhalfofiran |