Investigating the Role of the Madden-Julian Oscillation (MJO) on the Frequency of Dust Storms in Selected Stations of Khuzestan Province and Tracking the Paths of Dust Entering it
This study investigates the impact of the OLR MJO Index (OMI) and the Real-time Multivariate MJO (RMM) of the Madden-Julian Oscillation on the frequency of dust storms in the stations of Abadan, Ahvaz, Bostan, Bandar Mahshahr, Dezful, Ramhormoz, and Masjed Soleiman, located in Khuzestan province, du...
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Kharazmi University
2025-06-01
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| Series: | تحقیقات کاربردی علوم جغرافیایی |
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| Online Access: | http://jgs.khu.ac.ir/article-1-4219-en.pdf |
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| author | Fatemeh Vatanparast Galeh Juq Bromand Salahi Batoul Zeinali |
| author_facet | Fatemeh Vatanparast Galeh Juq Bromand Salahi Batoul Zeinali |
| author_sort | Fatemeh Vatanparast Galeh Juq |
| collection | DOAJ |
| description | This study investigates the impact of the OLR MJO Index (OMI) and the Real-time Multivariate MJO (RMM) of the Madden-Julian Oscillation on the frequency of dust storms in the stations of Abadan, Ahvaz, Bostan, Bandar Mahshahr, Dezful, Ramhormoz, and Masjed Soleiman, located in Khuzestan province, during the period from April to September 1987-2021. Pearson correlation coefficients were computed to assess the relationship between dust data and the indices, and the findings were depicted through zoning maps. Subsequently, the frequency percentage of each index for both positive and negative phases was quantified. The results indicate a direct and significant correlation between the positive and negative phases of the indices and dust occurrences (with the exception of Dezful station), particularly during the positive phase of the OMI and the negative phase of the RMM. The highest correlation coefficients, ranging from 0.77 to 0.72, were observed for Bandar Mahshahr and Dezful stationsduring the positive phase of the RMM index. Analysis of the relationship between the Madden-Julian Oscillation and dust storms revealed that between 51% and 59% of dust storms in Khuzestan province occurred in the negative phase of the OMI index, while 40% to 49% occurred in the positive phase. In the case of the RMM index, 56% to 63% of dust storms were associated with its negative phase, in contrast to 37% to 50% linked to its positive phase. Notably, the negative phase of the RMM index exhibited a higher percentage of dust storms compared to the negative phase of the OMI index. According to the results of the Monte Carlo test, the displacement of the positive and negative phases of the RMM index significantly contributes to the occurrence of dust storms at most stations in Khuzestan province. Furthermore, tracking the pathways of dust entering Khuzestan province using the HYSPLIT model indicates the movement of particles originating from Iraq, Arabia, and the eastern regions of Syria toward Khuzestan province.. |
| format | Article |
| id | doaj-art-702e6b2d16634d56bf124f846b9f502e |
| institution | Kabale University |
| issn | 2228-7736 2588-5138 |
| language | fas |
| publishDate | 2025-06-01 |
| publisher | Kharazmi University |
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| series | تحقیقات کاربردی علوم جغرافیایی |
| spelling | doaj-art-702e6b2d16634d56bf124f846b9f502e2025-01-31T17:34:08ZfasKharazmi Universityتحقیقات کاربردی علوم جغرافیایی2228-77362588-51382025-06-012577198217Investigating the Role of the Madden-Julian Oscillation (MJO) on the Frequency of Dust Storms in Selected Stations of Khuzestan Province and Tracking the Paths of Dust Entering itFatemeh Vatanparast Galeh Juq0Bromand Salahi1Batoul Zeinali2 Ph.D. Student of Climatology, Department of Physical Geography, Faculty of Social Sciences, University of Mohaghegh Ardabili, Ardabil, Iran. Professor of Climatology, Department of Physical Geography, Faculty of Social Sciences, University of Mohaghegh Ardabili, Ardabil, Iran. Associated Professor of Climatology, Department of Physical Geography, Faculty of Social Sciences, University of Mohaghegh Ardabili, Ardabil, Iran. This study investigates the impact of the OLR MJO Index (OMI) and the Real-time Multivariate MJO (RMM) of the Madden-Julian Oscillation on the frequency of dust storms in the stations of Abadan, Ahvaz, Bostan, Bandar Mahshahr, Dezful, Ramhormoz, and Masjed Soleiman, located in Khuzestan province, during the period from April to September 1987-2021. Pearson correlation coefficients were computed to assess the relationship between dust data and the indices, and the findings were depicted through zoning maps. Subsequently, the frequency percentage of each index for both positive and negative phases was quantified. The results indicate a direct and significant correlation between the positive and negative phases of the indices and dust occurrences (with the exception of Dezful station), particularly during the positive phase of the OMI and the negative phase of the RMM. The highest correlation coefficients, ranging from 0.77 to 0.72, were observed for Bandar Mahshahr and Dezful stationsduring the positive phase of the RMM index. Analysis of the relationship between the Madden-Julian Oscillation and dust storms revealed that between 51% and 59% of dust storms in Khuzestan province occurred in the negative phase of the OMI index, while 40% to 49% occurred in the positive phase. In the case of the RMM index, 56% to 63% of dust storms were associated with its negative phase, in contrast to 37% to 50% linked to its positive phase. Notably, the negative phase of the RMM index exhibited a higher percentage of dust storms compared to the negative phase of the OMI index. According to the results of the Monte Carlo test, the displacement of the positive and negative phases of the RMM index significantly contributes to the occurrence of dust storms at most stations in Khuzestan province. Furthermore, tracking the pathways of dust entering Khuzestan province using the HYSPLIT model indicates the movement of particles originating from Iraq, Arabia, and the eastern regions of Syria toward Khuzestan province..http://jgs.khu.ac.ir/article-1-4219-en.pdfmaden-julian oscillation (mjo)khuzestan provincemonte carlo testhysplit model |
| spellingShingle | Fatemeh Vatanparast Galeh Juq Bromand Salahi Batoul Zeinali Investigating the Role of the Madden-Julian Oscillation (MJO) on the Frequency of Dust Storms in Selected Stations of Khuzestan Province and Tracking the Paths of Dust Entering it تحقیقات کاربردی علوم جغرافیایی maden-julian oscillation (mjo) khuzestan province monte carlo test hysplit model |
| title | Investigating the Role of the Madden-Julian Oscillation (MJO) on the Frequency of Dust Storms in Selected Stations of Khuzestan Province and Tracking the Paths of Dust Entering it |
| title_full | Investigating the Role of the Madden-Julian Oscillation (MJO) on the Frequency of Dust Storms in Selected Stations of Khuzestan Province and Tracking the Paths of Dust Entering it |
| title_fullStr | Investigating the Role of the Madden-Julian Oscillation (MJO) on the Frequency of Dust Storms in Selected Stations of Khuzestan Province and Tracking the Paths of Dust Entering it |
| title_full_unstemmed | Investigating the Role of the Madden-Julian Oscillation (MJO) on the Frequency of Dust Storms in Selected Stations of Khuzestan Province and Tracking the Paths of Dust Entering it |
| title_short | Investigating the Role of the Madden-Julian Oscillation (MJO) on the Frequency of Dust Storms in Selected Stations of Khuzestan Province and Tracking the Paths of Dust Entering it |
| title_sort | investigating the role of the madden julian oscillation mjo on the frequency of dust storms in selected stations of khuzestan province and tracking the paths of dust entering it |
| topic | maden-julian oscillation (mjo) khuzestan province monte carlo test hysplit model |
| url | http://jgs.khu.ac.ir/article-1-4219-en.pdf |
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