تحقیقات کاربردی علوم جغرافیایی

تحقیقات کاربردی علوم جغرافیایی

مدلسازی دینامیکی ویژگی های مکانی- زمانی گرد و غبار در جنوب و جنوب شرق ایران با مدل REGCM4

نویسندگان
مطهره زرگری 1
مهدی بروغنی 2
علیرضا انتظاری 3
عباس مفیدی 4
محمد باعقیده 3
1 دانشجوی دکتری آب و هواشناسی دانشگاه حکیم سبزواری
2 استادیار مرکز پژوهشی مطالعات جغرافیایی و علوم اجتماعی دانشگاه حکیم سبزواری
3 دانشیار آب و هواشناسی دانشگاه حکیم سبزواری
4 استادیار آب و هواشناسی دانشگاه فردوسی مشهد
10.52547/jgs.24.72.115
چکیده
گرد و غبار یکی از مخاطرات جوی است که در نواحی خشک و نیمه­ خشک دارای پیامدهای اقلیمی و زیست محیطی نامطلوبی می باشد. هدف تحقیق حاضر مدلسازی دینامیکی ویژگی های مکانی- زمانی گرد و غبار در جنوب و جنوب شرق ایران با مدل REG-CM4 با استفاده از داده های ماهانه گرد و غباری و داده های مدل RegCM4 می باشد. بدین منظور، توزیع مکانی گرد و غبار به روش IDW به همراه نمودارهای گرد و غبار ترسیم شدند. مدل RegCM4 با در نظرگیری سیستم تصویر لامبرت با قدرت تفکیک افقی 40 کیلومتر با مدل جفت شده شیمی اجرا شد. توزیع مکانی گرد و غبار ماهانه و سالانه بالاترین مقادیر فراوانی گرد و غبار را برای شهرهای زابل، بندرعباس، زاهدان و جاسک نسبت به ایستگاه های سیرجان، کهنوج و لار نشان می دهد. علاوه بر این، بیشترین وقوع فراوانی گرد و غبار در استان های سیستان و بلوچستان (%48)، هرمزگان (%27) و فارس با 16 درصد و کمترین فراوانی آن برای استان کرمان (%9) نشان داده شده است. به طور کلی، فصول تابستان (در ایستگاه سیستان) و زمستان (ایستگاه کرمان) به ترتیب بیشینه و کمینه رخداد گرد و غبار را دارند. بررسی زمانی نیز بیشترین میزان گرد و غبار را برای ماه های گرم سال و کمترین را برای ماه های سرد سال به همراه دارد. ماه جولای در ایستگاه زابل و ماه های نوامبر و دسامبر در ایستگاه سیرجان به ترتیب بیشترین و کمترین فراوانی گرد و غبار را دارند. همچنین، مدل اقلیمی RegCM4 برای متغیرهای مختلف نیز بیشینه گرد و غبار را بر روی جنوب شرق، جنوب و سواحل جنوب به خوبی نشان داده است.
کلیدواژه‌ها
گرد و غبار
توزیع زمانی
توزیع مکانی
RegCM4
جنوب و جنوب شرق ایران

عنوان مقاله English

Dynamic modeling of spatial-temporal characteristics of dust in south and southeastern Iran with REG-CM4 model

نویسندگان English

Motahhareh Zargari 1
Mahdi Boroughani 2
Alireza Entezari 3
Abbas Mofidi 4
Mohammad Baaghideh 3
1 Ph.D. Student Assistant Professor of climatology, Hakim Sabzevari University
2 Assistant Professor of Geographical and Social Sciences Research Center of Hakim Sabzevari University.
3 Associate Professor of climatology, Hakim Sabzevari University
4 Associate Professor of climatology,Ferdowsi University
چکیده English

The aim of the present study is to dynamically model the spatial-temporal characteristics of dust in the south and southeast of Iran with REG-CM4 model using monthly dust data and RegCM4 data. For this purpose, the dust distribution of the IDW method along with the dust diagrams were plotted. The RegCM4 model was implemented with the paired Lambert image imaging system for 40 km horizontal separation with the paired chemistry model. The location of monthly and annual dust distribution shows the highest amounts of dust for the cities of Zabol, Bandar Abbas, Zahedan and Jask compared to Sirjan, Kahnooj and Lar stations. The highest frequency of dust in Sistan and Baluchestan (48%), Hormozgan (27%) and Fars provinces with 16% and the lowest frequency for Kerman province (9%). In general, the summer seasons (at Sistan station) and the winter (Kerman station) have the highest and minimum dust events, respectively. The time survey also has the highest amount of dust for the warm months of the year and the lowest for the cold months of the year. July at Zabol station and November and December at Sirjan station have the highest and lowest dust levels, respectively. The RegCM4 climate model also shows maximum dust on the southeast, south and south coasts for different variables.

کلیدواژه‌ها English

Dust
Time Distribution
Spatial distribution
RegCM4
South and Southeast of Iran
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