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شبیه سازی و تحلیل عددی طوفان گردوغبار 10 جولای 2014 با مدل های جهانی در ایران مرکزی | ||
| پژوهش های آبخیزداری | ||
| مقاله 2، دوره 34، شماره 4 - شماره پیاپی 133، دی 1400، صفحه 2-15 اصل مقاله (1.49 M) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/wmrj.2021.352841.1377 | ||
| نویسندگان | ||
| فرشاد سلیمانی ساردو1؛ سارا کرمی2؛ فرزانه وکیلی تجره* 3 | ||
| 1استادیار گروه مهندسی طبیعت، دانشکده منابع طبیعی دانشگاه جیرفت | ||
| 2استادیار پژوهشکده هواشناسی و علوم جو، سازمان هواشناسی کشور | ||
| 3دانشجوی دکترای علوم و مهندسی آبخیز، دانشکده‌ی منابع طبیعی، دانشگاه تهران | ||
| چکیده | ||
| پدیده‌ی گردوغبار یکی از دشواری‌های زیستمحیطی در منطقه‌ی ایران مرکزی است، بهطوریکه سالانه زیان‌های زیادی به بوم‌نظام‌های طبیعی و انسانی وارد میکند. ذره‌های گردوغبار سبب بیماری‌های تنفسی پرشماری شده است و از این راه بر تن‌درستی جامعه تاثیر می‌گزارد. کاهش دید ناشی از رخ‌دادهای گردوغبار هر ساله سبب لغوشدن پروازها و تصادف‌های جاده‌‌یی شده‌است و سبب زیان‌های مالی و جانی بسیاری می‌شود. پژوهش در این‌باره و شناسایی منشاء و چشمههای گردوغبار اهمیت زیادی دارد. شبیه‌سازی و تحلیل عددی طوفانهای شدید گردوغبار با مدل‌های پیش‌بینی عددی یکی از روشهای نوین پژوهش این پدیده است. هدف از این پژوهش شبیه‌سازی طوفان گردوغبار 10 جولای 2014 برای کمی‌سازی وتحلیل عددی آن است. از مدل MACC-ECMWF بهره‌گرفته‌شد. خروجی‌های مدل برای کمیت‌های عمق دیداری هواپخش و غلظت گردوغبار استخراج و مجموعه‌ی زمانی تغییر این دو کمیت در گام زمانی یک ساعته بررسی شد. تحلیل مکانی مقدار عمق دیداری هواپخش و غلظت گردوغبار نشان داد که بیابان مرکزی ایران در استان‌های سمنان، شرق اصفهان، و بیابان لوت مرکزی در شرق استان کرمان بزرگترین چشمهی گردوغبار ایران مرکزی است، و در روی‌داد گردوغبار نقش مهمی دارد. بررسی مجموعه‌ی زمانی دو کمیت عمق دیداری هواپخش و غلظت گردوغبار نیز نشان داد که در این پژوهش بیشینه‌ی مقدار آن‌ها در نیمههای شب حدود ساعت 23:00 بود. | ||
| کلیدواژه‌ها | ||
| شاخص AOD؛ غلظت گردوغبار؛ مدل MACC-ECMWF | ||
| عنوان مقاله [English] | ||
| Simulation and Numerical Analysis of Dust Storm of July 10, 2014 Using the MACC-ECMWF Model in Central Iran | ||
| نویسندگان [English] | ||
| Farshad Soleimani Sardo1؛ Sara Karami2؛ Farzaneh Vakili Tajareh3 | ||
| 1Assistant Professor, Department of Nature Engineering, Faculty of Natural Resources, Jiroft University | ||
| 2Assistant Professor, Institute of Meteorology and Atmospheric Sciences, Meteorological Organization of I.R. of Iran | ||
| 3Ph.D. Student in Watershed Science and Engineering, Faculty of Natural Resources, University of Tehran | ||
| چکیده [English] | ||
| Dust storms, one of the environmental problems in Central Iran, annually damage natural and human ecosystems. The dust has irreversible effects on human societies, including respiratory diseases and declining public health. Therefore, performing research on this subject and identifying the origin of dust is of great importance. Simulation and numerical analysis of severe dust storms are one of the new methods of studying this phenomenon. For the numerical analysis of dust, data related to the storm of July 10, 2014, and the MACC-ECMWF model were used for simulation. The results of the MACC-ECMWF model were extracted based on the Aerosol Optical Depth indices and dust concentration. The time series of the changes in the value of the AOD indices and dust concentration in a one-hour period indicated that the values of these two indices had an increasing trend and reached a maximum at 23:00. Also, spatial analysis of the Aerosol Optical Depth and dust concentrations showed that the Central Desert of Iran, extending from Semnan and East Isfahan Provinces to the Central Loot Desert in the east of the Province of Kerman, is the largest dust source in Central Iran. | ||
| کلیدواژه‌ها [English] | ||
| AOD index, dust concentration, MACC-ECMWF model | ||
| مراجع | ||
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