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Aerosol-Cloud-Lightning Interactions: A Comparative Study of Mountainous and Coastal Environments in Iran | ||
| فیزیک زمین و فضا | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 10 بهمن 1403 اصل مقاله (1.56 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jesphys.2025.384351.1007638 | ||
| نویسندگان | ||
| Reza Ramezani1؛ مریم قرایلو* 2؛ Majid M. Farahani3؛ Nafiseh Pegahfar4 | ||
| 1M.Sc. graduate, Institute of Geophysics, University of Tehran | ||
| 2دانشیار/هیئت علمی مؤسسه ژئوفیزیک | ||
| 3Associate professor, Institute of Geophysics, University of Tehran | ||
| 4Assistant Professor, Atmospheric Science Research Center, Iranian National Institute for Oceanography and Atmospheric Science | ||
| چکیده | ||
| Aerosols affect cloud microphysical processes and lightning activity by acting as cloud condensation nuclei. To investigate this, we analyzed lightning density data from LIS, cloud fraction, cloud-top height, ice cloud optical thickness, and AOD data from MODIS, and CAPE from the ERA5 data for the period 2000-2014 in two distinct environmental areas (R1 and R2). R1 is located between 32.5°N and 34°N and 46°E and 48°E in the mountainous west of Iran, experiencing three distinct climates: Mediterranean, cold mountainous, and warm semi-desert. In contrast, R2, situated between 27.5°N and 29°N and 50°E and 52°E, is characterized by plains with a warm and dry climate in the north and a humid, warm climate in the south. Analysis of monthly variations indicates that lightning activity and AOD correlate well in spring and autumn but diverge in winter, with a negative correlation in summer due to suppressed convective storms at high AOD values. Analysis of annual variation of lightning activity and AOD indicates that electrical activity is higher in R1, which frequently experiences sand and dust storms. The results showed that AOD has a moderate positive correlation with lightning activity in both regions due to various AOD sources, including black carbon, dust, sea salt, and sulphate. Cloud fraction, ice cloud optical thickness, and cloud-top height have a positive correlation with lightning density in R1 and R2, while the correlation between CAPE and lightning density is lower in R2, likely due to higher humidity stabilizing the atmosphere leading to fewer and less intense thunderstorms. | ||
| کلیدواژه‌ها | ||
| Aerosols؛ lightning؛ AOD؛ cloud properties؛ CAPE | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 63 تعداد دریافت فایل اصل مقاله: 36 |
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