Volume 23, Issue 69 (6-2023)
jgs 2023, 23(69): 15-31 |
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Mostafazadeh R, Asiabi-hir R, Nabavi S S. Determining the variations of monthly wet and dry regimes using Angot index in Ardabil Province. jgs 2023; 23 (69) : 2
URL: http://jgs.khu.ac.ir/article-1-3405-en.html
URL: http://jgs.khu.ac.ir/article-1-3405-en.html
1- University of Mohaghegh Ardabili , raoofmostafazadeh@uma.ac.ir
2- University of Mohaghegh Ardabili
3- Tarbiat Modares University
2- University of Mohaghegh Ardabili
3- Tarbiat Modares University
Abstract: (3946 Views)
Drought is the main causes of significant water imbalance, increase of crop losses or limitation in water consumption, and finally large number of socioeconomic and environmental problems. Precipitation amount is the most important climatic variables that its spatiotemporal variability has a great influence on water resources availability along with the effects of climate change. The Angot index is an indicator to determine the climatic cycles of precipitation as the ratio between the average values of multiannual precipitation over wet and dry periods which highlights the climate significance of monthly precipitation to detect dry or rainy intervals. The aim of this study is to assess and calculation of the Angot inxed in analysis of dry and wet periods of monthly rainfall in rain gauge stations of Ardabil province. The maximum values of Angot index were observed in November and May months. The results proved the suitability of the Angor index in determining wet and dry months and the comparison of the employed index with other common drought indices (e.g. Standardized Precipitation Index) and also different climatic zones of Iran needs further investigations.
Article number: 2
Type of Study: Research |
Subject:
climatology
References
1. آذرخشی، مریم؛ فرزادمهر، جلیل؛ اصلاح، مهدی؛ صحابی، حسین. (1392). بررسی روند تغییرات سالانه و فصلی بارش و پارامترهای دما در مناطق مختلف آب و هوای ایران، مرتع و آبخیزداری (مجله منابع طبیعی ایران)، 1(66): 16-1.
2. حجام، سهراب؛ خوشخو، یونس؛ وندی، رضا. (1387). تحلیل روند تغییرات بارندگی‌های فصلی و سالانه چند ایستگاه منتخب در حوزه مرکزی ایران با استفاده از روش‌های ناپارامتری، پژوهش‌های جغرافیای طبیعی، 44: 168-157.
3. رضائی بنفشه، مجید؛ جلالی، طاهره؛ زینالی، بتول. (1388). تحلیل و برآورد خشکسالی اقلیمی شهر اردبیل با استفاده از شاخص من‌کندال و SPI، همایش منطقه‌ای بحران آب و خشکسالی، رشت، 6-1.
4. عیوضی، معصومه؛ مساعدی، ابوالفضل؛ حسام، مهدی. (1387). بررسی روند بارندگی سالانه و فصلی در مناطق نیمه‌خشک استان گلستان، اولین کنفرانس بین‌المللی بحران آب، دانشگاه زابل، 10-1.
5. محمدی، حسین، تقوی، فرهناز. (1384). روند شاخص‌های حدی دما و بارش در تهران، پژوهش‌های جغرافیایی، 53: 172-151.
6. مصطفی‌زاده، رئوف؛ شهابی، معصومه؛ ذبیحی، محسن. (1394). تحلیل خشکسالی هواشناسی در استان کردستان با استفاده از مدل نمودار سه متغیره، آمایش جغرافیایی فضا، 17(5): 140-129.
7. Apostol, L., and Vieru, D.N. )2011(, Annual variation of average monthly precipitation amounts at the Botosani meteorological station. Environment and Sustainable Development, 5(1):191-196.
8. Ashabokov, B., Bischokov, R., and Derkach, D. )2008(, Study of changes in the rejime of atmospheric precipitation in the Central Northern Caucasus. Russian Meteorology and Hydrology, 2: 98-102. [DOI:10.3103/S1068373908020106]
9. Constantin, D.M., and Vătămanu, V.V. )2015(, Considerations upon the dryness and drought phenomena in the Caracal Plain, Romania. Scientific Papers Series-Management, Economic Engineering in Agriculture and Rural Development, 15(1): 119-122.
10. Daniela, S., and Stelian, N. )2012(, The intra-annual and seasonal regime of precipitation in Târgu Jiu Depression (Gorjului Subcarpathians) over the 1961-2007 period. Analele Universității din Oradea, Fascicula: Protecția Mediului, 18: 476-483.
11. Dragotă, C., Micu, M., and Micu, D. )2008(, The relevance of pluvial regime for landslides genesis and evolution.Case study: Muscel Basin (Buzău Subcarpathians), Romania. Present environment and sustainable development, 2: 242-257.
12. Grecu, F., Ghiţă, C., and Cîrciumaru, E. )2011(, Land vulnerability to geomorphological hazard induced by pluviometric criteria (Romanian Plain). Revista de Geomorfologie, 13: 59-66.
13. Kao, S.C., Govindaraju, R.S., and Niyogi, D. )2009(, A spatio-temporal drought analysis for the midwestern US. In World Environmental and Water Resources Congress 2009: Great Rivers. pp 1-10 [DOI:10.1061/41036(342)468]
14. Mishra, A.K., and Singh, V.P. )2010(, A review of drought concepts. Journal of Hydrology, 391(1): 202-216. [DOI:10.1016/j.jhydrol.2010.07.012]
15. Qian, W.H., and Lin, X. )2005(, Regional trends in recent precipitation indices in China. Meteorology and Atmospheric Physics, 90(3-4): 193-207. [DOI:10.1007/s00703-004-0101-z]
16. Rusu, T., Moraru, P., Coste, C., Cacovean, H., Chețan, F., and Chețan, C. )2014(, Impact of climate change on climatic indicators in Transylvanian Plain, Romania. Journal of Food, Agriculture & Environment, 12(1): 469-473.
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