Climate Change Research

Climate Change Research

Faculty of Geography and Environmental Sciences, Hakim Sabzevari University, Sabzevar, Iran,

Document Type : Original Article

Authors
Abdolreza Kashki 1
Hossein Ghorbani 2
1 Faculty of Geography and Environmental Sciences, Hakim Sabzevari University, Sabzevar, Iran
2 Faculty of Geography and Environmental Sciences, Hakim Sabzevari University, Sabzevar, Iran,
10.30488/ccr.2024.461031.1224
Abstract
In recent decades, extreme hydrological events such as drought and flood have been increased in arid and semi-arid regions as a result of climate change. Hence, it is of significance to evaluate their changes in terms of intensity, duration and frequency and the interaction between them. The current study analyzed the characteristics of severity, duration and number of occurrences of drought and flood hazards during the period 1983-2022 using the long-term streamflow data in the basins South Baluchistan, Hamun-e Jaz Murian and Hamun-Mashkel. The results indicated that Southern Baluchistan has experienced larger magnitude, more severe and longer duration of hydrological floods and droughts over the last four decades. Flood magnitude at Bahot, Kehir, Pirsohrab and Kariani stations in this basin increased from 217 m3/s, 225 m3/s, 191 m3/s and 244 m3/s in the first decade to 255 m3/s, 291 m3/s, 291 m3/s and 554 m3/s in the third decade. Similar results were observed for Hamun-e Jaz Murian and Hamun-Mashkel basins. However, the number of flood occurrence in Hamun-e Jaz Murian and Hamun-Mashkel basins has been decreased. The results also showed an increasing trend for drought intensity and the number of occurrence changing from 1.3, 5.7 units in the first decade to 1.6, 4.3 units in the fourth decade, respectively. The duration of drought also increased from 7.5 months in the first decade to 14 months in the last decade.These results refer to the fact that the south-eastern regions of Iran have been affected by the integrated effects of floods and droughts, especially during the last decade. Regarding to the economic and social consequences of the increasing flood and drought risks, the appropriate planning and taking actions by the relevant authorities and institutions would be needed for adaption and reduction of the undesirable effects.
Keywords
SDI index
extreme events
run theory
climate change

Subjects

  1. Alfieri, L., Bisselink, B., Dottori, F., Naumann, G., de Roo, A., Salamon, P., & Feyen, L. (2017). Global projections of river flood risk in a warmer world. Earth's Future, 5(2), 171-182.‏
  2. Byakatonda, J., Parida, B. P., & Kenabatho, P. K. (2018). Relating the dynamics of climatological and hydrological droughts in semiarid Botswana. Physics and Chemistry of the Earth, Parts A/B/C, 105, 12-24.‏
  3. Cook, B. I., Mankin, J. S., Marvel, K., Williams, A. P., Smerdon, J. E., & Anchukaitis, K. J. (2020). Twenty‐first century drought projections in the CMIP6 forcing scenarios. Earth's Future, 8(6), e2019EF001461.‏
  4. Franchi, F., Mustafa, S., Ariztegui, D., Chirindja, F. J., Di Capua, A., Hussey, S., & Comte, J. C. (2024). Prolonged drought periods over the last four decades increase flood intensity in southern Africa. Science of the Total Environment, 924, 171489.‏
  5. Logsdon, Rebecca A. & Chaubey, Indrajeet, (2013(. A quantitative approach to evaluating ecosystem services, Ecological Modelling, Elsevier, vol. 257(C), pages 57-65.
  6. Nalbantis, I., & Tsakiris, G. (2009). Assessment of hydrological drought revisited. Water resources management, 23, 881-897.
  7. Mann, H. B. (1945). Nonparametric tests against trend. Econometrica: Journal of the econometric society, 245-259.‏
  8. Masroor, M., Sajjad, H., Rehman, S., Singh, R., Rahaman, M. H., Sahana, M., & Avtar, R. (2022). Analysing the relationship between drought and soil erosion using vegetation health index and RUSLE models in Godavari middle sub-basin, India. Geoscience Frontiers, 13(2), 101312.‏
  9. Mianabadi, A., Salari, K., & Pourmohamad, Y. (2022). Drought monitoring using the long-term CHIRPS precipitation over Southeastern Iran. Applied Water Science, 12(8), 183.
  10. Raposo, V. D. M. B., Costa, V. A. F., & Rodrigues, A. F. (2023). A review of recent developments on drought characterization, propagation, and influential factors. Science of the Total Environment, 165550.‏
  11. Sen, P.K.) 1968(. Estimate of the regression coeffients based on Kendal’s tau. J. Am. Pharm. Assoc. 63: 1379-1389.
  12. Talafre, J., Knabe, F.,) 2009(. Climate change and water: an overview from the world water development report 3: water in a changing world, World Water Assessment Programme special report
  13. Wang, H., Zhou, J., Tang, Y., Liu, Z., Kang, A., & Chen, B. (2021). Flood economic assessment of structural measure based on integrated flood risk management: A case study in Beijing. Journal of Environmental Management, 280, 111701.‏
  14. Xu, X., Wang, Y.C., Kalcic, M., Muenich, R. L., Yang, Y. E., & Scavia, D. (2019). Evaluating the impact of climate change on fluvial flood risk in a mixed-use watershed. Environmental modelling & software, 122, 104031.
  15. Yang, Y., Weng, B., Bi, W., Xu, T., Yan, D., & Ma, J. (2019). Climate change impacts on drought-flood abrupt alternation and water quality in the Hetao Area, China. Water, 11(4), 652.‏
  16. Yevjevich, V. (1967). An objective approach to definitions and investigations of continental hydrologic droughts, in Hydrology Papers No. 23 (Fort Collins, CO: Colorado State University).
  17. Yin, J., Gentine, P., Slater, L., Gu, L., Pokhrel, Y., Hanasaki, N. & Schlenker, W. (2023). Future socio-ecosystem productivity threatened by compound drought–heatwave events. Nature Sustainability, 6(3), 259-272.
  18. Zhang, Y., You, Q., Ullah, S., Chen, C., Shen, L., & Liu, Z. (2023). Substantial increase in abrupt shifts between drought and flood events in China based on observations and model simulations. Science of the Total Environment, 876, 162822.‏
  19. Zhu, M., & Fan, B. (2021). Exploring the relationship between rising temperatures and the number of climate-related natural disasters in China. International journal of environmental research and public health, 18(2), 745.‏