Variation in physical characteristics of rainfall in Iran, determined using daily rainfall concentration index and monthly rainfall percentage index

Kaboli, Sadegh; Hekmatzadeh, Ali Akbar; Darabi, Hamid; Haghighi, Ali Torabi

doi:10.1007/s00704-021-03553-9

Cited by 34 publications

(7 citation statements)

References 59 publications

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“…Given that climate and land use are the main drivers of flash flooding, most recent floods can be attributed to changes in extreme precipitation and land cover over Iran. Many studies have analyzed the precipitation trend for different spatial and temporal scales over Iran [29][30][31][32][33][34][35][36][37][38]. However, a few studies have investigated the historical trend and changes in extreme precipitation over Iran.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Changes in Air Temperature and Precipitation Extremes over Iran

Jamali

Gohari

Motamedi

et al. 2022

Water

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In this study, a comprehensive trend analysis was employed to study the spatiotemporal changes in precipitation characteristics with an increased temperature, as well as over time. The nonparametric Mann–Kendall test and the quantile regression methods were applied to detect the plausible temporal trends in 11 extreme rainfall indices and three temperature indices employed in this study. The results showed there was little evidence to suggest that increases in the maximum of 3-h and 24-h precipitation at higher temperatures resulted in similar increases in the annual precipitation, with most stations throughout Iran showing drying features with higher temperatures. Generally, most regions over Iran scaled negatively, implying a reduction in the annual precipitation ranging from −2.64 to −0.44 mm/°C at higher temperatures. The linear tendencies of the maximum 24-h precipitation ranged from −0.4 to 0.23 mm/°C. The annual precipitation of the stations located at Urmia Lake, Caspian Sea, and the Eastern Border Basins showed a decreasing trend (−3.70 to 1.11 mm/year), while the number of rainy days increased (−2.78 to 4.72), which showed the occurrence of lighter rainfall in these regions. The increasing trend in the maximum 24-h precipitation over Western and Central Iran implied a higher probability of extreme precipitation with a higher intensity. This study revealed that the shift in precipitation extremes shifted from fall to winter by increasing the elevation, but these effects have no statistical significance in Iran.

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Section: Introductionmentioning

confidence: 99%

Spatiotemporal Changes in Air Temperature and Precipitation Extremes over Iran

Jamali

Gohari

Motamedi

et al. 2022

Water

Self Cite

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“…The latter exceeds that of a few countries around Iran, such as the United Arab Emirates, or UAE (16 m 3 as of 2020) [22], is slightly less than a few countries in the region, such as Turkey (~1500 m 3 as of 2020), and is below the global average (i.e., ~5730 m 3 ) [22]. Iran's annual average precipitation is approximately 250 mm [23], varying spatiotemporally and disproportionally across the country. Twenty-five percent of the country receives more than seventy-five percent of the annual precipitation volumewise [18].…”

Section: Biophysical and Sociopolitical Context 21 Water Resources An...mentioning

confidence: 93%

Investigating the Impacts of the Political System Components in Iran on the Existing Water Bankruptcy

Ketabchy

2021

Sustainability

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Iran is suffering from a state of water bankruptcy. Several factors have contributed to the current water resources bankruptcy, ranging from anthropogenic impacts, such as an inefficient agricultural sector and aggressive withdrawal of groundwater, to climatological impacts. This paper suggests that water resources mismanagement in Iran should be evaluated beyond the policy-makers decisions, as it recognizes that the bankruptcy has been intensified due to the structural and institutional form of the political system in Iran. This study discusses the roots of the water bankruptcy and identifies four major shortcomings caused by the political system: (1) the absence of public engagement due to the lack of a democratic and decentralized structure; (2) adopting ideological policies in domestic and foreign affairs; (3) conflicts of interest and the multiplicity of governmental policy-makers and sectors; and (4) a state-controlled, resource-dependent economy. Through the development of a generic causal model, this study recommends a systematic transition towards a democratic, decentralized, non-ideological, and economically diverse political governance as the necessary–but not necessarily sufficient–adaptive and sustainable solution for mitigating the impacts of water resources bankruptcy in Iran. The insights highlighted in this paper could be employed to inform water resources decision-makers and political actors in other non-democratic and ideological political structures struggling with a water resources crisis or bankruptcy.

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“…The damages of oods are effective in developing countries (Loudyi and Kantoush, 2020), including Iran. Although, Iran is classi ed as arid and semi-arid with an average rainfall of 1/3 of the world (Kaboli et al, 2021), great oods occurred in part of the country which have low average annual precipitation (Vaghe et al, 2019). Existing studies based on hydrological statistics and ood events show that the southern and southwestern regions of Iran are the most ood-prone parts of this country.…”

Section: Introductionmentioning

confidence: 99%

Extreme rainfall in south and south west of Iran and its association with Atmospheric Rivers (ARs)

Kamal

Sepandar

Khosravi

2022

Preprint

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Atmospheric rivers (ARs) are long narrow band of high water vapor flux that closely related to heavy rainfall. Flooding from heavy rainfall is one of the major hazards in south and south west of Iran. In this paper, the connection between ARs and heavy rainfall is analyzed by a methodology based on the vertically integrated water vapor transport (IVT). Heavy rainfall days are identified from the Iran Meteorological Organization (IRIMO) from 1987 to 2019. Our results suggest that, all inclusive heavy rainfall events over the south and southwest of Iran are associated with the contributions by the ARs and they matches tend to peak in the cool season. Larger IVT value in the region related to more precipitation and play important role in determining the amount of it. The IVT value intense when the AR crossed over the region. According to the results, there were four major sources of ARs that effected on south and south west of Iran generally include Gulf of Aden, the Red Sea, Arabian Sea and Soudan. The Red Sea is the most important source of moisture those intense ARs on their path in this region.

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Variation in physical characteristics of rainfall in Iran, determined using daily rainfall concentration index and monthly rainfall percentage index

Cited by 34 publications

References 59 publications

Spatiotemporal Changes in Air Temperature and Precipitation Extremes over Iran

Spatiotemporal Changes in Air Temperature and Precipitation Extremes over Iran

Investigating the Impacts of the Political System Components in Iran on the Existing Water Bankruptcy

Extreme rainfall in south and south west of Iran and its association with Atmospheric Rivers (ARs)

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