Volume 11, Issue 3 (Spring- In Press 2026)
Health in Emergencies and Disasters Quarterly 2026, 11(3): 0-0 |
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Ethics code: IR.KHU.REC.1402.097
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Deyrmajaei A, Akbary M, Hejazizadeh Z, Saligheh M. Evaluation of the Impacts of Extreme Temperature Trends on Adverse Health Outcomes in Tehran. Health in Emergencies and Disasters Quarterly 2026; 11 (3)
URL: http://hdq.uswr.ac.ir/article-1-670-en.html
URL: http://hdq.uswr.ac.ir/article-1-670-en.html
1- Kharazmi University, Tehran, Iran.
2- Kharazmi University, Tehran, Iran. ,mehryakbary@khu.ac.ir
2- Kharazmi University, Tehran, Iran. ,
Abstract: (505 Views)
Background: Climate change and its consequences affect all aspects of human life, and with increasing of these consequences, short-term and long-term impacts are also intensified. One of the most important issues affected by climate change is public health. Tehran as a densely populated metropolis with a semi-arid climate; is located at the tip of the arrow is facing the risks caused by climate change.
Materials and Methods: This study analyzed ERA5 reanalysis data (1988-2022), validated using statistical indices. Trends were evaluated with the non-parametric Mann-Kendall test. Warm Spell Duration Index (WSDI) and Cold Spell Duration Index (CSDI) assessed thermal waves. Correlation between temperature, hospital visits, and population (2014-2022) was also examined.
Results: Tehran experienced a significant long-term temperature increase over 34 years, particularly in spring, winter, and July. Heatwave frequency increased, while cold waves decreased. Average temperatures during extreme events also rose. Temperature and hospital visits showed a 0.61 correlation. Population, hospital visits, and annual average temperature increased by 4.98%, 16.42%, and 2.11% respectively.
Discussion: Hotter conditions and rising temperatures directly influence public health. The disproportionate growth in disease occurrence compared to population highlights the critical impact of extreme temperature events on hospital visit rates, emphasizing the escalating health burden from observed climate change.
Conclusion: This research confirms a shift towards hotter conditions and a rising temperature trend in Tehran. The significant correlation between temperature and hospital visits, alongside disproportionate disease growth, strongly suggests that extreme temperature events and rising temperatures are key drivers for increased hospital visit.
Materials and Methods: This study analyzed ERA5 reanalysis data (1988-2022), validated using statistical indices. Trends were evaluated with the non-parametric Mann-Kendall test. Warm Spell Duration Index (WSDI) and Cold Spell Duration Index (CSDI) assessed thermal waves. Correlation between temperature, hospital visits, and population (2014-2022) was also examined.
Results: Tehran experienced a significant long-term temperature increase over 34 years, particularly in spring, winter, and July. Heatwave frequency increased, while cold waves decreased. Average temperatures during extreme events also rose. Temperature and hospital visits showed a 0.61 correlation. Population, hospital visits, and annual average temperature increased by 4.98%, 16.42%, and 2.11% respectively.
Discussion: Hotter conditions and rising temperatures directly influence public health. The disproportionate growth in disease occurrence compared to population highlights the critical impact of extreme temperature events on hospital visit rates, emphasizing the escalating health burden from observed climate change.
Conclusion: This research confirms a shift towards hotter conditions and a rising temperature trend in Tehran. The significant correlation between temperature and hospital visits, alongside disproportionate disease growth, strongly suggests that extreme temperature events and rising temperatures are key drivers for increased hospital visit.
Type of article: Research |
Subject:
General
Received: 2024/10/17 | Accepted: 2025/09/6 | Published: 2026/05/20
Received: 2024/10/17 | Accepted: 2025/09/6 | Published: 2026/05/20
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This is an open access article distributed under the terms of the Creative Commons Attribution License (CC-By-NC), which permits use, distribution, and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
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