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Advances in Science and Research Contributions in Applied Meteorology and Climatology
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Volume 6, issue 1
Adv. Sci. Res., 6, 173–178, 2011
https://doi.org/10.5194/asr-6-173-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
Adv. Sci. Res., 6, 173–178, 2011
https://doi.org/10.5194/asr-6-173-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

  14 Jun 2011

14 Jun 2011

Analysis of climate hazards in relation to urban designing in Iran

S. Alijani1 and B. Alijani2 S. Alijani and B. Alijani
  • 1Department of Urban Designing, Islamic Azad University, Tehran, Iran
  • 2Center of Excellence for Spatial Analysis of Environmental Hazards, Tarbiat Moallem University, Tehran, Iran

Abstract. In order to study the climate hazards, daily rainfall and temperature data of 61 weather stations over the country were obtained from the Meteorological Organization of Iran for the 1951–2007 period. The following indices are defined as indications of climate hazards: sultriness of the air or the heat index, cold days with minimum temperature below −5 °C, warm days with maximum temperature above 32 °C, the share of extreme rain days from the annual rainfall. The annual frequencies of these indices are analyzed and the overall hazard index is computed using the Analytical Hierarchical Process method.

The results show that the southern coastal areas and central deserts are the most hazardous parts of the country, whereas, the northern Caspian coastal lands and mountainous regions experience lower hazard alerts. The problem of the northern parts is the cold days and that of the southern areas is the hot and humid days. Despite the relatively equal occurrence of torrential rains over the country, they are more harmful in the south than in the other parts of the country.

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