Mitigating the Urban Heat Island Effect in Megacity Tehran

Joint Authors

Cubasch, Ulrich
Sodoudi, Sahar
Vollack, Ken
Shahmohamadi, P.
Che-Ani, A. I.

Source

Advances in Meteorology

Issue

Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-19, 19 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2014-09-07

Country of Publication

Egypt

No. of Pages

19

Main Subjects

Physics

Abstract EN

Cities demonstrate higher nocturnal temperatures than surrounding rural areas, which is called “urban heat island” (UHI) effect.

Climate change projections also indicate increase in the frequency and intensity of heat waves, which will intensify the UHI effect.

As megacity Tehran is affected by severe heatwaves in summer, this study investigates its UHI characteristics and suggests some feasible mitigation strategies in order to reduce the air temperature and save energy.

Temperature monitoring in Tehran shows clear evidence of the occurrence of the UHI effect, with a peak in July, where the urban area is circa 6 K warmer than the surrounding areas.

The mobile measurements show a park cool island of 6-7 K in 2 central parks, which is also confirmed by satellite images.

The effectiveness of three UHI mitigation strategies high albedo material (HAM), greenery on the surface and on the roofs (VEG), and a combination of them (HYBRID) has been studied using simulation with the microscale model ENVI-met.

All three strategies show higher cooling effect in the daytime.

The average nocturnal cooling effect of VEG and HYBRID (0.92, 1.10 K) is much higher than HAM (0.16 K), although high-density trees show a negative effect on nocturnal cooling.

American Psychological Association (APA)

Sodoudi, Sahar& Shahmohamadi, P.& Vollack, Ken& Cubasch, Ulrich& Che-Ani, A. I.. 2014. Mitigating the Urban Heat Island Effect in Megacity Tehran. Advances in Meteorology،Vol. 2014, no. 2014, pp.1-19.
https://search.emarefa.net/detail/BIM-1034219

Modern Language Association (MLA)

Sodoudi, Sahar…[et al.]. Mitigating the Urban Heat Island Effect in Megacity Tehran. Advances in Meteorology No. 2014 (2014), pp.1-19.
https://search.emarefa.net/detail/BIM-1034219

American Medical Association (AMA)

Sodoudi, Sahar& Shahmohamadi, P.& Vollack, Ken& Cubasch, Ulrich& Che-Ani, A. I.. Mitigating the Urban Heat Island Effect in Megacity Tehran. Advances in Meteorology. 2014. Vol. 2014, no. 2014, pp.1-19.
https://search.emarefa.net/detail/BIM-1034219

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1034219