Land Use Change in Cities and Changes in Radiation Characteristics Case study: Mazandaran

Authors

1 Ph.D. Student, Geography, Urban Climate, Faculty of Basic Sciences, Islamic Azad University, Noor Branch

2 Assistant Professor of Climatology, Faculty of Humanities and Social Sciences, Mazandaran University, Babolsar

3 Assistant Professor of Climatology, Faculty of Basic Sciences, Islamic Azad University, Noor Branch

Abstract

Changing the balance of radiation through urbanization and change in Land use has led to an increase in the temperature of cities. The radiation Balance is calculated through the properties of the Net radiation flux (RN) including Albedo (α), long input wavelength (RL ↓), short input (RS), the Long output radiation (RL ↑), and Land Surface temperature (LST) is measured. The research has examined the radiation Balance by using satellite images of Landsat 4-5 and 8 for the years 1998, 2010 and 2017 in August for Mazandaran. The characteristics of Net radiation in various Land use (urban and suburban residential areas, urban green spaces and suburbs) were analyzed by ANOVA and Tukey's post hoc test. The results showed that the amount of radiation flux in the selected applications has a significant difference. The differences are due to changes in the output energy (α and RL ↑), and any build-up and reduction of vegetation in the region will ultimately lead to changes in the radiation pattern and the formation of the new climate. Therefore, part of the process of increasing the temperature of the meteorological stations located within the city, not because of climate change and global warming but also from urban development and change of Land use.

Keywords

Urban Structure and Function Studies
Volume 6, Issue 21
December 2019
Pages 161-178

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History

  • Receive Date: 14 May 2019
  • Revise Date: 14 August 2019
  • Accept Date: 10 December 2019

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