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Analysis of Radiative Characteristics at Urban Area by Observation in Summer Season

하절기 도시의 지역별 장.단파복사 특성 분석과 해석

  • Received : 2011.06.07
  • Accepted : 2011.06.24
  • Published : 2011.06.30

Abstract

The objective of this study is to analyze the characteristic of radiation environment in the urban and rural through the field observation in the summer. The radiation balance was compared through the measurement of the shortwave radiation and long-wave radiation in the urban, sub-urban, and rural. The following conclusion could be obtained from this research. (1)In the results of observation including the rain-day, it was found that the short wave radiance in the urban is lower about 10% than the rural. (2)The upper part of atmosphere layers in the urban are aabsorb much short wave radiation energies compared with the rural relatively. It can increase the temperature of the upper part of atmosphere layers and the emittance of long wave radiation. (3)The ratio of the downward short wave radiation to the downward long wave radiation was 1.24 for the urban, 1.28 for sub-urban and 1.35 for rural. It can be estimated that the atmosphere condition of the rural is better than that of other areas. (4)The net radiation of the rural was lower that of the urban. It was found that the energy in and outflow of the rural is easier than that of the urban. (5)The temperature variation for the long-wave radiation change of the rural showed more sensitive than that of the urban. It was came from the radiation characteristics of the surrounding environment and can be used as the important index to evaluate the thermal environment characteristic of urban.

Keywords

Radiant environment;Radiant balance;Short wave radiation;Long wave radiation;Albedo;Urban canopy radiation;Urban climate

References

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  2. Long and Short Wave Radiation and Correlation Analysis Between Downtown and Suburban Area(II) - Study on Correlation Analysis Method of Radiation Data - vol.33, pp.4, 2013, https://doi.org/10.7836/kses.2013.33.4.101
  3. Analysis on Daily Variation Mechanism of Short-wave Radiation between Downtown and Suburban Area during Summer Season vol.34, pp.4, 2014, https://doi.org/10.7836/kses.2014.34.4.111
  4. Analysis of Meteorological and Radiation Characteristics using WISE Observation Data vol.39, pp.1, 2018, https://doi.org/10.5467/JKESS.2018.39.1.89