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http://dx.doi.org/10.12652/Ksce.2010.30.1B.071

Evaluation of Urban Effects on Trends of Hydrometeorological Variables  

Rim, Chang-Soo (청운대학교 철도행정토목학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.30, no.1B, 2010 , pp. 71-80 More about this Journal
Abstract
This study aimed to figure out the effect of urbanization on meteorological variables (air temperature, wind speed, relative humidity, solar radiation and precipitation) and reference evapotranspiration (RET). The research area of 6 urban areas and 6 rural areas near each urban area was selected. The monthly average daily data were collected from 12 ground stations operated by Korea Meteorological Administration (KMA) and the changes in climate variables were analyzed. Results of annual analysis have shown that the reference evapotranspiration (RET) tends to increase in urban areas while decreasing in rural areas. In particular, due to rising RET in urban areas and decreasing RET in rural areas, we can infer that the urbanization has affected to the RET. Results of monthly analysis showed that the urbanization has effects on the RET of July compared to other months (January, April and October). The yearly and monthly effects of urbanization on RET were closely related to solar radiation, relative humidity and change in temperature, and related to wind speed.
Keywords
climate change; reference evapotranspiration; urban effect; natural effect;
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