# Observational Study for the Thermal Environment Evaluation of Summertime over the Asphalt Pavement - Case Study in Daegu 2014 -

• Kim, Hae-Dong (Dept. of Global Environment, Keimyung University) ;
• Kim, Sung-Rak (Dept. of Global Environment, Keimyung University) ;
• Kim, Baek-Jo (Applied Meteorology Research Division, National Institute of Meteorological Research, KMA)
• Accepted : 2015.10.26
• Published : 2015.10.31
• 83 25

#### Abstract

To investigate the thermal environment over the summertime asphalt pavements, an automatic weather observation system was installed at a parking lot paved with asphalt to observe various meteorological parameters and surface temperature from July 1 to September 30, 2014. Since the number of rainy days in summer of 2014 particularly after the mid July is more than that of average data, a ratio of daily peak surface temperature above $45^{\circ}C$ was 28% which was lower than the average. The observational data about hourly average surface temperature and various heat balance factors at days where daily peak surface temperature is above $45^{\circ}C$ are as follows: An hour that had the daily maximum temperature was around 15 pm and the value was $49^{\circ}C$ approximately. Net shortwave radiation was the highest at 12pm as $800W/m^2$ and much radiation of $500W/m^2$ was absorbed at the ground between 11am and 17pm. Sensible heat that was delivered from the ground to the atmosphere was evaluated as $200W/m^2$ between 10am and 19pm. underground transfer heat up to $100W/m^2$ was measured as negative from 19pm to the next day 8am, which indicated the lower atmosphere was heated at night.

#### Acknowledgement

Grant : 응용기상기술개발연구

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