To investigate thermal environment and effect of clean-road system over a broad way, we conducted the filed meteorological observation during 12~13 August 2014. The clean-road system was employed over a part of the broad way of Dalgubul(Dalgubul-Daero) by Daegu Metropolitan city in 2011. The clean–road system in general is operated two times(4 am, 2 pm) during summertime. In case of scorching alert, the system is operated 3 times a day(4 am, 2 pm and 4 pm).
To evaluate the present thermal condition and the improvement effects due to the system, we analyzed the time variation of discomfort index and WBGT(wet-bulb and globe temperature). WBGT was more than 25 during 8 a.m. ~ 9 p.m. And discomfort index was more than 75 during 8 a.m. ~ 11 p.m. The thermal improvement effect of the clean-road system was restrictive during daytime.

Abstract
 1. 서 론
 2. 자료 및 방법
  2.1. 야외 관측 조사
  2.2. 자료의 분석방법
 3. 결과
 4. 결론 및 고찰
 REFERENCE

• 김성락(계명대학교 환경대학) | Sung-Rak Kim (Department of Global Environment, Keimyung University)
• 정응호(계명대학교 환경대학) | Eung-Ho Jung (Department of Global Environment, Keimyung University)
• 김해동(계명대학교 환경대학) | Hae-Dong Kim (Department of Global Environment, Keimyung University) Corresponding author