The characteristics of time changes in air temperature, DI (discomfort index) and WBGT (wet-bulb globe temperature) were investigated for inland city (daegu) and coastal city (pohang) of Gyeongbuk Province during the 2018 consecutive heat wave season. The time when the temperature dropped below 33℃ was around 19h in both regions. As such, the two regions were similar with respect to the time up to which the heatwave warning levels continued. However, the discomfort index (DI) was higher than 27 in Pohang. Most people feel unpleasant when an discomfort index of 27 or higher appears. The results indicated that Korea's night-time thermal environment during the summers is particularly poor in the southern coastal areas. WBGT began at 09:00 and lasted until 21:00, with a score of 31 or higher; this score, in principle, corresponded with the duration of outdoor activity in both regions. Therefore, it was found that outdoor work was at a level where all day long had to be stopped in both areas during the heat wave. Although time changes in temperature and WBGT were similar in both regions, Discomfort Index (DI) differed significantly. The difference refers to the fact that Pohang is strongly affected by the high heat capacity effect and the supply of water vapor from the sea.

Abstract
1. 서 론
2. 재료 및 방법
3. 결과 및 고찰
    3.1. 기온과 습도의 비교
    3.2. 불쾌지수와 WBGT의 비교
4. 결 론
REFERENCES

• 추승현(계명대학교 환경과학과) | Sung-Hyun Choo (Department of Environmental Science, Keimyung University)
• 안은지(계명대학교 환경과학과) | Eun-Ji An (Department of Environmental Science, Keimyung University)
• 김해동(계명대학교 자연과학대학 지구환경학전공) | Hae-Dong Kim (Major in Global Environment, Faculty of Environment, College of Natural Sciences, Keimyung University) Corresponding author