실험을 통한 한국형 체감온도지수를 개발하기 위하여 실험을 수행할 경우 필요한 피험자의 선발과정, 실험의 정확도, 피험자의 안전 및 실험에서 발생하게 될 여러 가지 상황을 대비하기 위해서 예비실험을 실시하였다. 예비실험에서는 저온에 의한 인체의 영향을 최소화하기 위해 영상 5˚C에서 풍속을 무풍에서 강풍으로 변화시키면서 실험조건과 인체의 안전에 대해 살펴보았다. 그 결과, 안면부 부위별 피부온도변화의 경우 얼굴의 오른쪽 부위이 기온과 풍속변화에 가장 민감하여 안정적인 변화경향을 나타내었으며 모든 피험자가 얼굴의 오른쪽 부위에서 가장 낮은 온도를 보였다. 성별에 따른 차이에서는 여성이 남성보다 더 민감하게 반응하였으며, 약한 풍속에서 피부온도가 크게 변화함을 알 수 있었으며, 기준풍속에 따른 영향은 체감온도지수 개발시 고려하지 않는 것이 바람직함을 알 수 있었다.

이 연구는 한국형 체감온도지수를 개발 보급하기 위한 생명기상분야 기초연구로서 현재 기상청에서 사용하고 있는 체감온도 모델의 민감도 분석을 수행하였다. 분석 결과 한반도는 도심지역, 해안도서지역, 내륙지역, 산간지역으로 구분되었다. 평균기온의 경우, 해안도서지역에서 가장 높았으며, 산간지역에서 가장 낮게 나타났다. 그러나 최저기온은 도심지역과 해안도서지역에서 영하 20˚C이고, 내륙지역과 산간지역에서 영하 30˚C로 나타났다. 풍속의 경우, 평균 풍속과 최대 풍속이 모두 해안도서지역에서 강하게 나타났다. 그리고 동계의 지역별 기온과 풍속의 분포는 전 기간의 분포와 비슷한 경향을 보였다. JAG/TI와 Missenard 모델의 민감도 분석 결과, 기온이 체감온도에 더 큰 영향을 미친다. 그러나 영하의 온도에서는 풍속의 영향이 증가한다.

Characteristics of precipitation and temperature in Ulleung-do and Dok-do were analyzed with hourly accumulated precipitation and mean temperature data obtained from Automatic Weather System(AWS) for latest four years(2005∼2008). In Ulleung-do, total annual mean precipitation for this period is 1,574.4 mm, which shows larger amount than 1434.2 mm of whole Korean peninsula for latest 10 years(1999∼2008) and 1,236.2 mm at Ulleung-do on common years(1971∼2000), shows that the trend of precipitation gradually increases during the recent years. This amount is also 1.4 times larger than the total annual mean precipitation of 660.1 mm in Dok-do. Mean precipitation intensity(mm ) at each time of a day in each month at Ulleung-do represents that the maximum values larger than 3.0 mm were shown in May and on 0200 LST, whereas these were found in August and 0700 LST with 3.1 mm in Dok-do. The difference of the precipitation amount and its intensity between Uleung-do and Dok-do is explained by the topological effect came from each covering area, and this fact is also identified from similar comparison of the precipitation characteristics for the islands in West Sea. The annual mean temperature of 14.0 ℃ in Dok-do is 1.2 ℃ higher than that of 12.8 ℃ in Ulleung-do. Trends of monthly mean temperature in both islands are shown to increase for the observed period.

This paper aims to provide a fundamental basis for the improvement and verification of existing wind chill temperature index through the observation of skin temperature change of human body with air temperature and wind speed. For this, we control air temperature 5℃ interval from 0℃ to -20℃ and classify wind speed by 0, 2, 6 and 8 m s-1 respectively. The results are as follows; At each combination of air temperature and wind speed, the reduction rate of the mean skin temperature are different. When our body is exposed to the atmosphere, the mean skin temperature decreases at an exponential rate. The duration of the steady state is more than one hour, while it decreases with strong wind speed. Among 4 sites on a face, the skin temperature of forehead is the highest, followed by one of chin, left cheek, right cheek in orders. Especially, since the skin temperature of right cheek is the lowest, we think that it is suitable to use the data set of the right cheek skin temperature for the development of a Korea wind chill temperature index as a worst case.

This study aims to produce fundamental database for Environment Impact Assessment by monitoring vertical structure of the atmosphere due to the mountain valley wind in spring season. For this, we observed surface and upper meteorological elements in Sangin-dong, Daegu using the rawinsonde and automatic weather system(AWS). In Sangin-dong, the weather condition was largely affected by mountains when compared to city center. The air temperature was low during the night time and day break, and similar to that of city center during the day time. Relative humidity also showed similar trend; high during the night time and day break and similar to that of city center during the day time. Solar radiation was higher than the city, and the daily maximum temperature was observed later than the city. The synoptic wind during the measurement period was west wind. But during the day time, the west wind was joined by the prevailing wind to become stronger than the night time. During the night time and daybreak, the impact of mountain wind lowered the overall temperature, showing strong geographical influence. The vertical structure of the atmosphere in Dalbi valley, Sangin-dong had a sharp change in air temperature, relative humidity, potential temperature and equivalent potential temperature when measured at the upper part of the mixing layer height. The mixing depth was formed at maximum 1896m above the ground, and in the night time, the inversion layer was formed by radiational cooling and cold mountain wind.

In order to monitor the impact of high temperature which is seen frequently with climate change, we investigated the monthly change in globe temperature, air temperature, mean radiant temperature and effective radiant heat flow, because the four well reflect thermal radiation from bio-meteorological aspect. Both globe temperature and air temperature showed an increasing trend every month. Compared to air temperature, globe temperature had a wider range of temperature change and was more influenced by meteorological element such as precipitation. Diurnal trends of air temperature, globe temperature and the difference between their temperature had the lowest value before the sunrise and the highest around 1300～1500 LST, showing the typical diurnal trends. Globe temperature and the difference between their temperature had a sharp increase around 1000～1100 LST, maintained high value until 1700 LST and then reclined, though varied by month. The difference between globe temperature and air temperature was highly dependent on the amount of precipitation and clouds. The duration in which globe temperature was higher than air temperature was the lowest in July. Therefore the amount of precipitation was the most affecting, followed by the amount of clouds and wind. In order to find out the diurnal trends of temperature in city center and city outskirts, we assumed the roof of a concrete building as a city center, and the grass-covered observatory of the Gimhae International Airport as city outskirts. The diurnal trends of temperature in the two sites showed a strong correlation. The highest and lowest temperature also had the same trend.