| Title |
An Analysis on the Thermal Environment Characteristics of a Coastal City in Summer - Case Study of the Range of Haeundae District in Busan - |
| Authors |
Yoon Seong-Hwan ; Yeo In-Ae |
| Keywords |
Urbanization ; Climate Change ; Thermal Environment ; Urban Climate Simulation System ; Urban Planning |
| Abstract |
This study accomplished urban climate simulation on the base of E-GIS(Environment-Geographic Information System) DB using UCSS(Urban Climate Simulation System) which is 3?dimensional urban climate simulation system and analyzed the characteristics of urban thermal environment reflected by the combination of urban structures like building condition, land coverage and topology. The results of this study are as follows. 1) Urban structure information was constructed as E-GIS DB to derive typical urban climate phenomenon quantitatively. Numerical simulation of summer typical day was executed on the area of 10km?11.6km of Haeundae district in Busan. 2) At the high building covered zones in the built up area with typical urban characteristics, almost over 30℃ of air temperature was appeared at 14 o’clock and around 27℃ of air temperature had been maintained until 6 o’clock when the lowest air temperature of a day appeared. As to forming thermal environment composition like heat waves during the daytime and tropical night by the urbanization, over 30℃ of air temperature appeared in 63%(89%, building located area) of the whole study area at 14 o’clock and over 25℃ appeared in 32%(77%, building located area) at 6 o’clock. 3) Urban climate characteristics were analyzed on the base of urban structure with the climatal elements, output as a result of UCSS. Almost over 31℃ of air temperature was formed at the building coverage ratio of more than 30% with artificial land coverage. When water coverage ratio or trees coverage ratio was increased to 100%, temperature declined to 27～28℃ each. Higher Temperature was as inverse proportion to wind velocity decrease by the result of heat mixture decline of generated from the ground. These results implies that disadvantageous thermal environment was formed throughout the whole study area because of intensive urbanization but also there exists the potentiality of introducing lower temperature characteristics of environmentally friend design strategies of the study area. |