Urban open spaces such as parks can act as urban cool islands. For example, in Seoul, Korea, the many Lee Dynasty royal palaces and tombs act as urban cool islands that reduce the temperature of the park compared with the surrounding urban areas. In order to determine the effect of air temperature differences because of the urban royal tomb park, Seolleung Royal Tomb Park (SPK) and the nearby Seolleung subway station (SLS), air temperatures were recorded at 10 min intervals from November 9th, 2007 to November 8th, 2008. The data were analyzed and examined to illustrate air temperature-reducing effects during the day and over the year. Results of the investigation show that the average air temperature differences due to SPK in the nearby SLS was 1.76°C, and the maximum air temperature-reducing effects due to SPK occur in September, not during the winter. The air temperaturereducing effect due to SPK decreases rapidly from the park boundary, because of the urban morphology and land use.

A BSTRA CTTo investigate the air temperature difference between windward and leeward side at high-rise building area, the air temperature and relative humidity data were observed for 10 minute interval from July 9, 2011 to November 30, 2011. The observed data were compared, analyzed and examined to illustrate air temperature between windward side (H Apartment) and Leeward side (W Apartment).The diurnal and seasonal variation of air temperature difference between windward and leeward site were also investigated. After the analysis, the overheat of windward side by 0.4 irrespective short ℃ distance of two observation positions. It was also lower than those of surrounding air temperature observing stations. It is mainly due to the air temperature decreasing effects of leeward side of high rise buildings.

I nS e o u l ,s k y s c r a p e r sa r eb u i l ti nc o mme r c i a lz o n e sk n o w na sr e s i d e n t i a l -c o mme r c i a lc o mp l e x e s ,w h i c hc a u s es u c h e n v i r o n me n t a lp r o b l e msa su r b a nh e a ti s l a n d s ( UH I )a n da i rp o l l u t i o n .