Effect of an urban park on air temperature differences in a central business district area

摘要

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℃, and the maximum air temperature-reducing effects due to SPK occur in September, not during the winter. The air temperature-reducing effect due to SPK decreases rapidly from the park boundary, because of the urban morphology and land use.