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The social and economic damages caused by climate change have increased rapidly over the last several decades, with increasing instances of heatwaves, floods, and extreme rainfall. In 2011, heavy rain of 110.5 mm/hr caused great damage to the Seoul Metropolitan Government. Most of the causes of flooding in modern cities include a sharp increase in non-permeable pavement and a lack of water circulation facilities. It is predicted that heavy rainfalls will occur in the future, causing large amounts of local damage. In this study, possible future flood damages were analyzed using climate change scenarios based on the Korean Peninsula. ArcGIS was adopted to perform analyses, and Huff curves were employed for precipitation analysis. Water tanks, permeable pavement, and ecological waterways were installed as mitigation technologies. These three technologies can contribute to flooding mitigation by increasing the rainwater storage capacity. This study suggests that all floods can be reduced by RCP 8.5 by 2050 and 2060. Although there will be run-off after 2050, it is believed that technology will significantly reduce the volume and possibility of floods. It is recommended that a one-year analysis should be conducted in consideration of the maintenance aspects that will arise in the future.
Jaekyoung Kim; Junsuk Kang. Analysis of Flood Damage in the Seoul Metropolitan Government Using Climate Change Scenarios and Mitigation Technologies. Sustainability 2020, 13, 105 .
AMA StyleJaekyoung Kim, Junsuk Kang. Analysis of Flood Damage in the Seoul Metropolitan Government Using Climate Change Scenarios and Mitigation Technologies. Sustainability. 2020; 13 (1):105.
Chicago/Turabian StyleJaekyoung Kim; Junsuk Kang. 2020. "Analysis of Flood Damage in the Seoul Metropolitan Government Using Climate Change Scenarios and Mitigation Technologies." Sustainability 13, no. 1: 105.
Increasing urbanization has highlighted the need for more green spaces in built-up areas, with considerable attention of vertical installations such as green walls and rooftop gardens. This study hypothesizes that the rooftop-garden-induced temperature reduction effects vary depending on the type of arrangements. Therefore, the objective of this study is to find the most efficient arrangement of the roof gardens for temperature reduction. This paper presents the results of a quantitative analysis of the temperature reduction effect of rooftop gardens installed on structures and sites on the campus of Seoul National University. An ENVI-Met simulation is utilized to analyze the effects of roads, buildings, green areas, and vacant land on temperature and humidity. The effects of the following five rooftop garden configurations were compared: extreme, linear (longitudinal), linear (transverse), checkerboard, and unrealized rooftop gardens. The extreme and linear (longitudinal) gardens achieved the maximum temperature reduction, −0.3 °C, while the lowest maximum reduction of −0.2 °C was achieved by the checkerboard pattern. Over larger areas, the greatest impact has been recorded in the mornings rather than in the afternoons. The results of this study will be useful for those planning and installing rooftop gardens at the district and city levels.
Jaekyoung Kim; Sang Yeob Lee; Junsuk Kang. Temperature Reduction Effects of Rooftop Garden Arrangements: A Case Study of Seoul National University. Sustainability 2020, 12, 6032 .
AMA StyleJaekyoung Kim, Sang Yeob Lee, Junsuk Kang. Temperature Reduction Effects of Rooftop Garden Arrangements: A Case Study of Seoul National University. Sustainability. 2020; 12 (15):6032.
Chicago/Turabian StyleJaekyoung Kim; Sang Yeob Lee; Junsuk Kang. 2020. "Temperature Reduction Effects of Rooftop Garden Arrangements: A Case Study of Seoul National University." Sustainability 12, no. 15: 6032.