• Title/Summary/Keyword: Urban climate change

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A Study about the Impact of Atmospheric Environmental Changes by Urban Development on Human Health (도시개발에 따른 대기환경 변화가 건강에 미치는 영향연구)

  • Kim, Jea-Chul;Lee, Chong-Bum;Cheon, Tae-Hun;Jang, Yun-Jung
    • Journal of Environmental Impact Assessment
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    • v.19 no.1
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    • pp.15-28
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    • 2010
  • Because deterioration of air quality and urban heat island directly harm health of citizens, Health Impact Assessment (HIA) and Environmental Impact Assessment (EIA) for urban development projects needs to conduct analysis of their impacts objectively. This study aims to review appropriate methods for assessment of air quality used at each stage of urban development and to investigate prediction and assessment methods of urban heat island. In addition, by evaluating impacts of climate change following supposed urban construction performed in the central area of Korea on public health, it examines usefulness of HIA for urban construction. When urban heat island prediction and HIA method suggested in this study are applied to an imaginary city, they predict urban heat island properly and the impacts of climate changes on public health inside the city could be determined clearly by calculating life-climate index and bio-climate index related with thermal environment from the model.

A Study on the Transport­oriented Development(TOD) and Policy Implication considering Climate Change: Focused on Dublin Public Transport Policy, Ireland (기후변화를 고려한 대중교통지향적 도시개발(TOD)과 정책적 시사점: 아일랜드, 더블린 대중교통정책을 중심으로)

  • Oh, Eun-Yeol
    • Journal of Industrial Convergence
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    • v.17 no.4
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    • pp.45-51
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    • 2019
  • In this study, climate change considerations are an important measure to create a resilient city that conforms to the principle of sustainable development that balances the economic, social and environmental harmony of a country or city and can preserve its size, function and characteristics to the maximum extent possible. In this regard, the public transportation system being built and operated in Dublin City, Ireland, illustrates the city's system through green traffic. Therefore, based on the urban-based conditions equipped by Dublin, Ireland, in that Dublin is realizing preemptive mass-traffic-oriented urban development (TOD) considering climate change, the purpose of the study was to classify the methods of research as internal (strong and weak) and external (opportunity and threat) factors through SWOT analysis and to present mass-oriented urban development strategies and policy implications.

Effect of Climate Change on Water Quality in Seonakdong River Experimental Catchment (기후변화에 따른 서낙동강 시험유역에서의 수질영향 분석)

  • Kang, Ji Yoon;Kim, Jung Min;Kim, Young Do;Kang, Boo Sik
    • Journal of Korean Society of Water and Wastewater
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    • v.27 no.2
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    • pp.197-206
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    • 2013
  • Recently, climate change causes climatic anomaly such as global warming, the typhoon and severe rain storm etc. and it brings damage frequently. Climate change and global warming are prevalent all over the world in this century and many researchers including hydrologists have studied on the climate change. In this study, Seonakdong river watershed in the Nakdong river basin was selected as a study area. Real-time monitoring system was used to draw the rating curves, which has 0.78 to 0.96 of $R^2$. To predict runoff change in Seonakdong river watershed caused by climate change, the change in hydrologic runoff were predicted using the watershed model, SWAT. As a result, the runoff from the Seonakdong river watershed was increased by up to 45 % in summer. Because of the non-point sources from the farmland and the urban area, the water quality will be affected by the climate change. In this study, the operating plan of the water gates in Seonakdong river will be suggested by considering the characteristics of the watershed runoff due to the climate change. The optimal watergate opening plan will solve the water pollution problems in the reservoir-like river.

Potential Effects of Urban Growth under Urban Containment Policy on Streamflow in the Gyungan River Watershed, Korea

  • Kim, Jinsoo;Park, Soyoung
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.33 no.3
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    • pp.163-172
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    • 2015
  • This study examined the potential effects of urban growth on streamflow in the Gyungan River watershed, Korea, using urban containment scenarios. First, two scenarios (conservation and development) were established, and SLEUTH model was adapted to predict urban growth into the year 2060 with 20 years interval under two scenarios in the study area. Urban growth was larger under scenario 2, focusing on development, than under scenario 1, focusing on conservation. Most urban growth was predicted to involve the conversion of farmland, forest, and grasslands to urban areas. Streamflow in future periods under these scenarios was simulated by the Soil and Water Assessment Tool (SWAT) model. Each scenario showed distinct seasonal variations in streamflow. Although urban growth had a small effect on streamflow, urban growth may heighten the problems of increased seasonal variability in streamflow caused by other factor, such as climate change. This results obtained in this study provide further insight into the availability of future water resource and can aid in urban containment planning to mitigate the negative effects of urban growth in the study area.

Prediction of Future Climate Change Using an Urban Growth Model in the Seoul Metropolitan Area (도시성장모델을 적용한 수도권 미래 기후변화 예측)

  • Kim, Hyun-Su;Jeong, Ju-Hee;Oh, In-Bo;Kim, Yoo-Keun
    • Journal of Korean Society for Atmospheric Environment
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    • v.26 no.4
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    • pp.367-379
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    • 2010
  • Future climate changes over the Seoul metropolitan area (SMA) were predicted by the Weather Research and Forecasting (WRF) model using future land-use data from the urban growth model (SLEUTH) and forecast fields from ECHAM5/MPI-OM1 GCM (IPCC scenario A1B). Simulations from the SLEUTH model with GIS information (slope, urban, hill-shade, etc.) derived from the water management information system (WAMIS) and the intelligent transportation systems-standard nodes link (ITS-SNL) showed that considerable increase by 17.1% in the fraction of urban areas (FUA) was found within the SMA in 2020. To identify the effects of the urban growth on the temperature and wind variations in the future, WRF simulations by considering urban growth were performed for two seasons (summer and winter) in 2020s (2018~2022) and they were compared with those in the present (2003~2007). Comparisons of model results showed that significant changes in surface temperature (2-meter) were found in an area with high urban growth. On average in model domain, positive increases of $0.31^{\circ}C$ and $0.10^{\circ}C$ were predicted during summer and winter, respectively. These were higher than contributions forced by climate changes. The changes in surface temperature, however, were very small expect for some areas. This results suggested that surface temperature in metropolitan areas like the SMA can be significantly increased only by the urban growth during several decades.

Analysis of Extreme Weather Characteristics Change in the Gangwon Province Using ETCCDI Indices (Expert Team on Climate Change Detection and Indices (ETCCDI)를 이용한 강원지역 극한기상특성의 변화 분석)

  • Kang, Keon Kuk;Lee, Dong Seop;Hwang, Seok Hwan;Kim, Byung Sik
    • Journal of Korea Water Resources Association
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    • v.47 no.12
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    • pp.1107-1119
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    • 2014
  • Interesting in abnormal climate is currently growing because of climate change. With this, an increasing number of people continue to show concern over the negative effects of such changes. In Korea, the annual average rainfall amount increased to about 19% from 1,155 mm in the 1910s to 1,375 mm in the 2000s. By the end of the 21st century, it has been projected that rainfall will further increase to about 17%. In particular, the 10-year frequency of localized heavy rain of more than 100-mm rainfall per day reached 385 days in the last 10 years. As such, it increased 1.7 times from 222 in the 1970s-80s. The extreme events caused by climate change is thus reported as having exacerbated over the years. Gangwon-province will suffer more from climate change than any other region in Korea because of its mostly mountainous terrain. It is a special region with both mountainous and oceanic climates divided alongside the eastern and western regions of the Taebaek Mountain Range. As such, this paper try to quantify using ETCCDI (Expert Team on Climate Change Detection and Indices) the recent climate changes in this region.

Development of Climate Change Adaptation Plan for Kurunegala City, Sri Lanka (스리랑카 Kurunegala시의 기후변화 적응 계획 개발)

  • Reyes, Nash Jett DG.;Cho, Hanna;Geronimo, Franz Kevin F.;Jeon, Minsu;Kim, Leehyung
    • Journal of Wetlands Research
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    • v.21 no.4
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    • pp.354-364
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    • 2019
  • Sri Lanka is an island nation susceptible to climate-related disasters and extreme weather events. Kurunegala City is the developing capital city of the North-Western Province of Sri Lanka. Changes in rainfall patterns and a steadily increasing annual average temperature amounting to 0.69±0.37℃ were observed in the city area. Generally, urban areas are at risk due to the lack of climate change adaptation provisions incorporated in the development plans. This study was conducted to investigate the characteristics of Krunegala City, Sri Lanka and develop an appropriate climate change adaptation plan for the city. Site investigation and qualitative risk assessment were conducted to devise a plan relevant to the climate change adaptation needs of the city. Qualitative risk analyses revealed that drinking water, water resources, and health and infrastructure risks were among the major concerns in Kurunegala City. Low impact development (LID) technologies were found to be applicable to induce non-point source pollutant reduction, relieve urban heat island phenomenon, and promote sound water circulation systems. These technologies can be effective means of alleviating water shortage and reducing urban temperature. The measures and strategies presented in this study can serve as reference for developing climate change adaptation plans in areas experiencing similar adverse effects of climate change.

Comparative Case Study on Urban Climate Change Plans (기후변화 대응계획 도시사례 비교연구: 창원시와 포틀랜드시를 대상으로)

  • Choi, Joon-Sung;Park, Cheon-Bo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.1
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    • pp.539-546
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    • 2014
  • The purpose of this paper is to suggest policy implications for the development of climate change plan in city scale. For a comparative case study, Changwon city in Korea and Portland city in U.S.A. were chosen. Climate change plans of both cities were analysed and compared in the perspectives of framework, climate strategies, and implementation. The findings from the comparative case study are suggested for policy implications as the followings. Firstly, the framework should be more simple and clearly integrated from goal to action plans. Secondly, more caution must be exercised for the major GHG triggers and adaptation policy measures. Finally, establishment of clear timeline is the first step of leadership in climate change plan. Coordination agencies and sustainable assessment systems for monitoring each policies are essential for the successful implementation of climate change plan.

Health Vulnerability Assessment for PM10 due to Climate Change in Incheon (인천지역 기후변화에 따른 미세먼지의 건강 취약성 평가)

  • Yoo, Heejong;Kim, Jongkon;Shin, Jaewon;Kim, Youngju;Min, Sungeun;Jegal, Daesung;Bang, Kiin;Lee, Sungmo
    • Journal of Environmental Health Sciences
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    • v.43 no.3
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    • pp.240-246
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    • 2017
  • Objectives: This study was conducted to evaluate the vulnerability of the human health sector to $PM_{10}$ due to climate change in Incheon over the period of 2005-2014. Methods: Vulnerability to $PM_{10}$ consists of the three categories of climate exposure, sensitivity, and adaptive capacity. The indexes for climate exposure and sensitivity indicate positive effects, while adaptive capacity shows a negative effect on vulnerability to $PM_{10}$. The variables in each category were standardized by the rescaling method, and respective relative regional vulnerability was analyzed through the vulnerability index calculation formula of the Intergovernmental Panel on Climate Change. Results: Regions with a high exposure index were the western and northern urban areas with industrial complexes adjacent to a highway, including Bupyong-gu and Seo-gu. Major factors determining the climate exposure index were the $PM_{10}$ concentration, days of $PM_{10}$ >= $100{\mu}g/m^3$, and $PM_{10}$ emissions. The regions showing a high sensitivity index were urban regions with high populations; these commonly had a high mortality rate for related diseases and vulnerable populations. Conclusions: This study is able to support regionally adjusted adaptation policies and the quantitative background of policy priority since it provides information on the regional health vulnerability to $PM_{10}$ due to climate change in Incheon.

Estimation of Future Land Cover Considering Shared Socioeconomic Pathways using Scenario Generators (Scenario Generator를 활용한 사회경제경로 시나리오 반영 미래 토지피복 추정)

  • Song, Cholho;Yoo, Somin;Kim, Moonil;Lim, Chul-Hee;Kim, Jiwon;Kim, Sea Jin;Kim, Gang Sun;Lee, Woo-Kyun
    • Journal of Climate Change Research
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    • v.9 no.3
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    • pp.223-234
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    • 2018
  • Estimation of future land cover based on climate change scenarios is an important factor in climate change impact assessment and adaptation policy. This study estimated future land cover considering Shared Socioeconomic Pathways (SSP) using Scenario Generators. Based on the storylines of SSP1-3, future population and estimated urban area were adopted for the transition matrix, which contains land cover change trends of each land cover class. In addition, limits of land cover change and proximity were applied as spatial data. According to the estimated land cover maps from SSP1-3 in 2030, 2050, and 2100, respectively, urban areas near a road were expanded, but agricultural areas and forests were gradually decreased. More drastic urban expansion was seen in SSP3 compared to SSP1 and SSP2. These trends are similar with previous research with regard to storyline, but the spatial results were different. Future land cover can be easily adjusted based on this approach, if econometric forecasts for each land cover class added. However, this requires determination of econometric forecasts for each land cover class.