• Title/Summary/Keyword: Climate Analysis

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Correlation analysis between climate indices and Korean precipitation and temperature using empirical mode decomposition : II. Correlation analysis (경험적 모드분해법을 이용한 기상인자와 우리나라 강수 및 기온의 상관관계 분석 : II. 상관관계 분석)

  • Ahn, Si-Kweon;Choi, Wonyoung;Shin, Hongjoon;Heo, Jun-Haeng
    • Journal of Korea Water Resources Association
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    • v.49 no.3
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    • pp.207-215
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    • 2016
  • In this study, it is analyzed how large scale climate variation has an effect on climate systems over Korea using correlation analysis between climate indices and Intrinsic Mode Functions (IMFs) of precipitation and temperature. For this purpose, the estimated IMFs of precipitation and temperature from the accompanying paper were used. Furthermore, cross correlation coefficients and lag time between climate indices and IMFs were calculated considering periodicities and tendencies. As results, more accurate correlation coefficients were obtained compared with those between climate indices and raw precipitation and temperature data. We found that the Korean climate is closely related with climate variations of $El-Ni{\tilde{n}}o$ in terms of periodicity and its tendency is followed with increasing sea surface temperature due to climate change.

Analysis of Seasonal Characteristics about Long-Range Transport and Deposition of Sulfur (황(S)의 장거리 이동 및 침적량에 대한 계절별 특성 분석)

  • Hong, Sung-Chul;Lee, Jae-Bum;Moon, Kyung-Jung;Song, Chang-Keun;Bang, Cheol-Han;Choi, Jin-Young;Kim, Jeong-Soo;Hong, You-Deog
    • Journal of Korean Society for Atmospheric Environment
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    • v.26 no.1
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    • pp.34-47
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    • 2010
  • Long-range transport of air pollutants was simulated using Comprehensive Acid Deposition Model (CADM) and Yonsei University-Sulfuric Acid Deposition Model (YU-SADM). For the simulation, weather patterns that represent the four seasons were derived through a clustering analysis with 5-years of meteorological data. The simulation result showed that in spring, influenced by strong low pressure from China, air pollutants of moved to the Korean Peninsula. In summer, humid air moved into the Korean Peninsula across the Yellow Sea while the north pacific high pressure extended, making the concentration of air pollutants lower than that in the other seasons. In autumn, air pollutants were transported by the northwest wind caused by the movement of high pressure over the Yellow Sea, while in winter air pollutants were influenced by northwest winds from continental highs. The amount of air pollutants in each season showed that high amount of pollutants were transported in winter due to the strong northwest wind. The in-flows were 3 to 8 times higher than those of the other seasons, and out-flows were about as twice as high. The amount of wet deposition in summer and autumn increased significantly compared to the amount in the other seasons due to the increase of rainfall. Source-receptor relationship analysis for sulfur showed that 70 to 91 precent of the total deposition came from the self-contribution by the Korean Peninsula. In winter, contribution from China was about 25 percent of the total deposition which was higher amount than any other season.

Implementation of ESGF Data Node for International Distribution of CORDEX-East Asia Regional Climate Data

  • Han, Jeongmin;Choi, Jaewon
    • International Journal of Contents
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    • v.17 no.1
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    • pp.61-70
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    • 2021
  • As the resolution of climate change scenario data applied with regional models increased, Earth System Grid Federation (ESGF) was established around major climate-related organizations to jointly operated and manage large-scale climate data. ESGF developed standard software to provide model output, observation data management, dissemination, and analysis using Peer to Peer (P2P) computing technology. Roles of each institution were divided into index and data nodes. Therefore, ESGF data node was established at APEC Climate Center in Korea on behalf of Asia to share data on climate change scenarios of CORDEX-East Asia (CORDEX-EA) to study climate changes in Eastern Asia. Climate researchers are expected to play a large role in researching causes of global warming and responding to climate change by providing CORDEX-EA regional model data to the world through ESGF data node.

Analyzing Climate Zones Using Hydro-Meteorological Observation Data in Andong Dam Watershed, South Korea (수문기상 관측정보를 활용한 안동댐 유역 기후권역 구분 및 분석)

  • Kim, Sea Jin;Lim, Chul-Hee;Lim, Yoon-Jin;Moon, Jooyeon;Song, Cholho;Lee, Woo-Kyun
    • Journal of Climate Change Research
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    • v.7 no.3
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    • pp.269-282
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    • 2016
  • Watershed area can be submerged due to constructions and management of dams, and these change can impact not only on ecosystem and environment of river basin area but also on local climate. This study is conducted to construct and classify climate zones of Andong Dam watershed where the area is submerged due to the construction of the dam. By applying Principal Components Analysis (PCA) and Getis-Ord $Gi^*$ statistics, three climate zones were classified for the result. Each zone was then analyzed and validated with climatic and geological features including topography, land cover, and forest type map. As a result of the analysis, there was a difference in temperature, elevation, precipitation and tree species distribution among the zones. Also, an analysis of land cover map showed that there were more agricultural land near Andong Reservoir. This study on the climatic classification is considered to be useful as the basis for decision-making or policy enforcement regarding ecosystem, environmental management or climate change response.

Comparative Analysis of Climate Change Adaptation-related Recognition between Public Officials and Citizens - Focused on ChungCheongBukDo-Province - (기후변화 적응에 대한 공무원 및 도민의 인식 비교 분석 - 충청북도를 중심으로 -)

  • Ban, Yong Un;Go, In Chul;Baek, Jong In
    • Journal of the Korean Regional Science Association
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    • v.33 no.4
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    • pp.19-28
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    • 2017
  • This study has intended to perform comparative analysis of climate change adaptation-related recognition between public officials and citizens in ChungCheongBukDo-Province, Korea. To reach this goal, we identified difference between the two groups by prioritizing target group's adaptation policies for climate change, and analyzing climate change adaptation-related recognition in each sector. Climate change adaptation policies can have great policy utility when the boundaries between policy makers and detainees are blurred. Therefore, this study has suggested some measures to reduce the recognition gaps between the target groups by analyzing the characteristics of the groups.

An Analysis of Impacts of Climate Change on Rice Damage Occurrence by Insect Pests and Disease (기후변화가 벼 병해충 피해면적 발생에 미치는 영향분석)

  • Jeong, Hak-Kyun;Kim, Chang-Gil;Moon, Dong-Hyun
    • Korean Journal of Environmental Agriculture
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    • v.33 no.1
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    • pp.52-56
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    • 2014
  • BACKGROUND: It is known that impacts of climate change on damage occurrence by insect pests and diseases are increasing. The negative effects of climate change on production will threaten our food security. It is needed that on the basis of analysis of the impacts, proper strategies in response to climate change are developed. METHODS AND RESULTS: The objective of this paper is to estimate impacts of climate change on rice damage occurrence by insect pests and diseases, using the panal model which analyzes both cross-section data and time series data. The result of an analysis on impacts of climate change on rice damage occurrence by pest insect and disease showed that the damage occurrence by Rice leaf roller and Rice water weevil increased if temperature increased, and damage occurrence by Stripe, Sheath blight, and Leaf Blast increased if precipitation(or amount of sunshine) increased(or decreased). CONCLUSION: Adaptation strategies, supplying weather forecasting information by region, developing systematical strategies for prevention of damage occurrence by pest insect and disease, analyzing the factors of damage occurrence by unexpected pest insect and disease, enforcing international cooperation for prevention of damage occurrence are needed to minimize the impacts of damage occurrence on rice production.

Future Projection and Uncertainty Analysis of Low Flow on Climate Change in Dam Basins (기후변화에 따른 저유량 전망 및 불확실성 분석)

  • Lee, Moon Hwan;Bae, Deg Hyo
    • Journal of Climate Change Research
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    • v.7 no.4
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    • pp.407-419
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    • 2016
  • The low flow is the necessary and important index to establish national water planning, however there are lots of uncertainty in the low flow estimation. Therefore, the objectives of this study are to assess the climate change uncertainty and the effects of hydrological models on low flow estimation. The 5 RCMs (HadGEM3-RA, RegCM4, MM5, WRF, and RSM), 5 statistical post-processing methods and 2 hydrological models were applied for evaluation. The study area were selected as Chungju dam and Soyang river dam basin, and the 30 days minimum flow is used for the low flow evaluation. The results of the uncertainty analysis showed that the hydrological model was the largest source of uncertainty about 41.5% in the low flow projection. The uncertainty of hydrological model is higher than the other steps (RCM, statistical post-processing). Also, VIC model is more sensitive for climate change compared to SWAT model. Therefore, the hydrological model should be thoroughly reviewed for the climate change impact assessment on low flow.

A Study on the Curriculum Development for Climate Change and Cultural Heritage (기후변화대응을 위한 문화유산 교육과정 개발 방안 연구)

  • Lho, Kyung-Min
    • Journal of architectural history
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    • v.32 no.3
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    • pp.39-51
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    • 2023
  • This study aims to develop a cultural heritage curriculum for climate change and present educational directions for cultural heritage and climate change impact in the future. In this study, the role and necessity of cultural heritage education for climate change were first discussed based on previous studies on climate change and cultural heritage. Next, the current status analysis of educational cases related to climate change and cultural heritage was conducted based on educational manuals, curriculum, and heritage competency systems associated with climate change. Finally, we propose a plan to develop a curriculum to cope with climate change and cultural heritage for graduate students in higher education institutions based on the four components of developing a curriculum. In future studies, we intend to propose guidelines for designing educational manuals and specific curricula for each educational target to cope with the climate change of cultural heritage presented in this study.

Economic Analysis of Climate Change to Establish Effective Adaptation Policies (효율적 기후변화 적응대책 수립을 위한 기후변화의 경제학적 분석)

  • Chae, Yeo-Ra;Youm, Yoo-Na
    • Journal of Korean Society of Environmental Engineers
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    • v.32 no.9
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    • pp.818-829
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    • 2010
  • This paper provides an extensive overview of the literature on economic analysis of climate change, and thereby provides direction for effective adaptation policies for Korea. The paper first gives a comprehensive look on the estimation of economic costs of climate change as given by various research. Following, the paper examines the choice of measures that are used in the economic analysis of climate change by different sectors, including agriculture and human health. The paper also compares and discusses the various analytic results with a focus on Korea in order to shed light on where Korea stands. Finally, the paper examines current literature on adaptation polices in response to climate change, and by examining how such research has evolved and deepened with time, provide directions for the research on adaptation policies for Korea.

Effects on Vegetation Distribution of Odaesan National Park according to Climate and Topography of Baekdudaegan, Korea

  • Han, Bong-Ho;Choi, Jin-Woo;Yeum, Jung-Hun
    • Journal of Environmental Science International
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    • v.26 no.10
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    • pp.1111-1124
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    • 2017
  • This study aimed to understand the distribution of vegetation in the eastern and western sides of the Baekdudaegan (ridge) dividing the Odaesan National Park, as influenced by its topography and climate. The actual vegetation, topography and climate for each side were used in the overlay analysis. The results of the analysis of actual vegetation showed a high distribution rate of Quercus mongolica forest on both the eastern and western sides. On the eastern side, the distribution rate of Pinus densiflora forest and P. densiflora-Q. variabilis forest was high, while the western side had a high distribution rate of deciduous broad-leaved tree forest and Abies hollophylla forest. A clear trend was identified for vegetation distribution with respect to elevation but not with respect to slope or aspect. The results of micro-landform analysis showed that the P. densiflora forests in the ridge and slope and the deciduous broad-leaved tree forest in the valley were respectively distributed with a high ratio. In terms of climate, the eastern side revealed an oceanic climate, with a relatively high average annual temperature, while the western side was characterized by relatively high average annual humidity and average annual precipitation. The distribution rate of P. densiflora forest was found to be high on the eastern side of the mountain range.