• Title/Summary/Keyword: climate system

Search Result 2,606, Processing Time 0.028 seconds

Climate changes impact on water resourcesinYellowRiverBasin,China

  • Zhu, Yongnan;Lin, Zhaohui;Wang, Jianhua;Zhao, Yong
    • Proceedings of the Korea Water Resources Association Conference
    • /
    • 2016.05a
    • /
    • pp.203-203
    • /
    • 2016
  • The linkage between climate change and water security, i.e., the response of water resource to the future climate change, have been of great concern to both scientific community and policy makers. In this study, the impact of future climate on water resources in Yellow River Basin in North of China has been investigated using the Coupled Land surface and Hydrology Model System (CLHMS) and IPCC AR5 projected future climate change in the basin. Firstly, the performances of 14 IPCC AR5 models in reproducing the observed precipitation and temperature in China, especially in North of China, have been evaluated, and it's suggested most climate models do show systematic bias compared with the observation, however, CNRM-CM5、HadCM5 and IPSL-CM5 model are generally the best models among those 14 models. Taking the daily projection results from the CNRM-CM5, along with the bias-correction technique, the response of water resources in Yellow river basin to the future climate change in different emission scenarios have been investigated. All the simulation results indicate a reduction in water resources. The current situation of water shortage since 1980s will keep continue, the water resources reduction varies between 28 and 23% for RCP 2.6 and 4.5 scenarios. RCP 8.5 scenario simulation shows a decrease of water resources in the early and mid 21th century, but after 2080, with the increase of rainfall, the extreme flood events tends to increase.

  • PDF

Effects of Clime Change on Spatio-Temporal Behavior of Drought Using SAD Analysis (SAD 해석을 이용한 기후변화가 가뭄의 시공간적 거동에 미치는 영향분석)

  • Choi, Chi-Hyun;Choi, Dae-Gyu;Kim, Eung-Seock;Kim, Sang-Dan
    • Journal of the Korean Society of Hazard Mitigation
    • /
    • v.10 no.6
    • /
    • pp.89-97
    • /
    • 2010
  • In this study, the impact of climate change on the spatio-temporal behavior of extreme drought events is investigated by comparing drought severity-area-duration curves under present and future climate conditions. In our climate-change impact experiments, the future climate is based on two GCMs(CGCM3.1-T63 and CSIRO-MK3.0). As a result, in the case of CGCM3.1-T63 future drought events are similar to the present, but in the case of CSIRO-MK3.0 future drought risk is likely to increase. Such results indicate that a climate change vulnerability assessment for present water resources supply system is urgent.

Measurement of Time-Varying Failure Rate for Power Distribution System Equipment Considering Weather Factor (기후인자를 고려한 배전계통 설비의 시변 고장률 추정)

  • Kim, Jae-Chul
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
    • /
    • v.23 no.8
    • /
    • pp.14-20
    • /
    • 2009
  • In this paper, the time-varying failure rate to consider climate effect was extracted. Even if the same kind of equipments is estimated for extracting the time-varying failure rate, the failure rates could be different depending on external effect such as climate. With the consequence, the failure rate extracted to consider the climate effect is necessary for using the failure rate on the optimal investment plan or asset management, To consider the characteristic of climate effects(Classified into 5 categories, heavy rain, thunderbolt, strong wind, tidal waves, no character), the survey of officers charging the operation of equipment in KEPCO branch office was done. With this consequence, this paper suggest the failure rate extraction method to consider the climate effect analyzed by the survey.

The Relationship between Workers' Safety Behaviors and Safety Climate in Chemical Industry (화학산업 작업자의 안전행동과 안전분위기의 상관관계)

  • Baek, Jong-bae;Uhm, Minyong;Kim, Ji-sun
    • Journal of the Korean Society of Safety
    • /
    • v.30 no.5
    • /
    • pp.100-107
    • /
    • 2015
  • Korea government has established and enforced countermeasures about the various policy of industrial accident prevention. Recent chemical accidents included hazardous materials. Exposure to these chemicals can cause serious environmental poisoning and various health problems. The key factor causing these major accidents may be associated with the mistake in workers' safety behaviors. Some researchers noted workers' safety behaviors may be related to workers' safety climate. In this research, a survey was conducted to explore workers' safety behaviors and safety climate in a large petrochemical company in Korea. The company processes major petrochemical materials and any spills can be hazardous and cause chemical disasters. In this study, we explored one petrochemical company to investigate three hypotheses. 593 workers were surveyed for this study. We checked association between workers' safety behavior and safety climate. The survey result shows the people who have safety climate do safe behavior.

Effect of Behavior Based Safety Program on Safety Behavior, Safety Climate and its Satisfaction (행동기반안전관리 프로그램이 안전행동, 안전 분위기 및 만족도에 미치는 영향)

  • Yang, Jeong Mo;Kwon, Young Guk
    • Journal of the Korean Society of Safety
    • /
    • v.33 no.5
    • /
    • pp.109-119
    • /
    • 2018
  • This study has performed to identify the effect of safety behavior, safety climate and its satisfaction through the Behavior Based Safety Program for 5 sites of the same Company. The study result indicated that the level of recognized safety behavior, climate and its satisfaction improved by conducting observation of worker behavior, jobsite feedback, displaying feedback chart, safety training, behavior modification committee. Additionally, the participation level of safety activity and conformity level of safety rule improved. The recognized level of safety climate improved together with recognized safety value by management, safety participation of direct boss, communication with each other to be dealt with safety matter, safety training material to be contained unsafe behavior and practical hazard, understanding and conducting safety standard. In addition, The recognized level of satisfaction improved together with safety behavior and climate. As a result, this program provided an opportunities to correct worker's unsafe behavior to safe behavior in conjunction with increasing number of observation, providing additional time to have a safety check, safety suggestion to improve work situation and a permit to work rule. It will be integrated into health and safety management system to be able to reduce industrial accident.

A study on the Effect of the Organizational Climate on the Job Satisfaction and Job Performance (기업의 조직분위기가 직무만족과 직무성과에 미치는 영향에 관한 연구)

  • Lee, Sun-Kyu;Kim, Young-Hyung;Lee, Ung-Hee
    • Journal of Korean Society of Industrial and Systems Engineering
    • /
    • v.32 no.3
    • /
    • pp.20-28
    • /
    • 2009
  • Member's perception toward organizational climate is an concept but generally it has been used in the meaning of Organizational climate by members, in an attempt to give an idea of what kind of meaning an organization can have from a psychological point of view to its members. This thesis insists Individual attitudes in the organization be changed characteristics of organization and individual who percepts the organization, one the basis of Organization climate effects individual attitudes directly and indirectly, and objective of the study is to verify the dependence of cause and effect between organization climate and job satisfaction and performance with manufacturing firms within Gumi National Industrial Complex. As a result, to promote the effectiveness and efficiency of the enterprise, firstly, we have to set an appropriate objectives within the organization, Secondly, the manager should recognize the controversial issue be solved in public. Lastly, the members should be inspired loyalty into their organization.

A Study on the Evaluation Method for the Degree of Integration towards Office Towers in Different Climate Zones

  • Han, Seung-Hoon;Moon, Jin Woo;Kim, Kyoung-Hee
    • Architectural research
    • /
    • v.14 no.4
    • /
    • pp.117-124
    • /
    • 2012
  • High rise office buildings represent one of the most energy-intensive architectural typologies. The growth of urban population necessitates sustainable high rise towers that lessen environmental impacts and energy consumption. Among various sustainable strategies, the integrated design is long known to be an important process that has great impact on building's sustainability. The framework for this paper is based on the case study of integrated towers that are located in different climate zones. The paper specifically addresses to what extent climate conditions influence the design of a high rise building and what kinds of the climate integrated design has been implemented. Qualitative case studies were carried out using published data and architectural drawing set. The technical work presented in the paper is based on computer simulation that examines the insolation analysis using hourly recorded weather data. The analysis results revealed that the site and building envelope integration and the site and building service systems have shown the most frequently employed in the integrated towers through the implementation of renewable resource integration, high performance envelopes and sustainable building service systems. Internal comfort and further energy saving in the integrated towers are offered through an automatic building management system. Due to the dynamic climate conditions, integration of building systems requires a sophisticated approach to building sustainability.

Consequences and Remediation of Climate change with Focus on Clean Water and Sanitation in India

  • Khan, Mohammad Danish;Lee, Seungmin;Ahn, Ji Whan
    • Journal of Energy Engineering
    • /
    • v.27 no.1
    • /
    • pp.65-75
    • /
    • 2018
  • The emission of greenhouse gases mainly carbon dioxide and methane is the result of rapid industrialization to meet the demands of ever-growing population. This has resulted in an increase of global temperature which in turn is responsible for severe environmental, social, ecological and economic losses, commonly known as to as 'climate change'. This study attempts to highlight the impacts of climate change mainly focussing on water contamination, sanitation and open defecation in India. The requirement for the instantaneous employment of environment friendly technologies along with improved sanitary system has been discussed. Various other issues which are also linked to climate change that need further management like managing water resources, deterioration in human health, economic losses, modification and successful implementation of policies have been pointed out. Furthermore, stress has been made for the urgent adaptation and rethinking for making strategies along with the involvement of women in order to cop up challenges offered by climate change.

Assessment of Anti-Drought Capacity for Agricultural Reservoirs using RCP Scenarios (RCP 시나리오 기반 농업용 저수지의 내한능력 평가)

  • Park, Na-Young;Choi, Jin-Yong;Yoo, Seung-Hwan;Lee, Sang-Hyun
    • Journal of The Korean Society of Agricultural Engineers
    • /
    • v.55 no.3
    • /
    • pp.13-24
    • /
    • 2013
  • Agriculture is affected directly by climate conditions and changes, and it is necessary to understand the impact of climate change on agricultural reservoirs which are the main water resources for paddy fields in Korea. This study aimed to evaluate the impact of climate change on the anti-drought capacity including water supply capability (WSC) and drought response ability (DRA) of agricultural reservoirs based on RCP (Representative Concentration Pathway) 4.5 and 8.5 scenarios of CanESM2 (The Second Generation Earth System Model) provided by CCCma (Canadian Center for Climate Modeling and Analysis). The WSC and DRA were estimated using frequency analysis and runs theory. The six reservoirs (Yooshin, Nogok, Kumsung, Songgok, Gapyung, Seoma) were selected considering geographical characteristics and design criteria of reservoir capacity. In case of Seoma reservoir, more than 10 year drought return period (DRP), the variation of the WSC was estimated larger than the others. In case of Yooshin reservior (2~5 DRP) DRC was decreased in 2025s under RCP8.5. These results could be utilized for agricultural reservoirs management and future design criteria considering climate change impacts on paddy irrigation.

Towards Sustainability of Tropical Forests: Implications for Enhanced Carbon Stock and Climate Change Mitigation

  • Rahman, Mizanur;Islam, Mahmuda;Islam, Rofiqul;Sobuj, Norul Alam
    • Journal of Forest and Environmental Science
    • /
    • v.33 no.4
    • /
    • pp.281-294
    • /
    • 2017
  • Tropical forests constitute almost half of the global forest cover, account for 35% of the global net primary productivity and thereby have potential to contribute substantially to sequester atmospheric $CO_2$ and offset climate change impact. However, deforestation and degradation lead by unsustainable management of tropical forests contribute to the unprecedented species losses and limit ecosystem services including carbon sequestration. Sustainable forest management (SFM) in the tropics may tackle and rectify such deleterious impacts of anthropogenic disturbances and climatic changes. However, the existing dilemma on the definition of SFM and lack of understanding of how tropical forest sustainability can be achieved lead to increasing debate on whether climate change mitigation initiatives would be successful. We reviewed the available literature with a view to clarify the concept of sustainability and provide with a framework towards the sustainability of tropical forests for enhanced carbon stock and climate change mitigation. We argue that along with securing forest tenure and thereby reducing deforestation, application of reduced impact logging (RIL) and appropriate silvicultural system can enhance tropical forest carbon stock and help mitigate climate change.