• Environmental and Resource Economics Review
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• 제20권4호
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• pp.689-733
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• 2011

This study evaluates a novel scheme to trade sulfur dioxide emission permits subject to non-uniform rates. These rates are based on generators' marginal costs of compliance with environmental policy in a hypothesized least social-cost solution. This scheme is compared against the existing trading program used by the U.S. Environmental Protection Agency, featuring permits tradable one for one. Both policies are modeled to yield identical aggregate emissions. A numerical partial-equilibrium model of the U.S. energy industry is used to infer sulfur dioxide concentrations and health damages, as well as producer and consumer surplus, under the two policies. Regional pollution levels are found to vary across the two policies significantly. The system of exchange rates is estimated to outperform the uniform-trading scheme by $2.2 billion in industry profits and $2.1 billion in health damages, but to reduce consumer surplus by $6.7 billion. Paradoxically, exchange rates are thus estimated to lower total welfare by $2.5 billion. This is due to conceptual mechanism-design problems, as well as empirical issues.

• Atmosphere
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• 제12권4호
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• pp.56-68
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• 2002

In this study, an overview of the Earth Observing System (EOS) program is provided with discussions on its spacecrafts and instruments, and on the scientific issues. The EOS satellites aim at monitoring the Earth environmental system by observing parameters of subsystems such as atmosphere, ocean, land, and biosphere. The first EOS flagship, Terra, was launched on December 1999. Five instruments onboard Terra can measure cloud and aerosol properties, radiation, terrestrial surface, and ocean color. The second EOS flagship, Aqua, which was launched on May 2002, loads six instruments that measure clouds, radiation, precipitation, terrestrial surface, ocean color and sea surface temperature. The observational data available from the EOS satellites may complement data from the Communication-Oceanography-Meteorology satellite, which will be launched in 2008, for meteorological and environmental forecasts.

• Proceedings of the Korea Water Resources Association Conference
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• 한국수자원학회 2021년도 학술발표회
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• pp.42-42
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• 2021

한강 자연성 회복은 사회환경을 고려한 한강의 생태적 기능회복과 복원, 자연의 복원력을 기반으로 한 사람이 공생 공존하는 새로운 관계로의 전환점을 의미하고 있다. 본 연구에서는 한강 유역권 산·학·연 관계자 100명을 대상으로 설문조사를 실시하여 한강 자연성 회복 비전과 추진전략을 도출한 결과, '맑은 물이 흐르는 강'(1순위), '더불어 사는 강'(2순위), '생명이 숨쉬는 강'(3순위), '살아 움직이는 강'(4순위)으로 정책방향을 수립할 수 있었다. 또한 설문조사의 결과를 바탕으로 AHP 및 델파이 분석을 통해 한강 상류, 중류(서울권, 경기권), 하류별 자연성 회복 평가지표간 가중치를 산정하여 주요 추진과제를 선정하였다. 상류유역에서는 비점오염원 관리를 통한 환경오염 감소, 중류 유역에서는 도심하천의 수질관리강화 및 물 순환 체계 개선, 하류 유역에서는 생물다양성 확보 및 상·하류 지역 협력을 통한 상수원 수질 개선의 방안 필요의 결과가 도출되었다. 본 연구를 통하여 한강의 하천관리정책은 이수·치수 중심의 하천조성에서 하천생태복원 및 강과 사람과의 공존과 공생이 조화를 이룬 하천조성으로 관점이 변화되었음을 확인할 수 있었으며, 가중치 평가를 통한 최적 조합의 하천 관리방안이 도출되었다.

• Journal of Environmental Policy
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• 제8권1호
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• pp.1-30
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• 2009

Emission trading schemes, exemplified by the EU Emission Trading Scheme, have been playing active roles in mitigating greenhouse gas emissions since the Kyoto Protocol employed an emission trading as one of the cost-effective mechanisms. The objective of this study is to investigate potential integration of forestry offsets in designing an emission trading scheme in South Korea. First, the study found feasible scopes in which forestry sectors can take part by analyzing five emission trading schemes: EU Emission Trading Scheme, Chicago Climate Exchange, New South Wales Greenhouse Gas Abatement Scheme, New Zealand Emission Trading Scheme, and Regional Greenhouse Gas Initiative. The rationale of including forestry offsets in a domestic emission trading scheme was derived from the fact that forestry offset credits can provide cost-effective ways for market participants to commit their emission targets and expand abatement activities through reducing greenhouse gases in other geographical locations as well as other industrial sectors. Even though forestry offset credits have risks induced by their technical complexities in terms of accounting, additionality, and leakage, the integration of forestry offset credits into an emission trading scheme would be able to provide positive opportunities both to forestry sectors and other industrial sectors. In addition, there are technical questions which need to be answered in order to maintain these opportunities.

• Journal of the Korean Chemical Society
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• 제58권6호
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• pp.590-599
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• 2014

Environmental education, effectively performed at school, is very important to solve the environmental problems. Moreover the survey for teacher's perception is essential. The purpose of the study was to investigate the perception of environmental problems of middle school teachers in Pusan. The survey was done twice in 2007 and 2012, and based on the time intervals, careers, and major of the teachers. 200 teachers were chosen in 2007 and 300 teachers in 2012. How many environmental problems occurred during this time period affected the 471 teachers' perception was investigated and analyzed. The results are as follows. First, the perception difference of environmental problems was meaningful between two time intervals (p<.01). Especially, the perception of modern environmental problems and carbon emission showed considerable increase in both science and non-science major teachers. This may be caused by the climate change and the severity of lifestyles of indiscriminate consumerism. Second, the perception difference of environmental problems by careers was also meaningful (p<.01). Overall, the perception was obvious on the aspects of modern environmental problems, carbon emission, destruction of ozone layers, nuclear wastes, environmental hormones, and red tides. Teachers, having more careers irrespective of their teaching subjects, showed higher perception on the seriousness of environmental pollution, the necessity of environmental conservation, and the importance of health. Third, the perception of environmental problems between science and non-science major teachers was meaningful (p<.01). Particularly, the perception in the broad environmental problems was distinctive between them.

• Archives of design research
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• 제18권2호
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• pp.315-324
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• 2005

This research aims to investigate evaluation framework of environmental formative works that are regulated by law in urban space, and to suggest the directions of improving the framework for better city environments. The concept of environmental formative works in urban space was identified and social situations and factors including visitors and the cognitive process of urban environments, were analyzed. This research suggests a new method based on the analysis of existing regulations and problems of environmental art or formative works. The public regulations and evaluation methods of the Korean major cities including Seoul, Daejeon, Busan and Gwangju, were examined on environmental formative works. The objective was to suggest an evaluation framework for creating human values of urban culture environment instead of focusing on the matters between the owner of the architecture and the artist of formative works. By identifying socio-cultural value of art decoration related regulations and improving the level of the public formative art evaluation scheme, this study helps addressing the administrative problems and constructing a conceptual framework of evaluation to improve urban culture environment for both human and environment.

• Environmental and Resource Economics Review
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• 제12권3호
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• pp.397-425
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• 2003

This paper develops a simple theoretical model that is consistent with the empirical evidence of an inverted U-shpated relationship between pollution and per capita income, which is so-called environmental Kuznets curve in this literature. Also, by incorporating the issue of environmental externality into an endogenous growth model, I investigate the circumstances under which growth can be sustained with the optimal control of pollution, and hence the sustainable development can be achieved. In order to study the problem of implementing the social optimum in a market economy, I examine the optimality of three different kinds of environmental policy instruments; pollution tax, pollution-permit trading system (pollution voucher), and direct regulation. This paper shows that the optimum can be implemented with a pollution tax or with a voucher system. Also, it is shown that the socially optimal rate of pollution tax should increase proportionally to the growth rate of consumption.

• Korean Journal of Environment and Ecology
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• 제26권2호
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• pp.186-191
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• 2012

The Chinese Sparrowhawk($Accipiter$ $soloensis$) is the most common breeding raptor in Korea, but its spatial use in the breeding season has been poorly documented. Therefore, to estimate the territory and home range sizes of breeding sparrowhawks, six territorial males(four in 2005 and two in 2006) were observed from June to July in Gyeonggi Province, the Republic of Korea. Main perches, which were used repeatedly(more than three times) or where apparent territorial behaviors were observed, were identified and the locations were analyzed by GIS software. According to the 100% Minimum Convex Polygons which were identified from $25.2{\pm}5.3$ perches, Chinese Sparrowhawks occupied $4.62{\pm}0.90$ ha for breeding territories and used $22.57{\pm}5.12$ ha for their home ranges. These estimates showed larger spatially occupied areas than those in one previous report, but this study suggests that Chinese Sparrowhawks intensively use small areas throughout the breeding season. This result also implies that the sparrowhawks have the potential to be significantly affected by any habitat changes and resource exploitation in the small areas(particularly in small rice paddies of 0.6-2.0 ha) which they largely rely on for food. Although this study was based on observations solely for territory size estimations, this study may be worthwhile as preliminary pilot research for Chinese Sparrowhawk conservation, management, and further studies.

• Environmental and Resource Economics Review
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• 제31권2호
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• pp.261-290
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• 2022

Although market stabilization measures have been triggered in the K-ETS, carbon price is still under uncertainty. Considering Korea's 2030 enhanced reduction target announced in October 2021, it is crucial to have practical stabilization measures to appropriately deal with price uncertainty. This study examines the quantitative effects of a price collar, which is considered as a means of alleviating price uncertainty, on expected cumulative emissions and abatement costs. There are three main scenarios: carbon tax, emissions trading system, and emissions trading system with a price collar. Monte Carlo simulation was conducted to reflect uncertainty in emission. There are several results as follows: 1) In a price collar, domestic emission target is likely to be achieved with a lower expected abatement cost than other scenarios. In addition, there is a small amount of excess emissions in this research and it would be not critical(0.1% excess than target); 2) Prohibiting banking increases the expected abatement cost. This is because firms can not intertemporally reallocate allowances to match the firm's optimal emissions path; 3) With the adoption of a price collar, government's net revenue can be positive even if the government's purchase volume of emissions allowances is more than sales volume. This is because the government sells them at price ceiling and purchases them at price floor.

• Journal of the Korean Society of Propulsion Engineers
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• 제10권2호
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• pp.31-38
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• 2006

A study of thermal characteristics of the airship considering radiation heat transfer has been conducted by building a numerical model for the airship in order to identify the possibility to obtain the reliable flight performance in severe stratospheric heat conditions. The variations of distributed temperature of the skin and the inner flow by free convection have been calculated according to the change of the solar position. As the results of the analyses, the stratospheric heat conditions slightly have an influence on the flight performance of the airship.