• Title/Summary/Keyword: greenhouse gas emission factor

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Methodology of CO2 Emission Factor Verification and Quantitative Assessment in Ethylene Product Processes (에틸렌 생산에서의 CO2 국가배출계수 검증 및 정량평가 방법론)

  • Youk, Soo Kyung;Jeon, Eui-Chan;Yoo, Kyung Seun
    • Journal of Climate Change Research
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    • v.9 no.1
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    • pp.69-74
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    • 2018
  • The purpose of this study is to suggest the methodology of $CO_2$ Emission Factor Verification and Quantitative Assessment in Ethylene Product Processes. At first, this study compare the IPCC (Intergovernmental Panel on Climate Change) 1996 Guideline and 2006 Guideline. And analyse methodology for estimating $CO_2$ emission and $CO_2$ emission factor in Ethylene product process. Also analyse cases of estimating $CO_2$ emission factor based on material balance. Methodology of $CO_2$ Emission Factor Verification and Quantitative Assessment are following the categories proposed by GIR (Greenhouse Gas Inventory and Research Center). There are total 12 factors in 8 categories and give 5 or 10 points according to their importance. Also this study suggests necessary data of document to meet the conditions. The result would help estimate accuracy Greenhouse Gas Inventory. Also contribute to establish policy on environmental assessment, air conservation, etc.

Greenhouse Gas Emission Patterns at Intersections by Drivers (교차로에서 운전자별 온실가스 발생 경향)

  • Lee, Yoon-Seok;Yoo, Hye-Min;Oh, Heung-Un
    • International Journal of Highway Engineering
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    • v.15 no.4
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    • pp.147-154
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    • 2013
  • PURPOSES: To analyze the specific factors of drivers behaviors that amount of cause the greenhouse gas emissions per vehicle. METHODS: Drivers behaviors at intersections are analyzed on the conditions of acceleration and deceleration. RESULTS : First, it is resulted greenhouse gas emissions per vehicle is produced more at intersections than at the main lines of highway. Second, it is resulted that the average speed, the average acceleration rate and the maximum speed are three major factors to produce greenhouse gas per vehicle in acceleration sections. Third, it is resulted that rapid deceleration 20m before entering intersections is the major factor to produce greenhouse gas per vehicle in deceleration sections. CONCLUSIONS: At intersections, sudden acceleration and deceleration is not good for greenhouse gas emissions. Thus, and the average speed, the average acceleration rate and the maximum speed are the chosen as factors to be controlled for drivers' behavior to reduce vehicles' greenhouse gas at intersections.

Estimation of Greenhouse Gas Reduction Potential by Treatment Methods of Excavated Wastes from a Closed Landfill Site (사용종료매립지(使用終了埋立地) 폐기물(廢棄物)의 처리방법별(處理方法別) 온실(溫室)가스 저감량(低減量) 평가(評價))

  • Lee, Byung-Sun;Han, Sang-Kuk;Kang, Jeong-Hee;Lee, Nam-Hoon
    • Resources Recycling
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    • v.22 no.6
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    • pp.3-11
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    • 2013
  • This study was carried out to estimate greenhouse gas reduction potentials under treatment methods of combustible wastes excavated from closed landfill. The treatment methods of solid wastes were landfilling, incineration, and production of solid recovery fuel. The greenhouse gas reduction potentials were calculated using the default emission factor presented by IPCC G/L method of IPCC (Intergovernmental Panel on Climate Change). The composition of excavated waste represented that screened soil was the highest (65.96%), followed by vinyl/plastic (19.18%). This means its own component is similar to the other excavated waste from unsanitary landfill sites. Additionally, its bulk density was 0.74 $t/m^3$. In case of landfilling of excavated waste, greenhouse gas emission quantity was 60,542 $tCO_2$. In case of incineration of excavated waste, greenhouse gas emission quantity was 9,933 $tCO_2$. However, solid recovery fuel from excavated waste reduced 33,738 $tCO_2$ of the greenhouse gas emission quantity. Therefore, solid recovery fuel production is helpful to reduce of greenhouse gas emission.

Development of Classification Method for Anthracite and CO2 Emission Factor to Improve the Quality of National GHG Inventory (국가 온실가스 인벤토리 품질 향상을 위한 무연탄 분류 방법 및 배출계수 개발)

  • Kim, Seungjin;Lee, Jeongwoo;Lee, Seehyung;Sa, Jae-Hwan;Choi, Bong-Suk;Jeon, Eui-Chan
    • Journal of Climate Change Research
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    • v.4 no.1
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    • pp.27-39
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    • 2013
  • In this study, the anthracite coal being used as fuel in Korea were classified into different types. These types include the domestically produced anthracite, imported anthracite used as raw material, and imported anthracite used as fuel. Each of the calorific values and greenhouse gas emission factors were calculated. The calculation of greenhouse gas emission factors resulted in the domestically produced anthracite as $111,477{\pm}4,508kg\;CO_2/TJ$, the imported anthracite used as raw material as $108,358{\pm}4,033kg\;CO_2/TJ$, and anthracite used as fuel was displayed as $103,927{\pm}8,367kg\;CO_2/TJ$. Additionally, the amount of greenhouse gas emission based on these calculated emission factors was displayed as $6,216,942ton\;CO_2$, which resulted as 12.7% lower than the green house gas emission amount which was calculated without distinguishing anthracite coal in details. Therefore, collecting activity data through a detailed classification of anthracites facilitate a more accurate calculation of greenhouse gas emission amount compared to collecting activity data through combination. Furthermore, since the anthracite coal used domestically possesses characteristics differing from the anthracite coal proposed by the IPCC, anthracite coal should be classified for each purpose and calculated for the improvement of the national greenhouse gas inventory.

Estimation of greenhouse gas emissions from the landfill sector with the application of the 2006 IPCC guidelines and the change factors analysis (2006 IPCC 가이드라인 적용에 따른 폐기물 매립 부문의 온실가스 배출량 산정 및 변화 요인 분석)

  • Kim, Ran-Hui;Park, Jin-Kyu;Song, Sang-Hoon;Park, Ok-Yun;Lee, Nam-Hoon
    • Journal of the Korea Organic Resources Recycling Association
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    • v.28 no.1
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    • pp.37-51
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    • 2020
  • Following the Paris Agreement adopted at the end of 2015, global stock-taking has been planned to be carried out on a 5-year basis from 2023, and it is mandatory to report on national GHG inventory and progress toward achieving greenhouse gas reduction targets. To prepare for this, it is important to improve the reliability of estimation of the greenhouse gas emission, identify the characteristics of each greenhouse gas emission source, and manage the amount of emissions. As such, this study compared and analyzed the amount of emissions from the landfill sector using the 2000 GPG, the 2006 IPCC Guidelines, and the 2019 Refinement estimation method. As a result, in comparison to 2016, there were 2,287 Gg CO2_eq. in scenario 1, 1,870 Gg CO2_eq. in scenario 2-1, 10,886 Gg CO2_eq. in scenario 2-2, 10,629 Gg CO2_eq. in scenario 2-3, and 12,468 Gg CO2_eq. in scenario 3. Thus, when the 2006 IPCC Guidelines were applied with respect to 2000 GPG, it was revealed that greenhouse gas emissions have increased. Such difference in the emission changes was due to the changes in the calculation method and the emission factor values applied. Therefore, it is urgent to develop national-specific values of the emission factor based on characteristics of greenhouse gas emission in Korea.

A Comparative Study for Estimation of Greenhouse Gas for Local Government`s Sustainable Transport (지속가능교통 평가를 위한 온실가스 배출량 산정 방법론의 지자체 적용 및 비교 연구)

  • Yu, Byeong-Yong;Bae, Sang-Hun;Han, Sang-Yong;Kim, Geon-Yeong
    • Journal of Korean Society of Transportation
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    • v.29 no.5
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    • pp.55-65
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    • 2011
  • In effort to estimate sustainability of the transportation sector, this study conducts a comparative analysis of methodology suggested for measuring greenhouse gas emission. There are two approaches proposed by the UN IPCC: 1) top-down approach (TDA) based on the amount oil sales, and 2) bottom-up approach (BUA) utilizing the velocity of moving source and traffic volume data. The subject areas for analysis were selected based on research results by the Korea Transportation Institute that evaluate traffic sustainability of each local government. Gwacheon-si being one of the top ranked areas in sustainability, and Anseong-si being ranked at the 7th level were analyzed. By the tier 1 methodology, Gwacheon-si and Anseong-si are estimated to create 74,813ton/yr, and 584,125ton/yr of the greenhouse gas emission, respectively. The tier 3 methodology, however, estimates Gwacheon-si and Anseong-si to create 91,462ton/yr, and 163,801ton/yr of the emission, respectively. Comparison of the two estimated emissions shows considerable differences; i.e., the tier 3 method over estimates Gwacheon-si's emission by 22.3% whereas it underestimates Anseong-si's greenhouse gas emission by the factor of about 3.5 compared to the emissions obtained from the tier 1 method. The result from this study implies that the traffic-sustainability-index based grade of each local government can be evaluated differently by the method adopted for measuring greenhouse gas emission.

Study on the Characteristics of Carbon Dioxide Emissions Factors from Passenger Cars (승용차의 $CO_2$ 배출가스 영향인자 특성에 관한 연구)

  • Yoo, Jeong-Ho;Kim, Dae-Wook;Yoo, Young-Sook;Eum, Myung-Do;Kim, Jong-Choon;Lee, Sung-Wook;Baik, Doo-Sung
    • Transactions of the Korean Society of Automotive Engineers
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    • v.17 no.4
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    • pp.10-15
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    • 2009
  • Emission regulations on greenhouse gas(GHG) in automobiles have been stringent because of global warming effect. Over 90% of total GHG emission are carbon dioxides and about 20% of this $CO_2$ emission are emitted from automobiles. In this study, 110 vehicles were tested on a chassis dynamometer and $CO_2$ emissions and fuel economy were measured in order to investigate the characteristics of $CO_2$ emission factor from passenger vehicles which are the most dominant vehicle type in Korea. The characteristics of emissions in accordance with displacements, gross vehicle weight, NIER and CVS-75 speed mode were discussed. It was found that vehicles having larger displacement, heavier gross vehicle weight, automatic transmission and specially at cold start emitted more $CO_2$ emissions. From these results, correlation between $CO_2$ emission and fuel economy was also obtained. This study may contribute to evaluate domestic greenhouse gas emissions and establish national policies on climate changes in future.

Determination of Weighted Value to Estimate Each Emission Factor of Landfill (폐기물 매립부문 배출계수 평가항목의 가중치 결정)

  • Lee, Seung Hoon;Kim, Jae Young;Yi, Seung Muk;Choi, Eun Hwa;Kim, Young Soo
    • Journal of Climate Change Research
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    • v.5 no.3
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    • pp.199-208
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    • 2014
  • According to "IPCC guide line for national greenhouse gas inventories" each country should develop the 'Country-specific emission factor' and apply it to estimate greenhouse gases emissions from landfill. It could reflect properties of country and make estimation more accurate. For that accuracy, developed country-specific emission factor should be assessed and be verified consistently. Developed emission factors should be assessed in terms of Representative, Emission Property, Accuracy and Uncertainty, but there is no study about weighted assessment factors under each emission variable. This study do survey targeting public officials, professors and other experts for Analytical Hierarchy Process(AHP), mostly use to make decisions, to weight assessment factors. We investigated the weighted values per Emission factor for Representative, Emission property, Accuracy and Uncertainty on AHP survey, and Representative factor was the highest, and then in the order of Emission property (0.26), Accuracy(0.22), Uncertainty (0.15).

Nitrous Oxide Emissions from Red Pepper, Chinese Cabbage, and Potato Fields in Gangwon-do, Korea

  • Seo, Youngho;Kim, Gunyeob;Park, Kijin;Kim, Kyunghi;Jung, Yeong-Sang
    • Korean Journal of Soil Science and Fertilizer
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    • v.46 no.6
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    • pp.463-468
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    • 2013
  • The level of nitrous oxide ($N_2O$), a long-lived greenhouse gas, in atmosphere has increased mainly due to anthropogenic source, especially application of nitrogen fertilizers. Quantifying $N_2O$ emission from agricultural field is essential to develop national inventories of greenhouse gases (GHGs) emission. The objective of the study was to develop emission factor to estimate direct $N_2O$ emission from agricultural field in Gangwon-do, Korea by measuring $N_2O$ emissions from potato (Solanum tuberosum), red pepper (Capsicum annum L.), and Chinese cabbage (Brassica campestris L.) cultivation lands from 2009 to 2012. Accumulated $N_2O$ emission was $1.48{\pm}0.25kg$ $N_2O-N\;ha^{-1}$ for red pepper, $1.27{\pm}0.27kg$ $N_2O-N\;ha^{-1}$ for potato, $1.49{\pm}0.06kg$ $N_2O-N\;ha^{-1}$ for Chinese cabbage cultivated in spring, and $1.14{\pm}0.22kg$ $N_2O-N\;ha^{-1}$ for fall Chinese cabbage. Emission factor of $N_2O$ calculated from accumulated $N_2O$ emission, nitrogen fertilization rate, and background $N_2O$ emission was $0.0051{\pm}0.0016kg$ $N_2O-N\;ha^{-1}$ N for cropland in Gangwon province. More extensive study is deserved to be conducted to develop $N_2O$ emission factor for upland crops in Korea through examining the emission factors from various regions and crops because $N_2O$ emission is influenced by many factors including climate characteristics, soil properties, and agricultural practices.

Comparative study of greenhouse gas emission from coastal and offshore gillnet and trap fisheries by field research (연근해 자망과 통발 어업의 온실가스 배출량 현장실측 연구)

  • LEE, Seok-Hyung;KIM, Hyunyoung;YANG, Yongsu;KANG, Da-Young
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.54 no.4
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    • pp.315-323
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    • 2018
  • Fossil fuel combustion during fishing activities is a major contributor to climate changes in the fishing industry. The Tier1 methodology calculation and on-site continuous measurements of the greenhouse gas were carried out through the use of fuel by the coastal and offshore gillnet (blue crabs and yellow croaker) and trap (small octopus and red snow crab) fishing boats in Korea. The emission comparison results showed that the field measurements are similar to or slightly higher than the Tier1 estimates for coastal gillnet and trap. In offshore gillnet and trap fisheries, Tier1 estimate of greenhouse gases was about $1,644-13,875kg\;CO_2/L$, which was more than the field measurement value. The $CO_2$ emissions factor based on the fuel usage was $2.49-3.2kg\;CO_2/L$ for coastal fisheries and $1.46-2.24kg\;CO_2/L$ for offshore fisheries. Furthermore, GHG emissions per unit catch and the ratio of field measurement and Tier1 emission estimate were investigated. Since the total catch of coastal fish was relatively small, the emission per unit catch in coastal fisheries was four to eight times larger. The results of this study could be used to determine the baseline data for responding to changes in fisheries environment and reducing greenhouse gas emission.