scholarly journals A Methodological Framework for the Comparative Analysis of the Environmental Performance of Roadway and Railway Transport

2018 ◽  
Vol 30 (6) ◽  
pp. 721-731 ◽  
Author(s):  
Diamanto Mintzia ◽  
Fotini Kehagia ◽  
Anastasios Tsakalidis ◽  
Efthimios Zervas

Low-carbon transport is a priority in addressing climate change. Transport is still almost totally dependent on fossil fuels (96%) and accounts for almost 60% of global oil use. Sustainable transport systems, both passenger and freight, should be economically and technically feasible, but also low-carbon and environmentally friendly. The calculation of greenhouse gas emissions in transport projects is becoming a primary target of transport companies as a part of an endeavor for low-carbon strategies to reduce the energy demand and environmental impact. This paper investigates the CO2 impact of construction and operation of the main highway and railway line infrastructure in Greece, which connects Athens and Thessaloniki, the capital and the second biggest city in Greece respectively and provides a comparative analysis in roadway and railway transport.

2021 ◽  
Vol 13 (4) ◽  
pp. 2418
Author(s):  
Ana María Arbeláez Vélez ◽  
Andrius Plepys

Shared mobility options, such as car sharing, are often claimed to be more sustainable, although evidence at an individual or city level may contradict these claims. This study aims to improve understanding of the effects of car sharing on transport-related emissions at an individual and city level. This is done by quantifying the greenhouse gas (GHG) emissions of the travel habits of individuals before and after engaging with car sharing. The analysis uses a well-to-wheel (WTW) approach, including both business-to-consumer (B2C) and peer-to-peer (P2P) car-sharing fleets. Changes in GHG emissions after engaging in car sharing vary among individuals. Transport-related GHG emissions caused by car-free individuals tend to increase after they engage in car sharing, while emissions caused by previous car owners tend to fall. At the city level, GHG emissions savings can be achieved by using more efficient cars in sharing systems and by implementing greener mobility policies. Changes in travel habits might help to reduce GHG emissions, providing individuals migrate to low-carbon transport modes. The findings can be used to support the development and implementation of transport policies that deter car ownership and support shared mobility solutions that are integrated in city transport systems.


2021 ◽  
Vol 10 ◽  
pp. 100347
Author(s):  
Lorenzo Stilo ◽  
Diana Segura-Velandia ◽  
Heinz Lugo ◽  
Paul P. Conway ◽  
Andrew A. West

2018 ◽  
Vol 7 (2.28) ◽  
pp. 386 ◽  
Author(s):  
Trofimenko Yu. V ◽  
Nekrasov A G ◽  
Sinitsyna A S ◽  
Atyev K I

The principles of adaptive management of sustainable low carbon transport systems (SCTS) are developed based on the interaction of intellectual and Internet technologies, which ensure the effectiveness of core elements of the system throughout the life cycle of digital infrastructure and IT services. The technologies of proactive (anticipatory) management are accompanied by targeted procedures for reconfiguring the structures of transport system, and provide a comprehensive forecast of the system's behavior and increase its efficiency on the basis of a large array of digital data. The 4D model of SCTS transformation into the digital environment is developed, which allows integrate the most important modules of the transport system, ensuring highly efficient interaction of various objects in the interest of customers.  


Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2916
Author(s):  
Jérôme Payet ◽  
Titouan Greffe

Worldwide electricity consumption increases by 2.6% each year. Greenhouse gas emissions due to electricity production raise by 2.1% per year on average. The development of efficient low-carbon-footprint renewable energy systems is urgently needed. CPVMatch investigates the feasibility of mirror or lens-based High Concentration Photovoltaic (HCPV) systems. Thanks to innovative four junction solar cells, new glass coatings, Position Sensitive Detectors (PSD), and DC/DC converters, it is possible to reach concentration levels higher than 800× and a module efficiency between 36.7% and 41.6%. From a circular economy’s standpoint, the use of concentration technologies lowers the need in active material, increases recyclability, and reduces the risk of material contamination. By using the Life Cycle Assessment method, it is demonstrated that HCPV presents a carbon footprint ranking between 16.4 and 18.4 g CO2-eq/kWh. A comparison with other energy means for 16 impact categories including primary energy demand and particle emissions points out that the environmental footprint of HCPV is typically 50 to 100 times lower than fossil fuels footprint. HCPV’s footprint is also three times lower than that of crystalline photovoltaic solutions and is close to the environmental performance of wind power and hydropower.


Author(s):  
Kazuki NAKAMURA ◽  
Yoshitsugu HAYASHI ◽  
Hirokazu KATO ◽  
Atsushi FUKUDA ◽  
Fumihiko NAKAMURA ◽  
...  

Author(s):  
Füsun Çelebi Boz ◽  
Turgut Bayramoğlu

Abstract The increase in population and urbanization which emerged together with industrialization have brought the increase in energy demand with them. Carbon emissions rise as a result of the increase in energy demand and lead to climate change. Such changes in climate have negative effects on not only the environment but human life as well. Therefore, countries should implement energy policies with low carbon density in order to reduce greenhouse gas emission. In this context, preferring renewable energy sources can prevent temperature increase by reducing the effects of fossil fuels on the environment. Turkey should attach importance to renewable energy sources and invest in these sources in accordance with the commitments accepted at the Paris Climate Summit in order to reduce carbon emission.


Author(s):  
Stefan Bakker ◽  
Kathleen Dematera Contreras ◽  
Monica Kappiantari ◽  
Tuan Anh Nguyen ◽  
Danielle Guillen ◽  
...  

Emerging countries in Southeast Asia are facing considerable challenges in addressing rising motorisation and its negative impact on air quality, traffic, energy security, liveability, and greenhouse gas emissions. Indeed, even as initial policies to address these issues are being agreed and implemented, current trends are incompatible with sustainable development and long-term climate change targets. This paper presents a comparative analysis of the approach and status of sustainable, low-carbon transport policy in ASEAN countries and identifies differences and similarities, with the aim of helping assessment of feasibility of future policies and informing future studies on policy innovations and cross-country learning. The methodology is based on the taxonomy of policy components developed by Howlett and Cashore, and our data on comprehensive country studies for Indonesia, the Philippines, Thailand and Vietnam and interviews. We find that each country has a specific set of goals, objectives and targets that support sustainable transport, and, directly or indirectly, climate change mitigation. In terms of specific instruments and calibrations, which we analyse based on the Avoid-Shift-Improve approach, there are notable differences between the countries, for example in fuel economy policy.


2020 ◽  
Vol 209 ◽  
pp. 04006
Author(s):  
Yi Gao ◽  
Zhe Liu ◽  
Xinzhi Xu ◽  
Yanfen Guo ◽  
Jun Li

Northeast Asia is the most developed region in Asia with large energy demand, and plays an important role in the global economic development. Northeast Asia has been facing severe challenges in ensuring energy security, protecting the environment, and coping with climate change, because of their high dependency on fossil fuels and imports of oil from outside the region, and inverse distribution between energy resources and demand. In order to actively respond to climate change, promote the transition to low-carbon energy and sustainable development in the region, achieve the grand purpose of economic prosperity, social progress and ecological protection, this study is conducted with a focus on power grid interconnection in Northeast Asia. Based on the historical energy and power data in Northeast Asia, this paper studies the development trends of energy and power demand in future by combining qualitative and quantitative methods. Considering the distribution of clean energy bases, this paper proposes an energy interconnection scheme in Northeast Asia with high clear energy penetration scenario. To form the Asia-Europe energy interconnection, the construction of the Asia-Europe interconnection channels is briefly analyzed in this paper.


2019 ◽  
Vol 30 (4) ◽  
pp. 586-600 ◽  
Author(s):  
Wei-Ming Chen ◽  
Hana Kim

Given emerging concerns about climate change, low-carbon energy transition is advocated and promoted. Non-energy use of fossil fuels accounted for 8.9% of the world’s total final energy consumption in 2015. Non-energy use intensity does not show an evident reduction, while energy intensity as fuel per dollar of gross domestic product has decreased thanks to energy transition efforts such as energy efficiency promotion and renewable energy expansion.  This study conducted an extensive review of the circular economy and energy transition frameworks, and found that the energy transition framework has a critical gap, so it cannot provide a foundation for investigating non-energy use. This study suggests that the energy transition discourse needs to be extended to incorporate the transition of non-energy use and the achievement of a closed loop of non-energy use, which is part of the circular economy framework. The coordinated circular economy–energy transition approach could bring in synergistic effects, such as promoting circular economy activities among industries, reducing energy demand, and attaining additional greenhouse gas mitigation potential.


Author(s):  
A. I. S. Okoh

This paper examines the complexity of achieving economic growth simultaneously with low carbon transition in Nigeria. Nigeria’s Nationally Determined Contribution (NDC) seeks to carry out far-reaching cuts capable of reducing the scale of pollution recorded in the country. But the ratification of the agreement also works at cross-purposes with Vision 20:20 and the Economic Recovery and Growth Plan (ERGP) since these development blueprints are heavily reliant on fossil fuels. Qualitative data was used to arrive at the study’s' findings, complemented with quantitative data based on Nigeria Energy Calculator modelling tool for analyzing energy demand and supply in the country. The paper observed that a plethora of issues were impediments to the implementation of the NDC. That, fossil fuel energy generation as palliative is incapable of addressing issues of externality. Thus, Nigeria needs a new socio-economic contract termed the Food Sufficiency Economy (FSE) to usher in a net zero carbon trajectory. FSE is a convergence of food sovereignty and sufficiency economy. It is also in line with Africa’s eco-bio-communitarianism perspective, but slanted towards Climate-Smart Agriculture as the building block for a low carbon and climate resilient future. Okoh, A. I. S. | Department of Political Science, Benue State University Makurdi, Nigeria.


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