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Annual climate impact and primary energy use of Swedish transport infrastructure
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Hållbarhet, utvärdering och styrning.ORCID-id: 0000-0002-0231-7111
The Swedish Transport Administration.
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Strategiska hållbarhetsstudier.
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Hållbarhet, utvärdering och styrning. KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Samhällsplanering och miljö.ORCID-id: 0000-0002-5535-6368
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Abstract [en]

By 2045, Sweden is to have zero net emissions of greenhouse gases, implying that also the transport sector must reduce its emissions to nearly zero by that year. Planning for emission reduction measures require network level studies showing environmental impacts of the transport network. Previous studies do not allow assessment of current hotspots in the infrastructure network, which limits their relevance for decision-support in this question. The aim of this paper is to assess the current annual climate impact and primary energy use of Swedish transport infrastructure by using a methodological approach based on life cycle assessment. The scope includes new construction and management of roads, railways, airports, ports, and fairway channels. The climate impact was estimated to 3 million tonnes carbon dioxide equivalents and the primary energy use was estimated to 27 terawatt hours. Mainly road and rail infrastructure contributed to these impacts. The environmental hotspots in the infrastructure network were identified as management of the infrastructure stock (particularly reinvestment of road and rail infrastructure) and material production (particularly production of asphalt, steel, and concrete). Planners should work systematically with emission and energy efficiency in these areas to reduce impacts of Swedish transport infrastructure. Additional research on impacts of small construction measures, the size of biogenic carbon emissions (in standing biomass as well as soil carbon), and the use and impacts of asphalt used in road construction and management would further increase the understanding of Swedish transport infrastructure at the network level.

Nationell ämneskategori
Annan naturvetenskap
Identifikatorer
URN: urn:nbn:se:kth:diva-239597OAI: oai:DiVA.org:kth-239597DiVA, id: diva2:1266352
Anmärkning

QC 20181213

Tillgänglig från: 2018-11-27 Skapad: 2018-11-27 Senast uppdaterad: 2018-12-13Bibliografiskt granskad
Ingår i avhandling
1. Life cycle assessment in early planning of transport systems: Decision support at project and network levels
Öppna denna publikation i ny flik eller fönster >>Life cycle assessment in early planning of transport systems: Decision support at project and network levels
2018 (Engelska)Licentiatavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

The Swedish Climate Policy Framework implies that the Swedish transport sector must reduce its greenhouse gas emissions to nearly zero by 2045. Previous studies have – using life cycle assessment – shown that indirect greenhouse gas emissions from the vehicle and infrastructure life cycle are significant and should be considered in transport policy and planning of transport systems, in addition to direct emissions of vehicle operation.

The aim of this thesis is to contribute with knowledge on climate impact and primary energy use of transport systems for decision-support in early planning at project and network levels, and evaluate and demonstrate how life cycle climate impact and primary energy use can be assessed in early planning. This thesis includes three papers that contribute to achieving this aim. Paper I developed a methodological approach to assess annual climate impact and primary energy use of Swedish road, rail, air, and sea transport infrastructure at a network level. Paper II then expanded this system to the assessment of the Swedish transport system at a network level, including national and international freight and passenger transport by road, rail, air, and sea. At the project level, Paper III examined how LCA can be used as decision-support in choice of road corridor, considering the practical prerequisite of data availability in early planning and usefulness of results in the decision-making process.

Paper I showed that the annual climate impact of Swedish transport infrastructure is around 3 million tonnes CO2 equivalents and that the annual primary energy use is around 27 TWh. Road infrastructure accounted for the largest proportion of impacts – around 70% of the climate impact and around 80% of the energy use. Paper II showed that the annual climate impact of the Swedish transport system was around 44 million tonnes CO2 equivalents and the primary energy use was around 178 TWh. Road transport and aviation together accounted for 90% of the climate impact and primary energy use. Indirect impacts were significant, especially for road and rail transport, accounting for 30% of the total climate impact and primary energy use. Paper III found that (1) collection of project specific data should focus on parameters that differentiate the road corridors, that can be influenced in early planning, and that are not directly related to the road length and (2) life cycle assessment based models used in early planning should include nation specific generic data approved by the national road authority. 

Ort, förlag, år, upplaga, sidor
Stockholm, Sweden: KTH Royal Institute of Technology, 2018
Serie
TRITA-ABE-DLT ; 1826
Nationell ämneskategori
Annan naturvetenskap
Identifikatorer
urn:nbn:se:kth:diva-239600 (URN)978-91-7873-013-1 (ISBN)
Presentation
2018-12-20, Pacific, KTH Royal Institute of Technology, Teknikringen 10B, Stockholm, Sweden, 10:00 (Svenska)
Opponent
Handledare
Anmärkning

QC 20181128

Tillgänglig från: 2018-11-28 Skapad: 2018-11-27 Senast uppdaterad: 2018-11-28Bibliografiskt granskad

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Liljenström, CarolinaÅkerman, JonasBjörklund, Anna

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Hållbarhet, utvärdering och styrningStrategiska hållbarhetsstudierSamhällsplanering och miljö
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