Stefan Krüger Nielsen Air travel, life-style, energy use and environmental impact DTU BYG DANMARKS T EKNISKE UNIVERSITET Rapport BYG·DTU R-021 2001 ISSN 1601-2917 ISBN 87-7877-076-9 $LUWUDYHOOLIHVW\OHHQHUJ\XVH DQGHQYLURQPHQWDOLPSDFW Stefan Krüger Nielsen Ph.D. Dissertation September 2001 Financed by the Danish Energy Agency's Energy Research Programme Energy Planning Group Department of Civil Engineering (BYG•DTU) Technical University of Denmark Brovej, DK-2800 Kgs-Lyngby Denmark Website: www.byg.dtu.dk, e-mail:
[email protected] Report BYG•DTU R-021 2001 ISSN 1601-2917 ISBN 87-7877-076-9 Executive summary This summary describes the results of a Ph.D. study that was carried out in the Energy Planning Group, Department for Civil Engineering, Technical University of Denmark, in a three-year period starting in August 1998 and ending in September 2001. The project was funded by a research grant from the Danish Energy Research Programme. The overall aim of this project is to investigate the linkages between energy use, life style and environmental impact. As a case of study, this report investigates the future possibilities for reducing the growth in greenhouse gas emissions from commercial civil air transport, that is passenger air travel and airfreight. The reason for this choice of focus is that we found that commercial civil air transport may become a relatively large energy consumer and greenhouse gas emitter in the future. For example, according to different scenarios presented by Intergovernmental Panel on Climate Change (IPCC), commercial civil air transport’s fuel burn may grow by between 0,8 percent a factor of 1,6 and 16 between 1990 and 2050.