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One important tool for calculating a product's climate impact is life cycle assessment, Helena Nydahl shows in her thesis. Photo: Mostphotos
One important tool for calculating a product's climate impact is life cycle assessment, Helena Nydahl shows in her thesis. Photo: Mostphotos

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Reduced climate impact by better insight in life cycle assessment

The right tools are key to ensure investment decisions that reduce global emissions. This is shown by Helena Nydahl, Department of Applied Physics and Electronics, in her thesis Communication of Life Cycle Assessment Results - Life Cycle Key Performance Indicators, which will be defended on October 10 at Umeå University, Sweden.

“Prominent climate scientists argue that global emissions must reach zero by 2050 to avoid permanently damaging our possibilities on earth. But how can you know whether your choices contribute positively or negatively to the climate? One important tool for calculating a product's climate impact is life cycle assessment” says Helena Nydahl.

How big is the climate impact of this particular product? Are there steps in the manufacturing process of the product that have a particularly large carbon footprint? Are there equivalent products with a lower carbon footprint? These are the kinds of questions that a life cycle assessment can answer.

“More and more people in both the private and public sectors are starting to use life cycle assessment as a decision-making tool. This is a positive development, but for life cycle assessment to become a tool that is widely used by all types of decision-makers, perhaps even by the average person, the understanding and interpretation of the assessment results is crucial. In order to make choices that reduce global emissions, you need to understand the results of a life cycle assessment. However, at present that can be difficult if you are not an expert" says Helena Nydahl.

Research in the area of understanding and interpreting life cycle assessment results is limited. At the same time economic sustainability is often highly valued by decision-makers. Therefore, Helena Nydahl's thesis aims to contribute to the development of guidelines for interpreting life cycle assessment results, by introducing a communication approach for life cycle assessment results that is consistent with the economically driven nature of decision makers.

In her thesis, she presents key figures that quantify life cycle economic and environmental impacts in a way that that is inspired by traditional economic key figures of decision makers through, for example, social cost of carbon.

“Hopefully such approach can increase the use of life cycle assessment as a tool in decision-making and at the same time increase the understanding of the results that the tool provides” says Helena Nydahl.

About the dissertation
On Monday October 10, Helena Nydahl, Department of Applied Physics and Electronics at Umeå University, will defend her thesis titled Communication of Life Cycle Assessment Results - Life Cycle Key Performance Indicators. Swedish title: Nyckeltal för kommunikation av livscykelanalysresultat. The dissertation will take place at 13.00 in Triple Helix, University Management Building. The faculty opponent is adjunct professor Åsa Wahlström, Department of Building and Environmental Technology, Lund University, Sweden.

Helena Nydahl’s doctoral project has been financed by The Industrial Doctoral School at Umeå University and the external partner AB Bostaden.

About the Industrial Doctoral School
The Industrial Doctoral School is an inter-faculty research school that is based on collaboration between Umeå University and an organisation or a company. IDS aims to promote collaboration in order to strengthen research and development, increase the doctoral students’ employability, independence and innovative capacity, and increase knowledge and innovation in society.

Read more about the Industrial Doctoral School

Read the full thesis

For more information, please contact:

Helena Nydahl, doctoral student, Department of Applied Physics and Electronics, Umeå University
Phone: +46 70 3721221
Email: helena.nydahl@gmail.com

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Umeå University
Umeå University is one of Sweden’s largest institutions of higher education with over 36,000 students and 4,000 faculty and staff. The university is home to a wide range of high-quality education programmes and world-class research in a number of fields. Umeå University was also where the revolutionary gene-editing tool CRISPR-Cas9 was discovered that has been awarded the Nobel Prize in Chemistry.

At Umeå University, distances are short. The university's unified campus encourages academic meetings, an exchange of ideas and interdisciplinary co-operation, and promotes a dynamic and open culture in which students and staff rejoice in the success of others.

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Anna-Lena Lindskog

Anna-Lena Lindskog

Communication officer Faculty of Science & Technology +46706422956

Umeå University

Umeå University is one of Sweden's largest universities with over 37,000 students and 4,300 employees. The university is home to a wide range of education programmes and world-class research in a number of fields. Umeå University was also where the gene-editing tool CRISPR-Cas9 was discovered – a revolution in gene-technology that was awarded the 2020 Nobel Prize in Chemistry.

Founded in 1965, Umeå University is characterised by tradition and stability as well as innovation and change. Education and research on a high international level contributes to new knowledge of global importance, inspired, among other things, by the 2030 Agenda for Sustainable Development. The university houses creative and innovative people that take on societal challenges. Through long-term collaboration with organisations, trade and industry, and other universities, Umeå University continues to develop northern Sweden as a knowledge region.

The international atmosphere at the university and its unified campus encourages academic meetings, an exchange of ideas and interdisciplinary co-operation. The cohesive environment enables a strong sense of community and a dynamic and open culture in which students and staff rejoice in the success of others.

Campus Umeå and Umeå Arts Campus are only a stone's throw away from Umeå town centre and are situated next to one of Sweden's largest and most well-renowned university hospitals. The university also has campuses in the neighbouring towns Skellefteå and Örnsköldsvik.

At Umeå University, you will also find the highly-ranked Umeå Institute of Design, the environmentally certified Umeå School of Business, Economics and Statistics and the only architectural school with an artistic orientation – Umeå School of Architecture. The university also hosts a contemporary art museum Bildmuseet and Umeå's science centre – Curiosum. Umeå University is one of Sweden's five national sports universities and hosts an internationally recognised Arctic Research Centre.