How Do Dietary Choices Influence the Energy-System Cost of Stabilizing the Climate?
AbstractWe investigate how different global dietary scenarios affect the constraints on, and costs of, transforming the energy system to reach a global temperature stabilization limit of 2 °C above the pre-industrial level. A global food and agriculture model, World Food Supply Model (WOFSUM), is used to create three dietary scenarios and to calculate the CH4 and N2O emissions resulting from their respective food-supply chains. The diets are: (i) a reference diet based on current trends; (ii) a diet with high (reference-level) meat consumption, but without ruminant products (i.e., no beef, lamb, or dairy, only pork and poultry); and (iii) a vegan diet. The estimated CH4 and N2O emissions from food production are fed into a coupled energy and climate-system optimization model to quantify the energy system implications of the different dietary scenarios, given a 2 °C target. The results indicate that a phase-out of ruminant products substantially increases the emission space for CO2 by about 250 GtC which reduces the necessary pace of the energy system transition and cuts the net present value energy-system mitigation costs by 25%, for staying below 2 °C. Importantly, the additional cost savings with a vegan diet––beyond those achieved with a phase-out of ruminant products––are marginal (only one additional percentage point). This means that a general reduction of meat consumption is a far less effective strategy for meeting the 2 °C target than a reduction of beef and dairy consumption. View Full-Text
- Supplementary File 1:
PDF-Document (PDF, 400 KB)
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Bryngelsson, D.; Hedenus, F.; Johansson, D.J.A.; Azar, C.; Wirsenius, S. How Do Dietary Choices Influence the Energy-System Cost of Stabilizing the Climate? Energies 2017, 10, 182.
Bryngelsson D, Hedenus F, Johansson DJA, Azar C, Wirsenius S. How Do Dietary Choices Influence the Energy-System Cost of Stabilizing the Climate? Energies. 2017; 10(2):182.Chicago/Turabian Style
Bryngelsson, David; Hedenus, Fredrik; Johansson, Daniel J.A.; Azar, Christian; Wirsenius, Stefan. 2017. "How Do Dietary Choices Influence the Energy-System Cost of Stabilizing the Climate?" Energies 10, no. 2: 182.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.