Meeting global temperature targets-the role of bioenergy with carbon capture and storage
Artikel i vetenskaplig tidskrift, 2013

In order to meet stringent temperature targets, active removal of CO2 from the atmosphere may be required in the long run. Such negative emissions can be materialized when well-performing bioenergy systems are combined with carbon capture and storage (BECCS). Here, we develop an integrated global energy system and climate model to evaluate the role of BECCS in reaching ambitious temperature targets. We present emission, concentration and temperature pathways towards 1.5 and 2 degrees C targets. Our model results demonstrate that BECCS makes it feasible to reach temperature targets that are otherwise out of reach, provided that a temporary overshoot of the target is accepted. Additionally, stringent temperature targets can be met at considerably lower cost if BECCS is available. However, the economic benefit of BECCS nearly vanishes if an overshoot of the temperature target is not allowed. Finally, the least-cost emission pathway over the next 50 years towards a 1.5 degrees C overshoot target with BECCS is almost identical to a pathway leading to a 2 degrees C ceiling target.

negative emissions

energy systems

climate change

integrated assessment models

Författare

Christian Azar

Chalmers, Energi och miljö, Fysisk resursteori

Daniel Johansson

Chalmers, Energi och miljö, Fysisk resursteori

Niclas Mattsson

Chalmers, Energi och miljö, Energiteknik

Environmental Research Letters

1748-9326 (ISSN)

Vol. 8 034004

Ämneskategorier

Meteorologi och atmosfärforskning

DOI

10.1088/1748-9326/8/3/034004