Synthesising existing knowledge on the feasibility of BECCS: Workshop report (D1.b)

There is a growing and significant dependence on biomass energy with carbon capture and storage (BECCS) in future emission scenarios that do not exceed 2°C warming; over 100 of the 116 scenarios associated with concentrations between 430–480 ppm CO2 depend on BECCS to deliver global net negative emissions in the IPCC Fifth Assessment Report (AR5) … Read more

Overshoot scenarios and their climate response (A3)

This report reviews the current literature regarding “overshoot” scenarios where some aspect of the climate such as the temperature or GHG concentrations temporarily exceed a given target. The aim is to characterise such scenarios from Integrated Assessment Models (IAM) and where possible the climate to these scenarios, however most simulations with comprehensive climate models consider … Read more

Planetary limits to BECCS negative emissions (D2.a)

This study focuses on the planetary limits to BECCS from first generation annual bio-energy (BE) crops coupled with Carbon Capture and Storage (CCS). The acknowledged threat of many damaging aspects of climate change over the next century and beyond has prompted research into ways to reduce and reverse the recent increase in the amount of … Read more

Synthesising existing knowledge on the feasibility of BECCS (D1a)

There is a growing and significant dependence on biomass energy with carbon capture and storage (BECCS) in future emission scenarios that do not exceed 2°C warming; over a hundred of the 116 scenarios associated with concentrations between 430–480 ppm CO2 depend on BECCS to deliver global net negative emissions in the IPCC Fifth Assessment Report (AR5) … Read more

An updated view of tipping points and the relevance for long-term climate goals (A5)

While some aspects of climate change can be viewed as becoming proportionately larger with increasing forcings, other aspects may feature more complex, nonlinear behaviour. This can include abrupt and/or irreversible change, which may be associated with key thresholds. Such behaviour must be considered differently in assessments of the potential benefits of mitigation: it implies, for … Read more

Review of existing emissions pathways and evaluation of decarbonisation rates (C1)

Achieving deep reductions in greenhouse gas (GHG) emissions is required to limit the risks we face from climate change.  This assessment presents an overview of recent studies examining GHG emission pathways that are compatible with limiting average global temperature rise to levels close to 2°C or at least below 2.5°C by 2100.  In particular, the … Read more

AVOID 1: Summary of the Committee on Climate Change’s 2016 peak emission scenarios

Here we present the emissions, global concentration and global surface temperature changes for three mitigation scenarios that have emissions peak in 2016 from the Committee on Climate Change’s 2008 report. The mitigation scenarios are multi-gas and consist of the Kyoto greenhouse gases and other atmospheric pollutants, including SO2. In all scenarios the global emissions of … Read more