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A research roadmap for quantifying non-state and subnational climate mitigation action

Non-state and subnational climate actors have become central to global climate change governance. Quantitatively assessing climate mitigation undertaken by these entities is critical to understand the…

Agricultural non-CO2 emission reduction potential in the context of the 1.5 °C target

Agricultural methane and nitrous oxide emissions represent around 10–12% of total anthropogenic GHG emissions and have a key role to play in achieving a 1.5 °C (above pre-industrial) climate…

Global Carbon Budget 2018

Accurate assessment of anthropogenic carbon dioxide (CO 2 ) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere – the “global carbon budget” – is important to…

Interactions between climate change mitigation and adaptation: The case of hydropower in Brazil

This paper performs a multi-model comparison to assess strategies for adaptation to climate change impacts in hydropower generation in Brazil under two Representative Concentration Pathways. The…

UNEP Emissions Gap Report 2018

Nations must triple their efforts in order to achieve the 2 °C climate target, according to the 2018 edition of UNEP’s annual Emissions Gap Report. Although it is still possible to keep global warming…

Are the G20 economies making enough progress to meet their NDC targets?

Under the Paris Agreement, countries committed to a variety of climate actions, including post-2020 greenhouse gas (GHG) emissions reduction targets. This study compares projected GHG emissions in the…

Interactions between social learning and technological learning in electric vehicle futures

The transition to electric vehicles is an important strategy for reducing greenhouse gas emissions from passenger cars. Modelling future pathways helps identify critical drivers and uncertainties…

A protocol for an intercomparison of biodiversity and ecosystem services models using harmonized land-use and climate scenarios

To support the assessments of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), the IPBES Expert Group on Scenarios and Models is carrying out an…

Using dynamic relative climate impact curves to quantify the climate impact of bioenergy production systems over time

The climate impact of bioenergy is commonly quantified in terms of CO 2 equivalents, using a fixed 100‐year global warming potential as an equivalency metric. This method has been criticized for the…

Transport electrification: the effect of recent battery cost reduction on future emission scenarios

Although the rapid fall in the costs of batteries has made electric vehicles (EVs) more affordable and boosted their sales, EVs still account for only a fraction of total car sales. In the last years…