Showing results for: GHG emission trends
A paper proposes a new method for evaluating the climate impact of short-lived greenhouse gases (GHGs) such as methane. Different GHGs are currently assessed on the basis of global warming potential (GWP), calculated as carbon dioxide equivalent, usually over a 100 year time horizon. The paper authors say that this misrepresents the impact of short-lived GHGs, because they have stronger climate impacts shortly after being released and lower impacts after being in the atmosphere for some time.
FCRN member Martin Heller of the Centre for Sustainable Systems at the University of Michigan has calculated the greenhouse gas emissions (GHGEs) and energy demand associated with the diets of individuals in the US, based on a one day dietary recall survey. The highest-emitting 20% of diets are responsible for 46% of diet-related GHGEs, while the lowest-emitting 20% of diets cause 6% of diet-related GHGEs. The food types causing the highest percentage of GHGEs are meats (57%), dairy (18%), beverages (6%) and fish and seafood (6%).
This paper looks at how trade liberalisation could impact the effectiveness of climate mitigation policies for non-CO2 emissions in the EU agricultural sector. Three scenarios are modelled: free trade agreements (FTA) alone; an EU carbon tax; and the combination of both.
The World Resources Institute has launched Resource Watch, an online tool for accessing and visualising data about resource use and sustainability issues around the world.
A new paper finds that a range of “ambitious but not unrealistic” climate mitigation options could, together, mean that using bioenergy with carbon capture and storage (BECCS) is not necessary for staying within 1.5°C of warming. Mitigation options considered include limiting population, lower meat consumption and use of lab-grown meat, lifestyle changes such as lower car use, electrification of energy end-use sectors, high efficiency manufacturing, agricultural intensification and mitigation of non-CO2 greenhouse gases.
Scotland’s soils contain over half of the UK’s soil carbon stock, making it important to know how to avoid soil carbon loss. The Scottish landscape is currently a net sink for carbon (mainly due to forestry). A recent report assesses current knowledge on soil carbon and land use in Scotland.
Three letters have been published in a recent edition of PNAS criticising the assumptions and conclusions drawn by a 2017 paper which sought to quantify the greenhouse gas (GHG) and nutritional implications of completely eliminating animals from US agriculture. A rebuttal letter by the authors of the original 2017 paper appears alongside the three letters in the journal.
This paper by FCRN member Dana Boyer examines how policy interventions at the city scale can affect three environmental outcomes of food production: greenhouse gas emissions, water use and land use. It uses India’s capital city Delhi as a case study. It sets out to assess the magnitude of city-scale food system actions as compared to certain actions which can be taken beyond the city boundary.
A new resource has been created by the Carbon Brief, which brings together data from a number of indicators that show the effects of climate change, showing trends in our climate, atmosphere, oceans, and the cryosphere (ice)
The purpose of this policy guidance note is to guide policy makers at country level to identify entry points for assessing and addressing food security and nutrition (FSN) in the face of climate change. It includes background information on how climate change and variability affect the agriculture sectors and FSN and how the agriculture sectors and dietary patterns contribute to GHG emissions.
In this information note from the CGIAR programme on Climate change, Agriculture and Food security (CCAFS), researchers present a rough estimate of the proportion of global agricultural emissions that can be attributed to smallholder farmers in developing countries.