Dataset Information

Deep mitigation of CO₂ and non-CO₂ greenhouse gases toward 1.5 °C and 2 °C futures.

ABSTRACT: Stabilizing climate change well below 2 °C and towards 1.5 °C requires comprehensive mitigation of all greenhouse gases (GHG), including both CO₂ and non-CO₂ GHG emissions. Here we incorporate the latest global non-CO₂ emissions and mitigation data into a state-of-the-art integrated assessment model GCAM and examine 90 mitigation scenarios pairing different levels of CO₂ and non-CO₂ GHG abatement pathways. We estimate that when non-CO₂ mitigation contributions are not fully implemented, the timing of net-zero CO₂ must occur about two decades earlier. Conversely, comprehensive GHG abatement that fully integrates non-CO₂ mitigation measures in addition to a net-zero CO₂ commitment can help achieve 1.5 °C stabilization. While decarbonization-driven fuel switching mainly reduces non-CO₂ emissions from fuel extraction and end use, targeted non-CO₂ mitigation measures can significantly reduce fluorinated gas emissions from industrial processes and cooling sectors. Our integrated modeling provides direct insights in how system-wide all GHG mitigation can affect the timing of net-zero CO₂ for 1.5 °C and 2 °C climate change scenarios.

SUBMITTER: Ou Y

PROVIDER: S-EPMC8556229 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Deep mitigation of CO2 and non-CO2 greenhouse gases toward 1.5 °C and 2 °C futures.

Ou Yang Y Roney Christopher C Alsalam Jameel J Calvin Katherine K Creason Jared J Edmonds Jae J Fawcett Allen A AA Kyle Page P Narayan Kanishka K O'Rourke Patrick P Patel Pralit P Ragnauth Shaun S Smith Steven J SJ McJeon Haewon H

Nature communications 20211029 1

Stabilizing climate change well below 2 °C and towards 1.5 °C requires comprehensive mitigation of all greenhouse gases (GHG), including both CO2 and non-CO2 GHG emissions. Here we incorporate the latest global non-CO2 emissions and mitigation data into a state-of-the-art integrated assessment model GCAM and examine 90 mitigation scenarios pairing different levels of CO2 and non-CO2 GHG abatement pathways. We estimate that when non-CO2< ...[more]

PMID: 34716328

Similar Datasets

Project description:BackgroundThe urban sewer system is an important component of urban water infrastructure for sewage collection and transportation, and in-sewer transportation of sewage can cause multitudinous contaminant degradations which lead to formation of gaseous products. Although the greenhouse gases of methane and carbon dioxide have been confirmed to consist in the gaseous products, the mechanisms of greenhouse gas generation were unclear and the significances of greenhouse gases emission from sewers were generally underestimated.ResultsIn this study, 3 years of monitoring was conducted to evaluate the greenhouse gases emission in 37-km-long urban sewer systems covering 13 km2. The results showed that the emission of carbon dioxide and methane was extensively existing in sewers, and especially, exhibited a characteristic of regional difference. In order to reveal the formation mechanism of carbon dioxide and methane in sewers, the metagenomic approach was utilized to analyze the annotated pathways and homologous bio-enzymes, and it indicated that fourteen pivotal annotated pathways were involved in the carbon dioxide and methane generation. According to the metagenomics and 3-year monitoring results, the total amounts of carbon dioxide and methane emission in sewers were calculated by the transformation venation of contaminants (such as methyl alcohol, methylamine and acetic acid along branch sewer, sub-main sewer and main sewer, respectively). The calculation results showed that the total greenhouse gas emissions in sewer were calculated to be 199 t/day in Xi'an, and if scaling up as population proportion, the greenhouse gas emission from sewer systems in China could be 30,685 t/day. Comparing with the greenhouse gas emissions from different metropolises (New York City, London and Tokyo) and industries (dairy farms, automobile production and steel enterprises), the amount of greenhouse gases produced by the urban sewer system is much higher.ConclusionsThis study revealed the transformation pathways of contaminants which promoted the generation of greenhouse gases in sewers. Based on this analysis, the greenhouse gas emissions along sewer systems were calculated. The results indicate that the greenhouse gas emission from sewer systems is non-negligible, and should be attracted sufficient attention.

Dataset Information

Deep mitigation of CO₂ and non-CO₂ greenhouse gases toward 1.5 °C and 2 °C futures.

Publications

Deep mitigation of CO<sub>2</sub> and non-CO<sub>2</sub> greenhouse gases toward 1.5 °C and 2 °C futures.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets