Cargando…

Atmospheric methane and nitrous oxide: challenges alongthe path to Net Zero

The causes of methane's renewed rise since 2007, accelerated growth from 2014 and record rise in 2020, concurrent with an isotopic shift to values more depleted in (13)C, remain poorly understood. This rise is the dominant departure from greenhouse gas scenarios that limit global heating to les...

Descripción completa

Detalles Bibliográficos
Autores principales: Nisbet, Euan G., Dlugokencky, Edward J., Fisher, Rebecca E., France, James L., Lowry, David, Manning, Martin R., Michel, Sylvia E., Warwick, Nicola J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8473950/
https://www.ncbi.nlm.nih.gov/pubmed/34565227
http://dx.doi.org/10.1098/rsta.2020.0457
_version_ 1784575111052918784
author Nisbet, Euan G.
Dlugokencky, Edward J.
Fisher, Rebecca E.
France, James L.
Lowry, David
Manning, Martin R.
Michel, Sylvia E.
Warwick, Nicola J.
author_facet Nisbet, Euan G.
Dlugokencky, Edward J.
Fisher, Rebecca E.
France, James L.
Lowry, David
Manning, Martin R.
Michel, Sylvia E.
Warwick, Nicola J.
author_sort Nisbet, Euan G.
collection PubMed
description The causes of methane's renewed rise since 2007, accelerated growth from 2014 and record rise in 2020, concurrent with an isotopic shift to values more depleted in (13)C, remain poorly understood. This rise is the dominant departure from greenhouse gas scenarios that limit global heating to less than 2°C. Thus a comprehensive understanding of methane sources and sinks, their trends and inter-annual variations are becoming more urgent. Efforts to quantify both sources and sinks and understand latitudinal and seasonal variations will improve our understanding of the methane cycle and its anthropogenic component. Nationally declared emissions inventories under the UN Framework Convention on Climate Change (UNFCCC) and promised contributions to emissions reductions under the UNFCCC Paris Agreement need to be verified independently by top-down observation. Furthermore, indirect effects on natural emissions, such as changes in aquatic ecosystems, also need to be quantified. Nitrous oxide is even more poorly understood. Despite this, options for mitigating methane and nitrous oxide emissions are improving rapidly, both in cutting emissions from gas, oil and coal extraction and use, and also from agricultural and waste sources. Reductions in methane and nitrous oxide emission are arguably among the most attractive immediate options for climate action. This article is part of a discussion meeting issue 'Rising methane: is warming feeding warming? (part 1)'.
format Online
Article
Text
id pubmed-8473950
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher The Royal Society
record_format MEDLINE/PubMed
spelling pubmed-84739502022-02-02 Atmospheric methane and nitrous oxide: challenges alongthe path to Net Zero Nisbet, Euan G. Dlugokencky, Edward J. Fisher, Rebecca E. France, James L. Lowry, David Manning, Martin R. Michel, Sylvia E. Warwick, Nicola J. Philos Trans A Math Phys Eng Sci Articles The causes of methane's renewed rise since 2007, accelerated growth from 2014 and record rise in 2020, concurrent with an isotopic shift to values more depleted in (13)C, remain poorly understood. This rise is the dominant departure from greenhouse gas scenarios that limit global heating to less than 2°C. Thus a comprehensive understanding of methane sources and sinks, their trends and inter-annual variations are becoming more urgent. Efforts to quantify both sources and sinks and understand latitudinal and seasonal variations will improve our understanding of the methane cycle and its anthropogenic component. Nationally declared emissions inventories under the UN Framework Convention on Climate Change (UNFCCC) and promised contributions to emissions reductions under the UNFCCC Paris Agreement need to be verified independently by top-down observation. Furthermore, indirect effects on natural emissions, such as changes in aquatic ecosystems, also need to be quantified. Nitrous oxide is even more poorly understood. Despite this, options for mitigating methane and nitrous oxide emissions are improving rapidly, both in cutting emissions from gas, oil and coal extraction and use, and also from agricultural and waste sources. Reductions in methane and nitrous oxide emission are arguably among the most attractive immediate options for climate action. This article is part of a discussion meeting issue 'Rising methane: is warming feeding warming? (part 1)'. The Royal Society 2021-11-15 2021-09-27 /pmc/articles/PMC8473950/ /pubmed/34565227 http://dx.doi.org/10.1098/rsta.2020.0457 Text en © 2021 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited.
spellingShingle Articles
Nisbet, Euan G.
Dlugokencky, Edward J.
Fisher, Rebecca E.
France, James L.
Lowry, David
Manning, Martin R.
Michel, Sylvia E.
Warwick, Nicola J.
Atmospheric methane and nitrous oxide: challenges alongthe path to Net Zero
title Atmospheric methane and nitrous oxide: challenges alongthe path to Net Zero
title_full Atmospheric methane and nitrous oxide: challenges alongthe path to Net Zero
title_fullStr Atmospheric methane and nitrous oxide: challenges alongthe path to Net Zero
title_full_unstemmed Atmospheric methane and nitrous oxide: challenges alongthe path to Net Zero
title_short Atmospheric methane and nitrous oxide: challenges alongthe path to Net Zero
title_sort atmospheric methane and nitrous oxide: challenges alongthe path to net zero
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8473950/
https://www.ncbi.nlm.nih.gov/pubmed/34565227
http://dx.doi.org/10.1098/rsta.2020.0457
work_keys_str_mv AT nisbeteuang atmosphericmethaneandnitrousoxidechallengesalongthepathtonetzero
AT dlugokenckyedwardj atmosphericmethaneandnitrousoxidechallengesalongthepathtonetzero
AT fisherrebeccae atmosphericmethaneandnitrousoxidechallengesalongthepathtonetzero
AT francejamesl atmosphericmethaneandnitrousoxidechallengesalongthepathtonetzero
AT lowrydavid atmosphericmethaneandnitrousoxidechallengesalongthepathtonetzero
AT manningmartinr atmosphericmethaneandnitrousoxidechallengesalongthepathtonetzero
AT michelsylviae atmosphericmethaneandnitrousoxidechallengesalongthepathtonetzero
AT warwicknicolaj atmosphericmethaneandnitrousoxidechallengesalongthepathtonetzero