Methane and other greenhouse gases in the Arctic - measurements, process studies and modelling (MAMM)

北极的甲烷和其他温室气体 - 测量、过程研究和建模 (MAMM)

• 批准号: NE/I028327/1
• 负责人: Ute Skiba
• 金额: $ 57.36万
• 依托单位: NERC CEH (Up to 30.11.2019)
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2011
• 资助国家: 英国
• 起止时间: 2011 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FI028327%2F1
• 关键词: Methane; other; greenhouse; gases; Arctic

The Arctic is a major source of atmospheric methane and other greenhouse gases, with both natural and anthropogenic emissions. Arctic greenhouse gas sources have the potential to be important globally, changing radiative forcing and atmospheric oxidizing capacity. Moreover, both palaeorecords and present-day studies suggest some sources, such as wetlands and methane hydrates, may show strong positive feedbacks [Nisbet and Chappellaz, 2009], so that the warming feeds the warming. It is urgent that Arctic greenhouse gas sources should be quantified, by strength, geographic location, character (e.g. wetland, gasfield, clathrate), and by temporal variation (summer, winter, day, night), and their vulnerability to change assessed. We will address these issues by an integrated program of measurement and modelling. Analysis of gas mixing ratios (concentrations), isotopic character, and source fluxes, will be made both from the ground and aircraft. Both past and new measurements will be modelled using a suite of techniques. Fluxes will be implemented into the JULES land surface model. Atmospheric modelling, including trajectory and inverse modelling will improve understanding on the local/regional scale, placing the role of Arctic emissions in large scale global atmospheric change.

北极是大气甲烷和其他温室气体的主要来源，有自然排放和人为排放。北极温室气体源有可能在全球范围内发挥重要作用，改变辐射强迫和大气氧化能力。此外，古记录和当今的研究都表明，湿地和甲烷水合物等一些来源可能会表现出强烈的正反馈[Nisbet 和 Chappellaz，2009]，因此变暖会加剧变暖。迫切需要根据强度、地理位置、特征（例如湿地、气田、包合物）和时间变化（夏季、冬季、白天、夜间）对北极温室气体源进行量化，并评估其对变化的脆弱性。我们将通过测量和建模的综合程序来解决这些问题。气体混合比（浓度）、同位素特征和源通量的分析将在地面和飞机上进行。过去和新的测量都将使用一套技术进行建模。通量将被应用到 JULES 陆地表面模型中。大气建模，包括轨迹和反演建模，将增进对局部/区域尺度的理解，将北极排放在大规模全球大气变化中的作用置于首位。

项目成果

Role of regional wetland emissions in atmospheric methane variability

• DOI: 10.1002/2016gl070649
• 发表时间: 2016-11-01
• 期刊: GEOPHYSICAL RESEARCH LETTERS
• 影响因子: 5.2
• 作者: McNorton, J.;Gloor, E.;Chipperfield, M. P.
• 通讯作者: Chipperfield, M. P.

Methane and carbon dioxide fluxes and their regional scalability for the European Arctic wetlands during the MAMM project in summer 2012

• DOI: 10.5194/acp-14-13159-2014
• 发表时间: 2014-01-01
• 期刊: ATMOSPHERIC CHEMISTRY AND PHYSICS
• 影响因子: 6.3
• 作者: O'Shea, S. J.;Allen, G.;Pyle, J.
• 通讯作者: Pyle, J.

Inference of spatial heterogeneity in surface fluxes from eddy covariance data: A case study from a subarctic mire ecosystem

• DOI: 10.1016/j.agrformet.2019.107783
• 发表时间: 2020-01
• 期刊: Agricultural and Forest Meteorology
• 影响因子: 6.2
• 作者: P. Levy;J. Drewer;M. Jammet;S. Leeson;T. Friborg;U. Skiba;M. Oijen