气候变化领域集成服务门户(CCPortal): Identification of Potential Methane Source Regions in Europe Using δ13CCH4 Measurements and Trajectory Modeling

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DOI	10.1029/2020JD033963
	Identification of Potential Methane Source Regions in Europe Using δ13CCH4 Measurements and Trajectory Modeling
	Varga T.; Fisher R.E.; France J.L.; Haszpra L.; Jull A.J.T.; Lowry D.; Major I.; Molnár M.; Nisbet E.G.; László E.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:17
英文摘要	The methane emissions from the Hungarian Pannonian Basin are not well qualified, due to a lack of measurements of CH4 mole fraction and δ13CCH4 in the air. This study reports methane measurements in air samples from Hungary, placing them in the context of regional and global background data, to investigate the inputs to the methane burden in Central Europe. CH4 mole fraction and δ13CCH4 from the Hungarian tall tower station, Hegyhátsál, and additional data from Mace Head (Ireland) and Zeppelin (Svalbard) are used with back trajectory modeling to identify central European source areas and their seasonal variation between the summer vegetation and winter heating periods. Methane measurements in air masses sampled in the European interior, have significantly higher maxima and seasonal amplitudes than at the Mace Head and Zeppelin European background sites. The mean CH4 mole fraction value is about 80 ppb higher than the comparable marine background, and values above 2,000 ppb were frequently observed between February 2013 and December 2015. The mean δ13CCH4 value −47.5 ± 0.3‰ (2σ) was comparable to values at all three monitoring sites, but specific pollution events were detected at Hegyhátsál. Concentration weighted trajectory modeling, meteorological parameters, stable carbon isotopic composition (δ13CCH4), and Miller-Tans analysis show that the main factors influencing CH4 at the Hegyhátsál, apart from diurnal and seasonal changes in the planetary boundary layer, are emissions from residential heating and industrial CH4 emissions during the winter. © 2021 American Geophysical Union. All Rights Reserved.
英文关键词	backward trajectory; cross-correlation analysis; greenhouse gas; methane; potential source region; stable carbon isotopes
来源期刊	Journal of Geophysical Research: Atmospheres
来源机构	英国自然环境研究理事会
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/237025
作者单位	Isotope Climatology and Environmental Research Centre (ICER), Institute for Nuclear Research (ATOMKI), Debrecen, Hungary; Doctoral School of Physics, University of Debrecen, Debrecen, Hungary; Department of Earth Sciences, Royal Holloway, University of London, Egham, United Kingdom; British Antarctic Survey, Natural Environment Research Council, Cambridge, United Kingdom; Research Centre for Astronomy and Earth Sciences, Geodetic and Geophysical Institute, Sopron, Hungary; Department of Geosciences, University of Arizona, Tucson, AZ, United States; University of Arizona AMS Laboratory, Tucson, AZ, United States
推荐引用方式 GB/T 7714	Varga T.,Fisher R.E.,France J.L.,et al. Identification of Potential Methane Source Regions in Europe Using δ13CCH4 Measurements and Trajectory Modeling[J]. 英国自然环境研究理事会,2021,126(17).
APA	Varga T..,Fisher R.E..,France J.L..,Haszpra L..,Jull A.J.T..,...&László E..(2021).Identification of Potential Methane Source Regions in Europe Using δ13CCH4 Measurements and Trajectory Modeling.Journal of Geophysical Research: Atmospheres,126(17).
MLA	Varga T.,et al."Identification of Potential Methane Source Regions in Europe Using δ13CCH4 Measurements and Trajectory Modeling".Journal of Geophysical Research: Atmospheres 126.17(2021).