Identification of potential methane source regions in Europe using δ13CCH4 measurements and trajectory modeling
Identification of potential methane source regions in Europe using δ13CCH4 measurements and trajectory modeling
复制标题
使用 δ13CCH4 测量和轨迹建模识别欧洲潜在的甲烷源区域
DOI：
--
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
E. László
中科院分区：
文献类型：
--
作者：
T. Varga;R. Fisher;L. Haszpra;A. Jull;D. Lowry;I. Major;M. Molnár;E. Nisbet;E. László
匈牙利潘诺尼亚盆地的甲烷排放没有得到很好的定性，这是由于缺乏对空气中CH 4摩尔分数和δ 13 C CH 4的测量。本研究报告的甲烷测量从匈牙利的空气样本，将它们的背景下，区域和全球背景数据，调查在中欧的甲烷负担的投入。来自匈牙利高塔站Hegyhátsál的CH 4摩尔分数和δ 13 C CH 4，以及来自Mace Head（爱尔兰）和Zeppelin（Svalbard）的额外数据与后向轨迹模型一起使用，以识别中欧源区及其夏季植被和冬季加热期之间的季节变化。在欧洲内陆采样的空气质量中的甲烷测量，有显着较高的最大值和季节性振幅比在梅斯头和齐柏林欧洲背景网站。平均甲烷摩尔分数值比可比的海洋背景高出约80 ppb，2013年2月至2015年12月期间经常观察到高于2，000 ppb的值。平均δ 13 C CH 4值−47.5 ± 0.3‰（2σ）与所有三个监测点的值相当，但在Hegyhátsál检测到特定的污染事件。浓度加权轨迹模型、气象参数、稳定碳同位素组成（δ 13 C CH 4）和Miller-Tans分析表明，影响Hegyhátsál CH 4的主要因素，除了行星边界层的日变化和季节变化外，还有冬季住宅供暖和工业CH 4排放。
The methane emissions from the Hungarian Pannonian Basin are not well qualified, due to a lack of measurements of CH 4 mole fraction and δ 13 C CH4 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. CH 4 mole fraction and δ 13 C CH4 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 CH 4 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 δ 13 C CH4 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 (δ 13 C CH4 ), and Miller-Tans analysis show that the main factors influencing CH 4 at the Hegyhátsál, apart from diurnal and seasonal changes in the planetary boundary layer, are emissions from residential heating and industrial CH 4 emissions during the winter.
影响因子：
16.6
作者：
Chang, Yanhong;Lu, Wenjun;Gault, Baptiste
通讯作者：
Gault, Baptiste