Study on atmospheric methane variations based on its carbon and hydrogen isotope measurements

基于碳氢同位素测量的大气甲烷变化研究

• 批准号: 18204042
• 负责人: AOKI Shuji
• 金额: $ 29.87万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-18204042/
• 关键词: メタン; 同位体; 大気観測; 微生物; 化石燃料; バイオマス燃焼; 氷床コア; 広域観測; フィルン; モデル; 陸域水循環・物質循環; 温室効果気体; 3次元大気輸送モデル; 航空機; 船舶

Atmospheric CH_4 concentration and its carbon and hydrogen isotopic ratios have been measured on the global scale. By applying the observed data to a global CH_4 cycle model, respective emission ratios of CH_4 from biogenic, fossil and biomass burning sources are estimated to be 70, 16 and 13%. In addition, we revealed variations of CH_4 concentration and these isotopic ratios for the last 250 years by using air samples extracted from firn and ice cores. As a result of the measurements, CH_4 emission from biogenic, fossil and biomass burning sources have increased rapidly since the latter half of 19 century, since the beginning of 20 century and for the last several decades, respectively.

在全球范围内对大气CH_4浓度及其碳、氢同位素比值进行了测量。将观测数据应用于全球CH_4循环模式，估算出生物源、化石源和生物质燃烧源的CH_4排放比例分别为70%、16%和13%。此外，我们还利用从积雪和冰芯中提取的空气样品揭示了过去250年来CH_4浓度和这些同位素比值的变化。结果表明，生物源、化石燃料和生物质燃烧源的甲烷排放量分别自19世纪后半期、20世纪初和近几十年来迅速增加。

项目成果

A new compact cryogenic air sampler and its application in stratospheric greenhouse gas observation at Syowa Station, Antarctica

新型紧凑型低温空气采样器及其在南极昭和站平流层温室气体观测中的应用

• DOI: 10.1175/2009jtecha1283.1
• 发表时间: 2009
• 期刊: J. Atmos.Ocean Tech.
• 作者: Morimoto;S.;Yamanouchi;T.
• 通讯作者: T.

Age of stratospheric air unchanged within uncertainties over the past 30 years, Nature Geoscience

过去 30 年平流层空气的年龄在不确定性范围内保持不变，《自然地球科学》

• 发表时间: 2009
• 期刊: Nature Geoscience 2doi : 10.1038/ngeo388
• 作者: EEngel;A.;Mobius;T.;Bonisch;H.;Schmidt;U.;Heinz;R.;Levin;I.;Atlas;E.;Aoki;S.;Nakazawa;T.;Sugawara;S.;Moore;F.;Hurst;D.;Elkins;J.;Schauffler;S.;Andrews;A. and Boering;K.,
• 通讯作者: K.,

Thirty years of stratospheric mean age tracer measurements : no observable change in the stratospheric circulation

三十年的平流层平均年龄示踪测量：平流层环流没有观察到的变化

• 发表时间: 2008
• 作者: Engel A.;T. Mobius;H. Bonisch;U. Schmidt;R. Heinz;I. Levin;E. Atlas;S. Aoki;T. Nakazawa;S. Sugawara;F. Moore;D. Hurst;J. Elkins;S. Schauffler;A. Andrews;K. Boering
• 通讯作者: K. Boering

A method for determination of methyl chloride in air trapped in an ice core

冰芯中空气中氯甲烷的测定方法

• 发表时间: 2006
• 期刊: Chemosphere 63
• 作者: Saito;T.;Y. Yokouchi;S. Aoki;T. Nakazawa;Y. Fujii;O. Watanabe
• 通讯作者: O. Watanabe

Validation of ILAS-II Version 1.4 nitrous oxide and methane profiles

ILAS-II 1.4 版一氧化二氮和甲烷剖面的验证

• 发表时间: 2006
• 期刊: J.Geophys,Res. 111
• 作者: Ejiri;M. K.;Y. terao;T. Sugita;H. Nakajima;T. Yokota;G. Toon;B. Sen;G. Wetzel;H. Oelhaf;J. Urban;D. Multagh;H. Irie;N. Saitho;T. Tanaka;H. Kanzawa;M. Shiotani;S. Aoki;G. Hashida;T. Machida;T. Nakazawa;H. Kobayashi;Y. Sasano.
• 通讯作者: Y. Sasano.