Local and regional enhancements of CH4, CO, and CO2 inferred from TCCON column measurements
文献类型：期刊论文
| 作者 | Mottungan, Kavitha2,18; Roychoudhury, Chayan2; Brocchi, Vanessa1,2; Gaubert, Benjamin4; Tang, Wenfu4; Mirrezaei, Mohammad Amin2; McKinnon, John2; Guo, Yafang2; Griffith, David W. T.5; Feist, Dietrich G.6,7,8 |
| 刊名 | ATMOSPHERIC MEASUREMENT TECHNIQUES
 |
| 出版日期 | 2024-10-07 |
| 卷号 | 17 |
| ISSN号 | 1867-1381 |
| DOI | 10.5194/amt-17-5861-2024 |
| 通讯作者 | Arellano Jr, Avelino F.() |
| 英文摘要 | In this study, we demonstrate the utility of available correlative measurements of carbon species to identify regional and local air mass characteristics as well as their associated source types. In particular, we combine different regression techniques and enhancement ratio algorithms with carbon monoxide (CO), carbon dioxide (CO2), and methane (CH4) total column abundance from 11 sites of the Total Carbon Column Observing Network (TCCON) to infer relative contributions of regional and local sources to each of these sites. The enhancement ratios provide a viable alternative to univariate measures of relationships between the trace gases that are insufficient in capturing source-type and transport signatures. Regional enhancements are estimated from the difference between bivariate regressions across a specific time window of observed total abundance of these species (BERr for bulk enhancement regression ratio) and inferred anomalies (AERr for anomaly enhancement regression ratio) associated with a site-specific background. Since BERr and AERr represent the bulk and local species enhancement ratio, respectively, its difference simply represents the site-specific regional component of these ratios. We can then compare these enhancements for CO2 and CH4 with CO to differentiate between combustion and non-combustion air masses. Our results show that while the regional and local influences in enhancements vary across sites, dominant characteristics are found to be consistent with previous studies over these sites and with bottom-up anthropogenic and fire emission inventories. The site in Pasadena shows a dominant local influence (> 60 %) across all species enhancement ratios, which appear to come from a mixture of biospheric and combustion activities. In contrast, Anmyeondo shows more regionally influenced (> 60 %) air masses associated with high-temperature and/or biofuel combustion activities. Ascension Island appears to only show a large regional influence (> 80 %) on CO / CO2 and CO / CH4, which is indicative of transported and combustion-related CO from the nearby African region, consistent with a sharp rise in column CO (3.51 +/- 0.43 % ppb yr(-1)) at this site. These methods have important applications to source analysis using spaceborne column retrievals of these species. |
| WOS关键词 | FOSSIL-FUEL CO2 ; LONG-RANGE TRANSPORT ; HYDROXYL RADICAL OH ; CARBON-DIOXIDE ; IN-SITU ; METHANE EMISSIONS ; ANTHROPOGENIC EMISSIONS ; GLOBAL DISTRIBUTION ; ATMOSPHERIC CO ; REUNION ISLAND |
| 资助项目 | National Aeronautics and Space Administration[80NSSC19K0947] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001330256300001 |
| 出版者 | COPERNICUS GESELLSCHAFT MBH |
| 资助机构 | National Aeronautics and Space Administration |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/134582]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Arellano Jr, Avelino F. |
| 作者单位 | 1.Assoc Agree Surveillance Qual Air, Atmo Auvergne Rhone Alpes, F-69500 Bron, France 2.Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ 85721 USA 3.Univ Arizona, Dept Chem & Environm Engn, Tucson, AZ 85721 USA 4.NSF Natl Ctr Atmospher Res, Boulder, CO 80307 USA 5.Univ Wollongong, Ctr Atmospher Chem, Sch Earth Atmospher & Life Sci, Wollongong, Australia 6.Deutsch Zentrum Luft & Raumfahrt, Inst Phys Atmosphare, Oberpfaffenhofen, Germany 7.Ludwig Maximilians Univ Munchen, Phys Atmosphare, Munich, Germany 8.Max Planck Inst Biogeochem, Jena, Germany 9.Natl Inst Environm Studies NIES, Onogawa 16-2, Tsukuba, Ibaraki 3058506, Japan 10.Royal Belgian Inst Space Aeron BIRA IASB, Brussels, Belgium |
| 推荐引用方式 GB/T 7714 | Mottungan, Kavitha,Roychoudhury, Chayan,Brocchi, Vanessa,et al. Local and regional enhancements of CH4, CO, and CO2 inferred from TCCON column measurements[J]. ATMOSPHERIC MEASUREMENT TECHNIQUES,2024,17. |
| APA | Mottungan, Kavitha.,Roychoudhury, Chayan.,Brocchi, Vanessa.,Gaubert, Benjamin.,Tang, Wenfu.,...&Arellano Jr, Avelino F..(2024).Local and regional enhancements of CH4, CO, and CO2 inferred from TCCON column measurements.ATMOSPHERIC MEASUREMENT TECHNIQUES,17. |
| MLA | Mottungan, Kavitha,et al."Local and regional enhancements of CH4, CO, and CO2 inferred from TCCON column measurements".ATMOSPHERIC MEASUREMENT TECHNIQUES 17(2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
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