Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031339 |
Multispecies Assessment of Factors Influencing Regional CO2 and CH4 Enhancements During the Winter 2017 ACT-America Campaign | |
Baier, Bianca C.1,2; Sweeney, Colm2; Choi, Yonghoon3; Davis, Kenneth J.4,5; DiGangi, Joshua P.3; Feng, Sha4; Fried, Alan6; Halliday, Hannah3; Higgs, Jack1; Lauvaux, Thomas4; Miller, Benjamin R.1,2; Montzka, Stephen A.1; Newberger, Timothy1,2; Nowak, John B.1; Patra, Prabir7; Richter, Dirk6; Walega, James6; Weibring, Petter6 | |
2020-01-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Japan |
英文摘要 | Diagnosing carbon dioxide (CO2) and methane (CH4) fluxes at subcontinental scales is complicated by sparse observations, limited knowledge of prior fluxes and their uncertainties, and background and transport errors. Multispecies measurements in flasks sampled during the wintertime ACT-America campaign were used for background characterization and source apportionment of regional anthropogenic CO2 and CH4 fluxes when ecosystem CO2 exchange is likely to be least active. Continental background trace gas mole fractions for regional enhancements are defined using samples from the upper troposphere and assessed using model products. Trace gas enhancements taken from flask samples in the lower troposphere with background levels subtracted out are then interpreted to inform CO2 and CH4 enhancement variability in the eastern United States. Strong correlations between CO2 and CH4 enhancements in the Midwestern and Mid-Atlantic United States indicated colocated anthropogenic sources. Oil and natural gas influence was also broadly observed throughout the entire observational domain. In the Midwestern United States, agricultural influence on CO2 and CH4 enhancement variability was evident during above-average wintertime temperatures. Weaker correlations between CO2 and anthropogenic tracer enhancements in the Southeastern United States indicated potentially nonnegligible wintertime ecosystem CO2 exchange, with biogenic tracers indicating more active surface processing than other regions. These whole-air flask samples illuminated significant regional CO2 and CH4 sources or sinks during Atmospheric Carbon and Transport-America (ACT-America) and can provide additional information for informing regional inverse modeling efforts. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000521080000013 |
WOS关键词 | FOSSIL-FUEL CO2 ; ATMOSPHERIC CARBON-DIOXIDE ; BIOMASS BURNING EMISSIONS ; METHANE EMISSIONS ; AIRBORNE MEASUREMENTS ; CHLORINE EMISSIONS ; VERTICAL PROFILES ; SOUTHEASTERN US ; METHYL-BROMIDE ; NORTH-AMERICA |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/280009 |
专题 | 气候变化 |
作者单位 | 1.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 2.NOAA, Earth Syst Res Lab, Global Monitoring Div, Boulder, CO USA; 3.NASA, Langley Res Ctr, Hampton, VA 23665 USA; 4.Penn State Univ, Dept Meteorol & Atmospher Sci, University Pk, PA 16802 USA; 5.Penn State Univ, Earth & Environm Syst Inst, University Pk, PA 16802 USA; 6.Univ Colorado, Inst Alpine & Arctic Res, Boulder, CO 80309 USA; 7.Japan Agcy Marine Earth Sci & Technol, Kaganawa, Japan |
推荐引用方式 GB/T 7714 | Baier, Bianca C.,Sweeney, Colm,Choi, Yonghoon,et al. Multispecies Assessment of Factors Influencing Regional CO2 and CH4 Enhancements During the Winter 2017 ACT-America Campaign[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(2). |
APA | Baier, Bianca C..,Sweeney, Colm.,Choi, Yonghoon.,Davis, Kenneth J..,DiGangi, Joshua P..,...&Weibring, Petter.(2020).Multispecies Assessment of Factors Influencing Regional CO2 and CH4 Enhancements During the Winter 2017 ACT-America Campaign.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(2). |
MLA | Baier, Bianca C.,et al."Multispecies Assessment of Factors Influencing Regional CO2 and CH4 Enhancements During the Winter 2017 ACT-America Campaign".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.2(2020). |
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