Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-7509-2017 |
Methane emissions from dairies in the Los Angeles Basin | |
Viatte, Camille1; Lauvaux, Thomas2; Hedelius, Jacob K.1; Parker, Harrison3; Chen, Jia4,6; Jones, Taylor4; Franklin, Jonathan E.4; Deng, Aijun J.2; Gaudet, Brian2; Verhulst, Kristal5; Duren, Riley5; Wunch, Debra1,7; Roehl, Coleen1; Dubey, Manvendra K.3; Wofsy, Steve4; Wennberg, Paul O.1 | |
2017-06-21 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany; Canada |
英文摘要 | We estimate the amount of methane (CH4) emitted by the largest dairies in the southern California region by combining measurements from four mobile solar-viewing ground-based spectrometers (EM27/SUN), in situ isotopic (CH4)-C-13/12 measurements from a CRDS analyzer (Picarro), and a high-resolution atmospheric transport simulation with a Weather Research and Forecasting model in large-eddy simulation mode (WRF-LES). The remote sensing spectrometers measure the total column-averaged dry-air mole fractions of CH4 and CO2 (X-CH4 and X-CO2) in the near infrared region, providing information on total emissions of the dairies at Chino. Differences measured between the four EM27/SUN ranged from 0.2 to 22 ppb (part per billion) and from 0.7 to 3 ppm (part per million) for X-CH4 and X-CO2, respectively. To assess the fluxes of the dairies, these differential measurements are used in conjunction with the local atmospheric dynamics from wind measurements at two local airports and from the WRF-LES simulations at 111 m resolution. Our top-down CH4 emissions derived using the Fourier transform spectrometers (FTS) observations of 1.4 to 4.8 ppt s(-1) are in the low end of previous top-down estimates, consistent with reductions of the dairy farms and urbanization in the domain. However, the wide range of inferred fluxes points to the challenges posed by the heterogeneity of the sources and meteorology. Inverse modeling from WRF-LES is utilized to resolve the spatial distribution of CH4 emissions in the domain. Both the model and the measurements indicate heterogeneous emissions, with contributions from anthropogenic and biogenic sources at Chino. A Bayesian inversion and a Monte Carlo approach are used to provide the CH4 emissions of 2.2 to 3.5 ppt s(-1) at Chino. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437937200001 |
WOS关键词 | 4 CORNERS ; TOP-DOWN ; CO2 ; RETRIEVALS ; MODEL ; FTIR ; VERIFICATION ; FLUXES ; MEXICO ; ERRORS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/30931 |
专题 | 地球科学 |
作者单位 | 1.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA; 2.Penn State Univ, Dept Meteorol, 503 Walker Bldg, University Pk, PA 16802 USA; 3.Los Alamos Natl Lab, Earth Syst Observat, Los Alamos, NM USA; 4.Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA; 5.CALTECH, Jet Prop Lab, Pasadena, CA USA; 6.Tech Univ Munich, Dept Elect & Comp Engn, Munich, Germany; 7.Univ Toronto, Dept Phys, Toronto, ON, Canada |
推荐引用方式 GB/T 7714 | Viatte, Camille,Lauvaux, Thomas,Hedelius, Jacob K.,et al. Methane emissions from dairies in the Los Angeles Basin[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(12). |
APA | Viatte, Camille.,Lauvaux, Thomas.,Hedelius, Jacob K..,Parker, Harrison.,Chen, Jia.,...&Wennberg, Paul O..(2017).Methane emissions from dairies in the Los Angeles Basin.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(12). |
MLA | Viatte, Camille,et al."Methane emissions from dairies in the Los Angeles Basin".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.12(2017). |
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