DOI: 10.1002/2014GL061503
论文题名: Four corners: The largest US methane anomaly viewed from space
作者: Kort E.A. ; Frankenberg C. ; Costigan K.R. ; Lindenmaier R. ; Dubey M.K. ; Wunch D.
刊名: Geophysical Research Letters
ISSN: 0094-9749
EISSN: 1944-9480
出版年: 2014
卷: 41, 期: 19 起始页码: 6898
结束页码: 6903
语种: 英语
英文关键词: fugitive emissions
; methane
; SCIAMACHY
; TCCON
Scopus关键词: Air quality
; Coal deposits
; Earth (planet)
; Gas emissions
; Greenhouse gases
; Column measurements
; Fugitive emissions
; High resolution simulations
; Methane emissions
; SCIAMACHY
; Space-based observations
; TCCON
; Transport modeling
; Methane
; air quality
; carbon emission
; environmental monitoring
; methane
; ozone
; remote sensing
; United States
英文摘要: Methane (CH4 ) is a potent greenhouse gas and ozone precursor. Quantifying methane emissions is critical for projecting and mitigating changes to climate and air quality. Here we present CH4 observations made from space combined with Earth-based remote sensing column measurements. Results indicate the largest anomalous CH4 levels viewable from space over the conterminous U.S. are located at the Four Corners region in the Southwest U.S. Emissions exceeding inventory estimates, totaling 0.59 Tg CH4 /yr [0.50-0.67; 2σ], are necessary to bring high-resolution simulations and observations into agreement. This underestimated source approaches 10% of the EPA estimate of total U.S. CH4 emissions from natural gas. The persistence of this CH4 signal from 2003 onward indicates that the source is likely from established gas, coal, and coalbed methane mining and processing. This work demonstrates that space-based observations can identify anomalous CH4 emission source regions and quantify their emissions with the use of a transport model. Key Points Four Corners exhibits largest CH4 anomaly seen from spaceEmissions of >0.5 Tg CH4 /yr have persisted since 2003Space- and ground-based CH4 identify missing emissions from fossil fuel extraction ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911092188&doi=10.1002%2f2014GL061503&partnerID=40&md5=8582c59037abd6b58e5fc9e631aa9859
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7013
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI, United States
Recommended Citation:
Kort E.A.,Frankenberg C.,Costigan K.R.,et al. Four corners: The largest US methane anomaly viewed from space[J]. Geophysical Research Letters,2014-01-01,41(19).