DOI: 10.1016/j.atmosenv.2015.01.010
Scopus记录号: 2-s2.0-84920887547
论文题名: USA emissions estimates of CH3CHF2, CH2FCF3, CH3CF3 and CH2F2 based on in situ observations at Mace Head
作者: Simmonds P ; G ; , Derwent R ; G ; , Manning A ; J ; , McCulloch A ; , O'Doherty S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 104 起始页码: 27
结束页码: 38
语种: 英语
英文关键词: HFC-134a
; HFC-143a
; HFC-152a
; HFC-32
; Interspecies correlation
; USA HFC emission estimates
Scopus关键词: Atmospheric movements
; Atmospheric radiation
; Carbon dioxide
; Polyols
; Uncertainty analysis
; HFC-134A
; HFC-143a
; HFC-152a
; HFC-32
; Interspecies correlations
; USA HFC emission estimates
; Fluorocarbons
; carbon monoxide
; fluorocarbon
; norflurane
; air mass
; atmospheric pollution
; emission
; estimation method
; hydrofluorocarbon
; numerical model
; pollutant source
; radiative forcing
; United Nations Framework Convention on Climate Change
; air
; air pollutant
; Article
; atmospheric dispersion
; comparative study
; environmental temperature
; exhaust gas
; North American
; priority journal
; radiative forcing
; seasonal variation
; surface property
; uncertainty
; United States
; Connacht
; County Galway
; Ireland
; Mace Head
; United States
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: We investigate the low level, surface-to-surface transport of five hydrofluorocarbons (HFC-152a, -134a, -143a, -125 and -32) from North America to the Advanced Global Atmospheric Gases Experiment (AGAGE) observing station at Mace Head, Ireland during 2005-2012. Using the UK Meteorological Office Numerical Atmospheric dispersion Modelling Environment (NAME) we select air masses, which are dominated by direct transport from the North American continent to Mace Head, thereby eliminating any significant influence from local or other regional sources. To estimate emissions of individual HFCs we use the interspecies correlation method with HFC-125 as the reference compound. We then compare these derived North American emissions with those reported to UNFCCC. Our results indicate an under-reporting of HFC-152a emissions by the USA to the UNFCCC, with an annual average difference of 24Gg (9-36Gg). For HFC-134a our estimated emissions indicate an over-reporting of USA reported emissions by 24Gg (21-28Gg). For HFC-143a USA reported emissions are lower than our estimates by 1.8Gg (1-3.5Gg); whereas for HFC-32 there is close agreement, within the uncertainties, between the USA emissions reported to UNFCCC and our emissions estimates. Combining our USA emissions estimates for HFC-152a, HFC-134a, HFC-143a and HFC-32 with the UNFCCC estimate for HFC-125 could contribute potentially 201±36Tg-CO2eqyr-1 to atmospheric radiative forcing in 2011-2012. This compares with UNFCCC of 146Tg-CO2eqyr-1 for the same five HFCs. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81965
Appears in Collections: 气候变化事实与影响
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作者单位: School of Chemistry, University of Bristol, United Kingdom; Rdscientific, Newbury, United Kingdom; Met. Office, FitzRoy Road, Exeter, Devon, United Kingdom
Recommended Citation:
Simmonds P,G,, Derwent R,et al. USA emissions estimates of CH3CHF2, CH2FCF3, CH3CF3 and CH2F2 based on in situ observations at Mace Head[J]. Atmospheric Environment,2015-01-01,104