气候变化领域集成服务门户(CCPortal): Fifteen Years of HFC-134a Satellite Observations: Comparisons With SLIMCAT Calculations

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DOI	10.1029/2020JD033208
	Fifteen Years of HFC-134a Satellite Observations: Comparisons With SLIMCAT Calculations
	Harrison J.J.; Chipperfield M.P.; Boone C.D.; Dhomse S.S.; Bernath P.F.
发表日期	2021
ISSN	2169897X
卷号	126 期号:8
英文摘要	The phase out of anthropogenic ozone-depleting substances such as chlorofluorocarbons under the terms of the Montreal Protocol led to the development and worldwide use of hydrofluorocarbons (HFCs) in refrigeration, air conditioning, and as blowing agents and propellants. Consequently, over recent years, the atmospheric abundances of HFCs have dramatically increased. HFCs are powerful greenhouse gases and are now controlled under the terms of the 2016 Kigali Amendment to the Montreal Protocol. HFC-134a is currently the most abundant HFC in the atmosphere, breaking the 100 ppt barrier in 2018, and can be measured in the Earth's atmosphere by the satellite remote-sensing instrument ACE-FTS (Atmospheric Chemistry Experiment-Fourier Transform Spectrometer), which has been measuring since 2004. This work uses the ACE-FTS v4.0 data product to investigate global distributions and trends of HFC-134a. These measurements are compared with a simulation of SLIMCAT, a state-of-the-art three-dimensional chemical transport model, which is constrained by global surface HFC-134a measurements. The agreement between observation and model is good, although in the tropical troposphere ACE-FTS measurements are biased low by up to 10–15 ppt. The overall ACE-FTS global trend of HFC-134a for the altitude range 5.5–24.5 km and 2004–2018 time period is approximately linear with a value of 4.49 ± 0.02 ppt/year, slightly lower than the corresponding SLIMCAT trend of 4.66 ppt/year. Using a simple box model, we also estimate the annual global emissions and burdens of HFC-134a from the model data, indicating that emissions of HFC-134a have increased almost linearly, reaching 236 Gg by 2018. © 2021. The Authors.
英文关键词	atmospheric composition; greenhouse gas; HFC-134a; hydrofluorocarbon; satellite remote sensing
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185322
作者单位	Department of Physics and Astronomy, University of Leicester, Leicester, United Kingdom; National Centre for Earth Observation, University of Leicester, Leicester, United Kingdom; Institute for Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, United Kingdom; National Centre for Earth Observation, University of Leeds, Leeds, United Kingdom; Department of Chemistry, University of Waterloo, Waterloo, ON, Canada; Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA, United States
推荐引用方式 GB/T 7714	Harrison J.J.,Chipperfield M.P.,Boone C.D.,et al. Fifteen Years of HFC-134a Satellite Observations: Comparisons With SLIMCAT Calculations[J],2021,126(8).
APA	Harrison J.J.,Chipperfield M.P.,Boone C.D.,Dhomse S.S.,&Bernath P.F..(2021).Fifteen Years of HFC-134a Satellite Observations: Comparisons With SLIMCAT Calculations.Journal of Geophysical Research: Atmospheres,126(8).
MLA	Harrison J.J.,et al."Fifteen Years of HFC-134a Satellite Observations: Comparisons With SLIMCAT Calculations".Journal of Geophysical Research: Atmospheres 126.8(2021).