Nitrogen trifluoride global emissions estimated from updated atmospheric measurements

Arnold T.; Harth C.M.; Mühle J.Manning A.J.Salameh P.K.Kim J.Ivy D.J.Steele L.P.Petrenko V.V.Severinghaus J.P.Baggenstos D.Weissa R.F.

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Nitrogen trifluoride global emissions estimated from updated atmospheric measurements

机译：Nitrogen trifluoride global emissions estimated from updated atmospheric measurements

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Nitrogen trifluoride (NF_3) has potential to make a growing contribution to the Earth's radiative budget; however, our understanding of its atmospheric burden and emission rates has been limited. Based on a revision of our previous calibration and using an expanded set of atmospheric measurements together with an atmospheric model and inverse method, we estimate that the global emissions of NF_3 in 2011 were 1.18 ± 0.21 Gg·y~(-1), or ~20 Tg CO_2- eq·y~(-1) (carbon dioxide equivalent emissions based on a 100-y global warming potential of 16,600 for NF3). The 2011 global mean tropospheric dry air mole fraction was 0.86 ± 0.04 parts per trillion, resulting from an average emissions growth rate of 0.09 Gg·y~(-2) over the prior decade. In terms of CO_2 equivalents, current NF_3 emissions represent between 17 and 36 of the emissions of other long-lived fluorinated compounds from electronics manufacture. We also estimate that the emissions benefit of using NF_3 over hexafluoroethane (C_2F_6) in electronics manufacture is significant-emissions of between 53 and 220 Tg CO_2-eq·y~(-1) were avoided during 2011. Despite these savings, total NF_3 emissions, currently ~10 of production, are still significantly larger than expected assuming global implementation of ideal industrial practices. As such, there is a continuing need for improvements in NF_3 emissions reduction strategies to keep pace with its increasing use and to slow its rising contribution to anthropogenic climate forcing.

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《Proceedings of the National Academy of Sciences of the United States of America》 |2013年第6期|2029-2034|共6页
作者
Arnold T.; Harth C.M.; Mühle J.Manning A.J.Salameh P.K.Kim J.Ivy D.J.Steele L.P.Petrenko V.V.Severinghaus J.P.Baggenstos D.Weissa R.F.;
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作者单位

Scripps Institution of Oceanography, University of California at San Diego, San Diego, CA 92093, United States;

Met Office, Exeter EX1 3PB, United Kingdom;

Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, United StatesCentre for Australian Weather and Climate Research, CSIRO Marine and Atmospheric Research, Aspendale VIC 3195, AustraliaDepartment of Earth and Environmental Sciences, University of Rochester, Rochester, NY 14627, United States;

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收录信息美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类自然科学总论;
关键词
Atmospheric composition; Climate change; Radiative forcing;

Nitrogen trifluoride global emissions estimated from updated atmospheric measurements

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