Measurements of HCFC-142b and HCFC-141b in the Cape Grim air archive:1978-1993

Oram, D.E., Reeves, C.E. ORCID:, Penkett, S.A. and Fraser, P.J. (1995) Measurements of HCFC-142b and HCFC-141b in the Cape Grim air archive:1978-1993. Geophysical Research Letters, 22 (20). pp. 2741-2744. ISSN 0094-8276

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Stored air samples collected at Cape Grim, Tasmania since 1978, have been analyzed by GC-MS to investigate the change in the tropospheric concentration of HCFC-142b and HCFC-141b over the past 15 years. Between April 1978 and September 1993 the concentration of HCFC-142b rose, with the majority of this increase occurring from 1989 onwards. From 1989 to 1991 the average concentration of HCFC-141b was 0.08 ± 0.01 pptv. A very sharp increase in concentration began in 1992 however. Using a 2-D model of atmospheric chemistry, constrained by these observations, global emissions of these two compounds have been calculated and found to differ from other estimates. -from Authors

Item Type: Article
Faculty \ School: Faculty of Science > School of Environmental Sciences
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Depositing User: Pure Connector
Date Deposited: 11 Nov 2013 11:14
Last Modified: 20 Mar 2023 09:35
DOI: 10.1029/95GL02849

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