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GAW Report No. 264

Report of the Sixth Methane Reference Gas Inter-comparison Experiment for Asia from 2018 to 2019


Collection(s)
Authors
Published by
Published in
Geneva
Year published
2021
Summary

The WCC-JMA organized six rounds of the CH4 reference gas inter-comparison experiments from 2001 to 2019 to quantify differences among CH4 standard scales implemented at each participating laboratory as well as to monitor the long-term stability of standard gases in Asia and the South-West Pacific. In the 6th round robin inter-comparison for Asia, two reference gas cylinders were circulated in turn to JMA, CMA, KMA/NIMS, IITM, and JMA from January 2018 to September 2019. The inter-comparison results confirmed that the differences between each laboratory and WCC-JMA were within the GAW network extended compatibility goal of ±5 ppb.

Language of publication
English
Number of pages
24 p.
Format
Digital
Material type
Serial title, number
GAW Report No. 264
WMO Programmes
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