Japan Meteorological Agency (JMA)
Annex 2: Results of CH4 Intercomparison

The measurement results of the methane reference gases are summarized in this page. The methane reference gases were circulated among several countries in Asia, the South-West Pacific and Japan. The intercomparisons thereafter that JMA has been carried out are listed in Table 1.

Results of Intercomparison

Table 1. List of Methane Reference Gas Intercomparisons by WCC-JMA

Number of Round Region Period of Intercomparison Participating Laboratory Cylinder No.
1st Asia Apr. 2001 - Nov. 2001 JMA, CMA, KMA CPB13002
South-West Pacific Apr. 2002 - Dec. 2003 JMA, CSIRO, NIWA
Japan Sep. 2004 - Mar. 2005 JMA, TU, NIES
2nd Asia Jul. 2005 - Aug. 2006 JMA, CMA, KMA, KRISS CPB31289
South-West Pacific Dec. 2006 - Aug. 2008 JMA, CSIRO, NIWA
Japan Jun. 2009 - Jan. 2010 JMA, NIES, TU
3rd Asia May 2008 - Jul. 2009 JMA, KRISS, KMA, CMA CPB13002
South-West Pacific Apr. 2010 - Feb.2011 JMA, CSIRO, NIWA
Japan Oct. 2012 - Feb. 2013 JMA, NiPR, AIST, MRI, NIES, TU
4th Asia Jun. 2011 - Mar. 2012 JMA, CMA, KMA CPB31288
South-West Pacific Jun. 2013 - Apr. 2014 JMA, CSIRO, NIWA, NOAA/ESRL
Japan Dec. 2015 - Aug. 2016 JMA, AIST, MRI, NIES
5th Asia Jul. 2014 - Nov. 2016 JMA, KMA, IITM CPB13002
South-West Pacific Jan. 2018 - (In planning) JMA, CSIRO, NIWA, NOAA/ESRL
6th Asia Mar. 2018 - (In planning) JMA, CMA, KMA, IITM CPD00241

Participants of Methane Reference Gas Intercomparison(2001-2016)

Last Updated: 2017.11.29