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Japan
Meteorological Agency (JMA)
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Annex 2: Results of CH4 Intercomparison
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| 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. |
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 CPB13003 |
| 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 CPB31288 |
| 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 CPB13003 |
| 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 CPB31289 |
| 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 CPB13003 |
| South-West Pacific | Jan. 2018 - Sep. 2018 | JMA, CSIRO, NIWA, NOAA/ESRL | ||
| Japan | Sep. 2018 - Apr. 2019 | JMA, JAMSTEC, TU, AIST, NIES, MRI | ||
| 6th | Asia | Jan. 2018 - Sep.2019 | JMA, CMA, KMA, IITM | CPD00241 CPD00242 |
| South-West Pacific | Oct. 2020 - Jan. 2022 | JMA, CSIRO, NIWA, NOAA/ESRL | ||
| Japan | Jan. 2022 - Jul. 2022 | JMA, TU, AIST, NIES, NiPR, MRI | ||
| 7th | Asia | Oct. 2020 - Jan.2022 | JMA, CMA, KMA/NIMS | CPD00568 CPD00567 |
| South-West Pacific | 2024 - (On going) | JMA, CSIRO, NIWA, NOAA/ESRL | ||
| Japan | 2025 - (In planning) | |||
| 8th | Asia | 2025 - (On going) | JMA, CMA, KMA/NIMS, IITM | CPD00241 CPD00242 |