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Japan
Meteorological Agency (JMA)
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Methane Reference Gas Intercomparison in the 3rd Round
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| In the 3rd round intercomparison, the methane reference gases (Cylinder number: CPB13002, CPB13003) prepared in Japan in 2008 were circulated between 2008 and 2013 in the order of Asia, the South-West Pacific and Japan. The measurement results of the methane reference gases are summarized in Table 1. |
Table 1. Results of Methane Reference Gas Intercomparison in the 3rd Round |
| Laboratory and Location | Date of Measurement |
Cylinder No. CPB13002 | Cylinder No. CPB13003 | Scale | Measu- rement Info |
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|---|---|---|---|---|---|---|---|---|---|
| Mole fraction (ppb) |
SD (ppb) |
N | Mole fraction (ppb) |
SD (ppb) |
N | ||||
| Asia 2008-2009 | |||||||||
| JMA Headquarters, Tokyo |
May 1-2, 2008 | 1664.4 | 1.2 | 10 | 1848.3 | 1.8 | 10 | NOAA04 | |
| KRISS, Daejeon | Sep. -Nov., 2008 | 1665.1 | 0.2 | 5 | 1851.2 | 0.2 | 5 | KRISS | |
| KMA KGAWC, Korea |
Oct. -Nov., 2008 | 1665.6 | 1.2 | 12 | 1851.3 | 1.4 | 12 | KRISS | |
| CMA CGAWBO at Mt. Waliguan |
Apr. 3-5, 2009 | 1661.1 | 0.9 | 14 | 1847.0 | 0.8 | 14 | NOAA04 | |
| Apr. 13-14, 2009 | 1662.3 | 0.2 | 9 | 1847.2 | 0.3 | 9 | NOAA04 | ||
| Apr. 14-16, 2009 | 1659.3 | 5.2 | 10 | 1846.1 | 1.9 | 10 | NOAA04 | ||
| CMA CAMS, CMA, Beijing |
Apr. 28-29, 2009 | 1661.9 | 2.0 | 10 | 1847.5 | 0.6 | 10 | NOAA04 | |
| Apr. 29, 2009 | 1662.5 | 0.2 | 9 | 1847.3 | 0.1 | 9 | NOAA04 | ||
| Apr. 30, 2009 | 1662.2 | 1.6 | 12 | 1847.2 | 1.8 | 12 | NOAA04 | ||
| JMA Headquarters, Tokyo |
Jul. 1-2, 2009 | 1664.3 | 1.1 | 10 | 1846.7 | 1.7 | 10 | NOAA04 | |
| South-West Pacific 2010-2011 | |||||||||
| JMA Headquarters, Tokyo |
Apr. 26-27, 2010 | 1664.2 | 1.1 | 10 | 1847.1 | 1.7 | 10 | NOAA04 | |
| CSIRO Aspendale, Australia |
Jun. 21-24, 29-30, 2010 |
1664.7 | 0.5 | 133 | 1847.2 | 0.5 | 143 | NOAA04 | |
| NIWA Wellington, New Zealand |
Oct. 14,19, 2010 | 1663.432 | 1.033 | 33 | 1845.641 | 1.038 | 33 | NOAA04 | |
| JMA Headquarters, Tokyo |
Feb. 14-15, 2011 | 1664.3 | 1.4 | 10 | 1846.6 | 1.8 | 10 | NOAA04 | |
| Japan 2012-2013 |
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| JMA Headquarters, Tokyo |
Oct. 11-12, 2012 | 1664.2 | 1.5 | 10 | 1844.8 | 1.1 | 10 | NOAA04 | |
| NiPR, Tokyo | Oct. 18-23, 2012 | 1661.7 | 2.6 | 16 | 1845.7 | 1.9 | 16 | NIPR | |
| AIST, Tsukuba | Nov. 12-18, 2012 | 1665.4 | 1.50 | 48 | 1847.9 | 1.25 | 47 | AIST | |
| MRI, Tsukuba | Nov. 2-6, Dec. 5-6, 2012 | 1663.8 | 1.07 | 3 | 1845.9 | 0.83 | 3 | MRI | |
| NIES, Tsukuba | Dec. 14-17, 2012 | 1665.81 | 0.90 | 27 | 1849.95 | 0.53 | 27 | NIES94 | |
| TU, Sendai | Jan. 12-13, 23-24, 2013 | 1663.6 | 1.1 | 15 | 1848.8 | 1.3 | 24 | TU-X08 | |
| JMA Headquarters, Tokyo |
Feb. 7-8, 19-20, 2013 | 1664.0 | 1.7 | 10 | 1845.6 | 1.9 | 10 | NOAA04 | |
| SD: Standard deviation; N: Number of measurements | ||
| KGAWC - | Korea Global Atmosphere Watch Center |
| CGAWBO - | China Global Atmosphere Watch Baseline Observatory |
| CAMS - | Chinese Academy of Meteorological Science |
| NOAA - | National Oceanic and Atmospheric Administration, U.S.A. |
Table 2. Information on Participants and their Contact |
| Participant (WEB Site) | Country | Information |
| Japan Meteorological Agency (JMA) | Japan | Contact |
| Korea Research Institute of Standards and Science (KRISS) | Rep. of Korea | Contact |
| Korea Meteorological Administration (KMA) | Rep. of Korea | Contact |
| China Meteorological Administration (CMA) | China | Contact |
| Commonwealth Scientific and Industrial Research Organisation (CSIRO) | Australia | Contact |
| National Institute of Water & Atmospheric Research Ltd. (NIWA) | New Zealand | Contact |
| National Institute of Polar Research (NiPR) | Japan | Contact |
| National Institute of Advanced Industrial Science and Technology (AIST) | Japan | Contact |
| Meteorological Research Institute (MRI) | Japan | Contact |
| National Institute for Environmental Studies (NIES) | Japan | Contact |
| Tohoku University (TU) | Japan | Contact |
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| Last Updated: 2013.03.27 |
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