 |
Japan
Meteorological Agency (JMA)
|
 |
Methane Reference Gas Intercomparison in the 5th Round
|
|
|
| In the 5th round intercomparison, the methane reference gases (Cylinder number: CPB13002, CPB13003) prepared in Japan in 2014 will be circulated in the order of Asia (2014-2016), the South-West Pacific (2018-) 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 5th Round |
| Laboratory and Location | Date of Measurement |
Cylinder No. CPB13002 | Cylinder No. CPB13003 | Scale | Measu- rement Info |
||||
|---|---|---|---|---|---|---|---|---|---|
| Mole fraction (ppb) |
SD (ppb) |
N | Mole fraction (ppb) |
SD (ppb) |
N | ||||
| Asia 2014-2016 | |||||||||
| JMA Headquarters, Tokyo |
Jul. 2, 2014 | 1738.0 | 0.8 | 10 | 1897.2 | 1.0 | 10 | WMO X2004A | |
| KMA Anmyeon-do, Rep. of Korea |
Mar. 16, 2015 | 1738 | 0.48 | 1 | 1897.26 | 0.48 | 1 | WMO X2004A | |
| IITM Pune, India |
Jul. 14, 2015 to Jan. 1, 2016 |
1738 ** | 31.67 | 4 | 1874 ** | 2.61 | 5 | WMO X2004A | |
| JMA Headquarters, Tokyo |
Nov. 7, 2016 | 1738.3 | 1.9 | 10 | 1897.7 | 1.8 | 10 | WMO X2004A | |
| South-West Pacific 2018-
(In planning) |
|||||||||
| Japan
(In planning) |
|||||||||
| SD: Standard deviation; N: Number of measurements | ||
| **: Reference value | ||
Table 2. Information on Participants and their Contact |
| Participant (WEB Site) | Country | Information |
| Indian Institute of Tropical Meteorology (IITM) | India | Contact |
| Japan Meteorological Agency (JMA) | Japan | Contact |
| Korea Meteorological Administration (KMA) | Rep. of Korea | Contact |
|
|
| Last Updated: 2017.11.29 |
| E-mail: |