TY - JOUR A1 - Aoki, N. A1 - Ishidoya, S. A1 - Tohjima, Y. A1 - Morimoto, S. A1 - Keeling, R. F. A1 - Cox, A. A1 - Takebayashi, S. A1 - Murayama, S. T1 - Intercomparison of O2 ∕ N2 ratio scales among AIST, NIES, TU, and SIO based on a round-robin exercise using gravimetric standard mixtures JO - Atmos. Meas. Tech. J1 - AMT VL - 14 IS - 9 SP - 6181 EP - 6193 Y1 - 2021/09/24 PB - Copernicus Publications SN - 1867-8548 UR - https://amt.copernicus.org/articles/14/6181/2021/ L1 - https://amt.copernicus.org/articles/14/6181/2021/amt-14-6181-2021.pdf DO - 10.5194/amt-14-6181-2021 ER -