TY - JOUR A1 - Tans, P. P. A1 - Crotwell, A. M. A1 - Thoning, K. W. T1 - Abundances of isotopologues and calibration of CO2 greenhouse gas measurements JO - Atmos. Meas. Tech. Discuss. J1 - AMTD VL - 2017 SP - 1 EP - 33 Y1 - 2017/02/14 PB - Copernicus Publications SN - 1867-8610 UR - https://amt.copernicus.org/preprints/amt-2017-34/ L1 - https://amt.copernicus.org/preprints/amt-2017-34/amt-2017-34.pdf DO - 10.5194/amt-2017-34 ER -