TY - JOUR A1 - Bernard, S. A1 - Röckmann, T. A1 - Kaiser, J. A1 - Barnola, J.-M. A1 - Fischer, H. A1 - Blunier, T. A1 - Chappellaz, J. T1 - Constraints on N2O budget changes since pre-industrial time from new firn air and ice core isotope measurements JO - Atmos. Chem. Phys. J1 - ACP VL - 6 IS - 2 SP - 493 EP - 503 Y1 - 2006/02/16 PB - Copernicus Publications SN - 1680-7324 UR - http://www.atmos-chem-phys.net/6/493/2006/ L1 - http://www.atmos-chem-phys.net/6/493/2006/acp-6-493-2006.pdf DO - 10.5194/acp-6-493-2006 ER -