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Spectral reference data for N2O


The EUMETRISPEC initiative of WG 3.42, which aims at highly accurate determinations of molecular spectral reference data for important atmospheric gases, concentrated this year on the extension of the existing nitrous oxide (N2O) results. For this purpose, the reference dataset measured by FTIR was simultaneously evaluated for the P and R branches of the 2ν3 band, by that a complete and coherent dataset was nearly completed. Measurement uncertainties of the individual line parameters were in certain cases decreased by more than one order of magnitude.