Articles | Volume 10, issue 7
Research article
05 Jul 2017
Research article |  | 05 Jul 2017

The arctic seasonal cycle of total column CO2 and CH4 from ground-based solar and lunar FTIR absorption spectrometry

Matthias Buschmann, Nicholas M. Deutscher, Mathias Palm, Thorsten Warneke, Christine Weinzierl, and Justus Notholt

Data sets

Column averaged dry-air mole fractions of CO2 and CH4 at Ny-Ålesund from 2012 to 2016 M. Buschmann, N. M. Deutscher, M. Palm, T. Warneke, T. Weinzierl, and J. Notholt

Short summary
The column averaged dry-air mole fractions of CO2 and CH4 (xCO2 and xCH4) of the Total Carbon Column Observing Network (TCCON) are retrieved from solar absorption Fourier transform infrared (FTIR) spectrometry. At the Ny-Ålesund site in the high arctic, however, during the polar night no solar measurements are possible. Here, we present a new method to measure xCO2 and xCH4 using the moon as a light source in the near-infrared and present the complete seasonal cycles of xCO2 and xCH4.