Angelbratt, J., Mellqvist, J., Blumenstock, T., Borsdorff, T., Brohede, S., Duchatelet, P., Forster, F., Hase, F., Mahieu,
E., Murtagh, D., Petersen, A. K., Schneider, M., Sussmann, R., & Urban, J. (2011).
A new method to detect long term trends of methane (CH4) and nitrous oxide (N2O) total columns measured within the NDACC ground-based
high resolution solar FTIR network. Atmospheric Chemistry and Physics, 11,
6167-6183.
