2010, Petersen, A.K., Warneke, T.; Frankenberg, C.; Bergamaschi, P.; Gerbig, C.; Notholt, J.; Buchwitz, M.; Schneising, O. & Schrems, O., First ground-based FTIR observations of methane in the inner tropics over several years, Atmospheric Chemistry and Physics, 10(15), 7231-7239
Tags: CH4, FTIR
1989, Zander, R., Ph. Demoulin, D. H. Ehhalt, and U. Schmidt, Secular increase of the vertical column abundance of methane derived from IR solar spectra recorded at the Jungfraujoch station, Journal of Geophysical Research, 94, 11,029-11,039
Tags: CH4, FTIR