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
Hofmann, D.J., Oltmans, S.J., Lathrop, J.A., Harris, J.M., Vomel, H., Record Low Ozone at the South Pole in the Spring of 1993, Geophysical Research Letters, 21(6): 421-424
Tags: Ozone, Polar, Sonde