Atmospheric Methane

Historic CH4 records from Antarctic and Greenland ice cores, Antarctic firn data, and archived air samples from Cape Grim, Tasmania - D.M. Etheridge, L.P. Steele, R.J. Francey, and R.L. Langenfelds

Atmospheric CH4 Concentrations from the CSIRO GASLAB Flask Sampling Network - L.P. Steele, P.B. Krummel, and R.L. Langenfelds

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