High-resolution glacial and deglacial record of atmospheric methane by continuous-flow and laser spectrometer analysis along the NEEM ice core
Chappellaz, J. ; Stowasser, C. ; Blunier, T. ; Baslev-Clausen, D. ; Brook, E. J. ; Dallmayr, R. ; Faïn, X. ; Lee, J. E. ; Mitchell, L. E. ; Pascual, O. ; Romanini, D. ; Rosen, J. ; Schüpbach, S.