Unexplained enhancements of CH₃Br in the Arctic and sub-Arctic lower troposphere during TOPSE spring 2000 - Wingenter, O. (O. W. Wingenter) (authoraut); Sive, B. (B. C. Sive) (authoraut); Blake, D. (D. R. Blake) (authoraut); Rowland, F. (F. S. Rowland) (authoraut); Ridley, Brian (Brian A. Ridley) (authoraut) (Geophysical Research Letters)