Hegglin, M. I.
Plummer, D. A.
Shepherd, T. G.
Scinocca, J. F.
Anderson, J.
Froidevaux, L.
Funke, B.
Hurst, D.
Rozanov, A.
Urban, J.
von Clarmann, T.
Walker, K. A.
Wang, H. J.
Tegtmeier, S.
Weigel, K.
Article History
Received: 19 February 2014
Accepted: 29 July 2014
First Online: 31 August 2014
Competing interests
: The authors declare no competing financial interests.