\begin{thebibliography}{1}
\providecommand{\natexlab}[1]{#1}
\providecommand{\url}[1]{\texttt{#1}}
\providecommand{\urlprefix}{URL }
\expandafter\ifx\csname urlstyle\endcsname\relax
  \providecommand{\doi}[1]{doi:\discretionary{}{}{}#1}\else
  \providecommand{\doi}{doi:\discretionary{}{}{}\begingroup
  \urlstyle{rm}\Url}\fi
\providecommand{\eprint}[2][]{\url{#2}}

\bibitem[{Murphy et~al.(2009)Murphy, Solomon, Portmann, Rosenlof, and
  F.P.M.}]{murphy}
Murphy, D., S.~Solomon, R.~Portmann, K.~Rosenlof, and F.P.M., 2009: An
  observationally based energy balance for the earth since 1950. \textit{J.
  Geophys. Res.}, \textbf{114}, D17\,107.

\end{thebibliography}
