
\def\V{{\bf v}}
\def\ave#1{\overline{#1}}
\def\mave#1{\tilde{#1}}
\def\q{c}

\begin{frame}
 \frametitle{Boundary layer in the "Earth System"}

Driven by the Global Change studies,
climate models are more and more complex :\\
CO$_2$ cycle, CH$_4$, ozone chemistry, aerosols, effect of land use\\
$\implies$ coupling between atmosphere, ocean, chemistry, vegetation ...\\


Leading to so-called "Earth System Models".

Boundary layer is central for most of those components.

\begin{columns}
\column{0.5\textwidth}
\centerline{\includegraphics[bb=0 0 830 600, clip,width=\textwidth]{/home/hourdin/PRESENTATIONS/IMAGES/PBL/PDF/cycle2.pdf}}

\column{0.5\textwidth}
\centerline{\includegraphics[bb=30 30 740 500, clip,width=\textwidth]{gcm9.pdf}}
\end{columns}

\end{frame}
