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

\begin{frame}

\frametitle{Concluding remarks}

{\footnotesize
\begin{itemize}
\item Parameterization of boundary layer processes is a key issue for climate modeling and climate change studies.
\item Climate models are more and more complex but the realism of the "new components" (chemistry, vegetation, ...) highly depends on the representation of atmospheric processes in general and boundary layer in particular.
\item In current climate models (and still for a while), boundary layer processes must be parameterized.
\item Boundary layer schemes must be valid from equator to pole, and from dry stable atmosphere to deep convection conditions.
\item The "new components" put new constraints on boundary layer schemes.
\item There is a large place for improvement of boundary layer parameterizations.
\item The combined use of a turbulent diffusion for small scales and mass flux schemes for organized structures seems a promizing way.
\item A hierarchy of approaches are available to improve and evaluate boundary layer parameterizations : 1D versus LES , 3D, nudged, weather forecast and climate, etc.

\end{itemize}
}
\end{frame}
