source: trunk/LMDZ.MARS/doc/water.tex @ 3556

Last change on this file since 3556 was 1954, checked in by emillour, 7 years ago

Mars GCM:

  • Make a "doc" subdirectory to store the documentation source files with the code.

EM

File size: 1.3 KB
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1\chapter{Water Cycle Simulation}
2
3\label{sc:water}
4
5In order to simulate the water cycle with the LMD GCM:
6
7\begin{itemize}
8\item In {\tt callphys.def}, set tracer to true: {\tt tracer=.true.}.
9
10\item It is best to run with a semi-interactive dust (in order to
11better represent the evolution available condensation nuclei) and thus set
12{\tt dustbin = 2}, and use corresponding additional tracers ({\tt dust\_mass}
13and {\tt dust\_number} which correspond to the first two moments of the dust
14distribution).
15
16\item Use the same options as given in the sample {\tt callphys.def.watercycle}
17file provided in {\tt LMDZ.MARS/deftank}.
18
19\item {\bf Settings}
20You need to run with at least 4 tracers (if you don't have dust
21({\tt dustbin=0}) or other chemical species ({\tt photochem=F}),
22but 7 is recommended, and an appropriate {\tt traceur.def} for running with
23combined CO22, dust and water cycle should be:
24\begin{verbatim}
257
26co2
27dust_mass
28dust_number
29h2o_vap
30h2o_ice
31ccn_mass
32ccn_number
33\end{verbatim}
34Note that the order in which tracers are set in the {\tt tracer.def} file
35is not important.
36
37\item {\bf Run} \\ \\
38Same as usual. Just make sure that your start files contains
39the initial states for all the tracers you use (or else compile
40and run {\bf newstart.e} to initialize them).
41
42\end {itemize}
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