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\documentclass[a4paper,10pt]{article}
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\usepackage[utf8x]{inputenc}
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%opening
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\title{Lagranto - Tutorial and Reference}
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\author{Michael Sprenger and Heini Wernli}
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\begin{document}
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\maketitle
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\section{Introduction}
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\section{Installation}
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\section{Tutorial - A Complete Lagranto Run}
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\subsection{Meteorological Data}
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The following files are mandatory for a Lagranto calculation covering the time period from 00\,UTC 19891020 to 18\,UTC 19981020:
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\vspace{0.5cm}
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\begin{minipage}{13cm}
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\begin{verbatim}
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ml_cst
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P19891020_00
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P19891020_06
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P19891020_12
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P19891020_18
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P19891021_00
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S19891020_00
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S19891020_06
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S19891020_12
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S19891020_18
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\end{verbatim}
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\end{minipage}
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\vspace{0.5cm}
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\noindent
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The meteorological fields on the primary P files are at least: zonal wind (U, in m/s); meridional wind (V, in m/s); vertical wind (OMEGA, in Pa/s);
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surface pressure (PS, in hPa). Additional fields might be available on the P files, e.g. temperature (T), specific
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humidity (Q),... Further secondary fields can be saved in the S files, which must have the same grid structure as the P files.
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In the example the following fields are saved on the S files: potential temperature (TH, in K); Ertel potential vorticity (PV, in pvu); relative humidity (in \%).
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Furthermore, the surface pressure (PS) is also saved on the S files; it must be exactly identical to the one in the P files. The horizontal and vertical grid of
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the meteorological fields are specified in the (global) attributes of the P, S and constants file ml\_cst (the header of the
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netCDF files are given in Appendix A).
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\noindent
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\subsection{Start Positions}
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\subsection{Trajectory Calculation}
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\subsection{Tracing Meteorological Fields}
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\subsection{Selecting Trajectories}
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\subsection{Trajectory Densities}
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\subsection{Interface Script}
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\section{Reference}
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\subsection{Trajectory Files}
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\subsection{Core Programs}
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\subsection{Tools}
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\section{Appendix}
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\subsection{Meteorological fields - netCDF files}
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The following example gives a
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\end{document}
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