%%
%%  European Severe Storm Laboratory
%%
%%  European Conference of Severe Stroms -  4th edition - 2007
%%  Trieste, Italy,  10-14 September 2007
%%
%%  This is the LaTex template for the ECSS 2007 abstract submission
%%
%%  For any question contact: Dario B. Giaiotti
%%  Dario B. Giaiotti
%%
%%  ARPA FVG - OSMER
%%  Via Oberdan 18/A
%%  I-33040 Visco (UD) ITALY
%%  fax +39 0432 934100
%%  tel +39 0432 934165
%%  e-mail dario.giaiotti@osmer.fvg.it
%%  
%%  ------------------------------------
%%  EUROPEAN CONFERENCE ON SEVERE STORMS
%%  http://www.essl.org/ECSS/2007/
%%  ICTP 10-14 September 2007
%%  ------------------------------------
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%   This file has been created by inspiration of the APS files   
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%   This file is part of the APS files in the REVTeX 4 distribution.
%   Version 4.0 of REVTeX, August 2001
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%   Copyright (c) 2001 The American Physical Society.
%
%   See the REVTeX 4 README file for restrictions and more information.
%
% TeX'ing this file requires that you have AMS-LaTeX 2.0 installed
% as well as the rest of the prerequisites for REVTeX 4.0
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\documentclass[twocolumn,amsmath,amssymb,preprintnumbers]{revtex4}

% Some other (several out of many) possibilities

\usepackage{graphicx}% Include figure files
\usepackage{dcolumn}% Align table columns on decimal point
\usepackage{bm}% bold math


\begin{document}
\preprint{$4^{th}$ European Conference on Severe Storms \hspace{2 mm} 10 - 14 September 2007 - Trieste - ITALY}
%
% Put here the title of your abstract
% If you need to force breack use \\
%

\title{Title (Times New Roman 14-Heading Centred)\\for the Word document. Not here, simply fill in the title slot}

%
% Put here the authors all in the same line    
% If you need to force breack use \\
% Author$^1$, Author$^2$, ..., Author$^n$ 
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\author{Author$^1$, Author$^2$, ..., Author$^n$}

%
% Put here the authors affiliation in different lines 
% If you need to force breack use \\
% $^1$Institute Name, Institute Address, Country, e-mail address
%
\affiliation{$^1$Institute Name, Institute Address, Country, e-mail address} 
\affiliation{$^2$Different Institute Name, Different Institute Address, Country, e-mail address}

\affiliation{$^n$Different Institute Name, Different Institute Address, Country, e-mail address}

%
% Here is the date
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\date{\today}% It is always \today, today,
             %  but any date may be explicitly specified
\maketitle

%
% The body of the abstract here below 
%
\section{Introduction}
(Text in Times New Roman 10-normal justified and indented 0.5 cm - see example below)
The problem of hail formation and hail forecasting had been faced by several authors 
(Fawbush and Miller, 1953; Ludlam, 1958; Prodi and Wirth, 1973; Morgan, 1973), nevertheless, 
even if the general understanding of this phenomenon is highly increased, it still presents 
some open questions mainly because its occurrence involves both mesoscale and microphysical 
processes ...


\section{Presentation of Research or another title for this section}
(Text in Times New Roman 10-normal justified and indented 0.5 cm - see example below)
The effects of mixing ratio on hailstone growth are analyzed using a simple analytical 
model where it is assumed that the growth process is entirely due to the collection of 
supercooled droplets. With this assumption, the growth equation becomes 
(Mason, 1971; Knight and Knight, 2001)

Here below we show how to include a figure. Encapsulated Postscript files are automatically 
included according to the template suggestions. You need to download the file figure.eps to 
compile this example.

Fig.~\ref{fig:epsart} shows a figure that is small enough to
fit in a single column. It is embedded using the \texttt{figure}
environment which provides both the caption and the imports the figure
file.

%
% Example of figure here below
%

\begin{figure}
\includegraphics[scale=0.30,angle=-90]{figure.eps}% Use scale and angle parameters to fit the figure in the text
\caption{A figure caption. The figure captions are
        automatically numbered.
        The Rankine vortex model is characterized by a flow that is always and
        everywhere parallel to the $j$ unit vector, so the only non null vector
        component is the $v_\theta$ which is also the total velocity vector modulus.
        In this figure the normalized velocity vector modulus $(v/V_R)$ is plotted
        against the normalized radial distance $(r/R)$. Note that at the characteristic
        distance $R$ there flow is continuous, but the flow regime changes, form a
        solid rotation for $0 \leq r < R$ to a hyperbolic decrease at distances greater
        or equal than $R$.
        }
\label{fig:epsart}
\end{figure}



\section{Results and Conclusions or what else}
(Text in Times New Roman 10-normal justified and indented 0.5 cm - see example below).
In this, work it is shown that the average mixing ratio vertical profile over the Friuli Venezia 
Giulia plain is not constant, neither in the various months of the year nor in the four 
times-of-the-day. 

In particular, the amount of mixing ratio increases from January to August and from morning 
(06 UTC) to night (00 UTC), being the last differences particularly evident in July, August 
and September.

Taking into account these differences and using a simple analytical model for hail growth, 
it has been possible to reproduce the order of magnitude of the observed differences in 
the shape of the hailstone size distribution in the four times-of-the-day... 
\\

%
% Here below examples of equations
%

In \LaTeX\ there are many different ways to display equations, and a
few preferred ways are noted below. Displayed math will center by
default. Use the class option \verb+fleqn+ to flush equations left.

Below we have numbered single-line equations;

\begin{eqnarray}
\chi_+(p)\alt{\bf [}2|{\bf p}|(|{\bf p}|+p_z){\bf ]}^{-1/2}
\left(
\begin{array}{c}
|{\bf p}|+p_z\\
px+ip_y
\end{array}\right)\;,
\\
\left\{%
 \openone234567890abc123\alpha\beta\gamma\delta1234556\alpha\beta
 \frac{1\sum^{a}_{b}}{A^2}%
\right\}%
\label{eq:one}.
\end{eqnarray}

Note the open one in Eq.~(\ref{eq:one}).

Not all numbered equations will fit within a narrow column this
way. The equation number will move down automatically if it cannot fit
on the same line with a one-line equation:
\begin{equation}
\left\{
 ab12345678abc123456abcdef\alpha\beta\gamma\delta1234556\alpha\beta
 \frac{1\sum^{a}_{b}}{A^2}%
\right\}.
\end{equation}

When the \verb+\label{#1}+ command is used [cf. input for
Eq.~(\ref{eq:one})], the equation can be referred to in text without
knowing the equation number that \TeX\ will assign to it. Just
use \verb+\ref{#1}+, where \verb+#1+ is the same name that used in
the \verb+\label{#1}+ command.

Unnumbered single-line equations can be typeset
using the \verb+\[+, \verb+\]+ format:
\[g^+g^+ \rightarrow g^+g^+g^+g^+ \dots ~,~~q^+q^+\rightarrow
q^+g^+g^+ \dots ~. \]


\begin{equation}
    \left. \nabla \times \boldsymbol{F} \right|_z \;\; = \;\;
    \left[ \frac{1}{r}  (  \frac{\partial (r F_\theta)}{\partial r}  -   \frac{\partial  F_r }{\partial \theta} )   \right]
  \label{eq:curlcyl}
\end{equation}


%
% Here below an example of table          
%

\section{Example of table} 
Here is reported an example on how to produce a table. Please remember that this is 
an extended abstract and it is uniquely voted to the evaluation of the submitted work 
to the ECSS 2007, so tables have to be kept in a reasonable size and length. See 
table \ref{tab:table1}

\begin{table}
\begin{ruledtabular}
\begin{tabular}{cccccccc}
 &$r_c$ (\AA)&$r_0$ (\AA)&$\kappa r_0$&
 &$r_c$ (\AA) &$r_0$ (\AA)&$\kappa r_0$\\
\hline
Cu& 0.800 & 14.10 & 2.550 &Sn\footnotemark[1]
& 0.680 & 1.870 & 3.700 \\
Ag& 0.990 & 15.90 & 2.710 &Pb\footnotemark[2]
& 0.450 & 1.930 & 3.760 \\
Au& 1.150 & 15.90 & 2.710 &Ca\footnotemark[3]
& 0.750 & 2.170 & 3.560 \\
Mg& 0.490 & 17.60 & 3.200 &Sr\footnotemark[4]
& 0.900 & 2.370 & 3.720 \\
Zn& 0.300 & 15.20 & 2.970 &Li\footnotemark[2]
& 0.380 & 1.730 & 2.830 \\
Cd& 0.530 & 17.10 & 3.160 &Na\footnotemark[5]
& 0.760 & 2.110 & 3.120 \\
Hg& 0.550 & 17.80 & 3.220 &K\footnotemark[5]
&  1.120 & 2.620 & 3.480 \\
Al& 0.230 & 15.80 & 3.240 &Rb\footnotemark[3]
& 1.330 & 2.800 & 3.590 \\
Ga& 0.310 & 16.70 & 3.330 &Cs\footnotemark[4]
& 1.420 & 3.030 & 3.740 \\
In& 0.460 & 18.40 & 3.500 &Ba\footnotemark[5]
& 0.960 & 2.460 & 3.780 \\
Tl& 0.480 & 18.90 & 3.550 & & & & \\
\end{tabular}
\end{ruledtabular}
\label{tab:table1}
\footnotetext[1]{Here's the first, from Ref.~\onlinecite{feyn54}.}
\footnotetext[2]{Here's the second.}
\footnotetext[3]{Here's the third.}
\footnotetext[4]{Here's the fourth.}
\footnotetext[5]{And etc.}
\caption{A table with more columns still fits
properly in a column. Note that several entries share the same
footnote. Inspect the \LaTeX\ input for this table to see
exactly how it is done.}
\end{table}





\section{Aknowledgments: if there are any} 
(Text in Times New Roman 10-normal justified - see example below)
The authors would like to thank all the volunteers who, since 1988, contribute to the 
collection of the hailpads. Withouth their effort, this work ... cc
\\

%
% References here below 
% A new line separated by a blank line for each reference
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\section{References} 
FamilyName N., FamilyName N., Year: Title. Journal\_name\_in\_italic, volume firstpagenumber - lastpagenumber 

Giaiotti D. B., Stel F., 2006: Environmental Variables Affecting the Hailstone Size Distribution at the Ground. Atmos. Res., 20 109-112.


\end{document}
