This tutorial is designed to help new
users become familiar with running the model. The minimum
computational requirements to run the model are
512 MB of RAM and 50 GB of hard disk space. Since many of our
users (and we here at ICTP) run the model on a PC under Linux,
during the tutorial we
will use the Makefiles for the Portland Group Compiler (PGF) in
our examples. You should use the appropriate Makefile for your
machine. The present version of RegCM3 supports multi-platforms
running under a UNIX (or Linux) environment such as IBM, SGI, SUN, DEC,
and PC-Linux (with
PGI FORTRAN
Compiler
or
Intel
IFC FORTRAN compiler).
Here we present step-by-step instructions for downloading RegCM3 and
running a test case using a domain centered over Trieste, Italy
for the month
of August 2002. During the summer of 2002, heavy rains caused flooding
over the Czech Republic, Austria, Germany, Slovakia, Poland, Hungary,
Romania, and Croatia.
During the tutorial, please note that all commands that you type are
in
Courier font.
You can download sample files to check your work as we go along. These
files are marked with
. We have
chosen to use
xemacs
as our text editor, but you can use any editor you like - just
subsitute the name (e.g.,
vi) for
xemacs.
Tutorial Contents
Downloading the model code and data
Pre-processing
Running and restarting the model
Post-processing and visualizing the output
Let's get started!
Downloading the model code and
data: Download RegCM3 and data for running.
1. Download the
regcm.tar.gz
file and
uncompress and untar it:
tar xvfz
regcm.tar.gz
Untarring regcm.tar.gz
wil create a main directory called
RegCM
and several subdirectories
containing all the files needed for pre-processing, running the model
and post-processing the output. Pre-processing programs are in
the
RegCM/PreProc
sub-directory, the model source code is in the
RegCM/Main sub-directory, and the
post-processing programs are in
RegCM/PostProc
and
RegCM/PostProc-v5d.
The
RegCM/Commons
sub-directory contains templates of several files you will need when
you run the model, as well as some useful sample scripts for viewing
and manipulation your data in a several graphics programs
(GrADS and Ferret).
2. Download the surface (topography and landuse) and reanalysis
data files. Since the resolution of the surface files should be
slightly higher resolution than the model's grid resolution (50 km in
this case), we will download the 10 minute
GTOPO30 and
GLCC global
datasets. We will be using the
NNRP1
Reanalysis
global
datasets for the initial and lateral boundary conditions for our
simulation. Download the T, H, etc. files for our simulation
period, July and August
2002.
