Name:TEPHRA
Description:Tephra Model
Abstract:TEPHRA is a two dimensional advection-diffusion model implemented by Bonadonna et al. [2005] that describes the sedimentation process of particles from volcanic plumes.<br>
TEPHRA includes grain-size dependent diffusion law, particle density variation, a stratified atmosphere, and settling velocities function of Reynold’s number.<br>
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It is written in C code using MPI commands for parallel computation.
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Daily meteorological data provided by Aeronautical Military and volcanological parameters are processed by TEPHRA to simulate two different eruptive scenarios of Mt. Etna (corresponding to 1998 and 2002-03 Etna eruptions). The model outputs are plotted on maps and transferred to Civil Protection early in the morning.
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Thanks to its parallel code Tehpra Model was ported to GRID infrastructure. The job submission process runs automatically through the use of a batch script that: 1)retrieves different input files and composes JDLs; 2)submits the job to GRID; 3)checks the status; 4)retrieves the output. Previous steps are made daily for many simulations (circa 17).
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In order to obtain the outputs early in the morning we worked to minimize job-scheduling time by using special high-priority queue (Emergency Queue).
<br><br><b>Software requirements</b><br>Unix Operating System
<br>Gnu C compiler, Gcc
<br>HP GarbageC Library
<br>Message Passing Interface (MPI)
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Created:2010-05-01
Last updated:2010-05-01
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