African Conference on Research in Computer Science and Applied Mathematics (CARI2012)
| When |
Oct 13, 2012 09:00 AM
to
Oct 16, 2012 05:00 PM |
|---|---|
| Where | Algier, Algeria |
| Add event to calendar |
 vCal iCal
|
REGISTRATION DEADLINE: 15th of September (English/French)
Abstract:
The ocean and the atmosphere, coupled with other components (continent,
and ice) are building blocks of the earth system. Recent events have
raised questions on social and economic implications of anthropic
alterations of the earth system, i.e. both its long-term evolution and
extreme events. A better understanding of these systems is a key
ingredient for improving our prediction of such implications. In
particular, the coastal zone is now subject to extensive surveys as this
interface between the continent and the ocean is identified as a prime
area for environmental impacts. A strong knowledge of coastal and marine
submesoscale dynamics is required in various environmental topics, e.g.
marine biogeochemistry, marine pollution, fisheries, coastal erosion,
regional climate. The same applies to the atmosphere component where
high resolution weather forecasts are required for several applications:
extreme events, agriculture, air pollution, forestry ? Numerical models
are essential tools to understand key processes, simulate and forecast
events of various space and time scales. The continuous increase of
computing power and the availability of global forcing products allows
the production on limited areas of forecasts on nowadays personal computers.
The objective of the tutorial is to give the attendees sufficient
knowledge to be able to run limited area marine or weather forecasts
using state of the art realistic numerical models. The tutorial starts
with an overview of the set of equations and underlying physics of the
ocean and atmosphere systems. The usual physical simplifications used to
make the computational cost affordable are also addressed (e.g.
hydrostatic/non hydrostatic, Boussinesq, compressibility). The most
important numerical choices (e.g. horizontal grid and vertical
coordinates systems, time stepping and advection-diffusion algorithms,
separation in slow and fast modes) are introduced in the light of the
underlying physic. The attendees will then be able to exercise on
realistic experiments using the Regional Ocean Modeling system (ROMS)
and the Weather Research and Forecasting
model (WRF). Both models have a set of pre- and post-processing tools
that allows the fast set-up of a numerical simulation and the analysis
of their outputs.
Programme (Details):
Day1: Presentation of the equations of numerical ocean and weather
models and their numerical discretization, forcings.
Day 2: Practice: Ocean Modeling using the Regional Ocean Modeling System
(ROMS)
Day 3: Practice: Weather Modeling using the Weather Research and
Forecasting model (WRF)
During day 2 and day 3, the attendees will learn how to prepare a
realistic configuration (preparation of the domain configurations and
acquirement of external forcings data), how to run the models, and how
to diagnose its outputs.
Open source software:
WRF (http://www.wrf-model.org ), ROMS ( http://www.romsagrif.org ),
Fortran Compiler (Gnu Fortran), Octave
