Presentation of the tools developed (part 1)
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Presentation of the tools developed (part 1)
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How do numerical models work?
-> Alejandro ORFILA, UIB-IMEDEA
Presentation of the tools developed (part 1)
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What is ocean modelling?
The ocean (like the atmosphere) is composed by a (newtonian) fluid that can be -quite well- studied using one some basic laws and a couple of principles….
- F=m·a- Conservation of mass, temperature (energy)
Seems feasible
….
Seems feasible
….
And forcing, and assimilation….?
BUT N-S equations are hyperbolic-type…..so we need, to set up initial conditions
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(1) Tosca Project is indebted at this point to: Copernico, Archimedes, da Vinci, Torricelli, Pascal, Bernoulli, Newton, Lagrange, Euler, Navier, Stokes and some (not many) others.
21/04/23
Sy
stem
(O
cean
/Atm
osph
ere/
..Dynamical Model
tFxGdt
xd
Pred
ictio
n
Assimilation
Basic Principles(1)Time
Integration
Exactly!!! ... Our problem deals with the lack of
And….N/S equations are nonlinear
How models work?
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6
Oil spill/SAR Model
Model
Ocean Observing System
Assimilation
Sampling
SYSTEM
Local Authorities
End Users
Let me borrow (stole) this (slightly modified) slide from A. Molcard...O
cean
mod
ellin
g
+ SSH, SST, etc… The TOSCA concept
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1.Real Time
Observing Systems
(remote and in situ)
2. Asimilation
5. End users.
3. Numerical modelling
DATOS Y OBSERVACIONES MODELOS
4. Predictions
Orfila et al, 2004
The TOSCA concept I...From modelling to observation
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The Tosca Team loves Lagrangian description of thingsImagine that you track something that is moving….
The TOSCA concept II... From Euler to Lagrange
EULER
LAGRANGE
Trajectories/paths
Fields
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Oil spill/SAR Model
Ocean circulation Component
Atmospheric Component
Wave ComponentLocal
System
TOSCASystem
Atmospheric Forcing and Boundary Conditions
TOSCA Modeling domains
TOSCA Modeling system
The TOSCA concept III: in 2013
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Atmospheric modelHIRLAM (INM)
Res.: 0.16º
Wave model
WAM
Ocean ModelROMS-BalopRes.: 1/50º
Diffusion
Spill modelTOSCA C-drift
The TOSCA concept IV: Example of implementation at WM
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The TOSCA concept V. C-drift
An open tool (in the An open tool (in the wide sense), web wide sense), web based,multi-platform based,multi-platform that provides the that provides the location of a spill in location of a spill in terms of areas of terms of areas of probability. probability.
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24h 48h
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Thanks for attendingTOSCA Final Meeting!
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