Presentation of the tools developed (part 1)
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description
Presentation of the tools developed (part 1). Presentation of the tools developed (part 1). How do numerical models work? -> Alejandro ORFILA , UIB-IMEDEA. What is ocean modelling ?. The ocean (like the atmosphere) is composed by a ( newtonian ) fluid that - PowerPoint PPT Presentation
Transcript of Presentation of the tools developed (part 1)
Presentation of the tools developed (part 1)
How do numerical models work?
-> Alejandro ORFILA, UIB-IMEDEA
Presentation of the tools developed (part 1)
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
(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?
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
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
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
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
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
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.
24h 48h
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