Presentation of the tools developed (part 1) How do numerical models work? -> Alejandro ORFILA, UIB-IMEDEA Presentation of the tools developed (part.

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Presentation transcript:

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 …. 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. 19/12/2015 System (Ocean/Atmosphere/.. Dynamical Model Prediction 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 Ocean circulation Component Atmospheric Component Wave Component Glider/in- situ Drifter Radar Assimilation Sampling SYSTEM Local Authorities End Users Let me borrow (stole) this (slightly modified) slide from A. Molcard... Ocean modelling + 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 things Imagine 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 Component LocalSystemLocalSystem TOSCA System Atmospheric Forcing and Boundary Conditions TOSCA Modeling domains TOSCA Modeling system The TOSCA concept III: in 2013

Atmospheric model HIRLAM (INM) Res.: 0.16º Wave model WAM Ocean Model ROMS-Balop Res.: 1/50º Diffusion Spill model TOSCA C-drift The TOSCA concept IV: Example of implementation at WM

The TOSCA concept V. C-drift An open tool (in the wide sense), web based,multi-platform that provides the location of a spill in terms of areas of probability.

24h 48h

Thanks for attending TOSCA Final Meeting!