Towards an Operational Towards an Operational Model for the Tagus EstuaryModel for the Tagus Estuary

Rodrigo Fernandes, Ramiro Neves, Frank Rodrigo Fernandes, Ramiro Neves, Frank Braunschweig, João Silva, Susana Nunes, Madalena Braunschweig, João Silva, Susana Nunes, Madalena

Santos, Ângela Canas e João NogueiraSantos, Ângela Canas e João NogueiraPaulo Leitão, Paulo Leitão, Henrique CoelhoHenrique Coelho

OverviewOverview

Tagus estuaryTagus estuary MotivationMotivation System DesignSystem Design End user resultsEnd user results Present situationPresent situation Conclusions/Future WorkConclusions/Future Work

Tagus estuaryTagus estuary2 million people

M2 - 1 m

Area = 320 km2

Average river flow = 300 m3/s

Catchment area = 80.500 km2

MotivationMotivation

Monitoring programs (supported by Monitoring programs (supported by SANEST, SIMTEJO – 2 private SANEST, SIMTEJO – 2 private companies responsible for companies responsible for management of waste water from management of waste water from 1.5 million people);1.5 million people);

The Water Framework Directive;The Water Framework Directive; Validation in continuum of our Validation in continuum of our

numerical modeling system numerical modeling system (http://www.mohid.com)(http://www.mohid.com)

System DesignSystem Design

Real-time modelling

Atmospheric + Hydrodynamics

Real-time field dataValidation

Databases

Field Campaigns

Results Publication

(depending on target public)

MOHID System StructureMOHID System Structure

Mohid Base 1Process, IO and Function modules

Executable

Library

Interprocess Communication

TriangulatorRiver

Network

Mohid Base 2Grid and Atmosphere modules 0D

Main

BasinDelineator

DigitalTerrainCreator

MOHIDWater

Mohid Base 3Soil modules

MOHIDSoil

MOHIDLand

Global Data, Water Quality, Sediment Quality, EnterData, HDF, Functions, Time, LUD, Triangulation, Time Series, ...

Horizontal Grid,Vertical Grid, Atmosphere, Advection Diffusion, ...

Soil, Soil Properties,...

Portuguese Coast (dx = 2 km)

Discharges from rivers / WWTP’s

Tagus estuary (dx = 300 m)

Modelling Methodology Modelling Methodology (Nested Models)(Nested Models)

Atmospheric model –> http://meteo.ist.utl.pt

Global tide solutionFES95.2

Atmosphericforcing (MM5)

Cascais (dx = 50 m)

WWTP Discharge

Nazaré – Setúbal (2D)-Hydrodynamics

Tagus (2D)-Hydrodynamic-Water quality

Tagus (3D-10 layers)-Hydrodynamics

Guia (3D-10 layers)-Hydrodynamic

-Initial Dilution (Mohid Jet)+- Dispersion (Lagrangian)

Carc. - P. Arcos (2D)-Hidrodynamics(grid 301 x 105)

Carc. - P. Arcos (3D-layers))-Hydrodynamics(grid 301 x 105)

Some resultsSome results

Perfil de Salinidade - 38º25.4'N 9º15' W

0

5

10

15

20

25

30

35

40

45

33 34 35 36 37

Salinidade [psu]

Pro

fun

did

ad

e [m

]

CTD - Ipimar

Modelo - 14 dias

Perfil de Temperatura - 38º25.4'N 9º15' W

0

5

10

15

20

25

30

35

40

45

13.5 14.5 15.5 16.5

Temperatura [ºC]

Pro

fun

did

ad

e [m

]

CTD - Ipimar

Modelo - 14 dias

Automatic stations networkAutomatic stations network

Cascais

Carcavelos

Acoustic Doppler Current Meter ProfilerAutomatic atmospheric station

Buoys – automatic acquisition stations:-Velocities and pressure

- Temperature, salinity

-Clorofile, turbidity, oxygen, pH

http://www.mohid.com/tejo-ophttp://www.mohid.com/tejo-op

Conclusions/Future WorkConclusions/Future Work

The system started producing The system started producing modeling results on a daily basis in modeling results on a daily basis in March of 2003;March of 2003;

The links between models, data The links between models, data acquisition systems, data bases and acquisition systems, data bases and web applications are implemented;web applications are implemented;

Conclusions/Future WorkConclusions/Future Work

The system is workingThe system is working In the future it needs:In the future it needs:

• Implementation of data assimilation Implementation of data assimilation modulesmodules

• Daily statistical analysis of the model Daily statistical analysis of the model accuracyaccuracy

• To find other end users (ex: harbor)To find other end users (ex: harbor)