regional ocean / atmosphere coupled modeling system for the southeastern brazilian coast maurício...

Regional Ocean / Atmosphere Coupled Modeling System for the Southeastern Brazilian Coast

Maurício da Rocha Fragoso

LAMMA – Universidade do Brasil

2003 Terrain-Following Ocean Models Users Workshop

1LAMMA

2THE SOUTHEASTERN BRAZILIAN COAST

3 MODEL COUPLING

4 THE MOREA SYSTEM

5 NEXT STEPS

Presentation Topics

> LAMMA \ UFRJwww.lamma.ufrj.br


1. LAMMA

Marine and Atmospheric Processes Modelling Laboratory

Universidade do Brasil - Rio de Janeiro

Meteorology Department

1.1. Location



1. LAMMA

Oceanographers, Meteorologists and Environmental Engineers

Graduate and Undergraduate students and researchers

Associated Researchers (Brazilian and foreign institutions)

1.2. Staff



1. LAMMA

Agrometeorology

Ocean/Atmosphere ProcessesChief Sc.: Audalio Torres Jr.

Atmospheric Pollution

Remote Sensing

Coastal and Oceanic Circulation

Pollutant Transport

Surface Waves

Atmospheric Modeling

1.3. Research Areas



1. LAMMA

1.4. Ocean/Atmosphere Processes Research

Forecasting Systems development Marine Currents Surface Waves Atmosphere

Model Coupling Global -> Regional Wave/Current /Atmosphere

Transport Models Development Oil Sewage Particles Atmosphere



1. LAMMA

Since 1996 we’ve been applying POM in the Brazilian coast, from basin to small scales

1.5. POM in LAMMA

POM implementations by LAMMA



1. LAMMA

1.5. POM in LAMMA

South Atlantic Ocean(5000 X 9500 Km)



1. LAMMA

1.5. POM in LAMMA

Ilha Grande BayRio de Janeiro, Brasil

(100 X 200 Km)



1. LAMMA

1.5. POM in LAMMA

Ilha Grande BayRio de Janeiro, Brasil

Ballast Water Dispersion Program GloBallast -IMO



1. LAMMA

1.5. POM in LAMMA

Todos os Santos BayBahia, Brasil(55 X 32 Km)



1. LAMMA

1.5. POM in LAMMA

Guanabara BayRio de Janeiro, Brasil

(25 X 32 Km)



1. LAMMA

1.5. POM in LAMMA

Amazon RiverAmazonia, Brasil

(~3 X 60 Km)



2. The Southeastern Brazilian Coast

2.1. Location




2.2. Importance

Major Brazilian Cities

Major Ports of Brazil

70% of Brazilian Oil Production




2.3. Center For Oil Spill Monitoring at Sea - CeMOM

In 2001 the Center for Oil Spil Monitoring at Sea (CeMOM) of the Brazilian Petroleum Agency was created

The mission of CeMOM is to monitor natural and accidentaloil spills in Brazilian coast





The detection of oil is made through SAR images

Once detected an oil spill trajectory forecast is performed





Hydrodynamics is provided by POM applied operationally to this region

Boundary and initial conditions prescribed by values found in literature



2. The Southeast Coast of Brazil

2.3. Meteoceanography Highlights

Brazil Current – Meanders and Eddies

Vitória-Trindade Ridge

Upwelling

Sea Breeze



2. The Southeast Coast of Brazil




3. MODEL COUPLING

3.1. Why Ocean/Atmosphere Coupled Model ?

SST has strong influence in ocean/atmosphere processes of region

Sea Breeze intensification by upwelling

Upwelling intensification by sea breeze

In order to try to capture most part of the ocean/atmosphere dynamics of the region we chose to apply a coupled model



3. MODEL COUPLING

3.2. First Attempt -RAMS/POM

How to match software engineering ?

POM as a subroutine of RAMS

Performace of the coupled system very similar to RAMS alone



4. THE MOREA SYSTEM



Coupling the GFDL Princeton Ocean Model (POM) with

PSU/NCAR Mesoscale Modeling System (MMS)

Intends to be a diagnostic and prognostic system of ocean and atmosphere, in regional scale, of the southeastern Brazilian coast

4. THE MOREA SYSTEM

4.1. POM

Grid: 10o S – 27o S / 50o W – 30o W

Spatial Resolution: 5’ (~9Km)

Grid Size: 205X240X15

Boundary and Initial Conditions provided by MOM data

SST Boundary Conditions provided by GOES/INPE



4. THE MOREA SYSTEM

4.1. POM

POM for SE Braz. coastwith inital and boundary

conditions provided by MOM data



4. THE MOREA SYSTEM

4.2.MM5

Grid: 10o S – 27o S / 50o W – 30o W

Spatial Resolution: 5’ (~9Km)

Grid Size: 205X240X23

Atmospheric Boundary and Initial Conditions provided by NCEP model data



4. THE MOREA SYSTEM

4.2.MM5

MM5 for SE Brazilwith inital and boundary

conditions provided by NCEP model data



4. THE MOREA SYSTEM

4.3. SST DATA

Simple SST images treatment for removal of cloud contaminations

48 GOES images per day

Finds pixels with clouds and go backwards in time untill free pixel is found

Gaussian interpolation for smoothing of image



4. THE MOREA SYSTEM

4.3. SST DATA



4. THE MOREA SYSTEM

4.4.COUPLING STRATEGY

POM as a subroutine of MM5

Interpolation of fields to match grids

Variables are exchanged with frequency depending on time scales

POM to MM5:SST

MM5 to POM:10 m wind, atmospheric pressure, radiation



5. NEXT STEPS

Implementation of Modular Ocean Model

MOM/CCM coupling

MM5 to WRF



Organizing Committee

Brazilian Petroleum Agency - ANP

LAMMA / LAMCE Staff

Acknowledgments



Visit our Website



www.lamma.ufrj.br

regional ocean / atmosphere coupled modeling system for the southeastern brazilian coast maurício...

Documents

lamma marine

lamma oceanographers

lamma pom implementations

lamma south atlantic

lamma guanabara bay

lamma amazon river amazonia

lamma ilha grande bay

regional ocean atmosphere