Long-Term Oceanographic Measurements in Brazil: Characteristics

and Perspectives

2012 ROMS/TOMS User Workshop

Rogério Candella IEAPM

- PIRATA Program (Pilot Research Moored Array in the Tropical Atlantic)

- About 16 buoys in the equatorial region

- In the southeastern Atlantic portion - Long time series only for sea level- One long time series for sea temperature (not collected for scientific purposes)

Long-Term Oceanographic MeasurementsLong-Term Oceanographic Measurements

Temperature of water used for cooling machinery of the Companhia Nacional de Álcalis, Arraial do Cabo, RJ

- Oldest station still in activity – Cananéia/SP since 1954- Longest continuous series – Cananéia/SP from 1954 to 1995- Improvement data quality → Progam GLOSS-Brasil

Sea level measurementsSea level measurements

- Currently, 17 tide stations, 11 from other institutions than the Brazilian Navy.

Ilha Fiscal-From 1955 to 2007 → analogical gauge-From 2007 to now → radar based technology

Ilha Fiscal - 2010

Ponta do Céu – AP

-Amazon River-Radar based gauge

Tide Gauge – Arraial do Cabo, RJ

Low Frequency Meteorological Effects – May, 2001

Digital Gauges

- Ultrasonic

- Radar

High Frequency Meteorological Effect – Meteotsunami September 2002

PNBOIA (Oceanographic Buoy National Plan)

- Four (three) fixed buoys operating.- Free access to datahttp://www.mar.mil.br/dhn/chm/meteo/prev/dados/dados.htm

- Two more buoys deployed (northeast coast).- Two more buoys to be launched in the next year.- Program in a very beginning stage.- Problems with depredation and logistics.

06 tide gauges

59 drifting buoys

08 ATLAS buoys

03 Axys 3M buoys

DBCP Data Buoy Cooperation Panel

ISABP International South Atlantic Buoy Program

GLOSS – Global Sea Level Observing System

Dirfting Buoy

Moored Buoy 3M

Moored Buoy ATLAS

GTMBA - Global Tropical Moored Buoy Array

GOSS– Sistema Global de Observação dos Oceanos

SIODOCEnvironmental Data Collection for the

Defense Project- Deployment of a

meteo-oceanographic buoy fully equipped.

- 60-m depth, in the upwelling area of Arraial do Cabo.

- Free access to data

ConclusionsConclusions-Very few long-time oceanographic series in the Western South Atlantic, turning unfeasible comparisons with climatological results from models.-Some new attempts to fill this gap, but still in early stages.-Main problems related to logistics, depredation and maintenance.-Results can be used to indicate anomalous events, which could be explained in other spatial scales, by numerical modeling.

Thank you for your attention

rcandella@gmail.com