South Atlantic Workshop Open Door, Buenos Aires, Argentina Interocean Exchanges: Indian-Atlantic...

South Atlantic WorkshopOpen Door, Buenos Aires, Argentina

Interocean Exchanges: Indian-AtlanticWednesday May 9, 2007

8:30AM to 10:30AM

Gustavo Goni, NOAA/AOMLSabrina Speich, University of BrestDeirdre Byrne, University of MaineMark Wimbush, URIDoron Nof, Florida State UniversityAndreas Macrander, AWIRicardo Matano, Oregon State University

11:00AM to 12:00 Noon

Discussion

• Methodologies

• What observations are in place?

• What observations are proposed?

• What is the objective of each one of the programs? 

• What are the observations telling us?

• Can these plans be integrated to build an ocean-scale observing network/experiment?

• What validation of models has already been done in the region?

• What are the models telling us?

South Atlantic WorkshopInterocean Exchanges: Indian-Atlantic

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GFO

ICESAT

ERS-2

Envisat

TOPEX POSEIDON

JASON-1

JASON-2/OSTM

Medium accuracy SSH

High accuracy SSH ESA GMES S-3

Problemareafor

capturing mesoscale

GODAE

Altimetry Missions

Planned/Pending approval

In orbit

Approved

Source: modified from NASA/JPL

THIS GROUP MAY WANT TO WRITE A STATEMENT IN SUPPORT OF FUTURE SATELLITE ALTIMETRY MISSIONS

Altimetry: spatial coverage

IF MATCHING LOCATION OF INSTRUMENTS WITH ALTIMETRY GROUNDTRAKS KEEP IN MIND THAT GFO TYPE OF ORBIT MAY NOT BE AVAILABLE ANY LONGER.

Matching drifter-altimetry observations

2005

Sea height as a proxy for geostrophic currents

ALTIMETRY IS USEFUL FOR UPPER OCEAN CIRCULATION STUDIES WHERE CORRELATIONS ARE HIGH: GREEN AREAS

NOAA/AOMLSIO

AX18

Australia: 650 probes

France: 500 probes

Brazil: 324 probes

Noumea* : 324 probes

?

XBT transects, AOML, SIO and contributions

AN UPPER OCEAN THERMAL PANEL WILL BE FORMED

ANY RECOMMENDATIONS FROM THIS GROUP ?:MAINTAIN-REMOVE-CONTINUE LINES, XBT DEPLOYMENT SPACING, ….

# obs = 17,922

XBT data transmission into GTS - 2006

IS REAL TIME TRANSMISSION NEEDED ?

ARE DATA BEING TRANSMITTED TO DATA CENTERS ?

Altimetry and upper ocean thermal structure in the SA

ALTIMETRY IS USEFUL FOR UPPER OCEAN THERMAL STUDIES WHERE CORRELATIONS ARE HIGH: RED AREAS

rms of sea height, sea height anomaly Eddy kinetic energy

Agulhas Current geostrophic transport

Agulhas Current ring corridor

Agulhas Current SHA space-time diagram along ring corridor

Southernmost location of the Brazil Current front and separation

Southernmost location of the Brazil Current front and separation

Southernmost location of the Brazil Current front and separation1993

Southernmost location of the Brazil Current front and separation

Provost: Change in MC transport regime

Southernmost location of the Brazil Current front and separation

Southernmost location of the Brazil Current front and separation

Southernmost location of the Brazil Current front and separation

AX25

Sea height anomaly along XBT transects

XBT transects, temperature sections and sea height anomaly fields

Identifying the frontal areas

www.aoml.noaa.gov/phod/altimetry/cvar