South Atlantic Workshop Open Door, Buenos Aires, Argentina Interocean Exchanges: Indian-Atlantic Wednesday May 9, 2007 8:30AM to 10:30AM Gustavo Goni,

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Presentation transcript:

South Atlantic Workshop Open Door, Buenos Aires, Argentina Interocean Exchanges: Indian-Atlantic Wednesday May 9, :30AM to 10:30AM Gustavo Goni, NOAA/AOML Sabrina Speich, University of Brest Deirdre Byrne, University of Maine Mark Wimbush, URI Doron Nof, Florida State University Andreas Macrander, AWI Ricardo 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 Workshop Interocean Exchanges: Indian-Atlantic

GFO ICESAT ERS-2 Envisat TOPEX POSEIDON JASON-1 JASON-2/OSTM Medium accuracy SSH High accuracy SSH ESA GMES S-3 Problem area for 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/AOML SIO 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 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 anomalyEddy 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

1993

Southernmost location of the Brazil Current front and separation Provost: Change in MC transport regime

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