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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
98 99 00 01 02 03 04 05 06 07 08 09 10 11 12
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
