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Cross-Equatorial Flow

Nick Bond gave an overview of the C-130 95 W missions and indicated that, somewhat contrary to expectations, lots of variability existed in the flow even at the equator, in cloudiness, wind shear, turbulence kinetic energy, etc.

Simon de Szoeke noted that the TAO temperature at 5 N appeared to be too warm by about 1 K.

Steve Esbensen indicated that there was a strong correlation between surface stress and sea surface temperature (SST) near the SST front. Furthermore, the passage of easterly waves can be seen in the meridional wind at the Galápagos.

Chris Bretherton's large eddy simulations represent the cross-equatorial flow very well. NCEP reanalysis doesn't adequately capture the characteristics of this flow.

Mike McGauley presented latitude-height cross-sections of the thermodynamic fields and flows along 95 W from C-130 dropsondes.

Chris Fairall reported that the SST decreased by about 1 K during the Ron Brown's residence at 10 N. The EPIC region was found to have colder, drier air than the western equatorial Pacific or the Indian monsoon region.

Meghan Cronin indicated that ocean current speeds are a substantial fraction of the wind speed, with corresponding effects on fluxes. Maximum fresh water occurred at 3 N, maximum rainfall at 8 N. Extra maintenance costs induced by vandalism of TAO moorings may result in early shutdown of the EPIC components of the array. High time resolution of TAO data will be available in a few months.


next up previous
Next: Ocean Observations Up: 25 March Previous: ITCZ
D. J. Raymond 2002-05-13