Contrasting Upper-Ocean Heat and Salt Balances and Dynamics in SPURS 1 and 2
[12-Mar-2018] Farrar, T., Rainville, L., Plueddemann, A., Kessler, B., Lee, C., Hodges, B., Schmitt, R., Riser, S., Edson, J., Eriksen, C., and Fratantoni, D.
Presented at the SPURS-2 Analysis and Synthesis Meeting
SPURS was a two-part field campaign focused on understanding the physical processes affecting the evolution of upper-ocean salinity: SPURS-1 focused on the region of climatological maximum sea surface salinity in the subtropical North Atlantic, and SPURS-2 focused on the high-precipitation region of the northeastern tropical Pacific Inter-tropical Convergence Zone. An upper-ocean salinity budget provides a useful framework for guiding progress toward our ultimate goal of understanding how different physical processes affect upper-ocean salinity. The SPURS-1 and SPURS-2 measurement programs included heavily instrumented air-sea interaction moorings, which allows accurate estimates of the surface fluxes, and a dense array of measurements from moorings, Argo floats, gliders, and satellites. These data are used to estimate terms in the surface-layer salinity and heat budgets during the SPURS campaigns, and we use the budget to guide discussion of how ocean dynamics affect sea surface salinity.