HR: 1300h
AN: OS52D-18    [PDF]
TI: A Process Study for Equatorial Vertical Exchange: Pacific Upwelling and Mixing Physics (PUMP)
AU: * Kessler, W S
EM: William.S.Kessler@noaa.gov
AF: Pacific Marine Environmental Laboratory / NOAA, 7600 Sand Point Way NE, Seattle, WA 98115 United States
AU: Lien, R
EM: lien@apl.washington.edu
AF: Applied Physics Laboratory, University of Washington, 1013 NE 40th St, Seattle, WA 98105 United States
AU: Cronin, M F
EM: Meghan.F.Cronin@noaa.gov
AF: Pacific Marine Environmental Laboratory / NOAA, 7600 Sand Point Way NE, Seattle, WA 98115 United States
AB: PUMP is a process study to observe the complex of mechanisms that connect the thermocline to the surface in the equatorial Pacific cold tongue. The premises of PUMP are 1) we are coming to the point when models can exploit realistic mixing, and 2) observations to date have only measured aspects of the cold tongue system (divergence, mixing profiles) in isolation, which has not yet provided useful guidance to models. What is necessary is to place the turbulence observations in their full context, including the three-dimensional circulation, allowing diagnosis of the complete set of processes for a limited period of time, and thereby sparking development of model parameterizations for vertical exchanges. PUMP intends to describe the transition of the surface boundary layer from the Ekman-geostrophic regime poleward of $\pm$5$^\circ$ latitude to the divergent equatorial regime sufficiently well to serve as a challenge to models.
UR: http://www.pmel.noaa.gov/~kessler/clivar/pump.html
DE: 4215 Climate and interannual variability (3309)
DE: 4231 Equatorial oceanography
DE: 4279 Upwelling and convergences
DE: 4524 Fine structure and microstructure
DE: 4568 Turbulence, diffusion, and mixing processes
SC: Ocean Sciences [OS]
MN: 2004 Ocean Sciences Meeting