HR: 0800h
AN: OS21C-1262    [Abstracts]
TI: Zonal Variation of Meridional Overturning, Heat and Salt Fluxes in the Antarctic Zone
AU: Speer, K
EM: kspeer@ocean.fsu.edu
AF: Florida State University, Department of Oceanography 102 OSB West Call Street Florida State University, Tallahassee, FL 32306-4320 United States
AU: * Wienders, N
EM: wienders@ocean.fsu.edu
AF: Florida State University, Department of Oceanography 102 OSB West Call Street Florida State University, Tallahassee, FL 32306-4320 United States
AU: Lumpkin, R
EM: Rick.Lumpkin@noaa.gov
AF: CIMAS, University of Miami, CIMAS, University of Miami, Miami, FL 33149 United States
AU: Orsi, A
EM: aorsi@neo.tamu.edu
AF: Texas A&M University, Department of Oceanography Texas A&M University, College Station, TX 77843-3146 United States
AB: We present results from the Antarctic region of a global box inverse model, designed to resolve circulation in coarse sectors of the Antarctic Zone, distinguishing the Weddell Sea, Ross Gyre, and South Indian-Enderby Basin sectors near the continent. We address in this study the connections between the upper and deep cells of meridional circulation around Antarctica using the {\sc woce s4} section, a Weddell Sea {\sc woce} line together with a new compilation of direct current meter measurements, and other hydrographic sections extending onto the slope. The role of the system of nearly barotropic gyres around the Antarctica is explored. Climatologies do not represent the high buoyancy loss responsible for the bottom water formation in the high latitudes where data are scarce. This work aims also to give a better representation of the air-sea fluxes in the Southern Ocean, compatible with a global inverse model including the parameterization of entrainement, polynya effects and CFC derived constraints. The role of the Ekman transport and eddy fluxes in the meridional exchanges are considered.
DE: 4207 Arctic and Antarctic oceanography
DE: 4223 Descriptive and regional oceanography
DE: 4504 Air/sea interactions (0312)
DE: 4532 General circulation
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting