HR: 14:30h
AN: OS13A-04    [Abstracts]
TI: Influence of Low-frequency Indonesian Throughflow Transport on Temperatures in the Indian Ocean in a Coupled Model
AU: * Potemra, J T
EM: jimp@hawaii.edu
AF: IPRC/SOEST University of Hawaii, 1680 East West Road POST Bldg. 4th Floor, Honolulu, HI 96822 United States
AU: Schneider, N
EM: nschneid@hawaii.edu
AF: IPRC/SOEST University of Hawaii, 1680 East West Road POST Bldg. 4th Floor, Honolulu, HI 96822 United States
AB: Results from a 300-year integration of the NCAR PCM coupled model are used to examine the impact of low-frequency (periods between 36 and 120 months) Indonesian throughflow (ITF) transport on Indian Ocean temperatures. Using correlation and regression analysis, we show that the correlation of anomalies of model Indian Ocean temperature and ITF transport largely reflects concurrent atmospheric forcing, rather than oceanic adjustment to changes of the throughflow. The low-frequency variations in ITF transport are small, 2 Sv, and have a minimal impact on surface temperatures. The impact on thermocline level temperatures is greater, but in this model it is limited to the outflow region between Java and Australia extending westward along a band between 10° and 15°S.
DE: 4215 Climate and interannual variability (1616, 1635, 3305, 3309, 4513)
DE: 4223 Descriptive and regional oceanography
DE: 4513 Decadal ocean variability (1616, 1635, 3305, 4215)
SC: Ocean Sciences [OS]
MN: Fall Meeting 2005