HR: 0800h
AN: OS21C-1272    [Abstracts]
TI: Heat Budget estimation of the Eastern Arabian Sea using Simple Ocean Data Assimilation Techniques
AU: * Fernandez, D R
EM: dominicf@darya.nio.org
AF: National Institute of Oceanography, Physical Oceanography Division, Dona Paula, Goa - 403004, Panjim, Goa 403004 India
AU: Shenoi, S S
EM: shenoi@darya.nio.org
AF: National Institute of Oceanography, Physical Oceanography Division, Dona Paula, Goa - 403004, Panjim, Goa 403004 India
AU: Shankar, D
EM: shankar@darya.nio.org
AF: National Institute of Oceanography, Physical Oceanography Division, Dona Paula, Goa - 403004, Panjim, Goa 403004 India
AB: Estimation of the monthly climatological heat budget of the Eastern Arabian Sea (6øN to 24øN and 68øE to 78øE ) is carried out for the top 50 m using oceanographic data from Simple Ocean Data Assimilation (SODA) model output and atmospheric surface heating fluxes over the air sea interface using Southampton Oceanographic Centre Climatology (SOC) for the periods 1990 ? 2001. We address the various roles played by the net surface heat flux and the local and remote ocean dynamics of the near surface heat budget in the eastern Arabian sea. A rough balance between the rate of change of heat and the fluxes of heat across the regional boundaries owing to advective and non advective processes is observed. During the summer monsoon oceanic processes play a major role in removing heat from the eastern Arabian Sea region of which horizontal advection is a major contributor. During the (NE) winter monsoon excess heat is downwelled by vertical velocity components (SODA) thus cooling the control volume. The accuracy of the vertical components of velocities is tested in balancing the heat budget. At 100 m depth a better closure is attained when vertical velocities components derived from mass balance were used in the heat equation. From the analysis of these datasets, this paper shows the ability of these datasets for estimating the heat budget of the eastern Arabian Sea.
DE: 4500 OCEANOGRAPHY: PHYSICAL
DE: 4504 Air/sea interactions (0312)
DE: 4568 Turbulence, diffusion, and mixing processes
DE: 4572 Upper ocean processes
DE: 4599 General or miscellaneous
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting