HR: 17:45h
AN: OS44A-08    [Abstracts]
TI: Sensitivity of radiative transfer on calculating mixed layer depths in ocean circulation model
AU: * Liu, C
EM: ccliu88@mail.ncku.edu.tw
AF: Department of Earth Sciences, National Cheng Kung University, No. 1, Ta-Hsueh Road, Tainan, 701 Taiwan
AU: Lin, W
EM: maplewish1@yahoo.com.tw
AF: Department of Earth Sciences, National Cheng Kung University, No. 1, Ta-Hsueh Road, Tainan, 701 Taiwan
AB: The ocean circulation model has been widely employed to simulate and forecast the oceanic environment, which enables the assessment of roles that various factors play in climate change, such as the budget of carbon dioxide and the resumption of thermohaline. Success of this approach relies on an accurate simulation of mixed layer dynamics that dominates the major physical and biogeochemical processes in the upper ocean. Sunlight is the main source of natural energy that heats the seawater and causes the vertical convection. Advances in radiative transfer modeling and theory in the past two decades have now enabled a realistic simulation of underwater light field by solving the full radiative transfer equation. This paper incorporates the radiative transfer model into the Mellor-Yamada level 2.5 one-dimensional mixed-layer model. The time series observations collected in the Tropical Ocean Global Atmosphere Coupled Ocean Atmosphere Response Experiment (TOGA COARE) from 1992 to 1993 are used to initialize and drive the model. The simulated profiles of density, salinity, temperature and velocity are then compared to the TOGA COARE observations to assess the model performance. Success of this research will clarify the role that the radiative transfer plays in calculating mixed-layer depths in ocean circulation model.
DE: 4255 Numerical modeling (0545, 0560)
DE: 4264 Ocean optics (0649)
DE: 4273 Physical and biogeochemical interactions
DE: 4532 General circulation (1218, 1222)
DE: 4572 Upper ocean and mixed layer processes
SC: Ocean Sciences [OS]
MN: Fall Meeting 2005