HR: 11:00h
AN: OS52A-03    [Abstracts]
TI: A methodology for the turbulent kinetic energy model to determining skin sea surface temperature in climate study
AU: * Tu, C
EM: cytu@horse.ev.nchu.edu.tw
AF: Dept. Environmental Engineering, Nat'l Chung-Hsing University, 250 Kuo-Kwang Rd., Taichung, 402 Taiwan
AU: Tsuang, B
EM: tsuang@nchu.edu.tw
AF: Dept. Environmental Engineering, Nat'l Chung-Hsing University, 250 Kuo-Kwang Rd., Taichung, 402 Taiwan
AB: We presented an Effective Thickness Parameterization (ETP) and showed how it can be used in a Turbulence Kinetic Energy (TKE) type ocean model to determine Skin Sea Surface Temperature (SST) and to account for the warm-layer effect as well as the surface-cooling effect. Estimating the thickness of the conductive sublayer is according to Sauders (1967) and the proportionality constant in the Sauders formulation is according to Artale et al. (2002). Our simulation shows that determination of temperatures at the skin layer and at an uppermost layer with 1-mm thickness is found sufficient to reproduce the cool-skin effect. A vertical resolution of 1-2 m is needed to keep track of the absorption of solar radiation in the top few meters and to reproduce the warm-layer effect. Data from research vessel Vickers taken during the TOGA COARE program are used for a case study, in which the observed cool-skin effect and the warm-layer effect are reproduced using the above discretizations. Our results show that a cool skin constantly increases atmospheric heat input to the ocean by ~ 8 W m-2, and that a warm layer decreases it by ~ 1 W m-2.
DE: 4504 Air/sea interactions (0312)
DE: 4568 Turbulence, diffusion, and mixing processes
DE: 4572 Upper ocean processes
SC: Ocean Sciences [OS]
MN: 2005 Joint Assembly