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HUANG Chuanjiang,QIAO Fangli. 2012. Effects of horizontal mixing on the upper ocean temperature in the equatorial Pacific Ocean. Acta Oceanologica Sinica, (1):16-23
Effects of horizontal mixing on the upper ocean temperature in the equatorial Pacific Ocean
Effects of horizontal mixing on the upper ocean temperature in the equatorial Pacific Ocean
Received:May 19, 2010  Revised:March 05, 2011
DOI:10.1007/s13131-012-0171-6
Key words:horizontal mixing  thermal structure  equatorial Pacific Ocean
中文关键词:  horizontal mixing  thermal structure  equatorial Pacific Ocean
基金项目:The National Natural Science Foundation of China under contract Nos 40806017 and 40730842; the National Basic Research Program (973 Program) of China under contract No. 2010CB950500.
Author NameAffiliationE-mail
HUANG Chuanjiang First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China  
QIAO Fangli First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China qiaofl@fio.org.cn 
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Abstract:
      The influence of horizontal mixing on the thermal structure of the equatorial Pacific Ocean is examined based on a sigma coordinate model.In general,the distributions of the temperature and currents simulated by the sigma coordinate model are very close to the climatology.However, the simulated thermocline along the equator is slightly diffusive so that there is a cold bias above the main thermocline,while there is a warm bias under the main thermocline.Both horizontal diffusivity and viscosity have important effects on the upper thermal structure in the equatorial Pacific Ocean,while their detailed dynamics are different.Horizontal diffusivity affects the thermal structure in the upper ocean mainly through regulating the vertical diffusivity,while the horizontal viscosity does mainly through regulating directly the circulate system.A large horizontal diffusivity or a small horizontal viscosity can be in favor of simulating a more realistically thermal structure in the equatorial Pacific Ocean.
中文摘要:
      The influence of horizontal mixing on the thermal structure of the equatorial Pacific Ocean is examined based on a sigma coordinate model.In general,the distributions of the temperature and currents simulated by the sigma coordinate model are very close to the climatology.However, the simulated thermocline along the equator is slightly diffusive so that there is a cold bias above the main thermocline,while there is a warm bias under the main thermocline.Both horizontal diffusivity and viscosity have important effects on the upper thermal structure in the equatorial Pacific Ocean,while their detailed dynamics are different.Horizontal diffusivity affects the thermal structure in the upper ocean mainly through regulating the vertical diffusivity,while the horizontal viscosity does mainly through regulating directly the circulate system.A large horizontal diffusivity or a small horizontal viscosity can be in favor of simulating a more realistically thermal structure in the equatorial Pacific Ocean.
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