A shift in the upper-ocean temperature trends in the South China Sea since the late 1990s  

作　　者：WANG Zhaoyun ZHAI Fangguo LI Peiliang 

机构地区：[1]College of Oceanic and Atmospheric Sciences, Ocean University of China

出　　处：《Acta Oceanologica Sinica》2016年第11期44-51,共8页海洋学报（英文版）

基　　金：The National Natural Science Foundation of China under contract Nos 41476002 and 41506008;the National Basic Research Program(973 Program)of China under contract No.2012CB955600

摘　　要：In this paper, the interdecadal variability of upper-ocean temperature in the South China Sea（SCS） is investigated based on several objectively analyzed data sets and two reanalysis data sets. The trends of the SCS sea surface temperature（SST） have changed from warming to cooling since the late 1990 s. A heat budget analysis suggests that the warming of the surface mixed layer during 1984-1999 is primarily attributed to the horizontal heat advection and the decrease of upward long wave radiation, with the net surface heat flux playing a damping role due to the increase of upward latent and sensible heat fluxes. On the other hand, the cooling of the surface mixed layer during 2000-2009 is broadly controlled by net surface heat flux, with the radiation flux playing the dominant role. A possible mechanism is explored that the variation of a sea level pressure（SLP） over the North Pacific Ocean may change the prevailing winds over the SCS, which contributes to the change of the SST in the SCS through the horizontal heat advection and heat fluxes.In this paper, the interdecadal variability of upper-ocean temperature in the South China Sea（SCS） is investigated based on several objectively analyzed data sets and two reanalysis data sets. The trends of the SCS sea surface temperature（SST） have changed from warming to cooling since the late 1990 s. A heat budget analysis suggests that the warming of the surface mixed layer during 1984-1999 is primarily attributed to the horizontal heat advection and the decrease of upward long wave radiation, with the net surface heat flux playing a damping role due to the increase of upward latent and sensible heat fluxes. On the other hand, the cooling of the surface mixed layer during 2000-2009 is broadly controlled by net surface heat flux, with the radiation flux playing the dominant role. A possible mechanism is explored that the variation of a sea level pressure（SLP） over the North Pacific Ocean may change the prevailing winds over the SCS, which contributes to the change of the SST in the SCS through the horizontal heat advection and heat fluxes.

关 键 词：South China Sea sea surface temperature trend interdecadal variability heat budget 

分 类 号：P731.11[天文地球—海洋科学]