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20世纪90年代后期南海上层海温变化趋势的转折 总被引：1，自引：1，他引：0
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. 相似文献
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基于混合坐标海洋模型（HYbrid coordinate ocean model，HYCOM）再分析数据研究浙江近海对2015年第9号台风"灿鸿"的动力学和热力学响应，并利用卫星遥感的海表面温度（sea surface temperature，SST）数据验证了HYCOM再分析数据的合理性。结果显示，"灿鸿"在浙江近海引起了较强的近惯性运动，最大流速约为0.4 m/s。台风"灿鸿"引起的近惯性能量在300 m以深海域较强，其衰减的e折时间尺度约为4-12 d。"灿鸿"所引起的SST变化约-3--1℃，降温过程持续约7 d；同时在近岸海底引起了增温，最大温度变化幅度为10℃左右，持续时间也约为7 d（浙江近岸）。经过分析，本文认为近岸海底的增温是由台风引起的次级环流和台风引起的强混合共同导致的。 相似文献