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建立一个二层非线性原始方程海洋模式,用以研究海洋对静止和以不同移速移动的热带气旋(TC)的响应。数值试验结果表明,海洋对静止TC的响应,具有不对称性;在TC中心处,抽吸使混合层(ML)变浅,在TC最大风速半径处,大风夹卷明显使ML加深和海表温(SST)下降;海洋对移动TC的响应,具有右偏性,且随移速加快而加剧。ML深度和SST的变化对TC移速十分敏感,而海流则不同。
A two-layer non-linear oceanic model of the original equation was established to study the oceans response to both stationary and tropical cyclones (TCs) moving at different rates of travel. The results of numerical experiments show that the ocean response to stationary TC is asymmetric. At the center of TC, aspiration decreases the ML, and at the TC maximum wind speed, The temperature (SST) decreased; the response of the ocean to moving TC was right-biased and aggravated with the increase of moving velocity. ML depth and SST changes are very sensitive to TC velocity, while the current is different.