【摘要】 【目的】研究2007—2017年间西北太平洋过境冷涡的11个台风导致浮游植物生长和冷涡（CCE）变化现象。【方法】统计并计算出可能影响叶绿素（Chl-a）浓度变化的因素:台风性质（强度、移动速度、强迫时间）、台风前混合层厚度（MLD）、降雨量、海表面温度（SST）、埃克曼抽吸速率（EPV）和两层约化重力模式下的涡动能（EKE）,其中EPV和EKE分别代表上升流和湍流混合强弱。【结果与结论】通过线性回归分析发现,除台风强度、SST与Chl-a浓度相关性不显著（P>0.05）,移动速度Uh、强迫时间、降雨和MLD、EPV、EKE与Chl-a均有显著相关性（P<0.05）,并建立了冷涡背景条件下的多元线性回归模型:?=0.006-0.038 x₁+0.0257x₂+0.023 8 x₃。浮游植物生长主要取决于上升流和湍流混合对营养盐的输送作用,慢而尺度大台风意味着受台风强迫时间长,足以超过地球自转调整的时间则会引起强上升流（EPV）以及湍流混合输送营养盐,促进Chl-a浓度大幅度增加,强湍流混合同时也需要降雨抑制,避免破坏浮游植物光合作用,台风前CCE区域MLD（<25m）与Chl-a呈现出正相关。更多还原

【Abstract】 【Objectives】To investigate the cold core eddy（CCE）change and phytoplankton bloom induced by 11 typhoons in northwest Pacific Ocean during the period 2007—2017. 【Method】The factors that might affect the increase of chlorophyll-a（Chl-a）concentration were calculated: typhoon properties（intensity,translation speed and forcing time）,pre-typhoon mixed layer depth（MLD）, cumulative rainfall,sea surface temperature（SST）,Ekman pumping velocity（EPV）and eddy kinetic energy（EKE） was estimated from two-layer reduced gravity model. EPV and EKE represent the strength of the upwelling and turbulent mixing,respectively. 【Result and Conclusion】Linear regression analysis shows that, except for typhoon intensity and SST（P > 0.05）, Uh, forcing time, rainfall,MLD,EPV, EKE were significantly correlated with Chl-a under the pre-existing CCE（P < 0.05）,and establish multiple linear regression model: ? = 0.006-0.038 x₁ + 0.0257 x₂+ 0.0238 x₃ was established. Phytoplankton bloom mainly depended on nutrients transport induced by the upwelling and turbulent mixing. Slow typhoons meant that the forcing time was long enough to exceed the geostrophic adjustment time and strong upwelling（EPV）and turbulent mixing greatly increased Chl-a. In the meantime,due to the fact that MLD in CCE region was generally less than 25 m,strong turbulent mixing also needed to cooperate with rainfall inhibition to avoid damaging phytoplankton photosynthesis.更多还原