Eddy-induced transport through the Luzon Strait critically affects the physical and biological properties of the South China Sea (SCS). The eddy-induced volume, heat and salt transport are comprehensively evaluated based on the South China Sea Physical Oceanic Dataset (SCSPOD) observations. To avoid the bias involved in extreme eddy events, 76 shedding anticyclonic eddies, 46 shedding cyclonic eddies, 29 locally formed anticyclonic eddies and 40 locally formed cyclonic eddies from 1993 to 2018 are taken into account and merged into composites. The total annual intrusions of volume, heat and salt contributed by all four types of eddies are 0.77 Sv, 8.78 × 10⁻⁴ PW and 7.88 × 10⁴ kg·s⁻¹, respectively. The statistical analysis shows that annual eddy-induced intrusion accounts for 11.3%–38.9% of the upper-layer Luzon Strait transport, which highlights the non-negligible role of eddies in water exchange through the Luzon Strait.

中文翻译：

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中尺度涡流向南海输送了多少热量和盐分？

通过吕宋海峡的涡流引起的运输严重影响了南海 (SCS) 的物理和生物特性。基于南海物理海洋数据集（SCSPOD）观测，综合评价涡激引起的体积、热量和盐输运。为了避免极端涡旋事件中的偏差，考虑了1993年至2018年76个脱落反气旋涡、46个脱落气旋涡、29个局部形成的反气旋涡和40个局部形成的气旋涡并合并为复合材料。四种涡旋贡献的体积、热量和盐分的年侵入总量分别为0.77 Sv、8.78 × 10 ^-4  PW和7.88 × 10 ⁴  kg·s ^-1， 分别。统计分析表明，每年由涡流引起的入侵占吕宋海峡上层输运的11.3%～38.9%，突出了涡流在吕宋海峡水交换中的不可忽视的作用。