Situ observations were conducted by biogeochemical buoys (BGC buoys) to discover the physicochemical processes during super typhoon Lekima's passage in Zhejiang coastline, helping us gain deep insights into the responses of the sea surface on the coastal zones throughout the whole typhoon's lifetime, especially during typhoon's landing. The results show that precipitation and terrestrial inputs induced by Lekima led to the hyposalinity, demonstrated by the sharp reduction of surface seawater salinity in estuary. Phosphate concentration reached its highest point 2–4 days after the typhoon's passage, with the concentrations increasing two folds to values between 20 μg L⁻¹ and 91 μgL⁻¹. High chlorophyll a (Chl-a) value (4.9 μg L⁻¹) appeared shortly after the Lekima's arrival, accompanied by algal bloom. Chl-a correlation with other physicochemical parameters showed significant variation in the typhoon's different stages of development, which have unique factors of influence. The lower N/P ratio in the coastal zones play roles in Chl-a concentration and phytoplankton bloom and the optimal N/P ratio for Prorocentrum donghaiense and Skeletonema costatum is 25 and 15 respectively.

生物地球化学浮标（BGC浮标）进行原位观测，发现了超强台风利奇马经过浙江海岸线的物理化学过程，帮助我们深入了解台风整个生命周期，特别是台风期间沿海地区海面的响应。降落。结果表明，利奇马引起的降水和陆地输入导致了低盐度，这表现为河口地表海水盐度的急剧下降。磷酸盐浓度在台风经过 2-4 天后达到最高点，浓度增加了两倍，达到 20 μg L ^-1和 91 μgL ^-1之间的值。高叶绿素a (Chl-a) 值（4.9 μg L ^-1) 出现在利奇玛号到来后不久，伴随着藻华。Chl-a与其他理化参数的相关性表明台风不同发展阶段存在显着差异，具有独特的影响因素。沿海地区较低的 N/P 比在 Chl-a 浓度和浮游植物大量繁殖中起作用，东海原藻和中肋骨藻的最佳 N/P 比分别为 25 和 15。