This study aims to explore the variation of Chlorophyll-a (Chl-a), particulate organic carbon (POC) and sea surface temperature (SST) before (pre-cyclone) and after (post-cyclone) the cyclone Amphan in the Bay of Bengal (BoB). Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua satellite level-3 data were used to assess the variability of the mentioned parameters. Chl-a concentration was observed to be significantly (t = −3.16, df ≈ 18.03, p = 0.005) high (peak 2.30 mg/m³) during the post-cyclone period compared to the pre-cyclone (0.19 mg/m³). Similarly, POC concentration was significantly (t = 3.41, df ≈ 18.06, p = 0.003) high (peak 464 mg/m³) during the post-cyclone compared to the pre-cyclone (59.40 mg/m³). Comparatively, high SST was observed during the pre-cyclone period and decreases drastically with a significant difference (t = 14, df = 33, p = 1.951e-15) after the post-cyclone period. The results indicated an increase in Chl-a (502%) and POC (240%) with a positive anomaly of 0.55 and 94.11 mg/m³, but a decrease in SST (8.52%) with a negative anomaly of 2.7°C in the BoB.

本研究旨在探索叶绿素的变化一个（Chl-一个之前（预旋风分离器）），颗粒有机碳（POC）和海表面温度（SST）和之后（后气旋）旋风Amphan在湾孟加拉 (BoB)。中分辨率成像光谱仪 (MODIS) Aqua 卫星 3 级数据用于评估上述参数的可变性。Chl-一个观察浓度为显著（吨= -3.16，DF≈18.03，p = 0.005）高（峰值2.30毫克/米³时的后气旋期间）相比，所述预旋风分离器（0.19毫克/米³）。同样，POC 浓度显着 ( t= 3.41，DF≈18.06，p = 0.003）高（峰值464毫克/米³的后气旋期间）相比，所述预旋风分离器（59.40毫克/米³）。相比之下，在气旋前时期观察到高 SST，在气旋后时期显着下降（t = 14，df = 33，p = 1.951e-15）。结果表明 Chl- a (502%) 和 POC (240%) 增加，正异常为 0.55 和 94.11 mg/m ³，但 SST (8.52%) 下降，负异常为 2.7°C鲍勃。