Sixteen years of satellite observations are used to investigate frontogenesis, frontal variability and its impact on chlorophyll in the Arabian Sea. Large frontal probability (FP) and high chlorophyll mainly occur near the coast, e.g., near Somalia and Oman, and their values generally decrease with offshore distance. An empirical orthogonal function (EOF) is used to disentangle the spatial and temporal variability of fronts and chlorophyll. A prominent seasonal cycle of frontal activities is identified for the entire coastal region, peaking in summer when southwesterly winds prevail. The seasonality of chlorophyll is the same as that of wind and fronts near Somalia, which are largely impacted by monsoons. During summer, the southwest monsoon drives offshore Ekman transport and induces coastal upwelling off Somalia. This process transports subsurface cold water and nutrients to the surface layer, which generates fronts and enhances chlorophyll. Frontal activities can be used as an indicator to determine the chlorophyll level, at which high chlorophyll occurs when the FP exceeds 2%. A prominent dependence is also found in anomalous fields, in which strong winds can induce more frontal activities, which further introduces high chlorophyll. The impact of wind on frontogenesis can extend 800 km offshore, and a simplified linear regression is applied to quantify their relationship. The variability in wind leads that in chlorophyll, with the lags increasing with distance, indicating horizontal offshore transport and advection of coastal water. In winter, the northeast wind is favorable for downwelling; thus, the frontal activities off Somalia are greatly reduced. However, strong wind during this period induces mixing and supplies nutrients off Oman, resulting in high chlorophyll, which extends southwestward along the coast. Thus, the relationship between chlorophyll and fronts was less pronounced, especially off Oman. In the upwelling regions, fronts act as an intermediate process that connects the wind forcing and responses of ecosystems. Frontal activities in the Arabian Sea are fundamentally important to improve our understanding of monsoon-related ocean dynamics and their impact on marine ecosystems.

十六年的卫星观测被用来研究阿拉伯海的锋生，锋面变异及其对叶绿素的影响。大额叶概率（FP）和高叶绿素主要发生在海岸附近，例如，索马里和阿曼附近，并且它们的值通常随着离岸距离的增加而降低。经验正交函数（EOF）用于解散锋线和叶绿素的时空变异性。整个沿海地区的额叶活动都有明显的季节性周期，夏季盛行西南风时达到高峰。叶绿素的季节性与索马里附近的风和锋面相同，主要受季风影响。在夏季，西南季风带动了埃克曼（Ekman）海上运输，并导致索马里沿海上升。该过程将地下冷水和营养物质输送到表层，从而产生锋面并增强叶绿素。额叶活动可用作确定叶绿素水平的指标，当FP超过2％时，叶绿素水平高。在异常区域中也发现了显着的依赖性，在异常区域中，强风会诱发更多的额叶活动，从而进一步引入了高的叶绿素。风对前生的影响可以延伸到海上800公里，并应用简化的线性回归来量化它们之间的关系。风的变化性导致叶绿素的变化，其滞后性随距离的增加而增加，表明水平海上运输和沿海水流平流。冬季，东北风有利于下降。因此，大大减少了索马里沿岸的前线活动。但是，在此期间，强风引起混合并向阿曼供应营养，导致叶绿素含量高，沿海岸向西南延伸。因此，叶绿素和锋面之间的关系不太明显，尤其是在阿曼以外。在上升流地区，锋面充当连接风力和生态系统响应的中间过程。阿拉伯海的前沿活动对于增进我们对与季风有关的海洋动力学及其对海洋生态系统影响的理解至关重要。前沿作为连接风力和生态系统响应的中间过程。阿拉伯海的前沿活动对于增进我们对与季风有关的海洋动力学及其对海洋生态系统影响的理解至关重要。前沿作为连接风力和生态系统响应的中间过程。阿拉伯海的前沿活动对于增进我们对与季风有关的海洋动力学及其对海洋生态系统影响的理解至关重要。