Jiangsu Key Laboratory of Marine Bioresources and Environment /Jiangsu Key Laboratory of Marine Bio-technology, Jiangsu Ocean University, Lianyungang, Jiangsu Province, China.
School of Marine Technology and Geomatics, Jiangsu Ocean University, Lianyungang, Jiangsu Province, China.
PLoS One. 2024 Apr 29;19(4):e0302367. doi: 10.1371/journal.pone.0302367. eCollection 2024.
The mesoscale eddy characteristics of the Mozambique Warm Current were investigated by detecting and tracking satellite altimetry data from 2010 to 2019. A total of 1,086 eddies were identified in the Mozambique Channel, comprising 509 cyclonic eddies and 577 anticyclonic eddies. The results revealed that the bay area on the northwest coast of Madagascar was the main hotspot of eddy generation, and the mean amplitude and radius of the anticyclonic eddies in the Mozambique Channel were 24.23 cm and 82.7 km, respectively, which are larger than those of the cyclonic eddies. Local wind forcing had a significant impact on the formation of mesoscale eddies in the Mozambique Channel. In winter, the wind stress in the northern and southern areas of the Mozambique Channel exhibited a strong correlation with the distribution of eddy kinetic energy (EKE), where both monsoonal winds in the north and trade winds in the south could facilitate mesoscale anticyclonic eddy formation. In addition, the variability in the number of anticyclonic and cyclonic eddies in the Mozambique Channel may have exerted a significant influence on the seasonal anomalous fluctuations in local sea surface temperatures (SSTs). This study presented a novel analysis of the mesoscale eddy characteristics in the Mozambique Channel.
利用卫星高度计数据,检测和跟踪 2010 年至 2019 年期间的资料,对莫桑比克暖流的中尺度涡特性进行了研究。在莫桑比克海峡共识别出 1086 个涡旋,其中包括 509 个气旋涡旋和 577 个反气旋涡旋。结果表明,马达加斯加西北海岸的海湾地区是涡旋产生的主要热点,莫桑比克海峡反气旋涡旋的平均振幅和半径分别为 24.23 厘米和 82.7 公里,均大于气旋涡旋。局地风强迫对莫桑比克海峡中尺度涡旋的形成有重要影响。冬季,莫桑比克海峡北部和南部的风应力与涡动能(EKE)的分布呈强相关,北部的季风和南部的信风都有利于中尺度反气旋涡旋的形成。此外,莫桑比克海峡中反气旋和气旋涡旋的数量变化可能对当地海表温度(SST)的季节性异常波动产生显著影响。本研究对莫桑比克海峡的中尺度涡旋特征进行了新的分析。