Characteristics of mesoscale eddies in the Mozambique Channel

PLoS One. 2024 Apr 29;19(4):e0302367. doi: 10.1371/journal.pone.0302367. eCollection 2024.

Abstract

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cyclonic Storms
  • Madagascar
  • Mozambique
  • Seasons*
  • Wind*

Grants and funding

This work was funded by the Priority Academic Program Development of Jiangsu Higher Educa-tion Institutions (PAPD), Postgraduate Research & Practice Innovation Program of Jiangsu Ocean University(Grants numbers KYCX2022-29), Postgraduate Research and Practice Innovation Program of Jiangsu Province(Grants no. SJCX23_1818) and National Natural Science Foundation of China (Grants no. 41976187).