loading page

Monsoon-Frontal Interactions Drive Cyclone Biparjoy's Wake Recovery in the Arabian Sea
  • +3
  • Siddhant Kerhalkar,
  • Ankitha Kannad,
  • Alex Kinsella,
  • Amit Tandon,
  • Janet Sprintall,
  • Craig M. Lee
Siddhant Kerhalkar
University of Massachusetts Dartmouth
Author Profile
Ankitha Kannad
American Museum of Natural History
Author Profile
Alex Kinsella
Woods Hole Oceanographic Institution
Author Profile
Amit Tandon
University of Massachusetts Dartmouth College of Engineering

Corresponding Author:[email protected]

Author Profile
Janet Sprintall
Scripps Institution of Oceanography
Author Profile
Craig M. Lee
Applied Physics Laboratory, University of Washington
Author Profile

Abstract

Cold wakes generated by cyclones enhance productivity and impact the local air-sea interaction, paths and intensities of subsequent storms in the region. However, in-situ observations of the recovery across such wakes are rare. A cold wake in the Arabian Sea was surveyed using multiple ship-board instruments approximately 10 days after the passage of Cyclone Biparjoy in 2023. The wake, nearly 30 \unit{\km} wide, had a stronger (weaker) buoyancy gradient at its eastern (western) edge and assumed a upfront (downfront) orientation relative to the south-westerly monsoon winds. This resulted in notable asymmetry in vertical temperature, salinity and velocity structures at the edges of the wake. While the wake recovery following a cyclone is often attributed to one-dimensional diurnal heating and cooling process, these observations underscore the role of coupling of monsoon winds and the underlying three-dimensional submesoscale fronts in speeding the recovery of a slow-moving cyclone through various submesocale processes.
11 Sep 2024Submitted to ESS Open Archive
17 Sep 2024Published in ESS Open Archive