Differential upper ocean response depicted in moored buoy observations during the pre-monsoon cyclone Viyaru

摘要

The pre-monsoon cyclone Viyaru in the Bay of Bengal during May 2013 traversed a long track from 5 degrees N to 22 degrees N over 7 days with basin-wide response, which was well captured by the time series observations of OMNI buoy network along with satellite data. The differential upper ocean characteristics and its variable response reveal that vertical mixing override horizontal advection during cyclone passage. This study provides insight into the variability in wave spectra, differential response on either side of the track and presence of cold core eddy combined with a thick barrier layer in modulating the upper ocean response.