Validation of buoy mounted downward looking ADCP using subsurface moored upward looking ADCP

Current profiles measured from the downward looking ADCP fixed in the buoy mooring and upward looking ADCP fixed in subsurface mooring are compared for an observation period of seven months. This study was under taken to validate the data collected from the buoy mounted ADCP by analysing the measured data in temporal and as well as spatial in depth, the study revealed that the current velocity measured at 100 meter by upward and downward looking ADCP show correlation >0.7. Higher correlation is observed for meridional component compared to the zonal component. few deviations in the data which can be attributed to distance between the moorings (5.6 km), differences in sampling duration (3-minute for upward looking ADCP and 60 minute for downward looking ADCP), and the buoy drift.