Ocean glider data from BoBBLE (Bay of Bengal Boundary Layer Experiment) in July 2016



As part of the Bay of Bengal Boundary Layer Experiment (BoBBLE) project, five Seagliders funded through NERC grant reference NE/L013827/1, were deployed in the southern Bay of Bengal from ORV Sindhu Sadhana during the BoBBLE cruise SSD-024. The first glider was deployed on 28 June 2016, and the final glider was recovered on 20 July 2016, giving a total deployment time of 22 days. The gliders were deployed along the west-east section at 8°N, from 85°18’E to 89°E.
During each deployment these autonomous vehicles fly in a continuous repeating saw-tooth pattern from the surface down to a maximum depth of 1000 m. They are all equipped with conductivity-temperature-depth (CTD) sensors. Additional sensors include dissolved oxygen, chlorophyll fluorescence, backscatter and photosynthetically active radiation (PAR). Three Seagliders (including one microstructure enabled glider) are from the University of East Anglia (UEA), UK glider facility. The remaining two Seagliders are from the Marine Autonomous Robotics Systems (MARS) national UK facility. All five Seagliders were deployed and piloted by UEA and associated personnel. The major objective of the BoBBLE project was to understand the east-west contrast in the upper layer characteristics of the southern Bay of Bengal and its interaction with the summer monsoon. The BoBBLE project is funded jointly by Ministry of Earth Sciences (MoES), Government of India and Natural Environmental Research Council, UK, through the “Drivers of Variability in the South Asian Monsoon” programme.

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