Grand Lagrangian Deployment (GLAD) CODE-style and flat drifter trajectories (5-min interpolation, no filtering), northern Gulf of Mexico near DeSoto Canyon, July-October 2012

297 near-surface CODE-type ocean drifters (drogued at a depth of one meter) tracked in real-time using SPOT GPS units, were launched in the northern Gulf of Mexico near DeSoto Canyon in July 2012 as part of the CARTHE Grand Lagrangian Deployment (GLAD) experiment. Most of these drifters were launched in nested triplets (separated by roughly 100 m, resp. 500 m, at launch) in an attempt to measure multi-scale near surface dispersion. No temperature or salinity sensors were attached to these drifters. Positions are interpolated to uniform 5 minute intervals starting on whole hours over the period July 20 through October 22, 2012. Velocities are computed using the spline coefficients. 12 of the drifters were prematurely abducted and subsequently re-released. Their trajectories have been split into two segments, with different drifter numbers assigned to each. A companion dataset is included, from 10 surface drifters consisting of GPS-equipped and weighted otter boxes, whose trajectories were processed the same way. These were released alongside some of the CODE-style drifters. This dataset was created by the Consortium for Advanced Research on Transport of Hydrocarbon in the Environment (CARTHE). This research was made possible by a grant from BP/The Gulf of Mexico Research Initiative.