"Drop-a-Drifter" Water Trajectories for SPURS2

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hycom sss GPM precip

Drop-a-Drifter SPURS2 Water Trajectories: The movement of a particle of water (the trajectory) can be computed at a depth of 15 meters during the past three days and seven days into the future. All times, including the release hour, are UTC. The trajectories can be used to indicate where any floating substance (oil etc.) or object (buoy etc.) will go. Choose a starting point for a trajectory by "dropping" a virtual drifter marker inside the red box on the map. Virtual drifter locations can also be entered using the exact latitude (from 0 to 20N) and longitude (from -140 to -110) values. A maximum number of ten (10) virtual drifters can be released each time, mostly due to the computational considerations. The drifter path will be indicated by a colored line based on the dates selected. Trajectories are computed using velocity fields produced by the global data-assimilative hybrid isopycnal-sigma-pressure (generalized) coordinate ocean model (called HYbrid Coordinate Ocean Model or HYCOM) with a spatial resolution of 1/12o (8 km). The HYCOM data is obtained from: http://tds.hycom.org/thredds/catalog/GLBu0.08/expt_91.1/forecasts/catalog.html Note: although several data sources are incorporated in the HYCOM data assimilation, the performance of drifter trajectories has not yet been evaluated with observational data.

Computer support is provided by Remote Sensing Solutions, Inc. and Joint Institute for Regional Earth System Science and Engineering at UCLA. For questions or additional information, please contact the Principal Investigator, Dr. Yi Chao at ychao@jifresse.ucla.edu.