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In this page is presented a visualization tool (deliverable of task 8610) of the dispersal of numerical particles released, and constrained to float, on the sea surface. Particles are integrated using the MFSPP and MFSTEP daily hindcast eulerian velocity fields from september 1999 to July 2004. In each experiment, about 112000 particles are uniformly released on the sea surface in the entire domain and then integrated for 4 weeks using the off-line alghoritm developed by B. Blanke (Ariane) We have 60 different 28-days-long lagrangian integrations, in which particles are always released in the same initial conditions. Integrations can be choosen pointing at their corresponding sign on the left. A new browser window will be opened and you can work on it. The originating area of the particles can be choosen in one of the following methods: Point You select the center of the area moving the cursor on a Mediterranean map. Then you can choose the width of the neighbourhood using the second pop-up menu Rectangle The corners are defined or dragging the mouse on the map or writing their values in the four numeric input fields. Be aware that the larger the area the longer the time you will have to wait for the selected data beeing processed. You can visualize three different plots (Centre of Mass, Trajectories and Structure Function) You can also download the netcdf file with the selected trajectories. You need a Java Virtual Machine (JVM) and a browser with JavaScript enabled. Some browsers (like Netscape and Opera) can be downloaded already equipped with JVM, while some others (like Microsoft IE under XP) need the installation of the JVM available at java.sun.com.