Netcdf Python Particle tracker with Multiprocessor and Animations Runs with AMD Ryzen 7 2700x using all 8 processors. Does particle tracking in Chesapeake Bay using NOAA netcdf files.

Missing from the project are those data files. They may be downloaded with the crontab tab job, whose files are included in the CRONTAB directory. The ROMS_REGULAR are ROMS runs which have been meshed to fixed box mesh for simplicity and are not good for actual modeling work. But are only hourly files I can find. There are six hourly real ROMS files. Will make sure the programme will work with them for when I do find some proper hourly files.

python3 main_mesh.py will run the main program. Options are read from an input file Particle_Options.txt from file_reader.py Need to specify start time, end time, directory with files. Either select a small batch of particles ByHand or generates a box of particles in lonlatbox Specify the lonlatbox and numx numy of particles. 200, 100 have worked nicely and runs in about two minutes for five days of simulation. Output is an animation of particles moving, either on screen or the GRAPHrecord=True generates ches.mp4

Options:
s_rho = 0 Top layer of particles ModelType="ROMS_REGULAR" datestart=2019,2,1,1,0 dateend= 2019,2,7,12,0 dt=120. Time step, seconds dpsave=1800. Time step to record dirroot = "/media/tom/MyBookAllLinux/NOSnetcdf" ByHand == True Interactive screen position of particles else ==False lonlatbox=-76.4,36.8,-75.9,37.5 # Big Box near Mouth nxny = 100,200 or maybe 10,20 for faster runs GRAPHrecord = False plot graphic animation to screen else ==True record graphic animation to mp4 file.