Abstract:
The data set is developed as a part of the simulations that carried out for the Hindcast of Deepwater Horizon oilspill from 2010-04-22 to 2010-07-14 in the Gulf of Mexico. Two main sets of model simulation results included in the data are from the two near-field plume models in the Texas A&M Oilspill Calculator (TAMOC) that can be used to simulate under water oil and gas blowout plumes, namely the Stratified Plume Model (SPM) and the Bent Plume Model (BPM). Stratified plume model does not account for the cross flow velocities in the ambient while the bent plume model does consider the presence of cross currents in the calculations. Simulations are done hourly from 2010-04-22 to 2010-07-14. Model input data are saved in “Input” folder in netcdf and .csv formats, and model results are saved in “Output” folder in netcdf format. The tools for reading and post processing of model results are included in the TAMOC modeling suite, which can be freely downloaded from https://github.com/socolofs/tamoc. Release fluid composition and parameters needed as input to the model are saved in the .csv files according to the format needed in the TAMOC modeling suite to read the data. Ambient data used are extracted from SABGOM ocean circulation model simulations for the Gulf of Mexico and saved in the folder Input/SABGOM according to the format used as input to TAMOC. Each ambient data file is corresponding to each hour of simulation starting from 2010-04-22, 00th hour (SABGOM_4778611200.0) to 2010-07-14, 23rd hour (SABGOM_4778611200.0). The model results of SPM are saved as “SPM_DWH_M_D_H_Loc_disp.nc” and for BPM it is “BPM_DWH_M_D_H_loc_disp.nc” where M- Month, D – Day, H – Hour, Loc - Location (Loc = 1 – Plume leaked at the kink before the riser cut off on 2010-06-03, Loc = 2 – Plume at the end of the fallen riser, Loc = 3 – Plume at the well head after the riser cut off on 2010-06-03) and if disp = 1 Plume is treated with dispersant and if disp = 0 plume is not treated with dispersants.
Data Parameters and Units:
The model result parameters/units are saved along with the model variables in the netcdf file. The following is a list of all variables and parameters (in the order of: TAMOC value, Object, Description, Datatype, Unit of measurement) that are found within the output nedcdf files. beta: insoluble particle parameter, Thermal expansion coefficient, float, K^(-1); co: insoluble particle parameter, Isothermal compressibility coefficient, float, Pa^(-1); delta_z: attribute of model parameter, Maximum step size to take in the storage of the simulation solution, float, m; fdis: soluble particle parameter, Fraction of initial mass remaining as total dissolution, float, (–); fp_type: soluble or insoluble particle parameter, Defines the fluid type (0 = gas, 1 = liquid) that is expected to be contained in the particle. This is needed because the heat transfer equations are different for gas and liquid. The default value is 1 and 2 = solid, integer, N/A; gamma: insoluble particle parameter, API gravity (used to measure how heavy or light a petroleum liquid is compared to water), float, deg API: iscompressible: soluble or insoluble particle parameter, True or False -- selects the equation of state for density. True uses the API gravity, isothermal compression and isobaric thermal expansion; whereas, False returns the constant density specified at instantiation, logical, N/A; isfluid: soluble or insoluble particle parameter, True or False -- states whether or not the inert particle could have a mobile interface. For example, choose True for oil and False for sand, logical, N/A; issoluble: soluble or insoluble particle parameter, True or False -- indicates whether the object contents are soluble or insoluble, logical, N/A; K: particle parameter, Mass transfer reduction factor, float, (–); K_T: particle parameter, Heat transfer reduction factor, float, (–); lambda_1: particle parameter, Spreading rate of the dispersed phase in a plume, float, (–): m0: particle parameter, Initial masses of the components of one particle in the dbm_particle object, ndarray, kg; maxit: attrribute of model parameter, Maximum number of iterations allowed in the interative solution, float, N/A; nb0: particle parameter, Initial number flux of particles at the release, float, s^(-1); nbe: particle parameter, Number of particles associated with a Lagrangian element. This number with the mass per particle sets the total mass of particles inside the Lagrangian element at any given time, float, (#); P: particle parameter, Ambient pressure at the release point, float, (Pa); particle_type: file parameter, The particle type is either 0: SingleParticle, 1:PlumeParticle or 2: bent_plume_model.Particle, integer, N/A; R: attrribute of model parameter, Radius of the release point, float, m; rho_p: soluble or insoluble particle parameter, Particle density, float, kg/m^3; Sa: particle parameter, Local salinity surrounding the particle, float, psu; T0: particle parameter, Initial temperature of the of dbm particle object, float, K; Toler: attrribute of model parameter, Relative error sufficient to consider the iterative solution to have converged, float, N/A; t_hyd: particle parameter, Hydrate film formation time. Mass transfer is computed by clean bubble methods for t less than t_hyd and by dirty bubble methods thereafter, float, s; yi: attrribute of model parameter, Array of state space values computed for the inner plume solution, ndarray, N/A; yo: attrribute of model parameter, Array of state space values computed for the outer plume solution, ndarray, N/A; z: attrribute of model parameter, Current value of the depth, float, m;
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