oil_tracer oil_tracer::oil_tracer_cs integer, parameter integer, parameter oil_tracer::ntr_max ntr_max = 20 the maximum number of tracers in this module. register_oil_tracer logical function, public logical function, public oil_tracer::register_oil_tracer (HI, GV, US, param_file, CS, tr_Reg, restart_CS) register_oil_tracer HI HI GV GV US US param_file param_file CS CS tr_Reg tr_Reg restart_CS restart_CS Register oil tracer fields and subroutines to be used with MOM. hi A horizontal index type structure gv The ocean's vertical grid structure us A dimensional unit scaling type param_file A structure to parse for run-time parameters cs A pointer that is set to point to the control structure for this module tr_reg A pointer that is set to point to the control structure for the tracer advection and diffusion module restart_cs A pointer to the restart control structure atmos_ocean_fluxes_mod::aof_set_coupler_flux mom_error_handler::mom_error ntr_max mom_io::query_vardesc mom_tracer_registry::register_tracer mom_io::var_desc subroutine, public subroutine, public oil_tracer::initialize_oil_tracer (restart, day, G, GV, US, h, diag, OBC, CS, sponge_CSp) initialize_oil_tracer restart restart day day G G GV GV US US h h diag diag OBC OBC CS CS sponge_CSp sponge_CSp Initialize the oil tracers and set up tracer output. restart .true. if the fields have already been read from a restart file. day Time of the start of the run. g The ocean's grid structure gv The ocean's vertical grid structure us A dimensional unit scaling type h Layer thicknesses [H ~> m or kg m-2] diag A structure that is used to regulate diagnostic output. obc This open boundary condition type specifies whether, where, and what open boundary conditions are used. cs The control structure returned by a previous call to register_oil_tracer. sponge_csp Pointer to the control structure for the sponges. mom_error_handler::mom_error mom_io::query_vardesc mom_tracer_z_init::tracer_z_init subroutine, public subroutine, public oil_tracer::oil_tracer_column_physics (h_old, h_new, ea, eb, fluxes, dt, G, GV, US, CS, tv, evap_CFL_limit, minimum_forcing_depth) oil_tracer_column_physics h_old h_old h_new h_new ea ea eb eb fluxes fluxes dt dt G G GV GV US US CS CS tv tv evap_CFL_limit evap_CFL_limit minimum_forcing_depth minimum_forcing_depth Apply sources, sinks, diapycnal mixing and rising motions to the oil tracers. g The ocean's grid structure gv The ocean's vertical grid structure h_old Layer thickness before entrainment [H ~> m or kg m-2]. h_new Layer thickness after entrainment [H ~> m or kg m-2]. ea an array to which the amount of fluid entrained eb an array to which the amount of fluid entrained fluxes A structure containing pointers to thermodynamic and tracer forcing fields. Unused fields have NULL ptrs. dt The amount of time covered by this call [T ~> s] us A dimensional unit scaling type cs The control structure returned by a previous call to register_oil_tracer. tv A structure pointing to various thermodynamic variables evap_cfl_limit Limit on the fraction of the water that can be fluxed out of the top layer in a timestep [nondim] minimum_forcing_depth The smallest depth over which fluxes can be applied [H ~> m or kg m-2] mom_tracer_diabatic::applytracerboundaryfluxesinout mom_tracer_diabatic::tracer_vertdiff integer function, public integer function, public oil_tracer::oil_stock (h, stocks, G, GV, CS, names, units, stock_index) oil_stock h h stocks stocks G G GV GV CS CS names names units units stock_index stock_index Calculate the mass-weighted integral of the oil tracer stocks, returning the number of stocks it has calculated. If the stock_index is present, only the stock corresponding to that coded index is returned. g The ocean's grid structure gv The ocean's vertical grid structure h Layer thicknesses [H ~> m or kg m-2] stocks the mass-weighted integrated amount of each tracer, in kg times concentration units [kg conc]. cs The control structure returned by a previous call to register_oil_tracer. names the names of the stocks calculated. units the units of the stocks calculated. stock_index the coded index of a specific stock being sought. The number of stocks calculated here. mom_io::query_vardesc mom_tracer_flow_control::call_tracer_stocks subroutine, public subroutine, public oil_tracer::oil_tracer_surface_state (sfc_state, h, G, CS) oil_tracer_surface_state sfc_state sfc_state h h G G CS CS This subroutine extracts the surface fields from this tracer package that are to be shared with the atmosphere in coupled configurations. This particular tracer package does not report anything back to the coupler. g The ocean's grid structure. sfc_state A structure containing fields that describe the surface state of the ocean. h Layer thickness [H ~> m or kg m-2]. cs The control structure returned by a previous call to register_oil_tracer. subroutine, public subroutine, public oil_tracer::oil_tracer_end (CS) oil_tracer_end CS CS Deallocate memory associated with this tracer package. cs The control structure returned by a previous call to register_oil_tracer. A tracer package to mimic dissolved oil. By Alistair Adcroft and Robert Hallberg, 2010 *. In the midst of the Deepwater Horizon oil spill, it became evident that models were needed to predict the long-term fate of dissolved oil in the open ocean. This tracer packages mimics the transport, dilution and decay of dissolved oil plumes in the ocean. This tracer package was central to the simulations used by Adcroft et al., GRL 2010, to prove that the Deepwater Horizon spill was an important regional event, with implications for dissolved oxygen levels in the Gulf of Mexico, but not one that would directly impact the East Coast of the U.S.