{"artifact_id":"L1-419","layer":"L1","title":"Ocean Circulation Inverse Modeling","domain":"Environmental Science","sub_domain":"Physical oceanography","physics_fingerprint":{"L_DAG":5.5,"title":"Ocean Circulation Inverse Modeling","domain":"Environmental Science","carrier":"N/A","primitives":["D.space","S.adjoint.ocean_4dvar","O.cost.ECCO_objective"],"sub_domain":"Physical oceanography","noise_model":"observation_gaussian","problem_class":"nonlinear_inverse","solution_space":"3D_ocean_state","difficulty_delta":5,"integration_axis":"ocean_volume","sensing_mechanism":"ocean_state_estimation"},"observable_profile":{"metric":"temperature_RMSE_K","regime":"Existence of the recovered 3D_ocean_state is guaranteed within the declared Omega bounds. Uniqueness holds on the measurement-supported subspace; out-of-support modes are controlled by declared priors. Stability is conditionally stable (kappa_eff ~= 10000.0); forcing_uncertainty dominates the stability cliff; the remaining mismatch parameters contribute higher-order bias terms. Observation gaussian sets the irreducible data-fidelity floor.","secondary":"salinity_RMSE_psu"},"size_tiers":{"center_spec":{"omega":{"N_Argo_profiles":3000,"N_vertical_levels":50,"assimilation_years":26,"horizontal_resolution_deg":1.0},"input_format":"measurement_only","problem_class":"nonlinear_inverse","forward_operator":"ocean_state_estimation","epsilon_fn_center":"0.3 temperature_RMSE_K"},"omega_bounds":{"N_Argo_profiles":[100,30000],"N_vertical_levels":[20,100],"assimilation_years":[1,50],"horizontal_resolution_deg":[0.1,2.0]},"epsilon_bounds":{"temperature_RMSE_K":[0.05,1.0]},"allowed_problem_classes":["nonlinear_inverse"],"allowed_omega_dimensions":["N_vertical_levels","horizontal_resolution_deg","assimilation_years","N_Argo_profiles"],"allowed_forward_operators":["ocean_state_estimation"]},"hardness_fn":{"type":"epsilon_fn","delta":5,"kappa":10000000.0,"metric":"temperature_RMSE_K"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x64489e5c8efdb930e166acd34023b5de942d4c3385db14e23129ac22e48aaceb","chain_tx_hash":"0xfb6067cf84b4003ed0daf4a9b0e6ea41b055d1b7033d95214912755206747a22","chain_block":41555238}