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Lightning Prediction in the Tehran Region Using the WRF Model With Multiple Physical Parameterizations and an Ensemble Approach
Published 2025-06-01“…Comparisons with ENTLN data showed that configurations 1 and 2, using WSM6 and Goddard schemes, achieved the highest Probability of Detection, Critical Success Index, and higher Success Rates for actual lightning events. …”
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L2-GNN: Graph neural networks with fast spectral filters using twice linear parameterization
Published 2025-08-01“…To improve learning on irregular 3D shapes, such as meshes with varying discretizations and point clouds with different samplings, we propose L2-GNN, a new graph neural network that approximates the spectral filters using twice linear parameterization. First, we parameterize the spectral filters using wavelet filter basis functions. …”
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Improving the Parameterization of Complex Subsurface Flow Properties With Style‐Based Generative Adversarial Network (StyleGAN)
Published 2024-11-01“…Numerical experiments involving model calibration with the Ensemble Smoother with Multiple Data Assimilation (ES‐MDA) in single‐phase and two‐phase fluid flow examples are used to assess the capabilities and limitations of these methods. The results show that parameterization with StyleGANs provides superior performance in terms of reconstruction fidelity and flexibility, underscoring its potential for improving the representation and reconstruction of complex spatial patterns in subsurface flow model calibration problems.…”
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Physical insights of squared speed of sound parameterized Brans-Dicke gravity through cosmic parameters and thermodynamics
Published 2025-06-01“…In most cases, the Om diagnostic shows a quintessence-like era, the jerk parameter and statefinder parameter show the ΛCDM limit and the ω−ω′ plane indicates a freezing region of the universe. …”
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Physical Parameterization Sensitivity of Noah-MP for Hydrothermal Simulation Within the Active Layer on the Qinghai–Tibet Plateau
Published 2025-01-01“…Further analysis showed that scheme 2 of INF yielded better simulation results than scheme 1. …”
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Improved Parameterization of Cloud Droplet Spectral Dispersion Expected to Reduce Uncertainty in Evaluating Aerosol Indirect Effects
Published 2025-04-01“…Abstract Relative dispersion (ε), as a parameter characterizing droplet spectral shape, exerts a considerable impact on cloud radiation and precipitation processes, and its accurate parameterization is urgently needed in models. Current ε parameterizations, which are based on droplet number concentration or simply set as constants, are inadequate to satisfy the demand. …”
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A parameterized model for the real-time reconstruction of underwater sound speed fields in oceanic eddy environment
Published 2025-08-01“…With its remarkable advantages in both reconstruction efficiency and accuracy, this model shows great potential for practical applications in marine acoustic operations.…”
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Switching Linear Parameter-Varying Controller Design With H∞ Performance Based on Youla Parameterization
Published 2020-01-01“…This article utilizes the Youla parameterization method to design a switching linear parameter-varying (LPV) output-feedback controller. …”
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Toward a unified parameterization of three dimensional turbulent transport in high resolution numerical weather prediction models
Published 2025-06-01“…Abstract In numerical weather prediction (NWP) models, horizontal and vertical turbulent mixing is parameterized separately within the dynamic solver of a model and by a one-dimensional standalone module outside the dynamic core. …”
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Data-Driven Sensitivity Analysis of the Influence of Geometric Parameterized Variables on Flow Fields Under Different Design Spaces
Published 2024-11-01“…In aerodynamic shape optimization, geometric parameterized variables have a significant impact on the flow field, thereby influencing both the effectiveness and efficiency of the optimization process. …”
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Solving Steady-state Mono-energy Neutron Diffusion Solution Set with Parameterized Physics-informed Neural Network
Published 2024-06-01“…The results show that the PINN surrogate model under hard constraints has higher predictive accuracy, and the acceleration ratio is over 1 000. …”
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The Role of Forcing and Parameterization in Improving Snow Simulation in the Upper Colorado River Basin Using the National Water Model
Published 2024-08-01“…Results showed that NWM driven by AORC forcings captured the overall temporal variation of SWE but underestimated its amount. …”
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Neural Network Parameterization of Subgrid‐Scale Physics From a Realistic Geography Global Storm‐Resolving Simulation
Published 2024-02-01“…Overall, this study shows potential for the replacement of human‐designed parameterizations with data‐driven ones in a realistic setting.…”
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Impact of modified parameterizations in CLM5.0 on soil hydrothermal dynamics in permafrost regions of the Qinghai–Tibet Plateau
Published 2025-04-01“…The results showed that soil temperature was more sensitive to the modified soil thermal conductivity and unfrozen water schemes, with average RMSE reduced by approximately 0.60 °C compared to the default CLM5.0. …”
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Evaluation of Land-atmosphere Coupling Strength in Low-latitude Highland of Southeast Asia by WRF Model Parameterization Schemes
Published 2024-08-01“…Southeast Asia's Low-Latitude Highland (LLH) is one of the hotspots of land-atmosphere coupling in the world, with its land-atmosphere interaction has significant impacts on climate, hydrology and environment.This study employs Uniform Design (UD) method to conduct 48 groups of simulation using different parameterization schemes of Weather Research and Forecasting (WRF) model.By optimizing the parameterization schemes, the variables related to land-atmosphere interaction in this area are simulated and evaluated.The findings are as follows: (1) The ensemble of 48 simulation groups demonstrates good performance for near-surface air temperature, near-surface specific humidity, surface downward longwave radiation, surface upward longwave radiation and surface soil temperature, with average Taylor Skill Score (TSS) values exceeding 0.8; for near-surface wind speed, precipitation, surface sensible heat flux, surface latent heat flux, surface downward shortwave radiation and surface upward shortwave radiation, the ensemble simulation can adequately capture the characteristics of these variables, with average TSS values ranging between 0.4 and 0.8; but for surface soil moisture, the ensemble simulation performance is poor, with average TSS values less than 0.4.The variability among different simulation groups is minimal for near-surface wind speed, precipitation, surface latent heat flux, surface downward shortwave radiation, surface upward shortwave radiation, surface soil temperature and surface soil moisture (TSS range < 0.2); but for the surface sensible heat flux, the variability among different simulation groups is significant (TSS range > 0.3).(2) The optimal parameterization schemes based on equal-weighted averaged TSS can enhance simulation accuracy for near-surface air temperature, near-surface specific humidity, surface downward longwave radiation, surface upward longwave radiation and surface soil temperature, with correlation coefficients exceeding 0.9 and minor deviations from reference values.However, this optimization could not significantly improve simulation performance for near-surface wind speed, precipitation, surface sensible heat flux, surface latent heat flux and surface soil moisture, where deviations remain substantial.(3) The optimal parameterization schemes can reasonably capture the spatial and temporal features of land-atmosphere coupling, showing strong coupling strength in northeast and southwest LLH, with temporal correlation coefficient greater than 0.9.Nonetheless, the simulated values of coupling strength is generally weaker than the reference values, primarily due to poor simulation performance of surface latent heat flux and surface downward shortwave radiation.…”
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Evaluation of Topographic Effect Parameterizations in Weather Research and Forecasting Model over Complex Mountainous Terrain in Wildfire-Prone Regions
Published 2025-05-01“…The simulation results of the wildfire case in 2019 show that subgrid-scale orographic parameterization considerably improves model performance regarding wind speed, with a lower root mean square error (RMSE) and bias by 53% and 57%, respectively. …”
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Effect of a Scale‐Aware Convective Parameterization Scheme on the Simulation of Convective Cells‐Related Heavy Rainfall in South Korea
Published 2022-06-01“…Abstract In this study, the effect of a scale‐aware convective parameterization scheme (CPS) on the simulation of heavy precipitation in the gray‐zone was investigated using the Weather Research and Forecasting (WRF) model. …”
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