Results 11 to 20 of about 313 (129)

Coupling WRF Double-Moment 6-Class Microphysics Schemes to RRTMG Radiation Scheme in Weather Research Forecasting Model [PDF]

open access: yesAdvances in Meteorology, 2016
A method to explicitly calculate the effective radius of hydrometeors in the Weather Research Forecasting (WRF) double-moment 6-class (WDM6) microphysics scheme is designed to tackle the physical inconsistency in cloud properties between the microphysics
Soo Ya Bae   +2 more
doaj   +3 more sources

Using surface remote sensors to derive radiative characteristics of Mixed-Phase Clouds: an example from M-PACE [PDF]

open access: yesAtmospheric Chemistry and Physics, 2011
Measurements from ground-based cloud radar, high spectral resolution lidar and microwave radiometer are used in conjunction with a column version of the Rapid Radiative Transfer Model (RRTMG) and radiosonde measurements to derive the surface radiative ...
G. de Boer   +3 more
doaj   +1 more source

Compound Parameterization to Improve the Accuracy of Radiation Emulator in a Numerical Weather Prediction Model

open access: yesGeophysical Research Letters, 2021
To improve the numerical weather prediction model over Korea using a neural network (NN) radiation emulator, two types of compound parameterization (CP) were developed.
Hwan‐Jin Song   +2 more
doaj   +1 more source

Improved Weather Forecasting Using Neural Network Emulation for Radiation Parameterization

open access: yesJournal of Advances in Modeling Earth Systems, 2021
In this study, a neural network (NN) emulator for radiation parameterization was developed to use in an operational weather forecasting model in the Korea Meteorological Administration. The development of the NN emulator was based on large‐scale training
Hwan‐Jin Song, Soonyoung Roh
doaj   +1 more source

Combinational Optimization of the WRF Physical Parameterization Schemes to Improve Numerical Sea Breeze Prediction Using Micro-Genetic Algorithm

open access: yesApplied Sciences, 2021
This study aims to improve the performance of the Weather Research and Forecasting (WRF) model in the sea breeze circulation using the micro-Genetic Algorithm (micro-GA).
Ji Won Yoon, Sujeong Lim, Seon Ki Park
doaj   +1 more source

WRF-CMAQ two-way coupled system with aerosol feedback: software development and preliminary results [PDF]

open access: yesGeoscientific Model Development, 2012
Air quality models such as the EPA Community Multiscale Air Quality (CMAQ) require meteorological data as part of the input to drive the chemistry and transport simulation.
D. C. Wong   +9 more
doaj   +1 more source

Implementation of a machine-learned gas optics parameterization in the ECMWF Integrated Forecasting System: RRTMGP-NN 2.0 [PDF]

open access: yesGeoscientific Model Development, 2023
Radiation schemes are physically important but computationally expensive components of weather and climate models. This has spurred efforts to replace them with a cheap emulator based on neural networks (NNs), obtaining large speed-ups, but at the ...
P. Ukkonen, R. J. Hogan, R. J. Hogan
doaj   +1 more source

A Radiative Transfer Emulator Dataset for WRF RRTMG-K

open access: yes, 2023
This dataset is used for training the NN models in paper "A Radiative Transfer Deep Learning Model Coupled into WRF with a Generic Fortran Torch Adaptor".
openaire   +1 more source

Using a GPU to Accelerate a Longwave Radiative Transfer Model with Efficient CUDA-Based Methods

open access: yesApplied Sciences, 2019
Climatic simulations rely heavily on high-performance computing. As one of the atmospheric radiative transfer models, the rapid radiative transfer model for general circulation models (RRTMG) is used to calculate the radiative transfer of electromagnetic
Yuzhu Wang   +5 more
doaj   +1 more source

Evaluating and improving the treatment of gases in radiation schemes: the Correlated K-Distribution Model Intercomparison Project (CKDMIP) [PDF]

open access: yesGeoscientific Model Development, 2020
Most radiation schemes in weather and climate models use the “correlated k distribution” (CKD) method to treat gas absorption, which approximates a broadband spectral integration by N pseudo-monochromatic calculations. Larger N means more accuracy and a
R. J. Hogan, M. Matricardi
doaj   +1 more source

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