WRF-CMAQ two-way coupled system with aerosol feedback: software development and preliminary results [PDF]
Geoscientific 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 +3 more sources
Environmental Research Letters, 2012 We evaluate differences in clear-sky upwelling shortwave radiation reaching the top of the atmosphere in response to increasing the albedo of roof surfaces in an area of India with moderately high aerosol loading.
Francisco Salamanca +6 more
doaj +2 more sources
Evaluations and Improvements of the RRTMG and Fu-Liou Radiative Transfer Model Simulations of Clouds [PDF]
, 2020 Clouds play an important role in the Earth s climate system, especially affecting the radiation balance and hydrological cycle. However, the modeled ice cloud radiative effects (CRE) are quite uncertain, because longwave scattering is neglected and ...
Gu, Boyan
core +1 more source
Geophysical 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
Journal 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
Applied 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
Termisen turbulenssin vaikutus virtaukseen katukuilussa käyttämällä large-eddy mallinnusta [PDF]
, 2021 Ilman lämpötilat ovat yleisesti korkeampia rakennetuilla alueilla verrattuna ympäristöön. Auringon säteily ja sen varastoituminen rakennetuille pinnoille muuttavat pinnan vuorovaikutusta ilmakehän kanssa voiden ja sekoitusprosessien kautta ...
Strömberg, Jani
core
Implementation of a machine-learned gas optics parameterization in the ECMWF Integrated Forecasting System: RRTMGP-NN 2.0 [PDF]
Geoscientific 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
Evaluating and improving the treatment of gases in radiation schemes: the Correlated K-Distribution Model Intercomparison Project (CKDMIP) [PDF]
Geoscientific 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
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Contrasting the direct radiative effect and direct radiative forcing of aerosols [PDF]
Atmospheric Chemistry and Physics, 2014 The direct radiative effect (DRE) of aerosols, which is the instantaneous radiative impact of all atmospheric particles on the Earth's energy balance, is sometimes confused with the direct radiative forcing (DRF), which is the change in DRE from pre ...
C. L. Heald +6 more
doaj +1 more source