Results 11 to 20 of about 31,927 (257)

Monte Carlo radiative transfer [PDF]

open access: yesLiving Reviews in Computational Astrophysics, 2019
The theory and numerical modelling of radiation processes and radiative transfer play a key role in astrophysics: they provide the link between the physical properties of an object and the radiation it emits. In the modern era of increasingly high-quality observational data and sophisticated physical theories, development and exploitation of a variety ...
Ulrich M. Noebauer, Stuart A. Sim
openaire   +6 more sources

Neighboring Column Approximation—An Improved 3D Thermal Radiative Transfer Approximation for Non‐Rectangular Grids

open access: yesJournal of Advances in Modeling Earth Systems, 2020
We present a significantly improved version of the Neighboring Column Approximation (NCA 2.0), a fast 3D approximation for the calculation of thermal heating and cooling rates in cloudy atmospheres for large eddy simulation models.
Carolin Klinger, Bernhard Mayer
doaj   +1 more source

A Refined Four-Stream Radiative Transfer Model for Row-Planted Crops

open access: yesRemote Sensing, 2020
In modeling the canopy reflectance of row-planted crops, neglecting horizontal radiative transfer may lead to an inaccurate representation of vegetation energy balance and further cause uncertainty in the simulation of canopy reflectance at larger ...
Xu Ma, Tiejun Wang, Lei Lu
doaj   +1 more source

Analytical Solution of Problems about the Radiative and Radiative–Conductive Stationary Heat Transfer in a Medium with an Arbitrary Dependence of the Scattering and Absorption on Frequency Boundary Conditions

open access: yesEnergies, 2021
We defined a method for the analytical solution of problems on stationary radiative and radiative–conductive heat transfer in a medium with an arbitrary frequency dependence of absorption and scattering near its boundary.
Eugene Shamparov   +3 more
doaj   +1 more source

Radiative heat transfer exceeding the blackbody limit between macroscale planar surfaces separated by a nanosize vacuum gap

open access: yesNature Communications, 2016
Evanescent coupling between surfaces separated by a distance smaller than the thermal wavelength can lead to radiative heat transfer greater than the blackbody limit.
Michael P. Bernardi   +2 more
doaj   +1 more source

The impact of coupled 3D shortwave radiative transfer on surface radiation and cumulus clouds over land [PDF]

open access: yesAtmospheric Chemistry and Physics
Radiative transfer is a 3D process, but most atmospheric models consider radiation only in the vertical direction for computational efficiency. This results in inaccurate surface radiation fields, as the horizontal transport of radiation is neglected ...
M. Tijhuis   +2 more
doaj   +1 more source

A case study of the radiative effect of aerosols over Europe: EUCAARI-LONGREX [PDF]

open access: yesAtmospheric Chemistry and Physics, 2016
The radiative effect of anthropogenic aerosols over Europe during the 2008 European Integrated Project on Aerosol Cloud Climate and Air Quality Interactions Long Range Experiment (EUCAARI-LONGREX) campaign has been calculated using measurements ...
A. R. Esteve   +4 more
doaj   +1 more source

PyRTlib: an educational Python-based library for non-scattering atmospheric microwave radiative transfer computations [PDF]

open access: yesGeoscientific Model Development
This article introduces PyRTlib, a new standalone Python package for non-scattering line-by-line microwave radiative transfer simulations. PyRTlib is a flexible and user-friendly tool for computing down- and upwelling brightness temperatures and related ...
S. Larosa   +5 more
doaj   +1 more source

Spectral Modeling of the Supersoft X-Ray Source CAL87 Based on Radiative Transfer Codes

open access: yesThe Astrophysical Journal, 2023
Supersoft X-ray sources (SSSs) are white dwarf (WD) binaries that radiate almost entirely below ∼1 keV. Their X-ray spectra are often complex when viewed with the X-ray grating spectrometers, where numerous emission and absorption features are ...
Masahiro Tsujimoto   +4 more
doaj   +1 more source

Investigation on the effect of fractal soot aggregation on radiative transfer in homogeneous gas-soot mixture using full-spectrum k-distribution method

open access: yesJournal of Thermal Science and Technology, 2019
The full-spectrum k-distribution (FSK) method and Generalized Multiparticle Mie-solution (GMM) method are applied to study the influences of soot aggregation on the radiative heat transfer in homogeneous gas-soot mixtures. The radiative transfer equation
Zhenzong HE   +3 more
doaj   +1 more source

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