scholarly journals Spectral solar irradiance on inclined surfaces: A fast Monte Carlo approach

2020 ◽  
Vol 12 (5) ◽  
pp. 053705
Author(s):  
Mengying Li ◽  
Zhouyi Liao ◽  
Carlos F. M. Coimbra
Keyword(s):  
Monte Carlo ◽  
Solar Irradiance ◽  
Monte Carlo Approach ◽  
Inclined Surfaces ◽  
Spectral Solar Irradiance

scholarly journals Accurate 3-D radiative transfer simulation of spectral solar irradiance during the total solar eclipse of 21 August 2017

2020 ◽  
Vol 20 (4) ◽  
pp. 1961-1976 ◽  
Author(s):  
Paul Ockenfuß ◽  
Claudia Emde ◽  
Bernhard Mayer ◽  
Germar Bernhard
Keyword(s):  
Monte Carlo ◽  
Solar Eclipse ◽  
Solar Irradiance ◽  
Monte Carlo Model ◽  
Solar Limb ◽  
Relative Difference ◽  
Total Solar Eclipse ◽  
Monte Carlo Code ◽  
Increased Sensitivity ◽  
Spectral Solar Irradiance

Abstract. We calculate the variation of spectral solar irradiance in the umbral shadow of the total solar eclipse of 21 August 2017 and compare it to observations. Starting from the Sun's and Moon's positions, we derive a realistic profile of the lunar shadow at the top of the atmosphere, including the effect of solar limb darkening. Subsequently, the Monte Carlo model MYSTIC (Monte Carlo code for the phYSically correct Tracing of photons In Cloudy atmospheres) is used to simulate the transfer of solar radiation through the Earth's atmosphere. Among the effects taken into account are the atmospheric state (pressure, temperature), concentrations of major gas constituents and the curvature of the Earth, as well as the reflectance and elevation of the surrounding area. We apply the model to the total solar eclipse on 21 August 2017 at a position located in Oregon, USA, where irradiance observations were performed for wavelengths between 306 and 1020 nm. The influence of the surface reflectance, the ozone profile, the mountains surrounding the observer and aerosol is investigated. An increased sensitivity during totality is found for the reflectance, aerosol and topography, compared to non-eclipse conditions. During the eclipse, the irradiance at the surface not only depends on the total ozone column (TOC) but also on the vertical ozone distribution, which in general complicates derivations of the TOC from spectral surface irradiance. The findings are related to an analysis of the prevailing photon path and its difference compared to non-eclipse conditions. Using the most realistic estimate for each parameter, the model is compared to the irradiance observations. During totality, the relative difference between model and observations is less than 10 % in the spectral range from 400 to 1020 nm. Slightly larger deviations occur in the ultraviolet range below 400 and at 665 nm.

Wigner-Boltzmann Monte Carlo approach to nanodevice simulation: from quantum to semiclassical transport

2009 ◽  
Vol 8 (3-4) ◽  
pp. 324-335 ◽  
Author(s):  
Damien Querlioz ◽  
Huu-Nha Nguyen ◽  
Jérôme Saint-Martin ◽  
Arnaud Bournel ◽  
Sylvie Galdin-Retailleau ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Approach ◽  
Semiclassical Transport

scholarly journals On the stochastic uncertainties of thermally and optically stimulated luminescence signals: A Monte Carlo approach

2020 ◽  
Vol 219 ◽  
pp. 116945
Author(s):  
Vasilis Pagonis ◽  
Sebastian Kreutzer ◽  
Alex Roy Duncan ◽  
Ena Rajovic ◽  
Christian Laag ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Optically Stimulated Luminescence ◽  
Monte Carlo Approach ◽  
Stochastic Uncertainties

Data on total and spectral solar irradiance

1983 ◽  
Vol 22 (9) ◽  
pp. 1354 ◽  
Author(s):  
Ann T. Mecherikunnel ◽  
James A. Gatlin ◽  
Joseph C. Richmond
Keyword(s):  
Solar Irradiance ◽  
Spectral Solar Irradiance
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