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Journal articles on the topic 'Irradiance fields'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Brand, Matt, and Daniel A. Birch. "Freeform irradiance tailoring for light fields." Optics Express 27, no. 12 (2019): A611. http://dx.doi.org/10.1364/oe.27.00a611.

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Quéno, Louis, Fatima Karbou, Vincent Vionnet, and Ingrid Dombrowski-Etchevers. "Satellite-derived products of solar and longwave irradiances used for snowpack modelling in mountainous terrain." Hydrology and Earth System Sciences 24, no. 4 (2020): 2083–104. http://dx.doi.org/10.5194/hess-24-2083-2020.

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Abstract. In mountainous terrain, the snowpack is strongly affected by incoming shortwave and longwave radiation. In this study, a thorough evaluation of the solar and longwave downwelling irradiance products (DSSF and DSLF) derived from the Meteosat Second Generation satellite was undertaken in the French Alps and the Pyrenees. The satellite-derived products were compared with forecast fields from the meteorological model AROME and with analysis fields from the SAFRAN system. A new satellite-derived product (DSLFnew) was developed by combining satellite observations and AROME forecasts. An ev

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3

Moore, Nicole J., Miguel A. Alonso, and Colin J. R. Sheppard. "Monochromatic scalar fields with maximum focal irradiance." Journal of the Optical Society of America A 24, no. 7 (2007): 2057. http://dx.doi.org/10.1364/josaa.24.002057.

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4

Lawrence, J. K., G. A. Chapman, and S. R. Walton. "Weak magnetic fields and solar irradiance variations." Astrophysical Journal 375 (July 1991): 771. http://dx.doi.org/10.1086/170241.

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5

Harvey, Karen L. "Irradiance Models Based on Solar Magnetic Fields." International Astronomical Union Colloquium 143 (1994): 217–25. http://dx.doi.org/10.1017/s0252921100024714.

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A method to separate the active region and quiet network components of the magnetic fields in the photosphere is described and compared with the corresponding measurements of the He I λ 10830 absorption. The relation between the total He I absorption and total magnetic flux in active regions is roughly linear and differs between cycles 21 and 22. There appears to no relation between these two quantities in areas outside of active regions. The total He I absorption in the quiet Sun (comprised of network, filaments, and coronal holes) exceeds that in active regions at all times during the cycle.

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Fox, Peter A., and Sabatino Sofia. "Convection and Irradiance Variations." International Astronomical Union Colloquium 143 (1994): 280–90. http://dx.doi.org/10.1017/s0252921100024787.

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In the outer layers of the Sun (≈ 30% by radius), energy is transported by convection. The nature of the highly stratified and compressible convective flow is determined from the components of the energy flux (internal, kinetic, viscous, magnetic and radiative). Local suppressions or enhancements of any of these components may give rise to measurable changes in the emergent radiation.On the solar surface there is direct evidence for modulation of the emerging heat flux covering a large range in spatial and temporal scales, particularly associated with concentrated magnetic fields (e.g. sunspot

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Li, Linhai, Dariusz Stramski, and Mirosław Darecki. "Characterization of the Light Field and Apparent Optical Properties in the Ocean Euphotic Layer Based on Hyperspectral Measurements of Irradiance Quartet." Applied Sciences 8, no. 12 (2018): 2677. http://dx.doi.org/10.3390/app8122677.

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Although the light fields and apparent optical properties (AOPs) within the ocean euphotic layer have been studied for many decades through extensive measurements and theoretical modeling, there is virtually a lack of simultaneous high spectral resolution measurements of plane and scalar downwelling and upwelling irradiances (the so-called irradiance quartet). We describe a unique dataset of hyperspectral irradiance quartet, which was acquired under a broad range of environmental conditions within the water column from the near-surface depths to about 80 m in the Gulf of California. This datas

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Spruit, Henk C. "Theoretical Interpretation of Solar and Stellar Irradiance Variations." International Astronomical Union Colloquium 143 (1994): 270–79. http://dx.doi.org/10.1017/s0252921100024775.

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The main cause of variability of solar type stars are their varying magnetic fields. To compute irradiance variations one has to compute the magnetic field (the dynamo problem), and from this the irradiance effects. The second problem is considered here. The theoretical work of the past decade has shown that the dominant effect of magnetic fields is a surface effect: a change of effective emissivity of the magnetic parts of the surface while the nonmagnetic part of the surface contributes very little to the irradiance variation on almost all time scales. No other processes have yet been found

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9

Preisendorfer, Rudolph W., and Curtis D. Mobley. "Theory of fluorescent irradiance fields in natural waters." Journal of Geophysical Research 93, no. D9 (1988): 10831. http://dx.doi.org/10.1029/jd093id09p10831.

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Mol, Wouter, and Chiel van Heerwaarden. "Mechanisms of surface solar irradiance variability under broken clouds." Atmospheric Chemistry and Physics 25, no. 8 (2025): 4419–41. https://doi.org/10.5194/acp-25-4419-2025.

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Abstract. Surface solar irradiance variability is present under all broken clouds, but the patterns, magnitude of variability, and driving mechanisms vary greatly with cloud type. In this study, we performed numerical experiments to understand which main mechanisms drive surface solar irradiance (SSI) variations across a diverse set of observation-based cloud conditions. The results show that four mechanisms capture the essence. We find that for optically thin (τ<6) clouds, scattering in the forward direction (forward escape) dominates. In cloud fields with enough optically thin area, such

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Tereszchuk, Keith A., Yves J. Rochon, Chris A. McLinden, and Paul A. Vaillancourt. "Optimizing UV Index determination from broadband irradiances." Geoscientific Model Development 11, no. 3 (2018): 1093–113. http://dx.doi.org/10.5194/gmd-11-1093-2018.

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Abstract. A study was undertaken to improve upon the prognosticative capability of Environment and Climate Change Canada's (ECCC) UV Index forecast model. An aspect of that work, and the topic of this communication, was to investigate the use of the four UV broadband surface irradiance fields generated by ECCC's Global Environmental Multiscale (GEM) numerical prediction model to determine the UV Index. The basis of the investigation involves the creation of a suite of routines which employ high-spectral-resolution radiative transfer code developed to calculate UV Index fields from GEM forecast

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12

Nesme-Ribes, Elizabeth, Dmitry Sokoloff, and Robert Sadourny. "Solar Rotation, Irradiance Changes and Climate." International Astronomical Union Colloquium 143 (1994): 244–51. http://dx.doi.org/10.1017/s025292110002474x.

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Magnetic activity cycles for solar-type stars are believed to originate from non-uniform internal rotation. To determine this depthwise angular velocity distribution, helioseismology is a valuable source of information. Surface rotation, as traced by sunspot motion, is a well-observed parameter with data going back to the beginning of the telescopic era. This long sunspot series can be used in understanding the behaviour of the Sun’s surface rotation, the connection with its internal rotation, and thereby its magnetic activity. Apparent solar diameter is another important parameter. This is re

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Lu, Zhan, Qian Zheng, Boxin Shi, and Xudong Jiang. "Pano-NeRF: Synthesizing High Dynamic Range Novel Views with Geometry from Sparse Low Dynamic Range Panoramic Images." Proceedings of the AAAI Conference on Artificial Intelligence 38, no. 4 (2024): 3927–35. http://dx.doi.org/10.1609/aaai.v38i4.28185.

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Panoramic imaging research on geometry recovery and High Dynamic Range (HDR) reconstruction becomes a trend with the development of Extended Reality (XR). Neural Radiance Fields (NeRF) provide a promising scene representation for both tasks without requiring extensive prior data. How- ever, in the case of inputting sparse Low Dynamic Range (LDR) panoramic images, NeRF often degrades with under-constrained geometry and is unable to reconstruct HDR radiance from LDR inputs. We observe that the radiance from each pixel in panoramic images can be modeled as both a signal to convey scene lighting i

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Niu, Yisen, Ying Su, Ping Tang, Qian Wang, Yong Sun, and Jifeng Song. "Estimation of Solar Irradiance Under Cloudy Weather Based on Solar Radiation Model and Ground-Based Cloud Image." Energies 18, no. 3 (2025): 757. https://doi.org/10.3390/en18030757.

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The estimation of solar radiation plays an important role in different fields such as heating, agriculture and energy. At present, most studies focus on clear-sky models; it is relatively difficult to quantify the obstruction of radiation by clouds, which makes the calculation of irradiance in cloudy weather more challenging. This paper proposes a method for calculating solar irradiance in cloudy weather, which consists of two parts: radiation and cloud. In the radiation part, clear-sky radiation and the distribution of all-sky irradiance under different haze conditions are studied. In the clo

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Yeo, K. L., and N. A. Krivova. "Intensity contrast of solar network and faculae." Astronomy & Astrophysics 624 (April 2019): A135. http://dx.doi.org/10.1051/0004-6361/201935123.

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Aims. We aim to gain insight into the effect of network and faculae on solar irradiance from their apparent intensity. Methods. Taking full-disc observations from the Solar Dynamics Observatory, we examined the intensity contrast of network and faculae in the continuum and core of the Fe I 6173 Å line and 1700 Å, including the variation with magnetic flux density, distance from disc centre, nearby magnetic fields, and time. Results. The brightness of network and faculae is believed to be suppressed by nearby magnetic fields from its effect on convection. We note that the degree of magnetically

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Solanki, Sami K. "Irradiance Effects of Small-Scale Magnetic Fields on the Sun." International Astronomical Union Colloquium 143 (1994): 226–35. http://dx.doi.org/10.1017/s0252921100024726.

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Small-scale magnetic fields affect the solar luminosity mainly on long time scales. To understand their contribution to solar luminosity variations we must know and understand the contribution of a typical small-scale magnetic feature. In this review I briefly outline our theoretical understanding of the processes leading to the enhancement (or reduction) of the brightness of flux tubes. I also present a brief overview of our observational knowledge.

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U. MINA, S.D. SINGH, BHUPINDER SINGH, and MUNMI KHAUND. "Response of wheat and chickpea cultivars to reduced levels of solar irradiance." Journal of Agrometeorology 17, no. 2 (2015): 165–71. http://dx.doi.org/10.54386/jam.v17i2.998.

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The study was carried out at the Indian Agricultural Research Institute, experimental fields (28° N, 77° E) during 2008-2009 and 2009-2010 rabi season to observe response of wheat and chickpea cultivars to reduced levels of solar irradiance. In the present study two wheat ( Triticum aestivum; HD 2643 and PBW 343) and two chickpea (Cicer arienitum L. ; BG 1105 and BGD 72) cultivars were subjectedto 20 per cent and 35 per cent less levels of solar irradiance than the control that received 100 per cent natural sunlight during entire crop growth period. The results show that the height and leaf ar

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Pandey, P., K. De Ridder, D. Gillotay, and N. P. M. van Lipzig. "Estimating cloud optical thickness and associated surface UV irradiance from SEVIRI by implementing a semi-analytical cloud retrieval algorithm." Atmospheric Chemistry and Physics Discussions 12, no. 1 (2012): 691–721. http://dx.doi.org/10.5194/acpd-12-691-2012.

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Abstract. In this paper, we describe the implementation of the Semi-Analytical Cloud Retrieval Algorithm (SACURA), to obtain scaled cloud optical thickness (SCOT) from satellite imagery acquired with the SEVIRI instrument and surface UV irradiance levels. In estimation of SCOT particular care is given to the proper specification of the background (i.e., cloud-free) spectral albedo and the retrieval of the cloud water phase from reflectance ratios in SEVIRI's 0.6 μm and 1.6 μm spectral bands. The SACURA scheme is then applied to daytime SEVIRI imagery over Europe, for the month of June 2006, at

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Pandey, P., K. De Ridder, D. Gillotay, and N. P. M. van Lipzig. "Estimating cloud optical thickness and associated surface UV irradiance from SEVIRI by implementing a semi-analytical cloud retrieval algorithm." Atmospheric Chemistry and Physics 12, no. 17 (2012): 7961–75. http://dx.doi.org/10.5194/acp-12-7961-2012.

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Abstract. In this paper, we describe the implementation of the Semi-Analytical Cloud Retrieval Algorithm (SACURA), to obtain scaled cloud optical thickness (SCOT) from satellite imagery acquired with the SEVIRI instrument and surface UV irradiance levels. In estimation of SCOT particular care is given to the proper specification of the background (i.e. cloud-free) spectral albedo and the retrieval of the cloud water phase from reflectance ratios in SEVIRI's 0.6 μm and 1.6 μm spectral bands. The SACURA scheme is then applied to daytime SEVIRI imagery over Europe, for the month of June 2006, at

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Wolf, Kevin, André Ehrlich, Mario Mech, Robin J. Hogan, and Manfred Wendisch. "Evaluation of ECMWF Radiation Scheme Using Aircraft Observations of Spectral Irradiance above Clouds." Journal of the Atmospheric Sciences 77, no. 8 (2020): 2665–85. http://dx.doi.org/10.1175/jas-d-19-0333.1.

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Abstract A novel approach to compare airborne observations of solar spectral irradiances measured above clouds with along-track radiative transfer simulations (RTS) is presented. The irradiance measurements were obtained with the Spectral Modular Airborne Radiation Measurement System (SMART) installed on the High Altitude and Long Range Research Aircraft (HALO). The RTS were conducted using the operational ecRad radiation scheme of the Integrated Forecast System (IFS), operated by the European Centre for Medium-Range Weather Forecasts (ECMWF), and a stand-alone radiative transfer solver, the l

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Chen, Hong, Sebastian Schmidt, Michael D. King, et al. "The effect of low-level thin arctic clouds on shortwave irradiance: evaluation of estimates from spaceborne passive imagery with aircraft observations." Atmospheric Measurement Techniques 14, no. 4 (2021): 2673–97. http://dx.doi.org/10.5194/amt-14-2673-2021.

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Abstract. Cloud optical properties such as optical thickness along with surface albedo are important inputs for deriving the shortwave radiative effects of clouds from spaceborne remote sensing. Owing to insufficient knowledge about the snow or ice surface in the Arctic, cloud detection and the retrieval products derived from passive remote sensing, such as from the Moderate Resolution Imaging Spectroradiometer (MODIS), are difficult to obtain with adequate accuracy – especially for low-level thin clouds, which are ubiquitous in the Arctic. This study aims at evaluating the spectral and broadb

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Gristey, Jake J., Graham Feingold, Ian B. Glenn, K. Sebastian Schmidt, and Hong Chen. "Surface Solar Irradiance in Continental Shallow Cumulus Fields: Observations and Large-Eddy Simulation." Journal of the Atmospheric Sciences 77, no. 3 (2019): 1065–80. http://dx.doi.org/10.1175/jas-d-19-0261.1.

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Abstract This study examines shallow cumulus cloud fields and their surface shortwave radiative effects using large-eddy simulation (LES) along with observations across multiple days at the Atmospheric Radiation Measurement Southern Great Plains atmospheric observatory. Pronounced differences are found between probability density functions (PDFs) of downwelling surface solar irradiance derived from observations and LES one-dimensional (1D) online radiation calculations. The shape of the observed PDF is bimodal, which is only reproduced by offline three-dimensional (3D) radiative transfer calcu

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Mayer, B., S. W. Hoch, and C. D. Whiteman. "Validating the MYSTIC three-dimensional radiative transfer model with observations from the complex topography of Arizona's Meteor Crater." Atmospheric Chemistry and Physics Discussions 10, no. 5 (2010): 13373–405. http://dx.doi.org/10.5194/acpd-10-13373-2010.

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Abstract. The MYSTIC three-dimensional Monte-Carlo radiative transfer model has been extended to simulate solar and thermal irradiances with a rigorous consideration of topography. Forward as well as backward Monte Carlo simulations are possible for arbitrarily oriented surfaces and we demonstrate that the backward Monte Carlo technique is superior to the forward method for applications involving topography, by greatly reducing the computational demands. MYSTIC is used to simulate the short- and longwave radiation fields during a clear day and night in and around Arizona's Meteor Crater, a bow

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Mayer, B., S. W. Hoch, and C. D. Whiteman. "Validating the MYSTIC three-dimensional radiative transfer model with observations from the complex topography of Arizona's Meteor Crater." Atmospheric Chemistry and Physics 10, no. 18 (2010): 8685–96. http://dx.doi.org/10.5194/acp-10-8685-2010.

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Abstract. The MYSTIC three-dimensional Monte-Carlo radiative transfer model has been extended to simulate solar and thermal irradiances with a rigorous consideration of topography. Forward as well as backward Monte Carlo simulations are possible for arbitrarily oriented surfaces and we demonstrate that the backward Monte Carlo technique is superior to the forward method for applications involving topography, by greatly reducing the computational demands. MYSTIC is used to simulate the short- and longwave radiation fields during a clear day and night in and around Arizona's Meteor Crater, a bow

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Liu, Qingyun, Haichun Liu, Deyang Li, Wen Qiao, Guanying Chen, and Hans Ågren. "Microlens array enhanced upconversion luminescence at low excitation irradiance." Nanoscale 11, no. 29 (2019): 14070–78. http://dx.doi.org/10.1039/c9nr03105g.

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Microlens arrays are applied as spatial light modulators to manipulate the distribution of excitation light fields in order to overcome the high excitation-intensity threshold of upconversion nanoparticles, taking advantage of their nonlinear response to excitation irradiance.

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Chen, Hong, K. Sebastian Schmidt, Steven T. Massie, et al. "The Education and Research 3D Radiative Transfer Toolbox (EaR³T) – towards the mitigation of 3D bias in airborne and spaceborne passive imagery cloud retrievals." Atmospheric Measurement Techniques 16, no. 7 (2023): 1971–2000. http://dx.doi.org/10.5194/amt-16-1971-2023.

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Abstract. We introduce the Education and Research 3D Radiative Transfer Toolbox (EaR3T, pronounced []) for quantifying and mitigating artifacts in atmospheric radiation science algorithms due to spatially inhomogeneous clouds and surfaces and show the benefits of automated, realistic radiance and irradiance generation along extended satellite orbits, flight tracks from entire aircraft field missions, and synthetic data generation from model data. EaR3T is a modularized Python package that provides high-level interfaces to automate the process of 3D radiative transfer (3D-RT) calculations. Afte

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Parker, Eugene N. "Theoretical Interpretation of Magnetic Activity." International Astronomical Union Colloquium 143 (1994): 264–69. http://dx.doi.org/10.1017/s0252921100024763.

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Magnetic fields generated and driven by thermal convection are the primary cause of solar activity. There are many facets of the activity, such as plages, flares, sunspots, coronal heating, and the variation of solar luminosity or irradiance whose nature and cause are understood only partially or not at all, although detailed superficial observational descriptions are available. It is suggested that the inferred 105 gauss azimuthal field bundles may be a direct result of the emergence of Ω-loops to form bipolar magnetic regions on the surface in association with an increase in solar irradiance

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Gray, David F. "Stellar Photospheres: Success, Failure, Ambiguity, & Ambition." Symposium - International Astronomical Union 210 (2003): 287–300. http://dx.doi.org/10.1017/s0074180900133431.

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Models are compared with observations in several examples, including spectroscopic temperature measurement, irradiance variations, stellar rotation from line profiles, and velocity fields in stellar photospheres. A few key issues for investigations in the near future are suggested.

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Schmidt, K. S., G. Feingold, P. Pilewskie, H. Jiang, O. Coddington, and M. Wendisch. "Irradiance in polluted cumulus fields: Measured and modeled cloud-aerosol effects." Geophysical Research Letters 36, no. 7 (2009): n/a. http://dx.doi.org/10.1029/2008gl036848.

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Zhang, Shuting, and Xiaochun Wang. "Influence of Clouds and Aerosols on Solar Irradiance and Application of Climate Indices in Its Monthly Forecast over China." Atmosphere 16, no. 6 (2025): 730. https://doi.org/10.3390/atmos16060730.

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Based on the Clouds and the Earth’s Radiant Energy System (CERES) satellite data from 2001 to 2023 and the climate indices from the National Oceanic and Atmospheric Administration (NOAA), this study analyzes the solar irradiance over mainland China and the impacts of clouds and aerosols on it and constructs monthly forecasting models to analyze the influence of climate indices on irradiance forecasts. The irradiance over mainland China shows a spatial distribution of being higher in the west and lower in the east. The influence of clouds on irradiance decreases from south to north, and the inf

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POMMIER, LAURENT, and ERIK LEFEBVRE. "Simulations of energetic proton emission in laser–plasma interaction." Laser and Particle Beams 21, no. 4 (2003): 573–81. http://dx.doi.org/10.1017/s0263034603214166.

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Energetic protons are emitted from thin foils irradiated by short laser pulses at high intensities. One- and two-dimensional particle-in-cell simulations have been used to study the influence of initial proton position, laser irradiance, and target density profile on this ion acceleration. These simulations bring additional support to the idea that protons are mainly accelerated from the rear side of the target, by electrostatic fields associated with hot electrons escaping into vacuum. The density scale length at the front of the target appears to be the main parameter to increase proton ener

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Hyde, Milo W. "Independently Controlling Stochastic Field Realization Magnitude and Phase Statistics for the Construction of Novel Partially Coherent Sources." Photonics 8, no. 2 (2021): 60. http://dx.doi.org/10.3390/photonics8020060.

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In this paper, we present a method to independently control the field and irradiance statistics of a partially coherent beam. Prior techniques focus on generating optical field realizations whose ensemble-averaged autocorrelation matches a specified second-order field moment known as the cross-spectral density (CSD) function. Since optical field realizations are assumed to obey Gaussian statistics, these methods do not consider the irradiance moments, as they, by the Gaussian moment theorem, are completely determined by the field’s first and second moments. Our work, by including control over

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Shao, Mingxin, Fei Du, Shuai Yuan, Jiangang Bi, and Yuan Xu. "On UV Photon Distribution of Discharge in GIS Busbar Based on Ray Tracing." Journal of Physics: Conference Series 2564, no. 1 (2023): 012008. http://dx.doi.org/10.1088/1742-6596/2564/1/012008.

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Abstract In order to clarify the distribution law of the ultraviolet photon field in gas insulated switchgear busbar, meanwhile to correct the detection range of the ultraviolet sensor, the optical model of the gas insulated switchgear busbar based on the uniform theory of diffraction is proposed based on ray tracing. the distributions of the radiation ultraviolet fields are calculated when partial discharge occurs at the key positions such as basin insulator and conductor. Based on the average irradiance, maximum irradiance, and attenuation characteristics, the distribution law in the busbar

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Johnson, Dennis A., Thomas F. Cummings, Rita Abi Ghanem, and J. Richard Alldredge. "Association of Solar Irradiance and Days of Precipitation with Incidence of Potato Late Blight in the Semiarid Environment of the Columbia Basin." Plant Disease 93, no. 3 (2009): 272–80. http://dx.doi.org/10.1094/pdis-93-3-0272.

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The effects of cumulative solar irradiance and rainfall on incidence of potato late blight (caused by Phytophthora infestans) in the Columbia Basin of south-central Washington and north-central Oregon were investigated using meteorological data collected near Othello, WA from 1990 through 2007 and Prosser, WA from 1990 through 2006. An association between solar irradiance and seasonal differences in late blight epidemics has not been quantitatively determined. Incidence of late blight in the Columbia Basin significantly increased as cumulative solar irradiance decreased during 1 April to 31 Ju

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SIGISMONDI, COSTANTINO. "SOLAR ASTROMETRY: THE STATUS OF ART IN 2011." International Journal of Modern Physics: Conference Series 23 (January 2013): 443–50. http://dx.doi.org/10.1142/s2010194513011732.

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Solar astrometry deals with the accurate measumerent of the solar diameter, and in general with the measurement of the shape of the Sun. During the last decades several techniques have been developed to monitor the radius and the irradiance of the Sun: meridian transits, telescopes in drift-scan mode, solar astrolabes, balloons, and satellites dedicated to the measurements of the solar diameter, and space measurements of the total solar irradiance are now performed to know the relationship radius-luminosity for the Sun in this evolutionary stage of its life. The feedback of solar astrometry in

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RAM, P. C., A. K. SINGH, B. B. SINGH, et al. "ENVIRONMENTAL CHARACTERIZATION OF FLOODWATER IN EASTERN INDIA: RELEVANCE TO SUBMERGENCE TOLERANCE OF LOWLAND RICE." Experimental Agriculture 35, no. 2 (1999): 141–52. http://dx.doi.org/10.1017/s0014479799002057.

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Floodwater was characterized through field surveys over three years in rainfed lowland and deepwater rice areas of Eastern India. Measurements focused on dissolved O2 and CO2, pH and irradiance during flash floods in rice fields. Over locations and time, dissolved O2 concentrations ranged from zero to 0.28 mol m−3 (0–1.1 times air-saturated water at 30 °C) while dissolved CO2 ranged from 0.28 to 1.96 mol m−3 (31–217 times air-saturated water). Floodwater pH varied from 6.6 to 9.7. Irradiance decreased with depth in the water profile to an extent depending on turbidity. Turbidity varied greatly

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Beyer, Hans Georg, Claudio Costanzo, and Christian Reise. "Multiresolution analysis of satellite-derived irradiance maps—An evaluation of a new tool for the spatial characterization of hourly irradiance fields." Solar Energy 55, no. 1 (1995): 9–20. http://dx.doi.org/10.1016/0038-092x(95)00038-s.

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Benevolenskaya, E. E., and I. G. Kostuchenko. "The Total Solar Irradiance, UV Emission and Magnetic Flux during the Last Solar Cycle Minimum." Journal of Astrophysics 2013 (July 22, 2013): 1–9. http://dx.doi.org/10.1155/2013/368380.

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We have analyzed the total solar irradiance (TSI) and the spectral solar irradiance as ultraviolet emission (UV) in the wavelength range 115–180 nm, observed with the instruments TIM and SOLSTICE within the framework of SORCE (the solar radiation and climate experiment) during the long solar minimum between the 23rd and 24th cycles. The wavelet analysis reveals an increase in the magnetic flux in the latitudinal zone of the sunspot activity, accompanied with an increase in the TSI and UV on the surface rotation timescales of solar activity complexes. In-phase coherent structures between the mi

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Wenzler, T., S. K. Solanki, and N. A. Krivova. "Can surface magnetic fields reproduce solar irradiance variations in cycles 22 and 23?" Astronomy & Astrophysics 432, no. 3 (2005): 1057–61. http://dx.doi.org/10.1051/0004-6361:20041956.

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Alsadi, Samer Yassin, and Yasser Fathi Nassar. "Estimation of Solar Irradiance on Solar Fields: An Analytical Approach and Experimental Results." IEEE Transactions on Sustainable Energy 8, no. 4 (2017): 1601–8. http://dx.doi.org/10.1109/tste.2017.2697913.

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Voyant, Cyril, Philippe Lauret, Gilles Notton, Jean-Laurent Duchaud, Luis Garcia-Gutierrez, and Ghjuvan Antone Faggianelli. "Complex-valued time series based solar irradiance forecast." Journal of Renewable and Sustainable Energy 14, no. 6 (2022): 066502. http://dx.doi.org/10.1063/5.0128131.

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A new method for short-term probabilistic forecasting of global solar irradiance from complex-valued time series is explored. The measurement defines the real part of the time series while the estimate of the volatility is the imaginary part. A complex autoregressive model (capable to capture quick fluctuations) is then applied with data gathered on the Corsica island (France). Results show that even if this approach is easy to implement and requires very little resource and data, both deterministic and probabilistic forecasts generated by this model are in agreement with experimental data (ro

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Lonsdorf, Anke S., Aric Keller, Julia Hartmann, Alexander H. Enk, and Patrick Gholam. "Ablative Fractional Laser-assisted Low-irradiance Photodynamic Therapy for Treatment of Actinic Keratoses in Organ Transplant Recipients: A Prospective, Randomized, Intraindividual Controlled Trial." Acta Dermato-Venereologica 102 (April 13, 2022): adv00694. http://dx.doi.org/10.2340/actadv.v102.1057.

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Pain and inferior efficacy are major limiting factors of conventional photodynamic therapy for the field treatment of actinic keratoses in immunosuppressed organ transplant recipients. This prospective randomized controlled study evaluates the efficacy and tolerability of ablative fractional laser system pretreatment combined with low-irradiance photodynamic therapy (18.5 mW/cm2) compared with conventional photodynamic therapy (61.67 mW/cm2) in the treatment of actinic keratoses on the face and scalp in organ transplant recipients, using a red light-emitting diode lamp at a total light dose of

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Lohmann, Gerald M., Adam H. Monahan, and Detlev Heinemann. "Local short-term variability in solar irradiance." Atmospheric Chemistry and Physics 16, no. 10 (2016): 6365–79. http://dx.doi.org/10.5194/acp-16-6365-2016.

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Abstract. Characterizing spatiotemporal irradiance variability is important for the successful grid integration of increasing numbers of photovoltaic (PV) power systems. Using 1 Hz data recorded by as many as 99 pyranometers during the HD(CP)2 Observational Prototype Experiment (HOPE), we analyze field variability of clear-sky index k* (i.e., irradiance normalized to clear-sky conditions) and sub-minute k* increments (i.e., changes over specified intervals of time) for distances between tens of meters and about 10 km. By means of a simple classification scheme based on k* statistics, we identi

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Yao, Bin, Weifang Sun, Binqiang Chen, Tianxiang Zhou, and Xincheng Cao. "Surface reconstruction based on the camera relative irradiance." International Journal of Distributed Sensor Networks 14, no. 2 (2018): 155014771875956. http://dx.doi.org/10.1177/1550147718759566.

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Precise three-dimensional measurements of surfaces are significant in many fields. Usually, three-dimensional descriptions of the object surface have to be acquired by contact measure probe or other non-contact equipment. The paper proposed a novel surface reconstruction method that uses camera relative irradiance via the image gray-scale value information under fixed ring light. After calibrations of the measurement condition, just one image of the object is necessary to reconstruct the surface. The method mainly involves two aspects: the calibration process and the surface reconstruction pro

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Lee, Jared A., Sue Ellen Haupt, Pedro A. Jiménez, Matthew A. Rogers, Steven D. Miller, and Tyler C. McCandless. "Solar Irradiance Nowcasting Case Studies near Sacramento." Journal of Applied Meteorology and Climatology 56, no. 1 (2017): 85–108. http://dx.doi.org/10.1175/jamc-d-16-0183.1.

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AbstractThe Sun4Cast solar power forecasting system, designed to predict solar irradiance and power generation at solar farms, is composed of several component models operating on both the nowcasting (0–6 h) and day-ahead forecast horizons. The different nowcasting models include a statistical forecasting model (StatCast), two satellite-based forecasting models [the Cooperative Institute for Research in the Atmosphere Nowcast (CIRACast) and the Multisensor Advection-Diffusion Nowcast (MADCast)], and a numerical weather prediction model (WRF-Solar). It is important to better understand and asse

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Scheidsteger, Thomas, and Robin Haunschild. "Telling the story of solar energy meteorology into the satellite era by applying (co-citation) reference publication year spectroscopy." Scientometrics 125, no. 2 (2020): 1159–77. http://dx.doi.org/10.1007/s11192-020-03597-0.

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AbstractStudying the history of research fields by analyzing publication records and topical and/or keyword searches with reference publication year spectroscopy (RPYS) has been introduced as a powerful tool to identify the corresponding root publications. However, for some research fields (e.g., rather new and interdisciplinary fields) like solar energy meteorology, encompassing such research fields via a keyword- or topic-based search query is not feasible to get a reasonably exhaustive publication set. Therefore, we apply its variant RPYS-CO to all publications co-cited with two highly impo

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Wenzler, T., S. K. Solanki, N. A. Krivova, and C. Fröhlich. "Reconstruction of solar irradiance variations in cycles 21–23 based on surface magnetic fields." Astronomy & Astrophysics 460, no. 2 (2006): 583–95. http://dx.doi.org/10.1051/0004-6361:20065752.

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Gallucci, Donatello, Filomena Romano, Angela Cersosimo, et al. "Nowcasting Surface Solar Irradiance with AMESIS via Motion Vector Fields of MSG-SEVIRI Data." Remote Sensing 10, no. 6 (2018): 845. http://dx.doi.org/10.3390/rs10060845.

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Martínez-Lozano, José A., Maria P. Utrillas, Roberto Pedrós, et al. "Intercomparison of Spectroradiometers for Global and Direct Solar Irradiance in the Visible Range." Journal of Atmospheric and Oceanic Technology 20, no. 7 (2003): 997–1010. http://dx.doi.org/10.1175/1457.1.

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Abstract This paper presents the results of the analysis of the spectral, global, and direct solar irradiance measurements in the visible range (400–700 nm) that were made in the framework of the first Iberian UV–visible (VIS) instruments intercomparison. The instruments used in this spectral range were four spectroradiometers: three Licor 1800s equipped with different receiver optics and one Optronic 754. For the direct solar irradiance measurements the spectroradiometers were equipped with collimators with different fields of view. Parallel studies have been carried out with the data given b

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Jäkel, E., M. Wendisch, and B. Mayer. "Influence of spatial heterogeneity of local surface albedo on the area-averaged surface albedo retrieved from airborne irradiance measurements." Atmospheric Measurement Techniques 6, no. 3 (2013): 527–37. http://dx.doi.org/10.5194/amt-6-527-2013.

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Abstract. Spectral airborne upward and downward irradiance measurements are used to derive the area-averaged surface albedo. Real surfaces are not homogeneous in their reflectivity. Therefore, this work studies the effects of the heterogeneity of surface reflectivity on the area-averaged surface albedo to quantify how well aircraft measurements can resolve the small-scale variability of the local surface albedo. For that purpose spatially heterogeneous surface albedo maps were input into a 3-dimensional (3-D) Monte Carlo radiative transfer model to simulate 3-D irradiance fields. The calculate

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