Analysis of direct and scattered solar radiation
Fine analysis for non-uniform temperature field and effect of railway truss suspension bridge under solar radiation
The total solar radiation of a bridge component can be assumed to be the sum of direct solar radiation, diffuse solar radiation and reflected solar radiation from ground, which can be expressed as [24]: (6) q s = α I T = α I b + I d + I r where α ranges from 0 to 1, which is the absorptivity coefficient of the surface material; I T is the total …
Review Review of solar irradiance and daylight illuminance modeling and sky classification
In the analysis of hourly data, the effect of solar altitude α s become important, particularly in considering the E NB.The prediction of the E NB from α s was mainly determined on an hourly basis. Since the number of stations measuring E NB was far less than measuring diffuse component, this type of correlation was carried out by less …
Mapping of 10-km daily diffuse solar radiation across China from …
To address this gap, a 41-year (1982–2022) daily diffuse solar radiation dataset (CHDSR) is constructed with a spatial resolution of 10 km, based on a new …
A Revisit of Direct and Diffuse Solar Radiation in China Based on …
Increasing energy and food demands require an understanding of not only the availability and variability of total solar radiation (R) but also its partitioning into …
An Analysis of Global, Direct and Diffuse Solar …
The paper studies the horizontal global, direct-beam and sky-diffuse solar radiation data measured in Hong Kong from 2008 to 2012, reports some of the general findings, evaluates mathematical...
Variations of Solar Radiation in Typical Resource Regions of …
3.1 Analysis of Climate Tendency Rate and Relative Variability of Climate Tendency Direct Radiation from the Sun''s Horizontal Plane. Table 1 for Beijing, Zhengzhou, Golmud, Kashgar, Lhasa, Mesozoic-cenozoic six typical resources area site of radiation in the sun direct radiation plane of climate tendency rate and climate tend to be relatively …
Solar radiation visibility testing algorithm for precise shadow distribution for spatial steel structural thermal analysis under ...
The depth buffer, also known as the Z-buffer, is considered a key concept in computer graphics [27] is generally used to address depth sorting issues during the graphics rendering process. As shown in Fig. 1, the depth buffer approach involves a two-dimensional array corresponding to the screen space, allowing the storage of the depth …
Correlation between global solar radiation and its direct and diffuse components
Work on typical correlations between global solar radiation and its direct and diffuse components is reviewed. ... This paper takes five cities in China as representatives of 5 typical climate regions, and 12 solar scattered radiation models are fitted with the Based ...
High-resolution analysis of direct and scattered radiation in the stratosphere between …
Direct and scattered components of solar radiation in the stratosphere are examined at wavelengths between 175 and 210 nm. Absorption by oxygen in the Schumann-Runge ...
Characteristics of Surface Solar Radiation under Different Air Pollution Conditions over Nanjing, China: Observation and Simulation
Surface solar radiation (SSR) can affect climate, the hydrological cycle, plant photosynthesis, and solar power. The values of solar radiation at the surface reflect the influence of human activity on radiative climate and environmental effects, so it is a key parameter in the evaluation of climate change and air pollution due to anthropogenic …
The Use of UV, Visible and Near IR Solar Back Scattered Radiation to Determine Trace …
In a similar way to the Dobson instruments, the BUV/SBUV also measured the intensity in narrow spectral intervals, for which the atmospheric O 3 absorption differs. From the BUV/SBUV data it is possible to retrieve information on the atmospheric O 3 concentration profile, because the penetration depth into the atmosphere strongly …
Evaluation and estimation of daily global solar radiation from the estimated direct and diffuse solar radiation
3.2 Empirical models for global, direct and diffuse horizontal solar radiation estimationMany different types of regression models, such as linear, quadratic, and cubic regression models, have been proposed in the literature for estimating global solar radiation (R s [MJ m −2 day −1]) from R a, measured daily sunshine duration (n …
An Analysis of Global, Direct and Diffuse Solar Radiation
The paper studies the horizontal global, direct-beam and sky-diffuse solar radiation data measured in Hong Kong from 2008 to 2012, ... 388 â€" 393 ScienceDirect The 7th International Conference on Applied Energy …
BASICS IN SOLAR RADIATION AT EARTH SURFACE
6 BASICS IN SOLAR RADIATION AT EARTH SURFACE The direct, diffuse and reflected components of the solar radiation at earth surface are defined. How to compute them on an inclined surface is briefly discussed and equations are provided. The direct ...
A Revisit of Direct and Diffuse Solar Radiation in China Based on Homogeneous Surface Observations: Climatology, Trends…
To further eliminate the outliers, the physical thresholds of daily R, R d, and R f were checked according to the following criteria: (1) R d and R f cannot be bigger than R, and their sum should equal to R; (2) the measured R should neither exceed extraterrestrial radiation (R a) nor fall below the lower boundary (0.03R a) and should not exceed the …
A Revisit of Direct and Diffuse Solar Radiation in …
To further eliminate the outliers, the physical thresholds of daily R, R d, and R f were checked according to the following criteria: (1) R d and R f cannot be bigger than R, and their sum should equal to R; (2) the …
High&resolution analysis of direct and scattered radiation in the …
High-resolution analysis of direct and scattered radiation in the stratosphere between 175 and 210 nm K. Minschwaner Advanced Study Program, National Center for Atmospheric Research, Boulder, Colorado Abstract. Direct and scattered components of solar
Calibration method of spectroradiometer based on direct solar …
The scattering channel of a spectroradiometer, as a commonly used optical parameter measuring device, can measure irradiance in all directions of the sky. To improve the calibration accuracy and efficiency, this paper proposes a spectral radiometer scattering channel calibration method based on direct solar radiation intensity. The direct solar …
Evaluation and estimation of daily global solar radiation from the …
Direct solar radiation passes directly through the atmosphere to the Earth''s surface, and diffuse solar radiation is scattered in the atmosphere. Understanding …
Measuring solar radiation and spatio-temporal distribution in different street network direction through solar …
Innovative Analysis of Urban Solar Radiation: Explored the impact of street directions on solar radiation distribution, enhancing understanding of urban environment. Temporal and Spatial Radiation Variations: Identified significant seasonal and locational differences in solar radiation within Beijing''s urban streets.
Use of a solar panel as a directionally sensitive large-area radiation monitor for direct and scattered …
The characteristics of a 25.4 X 91 cm solar cell panel used as an x-ray and gamma-ray radiation monitor are presented. Applications for monitoring the primary x-ray beam are described at different values of operating currents and voltages as well as for directional dependence of scattered radiation. …
Analysis of solar radiation transfer: A method to estimate the porosity of a plastic shading net
The objectives of this study are to: (i) modify the radiation balance method to be used for determining the value of Π precisely, (ii) examine the effect of scanning resolution used in the image processing method on the value of Π and (iii) check the precession of the proposed method by comparing its results with the results of the image …
Analysis of yield constraints and seasonal solar radiation and temperature limits for stable cultivation of dry direct …
In Morioka in May–October 2018, mean air temperature and solar radiation were 0.7 C and 0.28 MJ m −2 d −1 higher than the 30-year means. In September 2018, the air temperature was the same as the 30-year mean. In 2018, solar radiation was 0.9 MJ m −2 d
A Comprehensive Global Model of Broadband Direct Solar Radiation for Solar …
Solar radiation that affects the output power of solar array on stratospheric airship consists of the solar direct radiation, the scattered radiation and the reflected radiation.
Solar radiation modeling | Solargis
So when modelling solar radiation, various interactions of extra-terrestrial solar radiation with the Earth''s atmosphere, surface and objects are to be taken into account. The component that is neither reflected nor scattered, and which directly reaches the surface, is called direct radiation; this is the component that produces shadows.
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