Analysis of 40 years of solar radiation data from China, 1961–2000
Geophysical Research Letters is an AGU journal publishing high-impact, innovative articles on major advances spanning all of the major geoscience disciplines. 1. Introduction [2] Measurements of solar radiation at the surface have great importance for the evaluations of climate change and global warming because they are potentially …
A new view on the trend of solar radiation in mainland China — …
To accurately provide a basis for the use of solar energy in mainland China, the optimized empirical model is adopted to analyze the variation trends and …
Evaluation of Reanalysis Datasets for Solar Radiation with In Situ Observations at a Location over the Gobi Region of Xinjiang, China
Solar radiation is the most important source of energy on the Earth. The Gobi area in the eastern Xinjiang region, due to its geographic location and climate characteristics, has abundant solar energy resources. In order to provide detailed scientific data supporting solar energy development in this area, we used ground-based data to …
First, the magnitude of solar radiation over China decreased by about −0.23 W m −2 yr −1 between 1961 and 2000, which is greatly less in magnitude than trend slopes estimated in previous studies (ranging over −0.41 ~ −0.52 W m −2 yr −1).
Direct Solar Radiation ___ and Diffuse Solar Radiation ___ Remark : (i) The vertical axis in W/m 2 represents the 1-minute average solar radiant power received on a horizontal surface. (ii) The data displayed is provisional. Only limited data validation has been ...
Prediction of solar radiation in China using different adaptive …
The results indicate that the ANFIS models provide better accuracy than the M5Tree and empirical method, and the models underestimate high radiation values for some stations, which may due to the differences in training and testing data ranges and distribution of the stations. Solar radiation is one of the major factors for agricultural, …
Analysis of 40 years of solar radiation data from …
[1] Trends in Chinese global radiation, direct horizontal radiation, diffuse radiation, clearness index, diffuse fraction and percentage of possible sunshine duration for the period 1961–2000 were …
Causes of the sharp increase in the time series of surface solar radiation in China …
During 1990–1993, a nation-wide replacement of the instruments measuring surface solar radiation (SSR) and a restructuring of SSR stations took place in China. Meanwhile, a sudden upward jump was noted in published composite time series of observed SSR ...
Mapping clear-sky surface solar ultraviolet radiation in China at 1 …
1. Introduction Ultraviolet (UV) radiation refers to the Solar Downward Surface Shortwave Radiation (DSSR) with the wavelength range of 100 nm–400 nm (Gueymard, 2004; Lucas et al., 2019).Although comprising a small fraction (approximately 8%) of the total solar ...
Primary Study on Regional Characteristics of Solar Radiation in China …
By using the data of global radiation,direct radiation and scatter radiation from 112 stations,and cloud cover from 729 stations in China during 1961 to 2000, the inter-decadal anomaly spatial distribution and change were analyzed.Based on the value of global radiation,we divided whole China into 5 radiation areas,and then analyzed their …
Estimation of losses in solar energy production from …
China is the largest worldwide consumer of solar photovoltaic (PV) electricity, with 130 GW of installed capacity as of 2017. China''s PV capacity is expected to reach at least 400 GW by 2030,...
High-resolution assessment of solar radiation and energy …
Western China is an optimal location for solar photovoltaic power plants. Abstract. Global solar radiation ( Rs) is a key parameter for determining the energy …
Impacts of wind stilling on solar radiation variability in China | Scientific Reports …
In China, however, recent studies 7,8 employing quality controlled SSR data have reported a leveling-off rather than brightening of solar radiation over the dimming period.
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Hierarchical identification of solar radiation zones in China
Taking measurements at the ground stations is the most reliable means of obtaining surface solar radiation data. Quality-controlled measurements are regarded as the solid foundation for the identification of solar radiation zones [25].The ground measurements used in this study were obtained from a monthly dataset provided by the …
New combined models for estimating daily global solar radiation based on sunshine duration in humid regions: A case study in South China ...
Boxplots with respect to performance of the 14 studied sunshine-based models are presented in Fig. 2.Overall, all the tested model performed well in estimating daily R s except for T1. The linear sunshine-based model proposed by Angstrom–Prescott [19], [20] has been found not suitable for application in humid regions due to the reduction …
Abstract. The lack of long-term and high-quality solar radiation data has been an obstacle for scientific and industrial fields. In this study, a dense station-based, long-term and high-accuracy dataset of daily surface solar radiation was developed using two surface radiation models. One is the model developed by Yang et al. (2006) for global radiation …
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 …
Prediction of solar radiation in China using different adaptive neuro-fuzzy methods …
Solar radiation is one of the major factors for agricultural, meteorological and ecological applications. In this study, two different optimized adaptive neuro-fuzzy inference systems ...
General models for estimating daily and monthly mean daily diffuse solar radiation in China''s subtropical monsoon climatic zone …
Following the application of the quality control procedure, the remaining solar radiation data were used for model calibration and validation. As described earlier in Section 1, numerous empirical models or correlations have been developed for the estimation of the diffuse solar radiation on a horizontal surface based on the clearness …
Merging ground-based sunshine duration observations with satellite cloud and aerosol retrievals to produce high-resolution long-term surface solar ...
Abstract. Although great progress has been made in estimating surface solar radiation (Rs) from meteorological observations, satellite retrieval, and reanalysis, getting best-estimated long-term variations in Rs are sorely needed for climate studies. It has been shown that Rs data derived from sunshine duration (SunDu) can provide reliable long-term variability, …
Effects of aerosols and water vapour on spatial-temporal variations of the clear-sky surface solar radiation in China …
The monthly averages of solar radiation at the top of the atmosphere and clear-sky SSR in China show a single-peak change, which is close to a normal distribution, indicating that the seasonal variation in clear-sky SSR is mainly determined by the radiation
Preliminary results of the solar radiation observation at mid-latitude station in China …
The article is devoted to the solar radiation observation at mid-latitude station in china. Observations of the solar and terrestrial radiation budget at the Earth''s surface are very ...
Daily Global Solar Radiation in China Estimated From High …
Based on observations from 2,379 meteorological stations along with scare solar radiation observations, the random forest (RF) model is employed to construct a …
Photosynthetically active radiation and its relationship with global solar radiation in Central China
Photosynthetically active radiation (PAR) and other solar components were observed for a period of 3 years at Wuhan, China to determine for the first time the temporal variability of PAR fraction [PAR/G (G here stands for global solar radiation)] and its dependence on different sky conditions in Central China. PAR, G and PAR/G showed …
Variations of Solar Radiation in Typical Resource Regions of China …
of solar radiation in winter from 1959 to 1987 in China and found that solar radiation decreased by 3.9% every 10 years during the period. Zha Liangsong [18] studied the spatio-temporal variation of surface solar radiation in China during 1971–1990, and 2
Estimating daily global solar radiation by day of year in China
1.. IntroductionSolar energy is one of the most important and promising renewable and sustainable energy. China has abundant solar energy resources and more than two-thirds of areas receive an annual total solar radiation that exceeds 5.9 GJ/m 2 with sunshine duration more than 2200 h [1] is meaningful to substitute solar energy for …
National Solar Radiation Database (NSRDB) | National Centers …
The National Solar Radiation Database (NSRDB) is an extensive collection of solar radiation data used by solar planners and designers, building architects and engineers, renewable energy analysts, and …
Evaluation of Reanalysis Datasets for Solar Radiation with In Situ ...
Solar radiation is the most important source of energy on the Earth. The Gobi area in the eastern Xinjiang region, due to its geographic location and climate characteristics, has abundant solar energy resources. In order to provide detailed scientific data supporting solar energy development in this area, we used ground-based data to …
Hierarchical identification of solar radiation zones in China
China has a vast land mass (approximately 9,600,000 km 2) and spans five climate zones, from the subtropical zone in the south to the cool temperate zone in the north.The monsoon climate plays a dominant role with a marked change in the wind direction between ...
Hourly 5-km surface total and diffuse solar radiation in China, …
In recent years, research on quantitative estimation of surface total solar radiation (R s) and diffuse solar radiation (R dif) has attracted growing interest in view …
Mapping of 10-km daily diffuse solar radiation across China from …
In conclusion, this study presents the most accurate dataset of diffuse solar radiation currently available for China, showing a consistently good correlation and homogeneity throughout...
The top global solar power potential hotspots | Reuters
China is by far the number one global solar power producer in terms of installed capacity, but is 150th on the list of nations ranked by the World Bank in terms of photovoltaic (PV) power potential.
