Figures 9 a and 9 b show that the annual average DGSR ranges from 6 to 26 MJ/m 2, with a national-average value of 15.55 MJ/m 2 during 2013–2014. Spatial differences are evident across China, indicating that the solar radiation intensity in northern China (western China) is higher than that in southern China (eastern China).
The present study introduces the RF model, a popular and highly flexible machine learning algorithm, to estimate solar radiation across China at the national scale. The estimated DGSR is in good agreement with site observations across China, with mean R, RMSE, and MB values of 0.95, 2.34, and −0.04 MJ/m 2, respectively.
The results of both studies indicate that insolation is highest on the Tibetan Plateau and lowest in the Sichuan Basin, and suggest that the receipt of solar radiation in China is impacted by both seasonal and interannual variations.
Long-term solar radiation datasets were reconstructed across China. Global solar radiation in summer decreased by up to 1.83 W·m −2 ·decade −1. China’s PV power potential decreased by 1.69 kWh·m−2 ·decade −1 from 1961 to 2016. 30 provinces saw a 0.25–10.27% reduction in PV potential in the 2010s versus the 1960s.
Yao WX, Zhang CX, Wang X, Zhang ZG, Li X, Di H (2018) A new correlation between global solar radiation and the quality of sunshine duration in China. Energy Convers Manag 164:579–587 Zeng Y, Cao Y, Qiao X, Seyler BC, Tang Y (2019) Air pollution reduction in China: recent success but great challenge for the future.
Proving the distribution and changes of solar energy in China is a necessary foundation for the stable development of the PV industry (Kazaz and Adiguzel Istil 2019). Since the 1950s, the surface solar radiation has been on a downward trend, and this trend continued until the 1980s (global dimming) (Stanhill 2005).
Trend of surface solar radiation over China in relation to …
Atmospheric circulation is one of the most important climatic influences, directly affecting thermal conditions and precipitation in a given area through convection of various air masses [23].Moreover, it indirectly governs the balance between solar radiation energy and longwave radiation reaching the Earth''s surface by modulating factors like clouds and aerosols …
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Spatial and temporal characteristics of surface solar …
To accurately evaluate the nature of solar energy resources throughout China, we first need to understand the spatial and temporal distribution characteristics of solar radiation (He et al., 2003; Huang et al., 2017).
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Long-term variations of surface solar radiation in China from …
Annual SSR showed increasing trend during 2005–2014 in China. SSR negatively correlates with COT, AOD and relative humidity. Accurate observations of long-term surface solar radiation (SSR) are crucial for hydrological processes, agricultural production, and photovoltaic power generation.
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A new view on the trend of solar radiation in mainland China — …
As a kind of renewable energy, the development and utilization of solar energy are valued by many countries. 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 spatial patterns in solar radiation (SR) during 1961–2016 based on the data of 31 SR sites and …
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Long-term variations of surface solar radiation in China from …
Annual SSR showed increasing trend during 2005–2014 in China. SSR negatively correlates with COT, AOD and relative humidity. Accurate observations of long-term …
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Daily Global Solar Radiation in China Estimated From …
The present study introduces the RF model, a popular and highly flexible machine learning algorithm, to estimate solar radiation across China at the national scale. The estimated DGSR is in good agreement with site observations across China, with mean R, RMSE, and MB values of 0.95, 2.34, and −0.04 MJ/m 2, respectively.
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High-resolution assessment of solar radiation and energy potential in China
Western China is an optimal location for solar photovoltaic power plants. Global solar radiation (Rs) is a key parameter for determining the energy yields of solar photovoltaic (PV) systems. However, long-term Rs data are not available in most regions of China, impeding the management and development of PV systems.
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Spatial and temporal characteristics of surface solar radiation in ...
To accurately evaluate the nature of solar energy resources throughout China, we first need to understand the spatial and temporal distribution characteristics of solar radiation (He et al., 2003; Huang et al., 2017).
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Evaluation of Reanalysis Surface Incident Solar Radiation Data in China ...
Surface incident solar radiation (R s) is the basic energy of biological, physical and chemical processes, and the essential input parameters of biological physics models and hydrological ...
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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 spatial patterns in solar radiation (SR) during 1961–2016 based on the data of …
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Assessment of solar radiation resource and photovoltaic power …
China''s long-term average yearly PV power potential reached 285.00 kWh·m −2, indicating a spatial pattern of higher potentials in the northwestern and northern provinces, while lower values in the southeastern provinces.
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A dense station-based, long-term and high-accuracy dataset of …
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 …
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Assessment of solar radiation resource and photovoltaic power …
China''s long-term average yearly PV power potential reached 285.00 kWh·m −2, indicating a spatial pattern of higher potentials in the northwestern and northern provinces, …
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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 spatial patterns in …
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High-resolution assessment of solar radiation and energy …
Western China is an optimal location for solar photovoltaic power plants. Global solar radiation (Rs) is a key parameter for determining the energy yields of solar photovoltaic …
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Mapping of 10-km daily diffuse solar radiation across China from ...
Scientific Data - Mapping of 10-km daily diffuse solar radiation across China from reanalysis data and a Machine-Learning method Skip to main content Thank you for visiting nature .
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Solar radiation trend across China in recent decades: a revisit …
ation over China. A preliminary study of the solar radiation data collected at three observation stations in the Yangtze River Delta Region was done by Zhang et al. (2004), and a decreasing trend of surface solar radiation was found be-tween 1961 and 2000. Che et al. (2005) analyzed the vari-ations in annual mean solar radiation data collected ...
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A dense station-based, long-term and high-accuracy dataset of …
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 estimation, and the other is the model developed by Tang et al. (2018) for direct radiation estimation.
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Daily Global Solar Radiation in China Estimated From …
The RF-estimated DGSR is in good agreement with site observations across China, with an overall correlation coefficient (R) of 0.95, root-mean-square error of 2.34 MJ/m 2, and mean bias of −0.04 MJ/m 2.
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Assessment of solar radiation resource and photovoltaic power …
The annual mean global solar radiation in China from 1961 to 2016 was estimated at 174.36 W·m −2, with a decreasing trend of −0.83 W·m −2 ·decade −1. From the spatial pattern, northwestern provinces with high-quality solar radiation resources showed the least average decrease of −0.27 W·m −2 ·decade −1, while the provinces in and around the …
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Mapping of 10-km daily diffuse solar radiation across China from ...
Diffuse solar radiation (DSR) plays a critical role in renewable energy utilization and efficient agricultural production. However, there is a scarcity of high-precision, long-term, …
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Hourly 5-km surface total and diffuse solar radiation in China, …
We generated a 12-year (2007–2018) hourly dataset from Multi-functional Transport Satellite (MTSAT) satellite observations, including surface total solar radiation (R s) …
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Variability in Direct and Diffuse Solar Radiation Across China …
This study improved methods to better estimate surface direct (R dir) and diffuse (R dif) solar radiation from sunshine duration in ChinaThis study identified a spurious steeper downtrend in the observed R dir in China from 1958 to 1989, implying an overestimation of global dimming; R dir decreases by −3.52 W m −2 per decade, and R dif increases by 0.84 W m −2 …
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Effects of orientation and structure on solar …
The maximum solar radiation intensity difference reaches 47.35 W/m 2. The solar radiation intercepted by the walls of the greenhouse with a horizontal projection of 1.6 m and 1.8 m only has a little difference. But with …
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Temporal Evolution, Oscillation and Coherence Characteristics
The annual global solar radiation in China can be roughly divided into east and west sections by drawing a straight line between Xilinhot in Inner Mongolia and Tengchong in Yunnan. The annual global solar radiation in eastern China is weaker than that in western China as a whole. Figure 1 shows the distribution of annual global solar radiation in different regions …
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Mapping of 10-km daily diffuse solar radiation across China from ...
Diffuse solar radiation (DSR) plays a critical role in renewable energy utilization and efficient agricultural production. However, there is a scarcity of high-precision, long-term, and...
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Hourly 5-km surface total and diffuse solar radiation in China, …
We generated a 12-year (2007–2018) hourly dataset from Multi-functional Transport Satellite (MTSAT) satellite observations, including surface total solar radiation (R s) and diffuse radiation...
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Hourly 5-km surface total and diffuse solar radiation in China, …
Surface solar radiation is an indispensable parameter for numerical models, and the diffuse component contributes to the carbon uptake in ecosystems. We generated a 12-year (2007–2018) hourly ...
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