Solar radiation and weather patterns
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Solar Radiation and Weather Patterns: Key Influences
Relationship Between Solar Radiation, Temperature, and Humidity
Research consistently shows that solar radiation is closely linked to atmospheric temperature and relative humidity. Higher temperatures generally correspond to increased solar radiation, while higher relative humidity tends to reduce the amount of solar radiation reaching the surface. This pattern has been observed in equatorial regions like Brunei Darussalam and in subtropical locations such as Damak, Nepal, where solar radiation peaks in the warmer, drier months and drops during cooler, more humid periods Yazdani2016Shrestha2019. Wind speed, on the other hand, has little direct influence on solar radiation levels .
Weather Patterns, Cloud Cover, and Solar Radiation
Cloud cover and weather types are major factors affecting the daily and hourly patterns of solar radiation. Studies have found that clear days allow for higher solar radiation, while increased cloudiness and precipitation reduce it. In China, specific synoptic weather patterns—such as those with high cloud cover and water vapor—are linked to significant reductions in surface solar radiation, while dry, clear airflows can increase it . The temporal variation of solar radiation is also strongly tied to cloud cover and sunshine duration, with distinct daily and seasonal patterns identified through clustering and regression models .
Solar Radiation Variability and Climate Zones
Solar radiation patterns vary significantly across different climate zones. In tropical, arid, and temperate regions, clustering techniques reveal that solar radiation correlates with both climate subtypes and geographic factors. For example, tropical zones with irregular precipitation show more variable solar radiation, while arid zones with winter rainfall favor more predictable daily patterns. These differences are important for selecting appropriate forecasting models and understanding regional solar energy potential .
Solar Radiation’s Role in Weather and Climate Systems
Solar radiation is a primary driver of Earth’s weather and climate systems. Variations in solar radiation influence the distribution of heat, shape global air and ocean currents, and modulate large-scale atmospheric circulation. During periods of higher solar activity, the troposphere experiences increased heating and moistening, which can alter weather patterns, especially in the tropics and mid-latitudes Hissou2023Gleisner2003Clayton1920. Long-term changes in solar radiation are also linked to broader climate trends and can impact regional weather patterns over decades Gleisner2003Zeng2024.
Machine Learning and Solar Radiation Forecasting
Accurate prediction of solar radiation is essential for energy planning and climate modeling. Machine learning models, such as artificial neural networks, support vector machines, and gradient boosting, have shown high accuracy in forecasting solar radiation using weather parameters like temperature, humidity, cloud cover, and precipitation. These models are especially valuable in regions with limited meteorological data and can adapt to different weather and pollution conditions, improving the reliability of solar energy resource assessments Yazdani2016Hissou2023Yang2023+1 MORE.
Conclusion
Solar radiation is intricately connected to weather patterns, with temperature, humidity, cloud cover, and atmospheric circulation all playing significant roles in its variability. Understanding these relationships is crucial for climate studies, renewable energy planning, and weather forecasting. Advances in machine learning are enhancing our ability to predict solar radiation under diverse weather conditions, supporting more effective use of solar resources worldwide Yazdani2016Shrestha2019Hissou2023+7 MORE.
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