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首页> 外文期刊>Aerospace science and technology >Modern approach to study trends in global ultraviolet index maps variation over solar cycles by the complementary use of time series, mathematical metrics and artificial neural networks
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Modern approach to study trends in global ultraviolet index maps variation over solar cycles by the complementary use of time series, mathematical metrics and artificial neural networks

机译:通过补充使用时间序列,数学指标和人工神经网络来研究全球紫外线指数图随太阳周期变化的现代方法

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摘要

The information on how much total solar energy and its ultraviolet component can be acquired from the Sun at particular locations is vital for climatology, ecology, health-care but also for some branches of modern industry (e.g. constructions, solar power technologies, materials science, pharmacy, optometry and optics). The Discrete Fourier Transform applied to study UV index (UVI) time series in the last solar cycle at selected locations (71 in Europe and 114 in the World) has revealed periodicity and correlation between the amplitude and latitude. The main frequency peak with amplitude varying from 0.963 to 5.625 shows the UVI periodicity of 315-316 days at each location. The greatest variation in UVI occurs at two latitude bands distanced by 65 (Northern hemisphere from 30 to 50 and Southern hemisphere from 50 to 20); the lowest variation is observed near the equatorial region.
机译:有关在特定位置可以从太阳获取多少太阳能及其紫外线成分的信息,对于气候,生态学,医疗保健以及现代工业的某些部门(例如建筑,太阳能技术,材料科学,药学,验光和光学)。离散傅立叶变换用于研究选定位置(欧洲的71个和世界的114个)的最后一个太阳周期的紫外线指数(UVI)时间序列,揭示了振幅和纬度之间的周期性和相关性。振幅在0.963至5.625之间变化的主频率峰值显示每个位置315-316天的UVI周期。 UVI的最大变化发生在相距65的两个纬度带(北半球从30到50,南半球从50到20);在赤道区域附近观察到最低的变化。

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