Results 11 to 20 of about 683,959 (300)
Solar activity explored with new wavelet methods [PDF]
Annales Geophysicae, 2005 In order to improve the forecasts of the impact of solar activity on the terrestrial environment on time scales longer than days, improved understanding and forecasts of the solar activity are needed.
H. Lundstedt, L. Liszka, R. Lundin
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WHERE WAS MEAN SOLAR TIME FIRST ADOPTED?
Journal of Astronomical History and Heritage, 2021 It is usually stated in the literature that Geneva was the first city to adopt mean solar time, in 1780, followed by London (or the whole of England) in 1792, Berlin in 1810 and Paris in 1816. In this short paper I will partially revise this statement, using primary references when available, and provide dates for a few other European cities.
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IEEE Access, 2021 Solar radiation intensity is intermittent and uncertain under the influence of meteorological conditions. Clustering them and obtaining high-precision and reliable probabilistic forecasting results play a vital role in the planning and management of solar power.
Zhendong Zhang +6 more
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Typical solar radiation year construction using k-means clustering and discrete-time Markov chain [PDF]
Applied Energy, 2017 Daily solar radiation (DSR) fluctuation and transition rules affect the design of the energy storage system and online control strategy of solar energy utilisation systems. However, the current synthesis methods for the typical meteorological year do not emphasise such features of DSR.
Shuai Li, Hongjie Ma, Weiyi Li
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The place of the Sun among the Sun-like stars [PDF]
, 2013 Context. Monitoring of the photometric and chromospheric HK emission data series of stars similar to the Sun in age and average activity level showed that there is an empirical correlation between the average stellar chromospheric activity level and the ...
Cessateur, G. +3 more
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Signature of the 27-day solar rotation cycle in mesospheric OH and H2O observed by the Aura Microwave Limb Sounder [PDF]
Atmospheric Chemistry and Physics, 2012 The mesospheric hydroxyl radical (OH) is mainly produced by the water vapor (H2O) photolysis and could be considered as a proxy for the influence of the solar irradiance variability on the mesosphere.
W. Schmutz +6 more
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Журнал інженерних наук, 2022 In this study, two supervised machine learning models (Extreme Gradient Boosting and K-nearest Neighbour) and four isotropic sky models (Liu and Jordan, Badescu, Koronakis, and Tian) were employed to estimate global solar radiation on daily data measured
Mbah O. M. +3 more
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Magnetic Cycles in a Convective Dynamo Simulation of a Young Solar-type Star [PDF]
, 2011 Young solar-type stars rotate rapidly and many are magnetically active; some undergo magnetic cycles similar to the 22-year solar activity cycle. We conduct simulations of dynamo action in rapidly rotating suns with the 3D MHD anelastic spherical ...
Allan Sacha Brun +43 more
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LONGTERM CHANGES OF SOLAR ACTIVITY ASYMMETRY
Odessa Astronomical Publications, 2016 We report results of analysis of the northsouth asymmetry of solar activity, solar magnetic fields. The analysis is based on the sunspot data, 1875–2015 (http://solarscience.msfc.nasa.gov/greenwch.shtml), largescale solar magnetic field (solar mean ...
U. M. Leiko
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Validation of an hourly resolved global aerosol model in answer to solar electricity generation information needs [PDF]
Atmospheric Chemistry and Physics, 2013 Solar energy applications need global aerosol optical depth (AOD) information to derive historic surface solar irradiance databases from geostationary meteorological satellites reaching back to the 1980's.
M. Schroedter-Homscheidt, A. Oumbe
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