Results 41 to 50 of about 1,248,900 (279)
SPECTRAL ESTIMATION OF TIME SERIES
Современная наука и инновации, 2022 As a result of spectral analysis, namely, the fast Fourier transform (FFT) method, the wavelet transform method, the Hilbert-Huang transform method, certain periods of the time series representing the monthly average values of the sunspot numbers were ...
L. N. Dzhimbeeva +5 more
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, 2022 Iterative code for computation of sunspot numbersIf you use this software, please cite it as ...
Svanda, Michal
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Quantitative Forecasting of Sunspot Numbers: Statistical Methods and Deep Learning Models [PDF]
EPJ Web of ConferencesForecasting sunspot numbers is fundamental for understanding solar variability and its implications for space weather. However, most existing studies predominantly rely on Total Sunspot Number (TSN), thereby neglecting hemispheric asymmetry and limiting ...
Singha Tiasha +3 more
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Letter to the Editor
On the use of the sunspot number for the estimation of past solar and upper atmosphere conditions from historical and modern auroral observations [PDF]
Annales Geophysicae, 2005 In this short contribution the use of different sunspot numbers for the estimation of past solar and upper atmosphere conditions from historical and modern auroral observations realised by Schröder et al. (2004) is analysed.
Vaquero
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Applied Artificial Intelligence, 2022 Solar activity has significant impacts on human activities and health. One most commonly used measure of solar activity is the sunspot number. This paper compares three important non-deep learning models, four popular deep learning models, and their five
Yuchen Dang, Ziqi Chen, Heng Li, Hai Shu
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Time series modelling of Annual Maximum Sunspot Numbers [PDF]
We consider the prediction of Solar cycles from the sunspot numbers (yearly averages and extreme values) based on an AR model. We focus on a time series of annual maximum sunspot numbers, and we also consider the estimation of a probability distribution ...
Tanaka, Minoru
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Directional time-distance probing of model sunspot atmospheres [PDF]
, 2015 A crucial feature not widely accounted for in local helioseismology is that surface magnetic regions actually open a window from the interior into the solar atmosphere, and that the seismic waves leak through this window, reflect high in the atmosphere ...
Przybylski, Damien +3 more
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Sunspot Observations at the Eimmart Observatory: Revision and Supplement [PDF]
, 2023 Digital images of sunspot drawings of the archives of Georg Christoph Eimmart stored at the National Library of Russia, St. Petersburg, are analyzed to obtain sunspot-group numbers and sunspot areas as well as heliographic positions. Overall, more than a
Nadezhda Zolotova +3 more
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Towards a Compositional Framework for Describing Human Phenotypes
Advanced Science, EarlyView.The Phenotype Assembly Method (PhenoAM) decomposes phenotype variables into measurable Features and typed Qualifiers, enabling standardized, machine‐readable Phenome Data Elements (PhenoDEs) that preserve measurement context. Applied in the International Human Phenome Project (IHPP), the framework yields 58 371 PhenoDEs and supports component‐level ...
Wanting Hu +11 more
wiley +1 more source
, 2006 From sunspot drawings provided by the Kanzelhöhe Solar Observatory, Austria, and the Skalnaté Pleso Observatory, Slovak Republic, we extracted a data catalogue of hemispheric Sunspot Numbers covering the time span 1945-2004.
M. Temmer +7 more
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