Results 1 to 10 of about 580 (110)

Forecasting the number of sunspots for solar cycle 25 utilizing the facebook prophet model [PDF]

open access: yesScientific Reports
The solar cycle, also referred to as the solar magnetic activity cycle, represents a nearly periodic change in solar activity occurring approximately every 11 years, as evidenced by the observation of sunspot numbers.
H. I. Abdel Rahman, W. A. Badawy
doaj   +2 more sources

Can Sunspot Activity Affect the Population Dynamics of Cotton Bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)? [PDF]

open access: yesInsects
Whether there is a correlation between sunspots and an impact on insects has long been a subject of debate. As a worldwide pest, the cotton bollworm can feed on a variety of plants and cause great harm to agriculture.
Jian Huang, Xiaojun Wang
doaj   +2 more sources

Wavelet and cross correlation analysis on some climatology parameters of Nepal

open access: yesBibechana, 2021
This study has been performed to understand the relationship between sunspot numbers (SSN) with climatology related parameters like temperature and rainfall from 1901 to 2016.
Babu Ram Tiwari   +3 more
doaj   +3 more sources

Sunspot Number Prediction Using Gated Recurrent Unit (GRU) Algorithm

open access: yesIJCCS (Indonesian Journal of Computing and Cybernetics Systems), 2021
Sunspot is an area on photosphere layer which is dark-colored. Sunspot is very important to be researched because sunspot is affected by sunspot numbers, which present the level of solar activity. This research was conducted to make prediction on sunspot
Unix Izyah Arfianti   +4 more
doaj   +1 more source

Fractal Dimension and Maximum Sunspot Number in Solar Cycle [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2006
The fractal dimension is a quantitative parameter describing the characteristics of irregular time series. In this study, we use this parameter to analyze the irregular aspects of solar activity and to predict the maximum sunspot number in the following ...
R.-S. Kim   +4 more
doaj   +1 more source

Maximum Sunspot Numbers and Active Days [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2013
Parameters associated with solar minimum have been studied to relate them to solar activity at solar maximum so that one could possibly predict behaviors of an upcoming solar cycle.
Heon-Young Chang
doaj   +1 more source

Impact of sunspot activity on the rainfall patterns over Eastern Africa: a case study of Sudan and South Sudan

open access: yesJournal of Water and Climate Change, 2021
The relation between sunspots and rainfall patterns is still obscure in Africa, especially for Sudan and South Sudan. This research explores the response of rainfall to solar activity in eastern regions of Africa, with a case study in Sudan and South ...
Mostafa A. Mohamed   +1 more
doaj   +1 more source

Active Days around Solar Minimum and Solar Cycle Parameter

open access: yesJournal of Astronomy and Space Sciences, 2021
Utilizing a new version of the sunspot number and group sunspot number dataset available since 2015, we have statistically studied the relationship between solar activity parameters describing solar cycles and the slope of the linear relationship ...
Heon-Young Chang
doaj   +1 more source

On the Relation Between the Sun and Climate Change with the Solar North-South Asymmetry [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2009
We report the relation between the solar activity and terrestrial climate change with the solar north-south asymmetry. For this purpose, we calculate sliding correlation coefficients between sunspot numbers and earth`s mean annual temperature anomalies ...
I. H. Cho   +4 more
doaj   +1 more source

Solar Cycle 25 Prediction Using N-BEATS

open access: yesThe Astrophysical Journal, 2023
Solar activities lead to Sun variation with an 11 yr periodicity. The periodic variation affects space weather and heliophysics research. So it is important to accurately predict solar cycle variations. In this paper, we predicted the ongoing Solar Cycle
Xu Su   +4 more
doaj   +1 more source

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