Results 31 to 40 of about 4,261,327 (287)

Research on the Effect of Data Assimilation for Three‐Dimensional MHD Simulation of Solar Wind

open access: yesSpace Weather, 2023
As an important part of space weather forecasting, the prediction of solar wind parameters in the near‐Earth space is particularly significant. The introduction of data assimilation (DA) method can improve the reliability of numerical prediction. In this
Hanke Zhang, Fang Shen, Yi Yang
doaj   +1 more source

Prediction of solar cycle 25: applications and comparison

open access: yesRendiconti Lincei. Scienze Fisiche e Naturali, 2023
AbstractSolar activity affects the heliosphere in different ways. Variations in particles and radiation that impact the Earth’s atmosphere, climate, and human activities often in disruptive ways. Consequently, the ability to forecast solar activity across different temporal scales is gaining increasing significance.
Valentina Penza   +4 more
openaire   +2 more sources

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

Solar cycle dependence of scaling in solar wind fluctuations [PDF]

open access: yes, 2008
In this review we collate recent results for the statistical scaling properties of fluctuations in the solar wind with a view to synthesizing two descriptions: that of evolving MHD turbulence and that of a scaling signature of coronal origin that ...
B. Hnat   +6 more
core   +2 more sources

Impact of nonlinear surface inflows into activity belts on the solar dynamo

open access: yesJournal of Space Weather and Space Climate, 2020
We examine the impact of surface inflows into activity belts on the operation of solar cycle models based on the Babcock–Leighton mechanism of poloidal field regeneration.
Nagy Melinda   +2 more
doaj   +1 more source

Prediction Methods in Solar Sunspots Cycles [PDF]

open access: yesScientific Reports, 2016
AbstractAn understanding of the Ohl’s Precursor Method, which is used to predict the upcoming sunspots activity, is presented by employing a simplified movable divided-blocks diagram. Using a new approach, the total number of sunspots in a solar cycle and the maximum averaged monthly sunspots number Rz(max) are both shown to be statistically related to
openaire   +2 more sources

Neural network prediction of solar cycle 24 [PDF]

open access: yesResearch in Astronomy and Astrophysics, 2011
The ability to predict the future behavior of solar activity has become of extreme importance due to its effect on the near Earth environment. Predictions of both the amplitude and timing of the next solar cycle will assist in estimating the various consequences of Space Weather. The level of solar activity is usually expressed by international sunspot
Ajabshirizadeh, A.   +2 more
openaire   +2 more sources

The effect of colour on the thermal performance of building integrated solar collectors [PDF]

open access: yes, 2010
The use of solar collectors with coloured absorbers for water heating is an area of particular interest when considering their integration with buildings.
Carson, James K.   +2 more
core   +1 more source

Relation between Latitude-dependent Sunspot Data and Near-Earth Solar Wind Speed

open access: yesThe Astrophysical Journal, 2023
Solar wind is important for the space environment between the Sun and the Earth and varies with the sunspot cycle, which is influenced by solar internal dynamics.
Qirong Jiao   +3 more
doaj   +1 more source

Gradual onset of the Maunder Minimum revealed by high-precision carbon-14 analyses

open access: yesScientific Reports, 2021
The Sun exhibits centennial-scale activity variations and sometimes encounters grand solar minimum when solar activity becomes extremely weak and sunspots disappear for several decades.
Hiroko Miyahara   +6 more
doaj   +1 more source

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