Results 31 to 40 of about 164,385 (278)

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

Prediction of solar cycle 24

open access: yes2015 International Joint Conference on Neural Networks (IJCNN), 2015
Accurate prediction of solar activity as one aspect of space weather phenomena is essential to decrease the damage from these activities on the ground based communication, power grids, etc. Recently, the connectionist models of the brain such as neural networks and neuro-fuzzy methods have been proposed to forecast space weather phenomena; however ...
Mahboobeh Parsapoor   +2 more
openaire   +2 more sources

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

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

Optimal Data Transfer of SEH-WSN Node via MDP Based on Duty Cycle and Battery Energy

open access: yesIEEE Access, 2021
Applications in wireless sensor networks (WSNs) are rapidly spreading out over the world. The one critical point of WSNs is energy consumption, where the transmitted data is limited by battery energy.
Kanok Charoenchaiprakit   +2 more
doaj   +1 more source

Predicting Solar Cycle 24 and beyond [PDF]

open access: yesSpace Weather, 2006
We use a model for sunspot number using low‐frequency solar oscillations, with periods 22, 53, 88, 106, 213, and 420 years modulating the 11‐year Schwabe cycle, to predict the peak sunspot number of cycle 24 and for future cycles, including the period around 2100 A.D.
Clilverd, Mark   +4 more
openaire   +2 more sources

Predicting the Sun's Polar Magnetic Fields with a Surface Flux Transport Model [PDF]

open access: yes, 2013
The Sun's polar magnetic fields are directly related to solar cycle variability. The strength of the polar fields at the start (minimum) of a cycle determine the subsequent amplitude of that cycle.
Hathaway, David H., Upton, Lisa
core   +1 more source

Size of the coming solar cycle 24 based on Ohl's Precursor Method, final estimate [PDF]

open access: yesAnnales Geophysicae, 2010
In Ohl's Precursor Method (Ohl, 1966, 1976), the geomagnetic activity during the declining phase of a sunspot cycle is shown to be well correlated with the size (maximum sunspot number Rz(max)) of the next cycle.
R. P. Kane
doaj   +1 more source

Thinning of the Sun's magnetic layer: the peculiar solar minimum could have been predicted

open access: yes, 2012
The solar magnetic activity cycle causes changes in the Sun on timescales that are relevant to human lifetimes. The minimum in solar activity that preceded the current solar cycle (cycle 24) was deeper and quieter than any other recent minimum.
Basu, Sarbani   +3 more
core   +1 more source

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