Articles with "solar cycle" as a keyword



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Quiet and Disturbed Time Characteristics of Blanketing Es (Esb) During Solar Cycle 23

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Published in 2017 at "Journal of Geophysical Research"

DOI: 10.1002/2017ja023911

Abstract: A sporadic E layer with dense ionization blocks the upper ionospheric layers in ionosonde observations and it is called, blanketing sporadic E (Esb). Although earlier studies have demonstrated that Esb occurrence is dependent on solar… read more here.

Keywords: esb occurrence; solar activity; time; solar cycle ... See more keywords
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Solar cycle modulation of the relationship between the boreal spring Northern Atlantic Oscillation and the East and Southeast Asian summer climate

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Published in 2019 at "Meteorology and Atmospheric Physics"

DOI: 10.1007/s00703-019-00687-4

Abstract: Previous studies have suggested that boreal spring Northern Atlantic Oscillations (NAOs) exert a pronounced influence on the following East Asian summer monsoon (EASM) variability. This study reveals that the relationship between the spring NAO and… read more here.

Keywords: east southeast; solar cycle; summer; spring ... See more keywords
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An early prediction of 25th solar cycle using Hurst exponent

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Published in 2017 at "Astrophysics and Space Science"

DOI: 10.1007/s10509-017-3180-2

Abstract: The analysis of long memory processes in solar activity, space weather and other geophysical phenomena has been a major issue even after the availability of enough data. We have examined the data of various solar… read more here.

Keywords: analysis; solar cycle; cycle; 25th solar ... See more keywords
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A Study of the Earth-Affecting CMEs of Solar Cycle 24

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Published in 2017 at "Solar Physics"

DOI: 10.1007/s11207-017-1099-y

Abstract: Using in situ observations from the Advanced Composition Explorer (ACE), we have identified 70 Earth-affecting interplanetary coronal mass ejections (ICMEs) in Solar Cycle 24. Because of the unprecedented extent of heliospheric observations in Cycle 24 that has… read more here.

Keywords: affecting cmes; solar cycle; cycle; earth affecting ... See more keywords
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The Properties of Source Locations and Solar Cycle Distribution of GLEs During 1942–2017

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Published in 2020 at "Solar Physics"

DOI: 10.1007/s11207-020-01600-8

Abstract: During 1942–2017, 72 ground level events (GLEs) have been registered. Source location and solar cycle distribution of GLEs during 1942–2017 have been investigated. The GLEs that occurred during 1942–2017 are mainly distributed in the longitudinal… read more here.

Keywords: solar cycle; cycle; 1942 2017; southern hemisphere ... See more keywords
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Investigation of the Hemispheric Asymmetry in Solar Flare Index During Solar Cycle 21 – 24 from the Kandilli Observatory

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Published in 2020 at "Solar Physics"

DOI: 10.1007/s11207-020-01656-6

Abstract: The hemispheric asymmetry of the solar-flare index during 1976 – 2018 from the Kandilli Observatory is studied in this investigation. The temporal duration covers Solar Cycles 21 – 23 and almost the whole of Solar Cycle 24. Different methodologies,… read more here.

Keywords: index; flare index; solar cycle; asymmetry ... See more keywords
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Predicting the Shape of Solar Cycle 25 Using a Similar-Cycle Method

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Published in 2020 at "Solar Physics"

DOI: 10.1007/s11207-020-01701-4

Abstract: A similar-cycle method is applied in predicting the shape of Solar Cycle 25, through a more scientific definition to select similar cycles. Using the current solar minimum $R_{\mathrm{min}}(25)$ as a reference, the six most similar… read more here.

Keywords: similar cycle; solar cycle; cycle; predicting shape ... See more keywords
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Divergence and Vorticity of Subsurface Flows During Solar Cycles 23 and 24

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Published in 2021 at "Solar Physics"

DOI: 10.1007/s11207-021-01799-0

Abstract: We study the solar-cycle variation of the divergence and vorticity of subsurface horizontal flows from the surface to a depth of 16 Mm. The flows were derived with ring-diagram analysis applied to Michelson Doppler Imager… read more here.

Keywords: vorticity subsurface; solar cycle; divergence vorticity; cycle ... See more keywords
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A Dynamo-Based Prediction of Solar Cycle 25

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Published in 2021 at "Solar Physics"

DOI: 10.1007/s11207-021-01878-2

Abstract: Solar activity cycle varies in amplitude. The last Cycle 24 is the weakest in the past century. Sun’s activity dominates Earth’s space environment. The frequency and intensity of the Sun’s activity are accordant with the… read more here.

Keywords: cycle; based prediction; solar cycle; dynamo based ... See more keywords
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Long-Term Variations in Solar Activity: Predictions for Amplitude and North–South Asymmetry of Solar Cycle 25

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Published in 2022 at "Solar Physics"

DOI: 10.1007/s11207-022-01956-z

Abstract: In most of the solar cycles, activity in the northern and southern hemispheres peaks at different times. One hemisphere peaks well before the other and at least one of the hemispheric maxima frequently does not… read more here.

Keywords: sunspot; north south; cycle; activity ... See more keywords
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Modeling and analysis of GPS-TEC low latitude climatology during the 24th solar cycle using empirical orthogonal functions

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Published in 2017 at "Advances in Space Research"

DOI: 10.1016/j.asr.2017.06.048

Abstract: Abstract The Total Electron Content (TEC) is an essential component describing the temporal and spatial characteristics of the ionosphere. In this paper, an empirical orthogonal function (EOF) model is constructed by using ground based Global… read more here.

Keywords: solar cycle; climatology; gps tec; model ... See more keywords