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Complex network study of solar magnetograms
(MDPI, 2022)
In this paper, we study solar magnetic activity by means of a complex network approach. A complex network was built based on information on the space and time evolution of sunspots provided by image recognition algorithms ...
Solar Cycle Propagation, Memory, and Prediction: Insights from a Century of Magnetic Proxies
(IOP Publishing, 2013-04-02)
The solar cycle and its associated magnetic activity are the main drivers behind changes in the interplanetary environment and Earth’s upper atmosphere (commonly referred to as space weather). These changes have a direct ...
A search for an association between the equatorial stratospheric QBO and solar UV irradiance
(American Geophysical Union, 2003-12)
The QBO of the zonal wind in the equatorial stratosphere between 15 and 70 hPa is analyzed in connection to the solar UV flux. F10.7 is used as a UV proxy after filtering out its long‐term variations. A running correlation ...
On the detectability of solar X-ray flares using very low frequency sudden phase anomalies
(Pergamon-elsevier Science LtdOxfordInglaterra, 2006)
Predictions of the Maximum Amplitude, Time of Occurrence, and Total Length of Solar Cycle 24
(Springer, 2012-06)
In this work we predict the maximum amplitude, its time of occurrence, and the total length of Solar Cycle 24 by linear regression to the curvature (second derivative) at the preceding minimum of a smoothed version of the ...
Forecasting the parameters of sunspot cycle 24 and beyond
(Elsevier, 2009-02)
Solar variability is controlled by the internal dynamo which is a non-linear system. We develop a physical-statistical method for forecasting solar activity that takes into account the non-linear character of the solar ...
Effect of solar cycle 23 in foF2 trend estimation
(Springer, 2014-09)
The effect of including solar cycle 23 in foF2 trend estimation is assessed using experimental values for Slough (51.5°N, 359.4°E) and Kokobunji (35.7°N, 139.5°E), and values obtained from two models: (1) the Sheffield ...
Using the Dipolar and Quadrupolar Moments to Improve Solar-Cycle Predictions Based on the Polar Magnetic Fields
(Amer Physical Soc, 2013-07-26)
The solar cycle and its associated magnetic activity are the main drivers behind changes in the interplanetary environment and Earth?s upper atmosphere (commonly referred to as space weather and climate). In recent years ...
Solar-terrestrial, ionospheric and natural phenomena studies using the South America VLF network (SAVNET)
(Pergamon-elsevier Science LtdOxfordInglaterra, 2011)
Effect of the Inclusion of Solar Cycle 24 in the Calculation of foF2 Long-Term Trend for Two Japanese Ionospheric Stations
(Birkhauser Verlag Ag, 2019-08)
One of the main ionization sources of the F2 region of the Earth’s ionosphere is the solar EUV irradiance accounting for * 90% of its variability during quiet time. Consequently, prior to long-term trend estimations solar ...