Results 41 to 50 of about 164,385 (278)

Predictions of Solar Cycle 24 [PDF]

open access: yesSolar Physics, 2008
A summary and analysis of more than 50 predictions of the amplitude of the upcoming Solar Cycle 24 is presented. All of the predictions were published before solar minimum and represent our efforts to anticipate solar maximum at ever-earlier epochs. The consistency of the predictions within their assigned categories is discussed.
openaire   +1 more source

Lessons learned from predictions of Solar Cycle 24

open access: yesJournal of Space Weather and Space Climate, 2020
Solar Cycle 24 has almost faded and the activity of Solar Cycle 25 is appearing. We have learned much about predicting solar activity in Solar Cycle 24, especially with the data provided by SDO and STEREO.
Pesnell W. Dean
doaj   +1 more source

On Predicting the Solar Cycle using Mean-Field Models

open access: yes, 2007
We discuss the difficulties of predicting the solar cycle using mean-field models. Here we argue that these difficulties arise owing to the significant modulation of the solar activity cycle, and that this modulation arises owing to either stochastic or ...
Beer J.   +13 more
core   +1 more source

Long-term variation in the Sun's activity caused by magnetic Rossby waves in the tachocline [PDF]

open access: yes, 2015
Long-term records of sunspot number and concentrations of cosmogenic radionuclides (10Be and 14C) on the Earth reveal the variation of the Sun's magnetic activity over hundreds and thousands of years.
Ballester, J. L.   +6 more
core   +1 more source

Solar-cycle precursors and predictions [PDF]

open access: yesProceedings of the International Astronomical Union, 2012
AbstractThe sunspot number data during the past 400 years indicates that both the profile and the amplitude of the solar cycle have large variations. Some precursors of the solar cycle were identified aiming to predict the solar cycle. The polar field and the geomagnetic index are two precursors which are received the most attention.
openaire   +2 more sources

Probable Values of Current Solar Cycle Peak

open access: yesAdvances in Astronomy, 2012
An analysis of multiple linear regression method applied to solar cycles 4 to 23 using lagged values of smoothed monthly mean sunspot numbers as independent variables is presented.
V. M. Silbergleit
doaj   +1 more source

Structure and Dynamics of the 13/14 November 2012 Eclipse White-Light Corona [PDF]

open access: yes, 2014
Continuing our series of observations of the motion and dynamics of the solar corona over the solar-activity cycle, we observed the corona from sites in Queensland, Australia, during the 13 (UT)/14 (local time) November 2012 total solar eclipse.
Babcock, Bryce A.   +11 more
core   +3 more sources

Turbulent Pumping of Magnetic Flux Reduces Solar Cycle Memory and thus Impacts Predictability of the Sun's Activity

open access: yes, 2012
Prediction of the Sun's magnetic activity is important because of its effect on space environment and climate. However, recent efforts to predict the amplitude of the solar cycle have resulted in diverging forecasts with no consensus. Yeates et al. (2008)
Brandenburg   +10 more
core   +2 more sources

Statistical analysis of the performance and simulation of a two-axis tracking PV system [PDF]

open access: yes, 2009
The energy produced by a photovoltaic system over a given period can be estimated from the incident radiation at the site where the Grid Connected PV System (GCPVS) is located, assuming knowledge of certain basic features of the system under study.
Perpiñan Lamigueiro, Oscar
core   +2 more sources

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

open access: yesAdvanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy