Results 261 to 270 of about 4,611,274 (296)

Solar Activity, Solar Cycle, Coordinates

1996
The structure and the dynamics of the upper atmosphere depend on the energy input from the Sun via extreme ultraviolet and X-ray radiation (XUV) and on the properties of the solar wind. Contrary to the good temporal stability of the Sun’s radiation intensity at longer wavelengths (from infrared to near ultraviolet) the energy output of the Sun is ...
Walter Dieminger, Gerd K. Hartmann, Reinhart Leitinger   +2 more
openaire   +1 more source

Energy-Life cycle assessment on applying solar technologies for greenhouse strawberry production

, 2019
Climate change impacts, limited fossil fuel resources and escalating energy demand result in the use of clean and renewable energies such as solar thermal energy for sustainable agricultural production. In this study, the utilization of photovoltaic (PV)
Fatemeh Hosseini-Fashami, A. Motevali, Ashkan Nabavi‐Pelesaraei, Seyyed Jafar Hashemi, K. Chau   +4 more
semanticscholar   +1 more source

Solar Wind Sources and Their Variations Over the Solar Cycle

Space Science Reviews, 2007
In this paper I will briefly summarize the present status of our knowledge on the four different sorts of solar wind, their sources and their short- and long-term variations. First: the fast solar wind in high-speed streams that emerges from coronal hole regions.
openaire   +2 more sources

Missing solar cycle hypothesis and basic statistical regularities of solar cycles

Geomagnetism and Aeronomy, 2012
The basic statistical properties of solar cycles, including the Gnevyshev-Ol’ rule, the Waldmeier effect, and the amplitude-period effect, are tested using data on the number of sunspot groups for 1700–1996, considering the hypothesis about a missing solar cycle in the late 18th century. The results show that the division of the long cycle of 1784–1800
openaire   +1 more source

Consistency of seven different GNSS global ionospheric mapping techniques during one solar cycle

Journal of Geodesy, 2018
D. Roma-Dollase, M. Hernández‐Pajares, A. Krankowski, K. Kotulak, R. Ghoddousi-Fard, Yunbin Yuan, Zishen Li, Hongping Zhang, C. Shi, Cheng Wang, J. Feltens, P. Vergados, A. Komjáthy, S. Schaer, A. García‐Rigo, J. M. Gómez-Cama   +15 more
semanticscholar   +1 more source

The solar wind throughout the solar cycle

2008
The existence of solar corpuscular radiation (SCR) was conjectured by Biermann (1951) based on the fact that the ion tails of comets always point radially away from the Sun. Earlier it had been thought that this was due to solar radiation pressure, but when the relevant cross-sections were measured it became clear that these were far too small. This is
openaire   +1 more source

A Dynamo-based Forecast of Solar Cycle 25

Solar Physics, 2019
François Labonville, P. Charbonneau, A. Lemerle   +2 more
semanticscholar   +1 more source

Insignificant influence of the 11-year solar cycle on the North Atlantic Oscillation

Nature Geoscience, 2019
G. Chiodo, Jessica Oehrlein, L. Polvani, J. Fyfe, Anne K. Smith   +4 more
semanticscholar   +1 more source

A Decline Phase Modeling for the Prediction of Solar Cycle 25

Solar Physics, 2019
Y. B. Han, Z. Yin
semanticscholar   +1 more source

An Early Prediction of the Amplitude of Solar Cycle 25

Solar Physics, 2018
W. Pesnell, K. Schatten
semanticscholar   +1 more source