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Solar-Driven Photocatalytic Degradation of Dye Pollutant Using MnO<sub>2</sub>-Modified Biochar via Fenton-like Reactions. [PDF]
Polymers (Basel)Sandoval JAS +4 more
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Solar radiation and solar activity
Quarterly Journal of the Royal Meteorological Society, 1970AbstractUsing high‐altitude balloon soundings (1961 to 1968) and other data, it is shown that the most reliable maximum value of the solar constant is at present 1.94 cal cm−2 min−1, to an accuracy of 1 per cent. This value is observed with Wolf numbers between 80 and 100, below or above which the solar constant decreases. The maximum decrease does not
K. Ya. Kondratyev, G. A. Nikolsky
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Solar activity and the solar cycle
Advances in Space Research, 2003Abstract Solar activity prediction methods have been wide-ranging, mostly numerical, and essentially curve fitting. Thus for many years the search for physically based methods has remained elusive. Surprisingly, a new class of methods does seem to be making progress, and it relates to the structure of the field within the Sun and heliosphere.
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Reviews of Geophysics, 1973
The changes in the sun's surface and atmosphere, normally referred to as solar activity, are intimately linked to the production, transport, and dissipation of magnetic fields. The most obvious manifestations of the changes are sunspots, flares, and the changing corona. The complex of solar activity can be divided into two parts: (1) the problem of the
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The changes in the sun's surface and atmosphere, normally referred to as solar activity, are intimately linked to the production, transport, and dissipation of magnetic fields. The most obvious manifestations of the changes are sunspots, flares, and the changing corona. The complex of solar activity can be divided into two parts: (1) the problem of the
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Solar activity and the solar wind
Reviews of Geophysics, 1979The availability of in situ solar wind observations from the complete sunspot cycle 20 (1964–1976) suggests an examination of the changes in the character of the solar wind related to the solar cycle and comparison of these observed changes with those expected from earlier studies of solar‐terrestrial physics.
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IS THE SOLAR ACTIVITY CYCLE SYNCHRONIZED WITH THE SOLAR INERTIAL MOTION?
International Journal of Bifurcation and Chaos, 2000The 300 year record of the yearly sunspot numbers and numerically generated trajectory of the solar inertial motion (SIM) were subjects of a synchronization analysis. Phase synchronization of the sunspot cycle and a fast component of the SIM have been found and confirmed with statistical significance in three epochs (1727–1757, 1802–1832 and 1863–1922)
Milan Palus +4 more
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Reviews of Geophysics, 1983
During the past four years, the emphasis in much of the solar research in the United States gradually shifted from the structure of active regions to the nature of the impulsive phase of flares. The first two years of the review interval were dominated by completion of the Skylab data analyses, and especially by the Skylab Workshops on Solar Active ...
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During the past four years, the emphasis in much of the solar research in the United States gradually shifted from the structure of active regions to the nature of the impulsive phase of flares. The first two years of the review interval were dominated by completion of the Skylab data analyses, and especially by the Skylab Workshops on Solar Active ...
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1992
The magnetic cycle lasts 22 years, reversing polarity in each 11-year half. Spots reach the surface in emerging flux regions (EFR) and grow in complexity. Ephemeral regions bring considerable flux to the surface, but play no great role. Diffusion models of the cycle are discussed, but the low observed diffusion constant makes them a poor fit to reality.
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The magnetic cycle lasts 22 years, reversing polarity in each 11-year half. Spots reach the surface in emerging flux regions (EFR) and grow in complexity. Ephemeral regions bring considerable flux to the surface, but play no great role. Diffusion models of the cycle are discussed, but the low observed diffusion constant makes them a poor fit to reality.
openaire +2 more sources