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Changes in Total Solar Irradiance

Total solar irradiance, also called “TSI”,  is the total amount of energy coming from the sun at all frequencies. It is measured in watts per square metre (W/m2). Lots of folks claim that the small ~ 11-year variations in TSI are amplified by some unspecified mechanism, and thus these small changes in TSI make an…

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Sunspot-2192

Massive X class flare erupts from the sunspot 2192

As we previously mentioned on WUWT, the Sunspot 2192 which is as large as Jupiter had the potential of hurling large solar flares toward Earth. According to NASA’s spaceweather.com “Giant sunspot AR2192 has a ‘beta-gamma-delta’ magnetic field that harbors energy for strong explosions. NOAA forecasters estimate an 85% chance of M-class flares and a 45%…

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Solar Update October 2014

Guest essay by David Archibald This essay provides a series of graphs that describe the current state of the sun in context with its history. Figure 1: Oulu Neutron Count 1964 – 2014 Cosmic rays are pushed away, to some extent, from the inner planets of the solar system by the Sun’s magnetic field carried…

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Climate Dialogue about the sun

Guest blog by Marcel Crok Over at Climate Dialogue we have started a new discussion about the influence of the sun on the climate. People familiar with climate discussions know that the sun has been and still is a popular argument to explain at least part of the warming since 1750. This has to do…

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Learning From The Monsoon

Guest Post by Willis Eschenbach Inspired by a claim made on WUWT that A new study led by Professor K.M. Hiremath of the Indian Institute of Astrophysics shows the strong, possibly causative correlation between variations in solar activity (red curve) and in monsoon rainfall (blue curve) in Figure 1. I decided to see what I…

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Observing the Birkeland currents borne of the solar wind

  When the supersonic solar wind hits the Earth’s magnetic field, a powerful electrical connection occurs with Earth’s field, generating millions of amperes of current that drive the dazzling auroras. These so-called Birkeland currents connect the ionosphere to the magnetosphere and channel solar wind energy to Earth’s uppermost atmosphere. Solar storms release torrential blasts of solar…