With two active regions (brighter areas) in profile almost diametrically apart, SOHO got a good view of the extensive areas above the Sun influenced by the powerful magnetic fields associated with the two regions. This wavelength of extreme ultraviolet light “sees” ionized iron heated to 2 million degrees in the upper solar atmosphere. The hotter the temperature, the higher you look in the solar atmosphere. Although the image is rather diffuse, we can more clearly see in other wavelengths that material is tracing arcs of magnetic field lines looping above the active regions. Just a few months ago, the large-scale solar magnetic field was like that from a bar magnet, and flattened along the Sun's equator. Now, it's not much more complicated in shape, but it's tilted, as seen by the position of these two regions — a clear giveaway[color=#ff0000] that the rise to solar maximum has begun[/color].
Cosa più importante, la dimensione del Sole nel diagramma originale del 2012, ora è aumentata, comprendendo l'orbita di Venere e Mercurio.
Predicting the strength of solar cycle 24 using a flux-transport dynamo-based tool
We construct a solar cycle strength prediction tool by modifying a calibrated flux-transport dynamo model, and make predictions of the amplitude of upcoming solar cycle 24. We predict that cycle 24 will have a 30–50% higher peak than cycle 23, in contrast to recent predictions by Svalgaard et al. and Schatten, who used a precursor method to forecast that cycle 24 will be considerably smaller than 23. The skill of our approach is supported by the flux transport dynamo model's ability to correctly 'forecast' the relative peaks of cycles 16–23 using sunspot area data from previous cycles.