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Sunspots and Space Storms

15 Jan 2019, 17:35 UTC
Sunspots and Space Storms
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Title: Different contributions to space weather and space climate from different big solar active regionsAuthors: Jie Jiang, Qiao Song, Jing-Xiu Wang, and Tunde BaranyiFirst Author’s Institution: School of Space and Environment, Beihang University, Beijing, ChinaStatus: Accepted for publication in the Astrophysical Journal [open access on arXiv]The Sun, Earth’s closest stellar neighbor, conducts many processes we still don’t fully understand, many of which affect Earth directly. Space weather events are short-term changes in near-Earth space that are driven by solar activity. These events impact Earth and can negatively affect the technology we use (e.g., telecommunications satellites). Space climate refers to long-term variations in solar activity (i.e., the solar cycle, or the change in solar magnetic activity every 11 years). These long-term variations can also affect Earth, most notably our terrestrial climate.To observationally study space weather and space climate, astronomers observe structures on the solar surface that affect short-term and long-term activity. The authors of today’s paper focus on structures known as active regions. Solar active regions are rooted in concentrations of strong magnetic field, are a major source of activity that contributes to both space weather and space climate, and are an ideal environment in which to observe these variations.
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