arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.01908astro-ph.SRphysics.plasm-phphysics.space-ph
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太阳活动周期预测的进展:太阳黑子周期24-25的前景

Progress in Solar Cycle Predictions: Sunspot Cycles 24-25 in Perspective

Dibyendu Nandy

摘要:

太阳的动态活动-由在其内部工作的磁流体动力发电机机制维持-调节空间的电磁、微粒和辐射环境。虽然太阳活动在短时间尺度上的变化造成了空间天气,但缓慢的长期调制形成了空间气候的基础。空间天气影响各种依赖空间的技术,而空间气候影响行星大气和气候。在这些情况下,事先了解太阳的活动是很重要的。然而,预测太阳-恒星磁活动仍然是一个突出的挑战。在这篇评论中,对太阳黑子周期24和即将到来的周期25的预测进行了总结,并进行了严格的评估。分析表明,虽然基于不同技术的预测在太阳活动周期24- 25之间不一致,但基于物理学的太阳活动周期25的预测已经收敛,并表明太阳黑子周期25较弱。有人认为,这种基于物理学的预测的收敛是太阳周期可预测性的基本理解的进展。在此基础上,讨论了太阳活动周期预测中几个突出问题的解决方案。

英文摘要:

The dynamic activity of the Sun -- sustained by a magnetohydrodynamic dynamo mechanism working in its interior -- modulates the electromagnetic, particulate and radiative environment in space. While solar activity variations on short timescale create space weather, slow long-term modulation forms the basis of space climate. Space weather impacts diverse space-reliant technologies while space climate influences planetary atmospheres and climate. Having prior knowledge of the Sun's activity is important in these contexts. However, forecasting solar-stellar magnetic activity has remained an outstanding challenge. In this review, predictions for sunspot cycle 24 and the upcoming cycle 25 are summarized, and critically assessed. The analysis demonstrates that while predictions based on diverse techniques disagree across solar cycles 24--25, physics-based predictions for solar cycle 25 have converged and indicates a weak sunspot cycle 25. It is argued that this convergence in physics-based predictions is indicative of progress in the fundamental understanding of solar cycle predictability. Based on this understanding, resolutions to several outstanding questions related to solar cycle predictions are discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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