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arXiv 1306.2770astro-ph.SRastro-ph.EP
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太阳辐照度变化与气候

Solar Irradiance Variability and Climate

S. K. Solanki, N. A. Krivova, J. D. Haigh

摘要:

太阳的亮度在所有观测到的时间尺度上都是变化的,越来越多的证据表明它对气候有影响。这种变化的幅度取决于波长,也可能取决于时间尺度。虽然这种变化的许多方面已经得到很好的确定,长期变化的确切幅度(超过太阳周期)和变化的光谱依赖性正在讨论中。太阳变化的主要驱动力被认为是太阳表面的磁性特征。在全球范围内,气候反应可以在很大程度上由简单的能量考虑来解释,但理解区域气候效应则更为困难。已经确定了这种驱动的有希望的机制,包括通过紫外线辐照对平流层的影响和与地面的动力耦合。在这里,我们提供了我们的知识的现状,以及主要的开放问题的概述。

英文摘要:

The brightness of the Sun varies on all time scales on which it has been observed, and there is increasing evidence that it has an influence on climate. The amplitudes of such variations depend on the wavelength and possibly on the time scale. Although many aspects of this variability are well established, the exact magnitude of secular variations (going beyond a solar cycle) and the spectral dependence of variations are under discussion. The main drivers of solar variability are thought to be magnetic features at the solar surface. The climate reponse can be, on a global scale, largely accounted for by simple energetic considerations, but understanding the regional climate effects is more difficult. Promising mechanisms for such a driving have been identified, including through the influence of UV irradiance on the stratosphere and dynamical coupling to the surface. Here we provide an overview of the current state of our knowledge, as well as of the main open questions.

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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