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arXiv 1209.0322astro-ph.SR
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太阳总辐照度的变化

On the variability of total solar irradiance

Jaan Pelt, Olavi Kärner

摘要:

了解大气顶部太阳总辐照度(TSI)的变化对于确定太阳对气候变化的影响至关重要。卫星测量的TSI数据仅在过去32年中可用。但是有机会根据观测到的太阳活动的变化来估计近似的每日TSI值。一种常见的方法是使用沃尔夫太阳黑子数的数据。从1978年开始的DAVOS TSI的一系列每日数据进行了比较,与每日的沃尔夫数的值和相应的估计每日汇总太阳黑子面积。我们的目标是使用已建立的相关性来后报早期的TSI值。现有的太阳活动数据使我们能够重现19世纪70年代的TSI粗略估计。

英文摘要:

Knowing the variability of total solar irradiance (TSI) at the top of the atmosphere is crucial for specifying solar influence to climate variability. Satellite measured TSI data are available only for the last 32 years. But there is an opportunity to estimate approximate daily TSI values on the basis of the observed variability of solar activity. A common approach is based using data for Wolf sunspot numbers. Series of daily data from the DAVOS based TSI starting from 1978 have been compared with daily values of Wolf numbers and with the corresponding estimates for daily summary sunspot area. Our goal is to use established correlations to hindcast earlier TSI values. The available solar activity data enabled us to reproduce rough TSI estimates back to the 1870's.

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