The changes in the planet's energy budget caused by solar variations are at least ten times smaller in comparison.

相比之下，由太阳突变导致的地球能量收支变化至少小了十倍。

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In order to study the effect of Sun on climate change and earthquake eruption, it is necessary to know the parameters of solar variations.

为了研究太阳活动对气候变化、地震爆发中起到的作用，就必须先认识太阳长期活动的变化参量。

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Also included will be any variations that have arisen from volcanic activity, solar activity, and, possibly, human activities.

这还将包括火山活动、太阳活动，可能还有人类活动引起的任何变化。

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That was when Danish physicist, Henrik Svensmark, decided to explore the matter after coming across a 1991 paper by fellow Danes Eigil Friis-Christensen and Knud Lassen that charted solar variations and global surface temperatures since 1860.

FORBES: Sorry, But With Global Warming It's The Sun, Stupid

"The possibility that current climate models underestimate the effect of solar variations on climate is probably the single most contentious issue in climate research at the moment, " said Dr Myles Allen of the department of physics at Oxford University.

BBC: UK seeks to go it alone in space

Joanna Haigh, a solar physicist at Imperial College London, has spent a fair bit of research time investigating mechanisms that could potentially amplify solar changes into meaningful temperature variations on human timescales on Earth.

BBC: Solar predictions bring heat and light