纪录片《全球怪象》 第25期：紫外辐射（在线收听）

Sun spots are important

太阳黑子很重要

because scientists now know

因为科学家现在知道

that they can affect the British climate.

它们会影响英国的气候

The Sun's spots, shown here in white,

太阳黑子 这里以白色显示

come and go on an 11-year cycle.

以11年为周期循环出现

When there are no spots,

当没有黑子时

when solar activity is low,

当太阳活动较少时

there is a reduction in the amount of ultraviolet light

射向地球的紫外辐射

hitting the Earth.

数量减少

Low solar activity has the potential to disrupt the jet stream

太阳活动变弱可能会影响高空急流

and the flow of warm air over Britain,

以及英国上空热空气的流动

allowing the wind to blow cold winter air from the east.

使得在冬季 东边的冷空气可以吹过来

Our work suggests that, statistically,

我们的研究表明 从统计上来看

if you have low solar activity

太阳活动较少时

you will get more of these cold winters.

会导致更多这样的寒冬出现

And it seems to be a phenomenon that's very much prevalent in Europe

这种现象似乎在欧洲更为普遍

but not really so significant anywhere else.

在其他地方并不是这样显著