太阳活动极小期使英国出现严冬

The UK and continental Europe could be gripped by more frequent cold winters in the future as a result of low solar activity,传奇私服, say researchers.

研究人员称，受太阳活动极小期的影响,传奇私服，英国与欧洲大陆未来将会频繁出现严冬气候,魔域私服。

A period of low solar activity could lead to more cold winters in the UK
They identified a link between fewer sunspots and atmospheric conditions（通风条件，大气条件） that "block" warm,传奇私服, westerly winds reaching Europe during winter months.

But they added that the phenomenon only affected a limited region and would not alter the overall global warming trend.

The findings appear in the journal Environmental Research Letters.

"By recent standards,香港六合彩, we have just had what could be called a very cold winter and I wanted to see if this was just another coincidence or statistically robust（强健的，粗野的） ," said lead author Mike Lockwood,六合彩, professor of space environment physics at the University of Reading, UK.

To examine whether there was a link,传奇私服, Professor Lockwood and his co-authors compared past levels of solar activity with the Central England Temperature (CET) record,充满微笑的世界 World of Smiles,传奇私服, which is the world's longest continuous（连续的，持续的） instrumental record of such data.

The researchers used the 351-year CET record because it provided data that went back to the beginning of the Maunder Minimum,传奇私服, a prolonged（延长的，拖延的） period of very low activity on the Sun that lasted about half a century.

The Maunder Minimum occurred in the latter half of the 17th Century - a period when Europe experienced a series of harsh winters,传奇私服,Work with the Now 把握现在, which has been dubbed（被成为） by some as the Little Ice Age. Following this, there was a gradual increase in solar activity that lasted 300 years.

Professor Lockwood explained that studies of activity on the Sun, which provides data stretching back（回溯到） over 9,000 years, showed that it tended to "ramp up（倾斜升温） quite slowly over about a 300-year period, then drop quite quickly over about a 100-year period".

He said the present decline started in 1985 and was currently about "half way back to a Maunder Minimum condition".

This allowed the team to compare recent years with what happened in the late 1600s.

"We found that you could accommodate（供应,关于爱情的散文，调解） both the Maunder Minimum and the last few years into the same framework," he told BBC News.