研究小组对最近的一次太阳活动谷年,也就是2008年至2010年的数据进行了分析。这段时间太阳活动出奇平静,而美国出现极端寒冬,欧洲部分地区还曾关闭机场,这也打乱了经济活动。
The researchers found that a reduction in ultraviolet(UV) radiation from the sun can affect high-altitude wind patterns in the Northern Hemisphere, triggering cold winters.
研究人员发现,太阳紫外线辐射水平的降低可以影响北半球高纬度的环流形态,导致冷冬。
"While UV levels won't tell us what the day-to-day weather will do, they provide the exciting prospect of improved forecasts for winter conditions for months and even years ahead. These forecasts play an important role in long-term contingency planning," Ineson, a climate scientist, said.
气候学家伊尼森说:“紫外线水平无法预测每日的天气状况,但可以使我们对未来数月甚至数年的冬季气候预测更加准确。这种预测可以使我们在较长时期内对极端天气做好准备。”
Ineson and colleagues from the Imperial College London and the University of Oxford used satellite data that more accurately measures UV radiation from the sun and found a much greater variability than previously thought.
伊尼森和来自帝国理工学院以及牛津大学的同事借助卫星数据,更为准确地测得太阳紫外线辐射,发现数据波动超过先前预计。
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