At that distance, it wasn't energy from the eruption itself that charged the ash, said study co-author Giles Harrison, a meteorologist at the University of Reading in the U.K..

来自英国雷丁大学的气象学家、火山灰共同研究者吉尔斯·哈里森认为如果以那么远的距离计算，火山喷发的能量本身不会是火山灰带电的原因。

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At that distance, it wasn't energy from the eruption itself that charged the ash, said study co-author Giles Harrison, a meteorologist at the University of Reading in the U. K.

来自英国雷丁大学的气象学家、火山灰共同研究者吉尔斯·哈里森认为如果以那么远的距离计算，火山喷发的能量本身不会是火山灰带电的原因。

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And Giles Harrison believes climate sceptics need to apply the same scepticism to the cosmic ray theory as they do to greenhouse warming - particularly those who say there are too many holes in our understanding of how clouds behave in the man-made greenhouse.

BBC: Sun and global warming: A cosmic connection?