Rita Roberts, of the National Center for Atmospheric Research, in Colorado, and Frederic Fabry, of McGill University in Canada, think they have found out how to do this.

• 来自科罗拉多的国家大气研究中心的丽塔?罗伯茨，和来自加拿大的麦基尔大学的弗雷德里克?法布里认为他们找到了解决办法。