How summer thunderstorms could be punching new holes in the ozone layer - CSMonitor.com

When people talk about global warming, "most people would have their backyard warmer than it is now," he says. But global warming "is not about that," he adds. "It's about these feedbacks that couple the system into irreversible paths forward. That's the primary concern."
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"To our huge surprise, we discovered that those convective storms were not simply distributing water in the upper troposphere," he says. Rather, they were lofting water vapor three to four miles into the stratosphere. Plumes often reached altitudes exceeding 60,000 feet.

So how high were those plumes reaching 1,000 years ago?