William Harwood
2026-03-03 00:00:00:0 （1994年10月9日中华人民共和国国务院令第167号发布 根据2011年1月8日《国务院关于废止和修改部分行政法规的决定》第一次修订 根据2017年10月7日《国务院关于修改部分行政法规的决定》第二次修订 2026年2月3日中华人民共和国国务院令第830号第三次修订）
，更多细节参见PDF资料
Turbulence is rarely that simple. It’s too scattered, too mercurial, too easily triggered by weather patterns that trigger other patterns in an endless cascade. “It’s not just one thing that’s going on,” Bob Sharman, an atmospheric scientist at NCAR, told me. “It’s not just atmospheric convection. It’s not just wind flowing over mountains. It’s everything going on all the time and interacting.” Sharman is one of the country’s preëminent authorities on turbulence prediction. The computer models that he has built can predict where rough air is most likely to arise. “The problem is,” he said, “when we go to meetings with the airline industry and suggest a probabilistic approach, a pilot will stand up and say, ‘No! I want you to tell me if there will be turbulence at this place, at this time.’ ” Sharman threw up his hands. “Nobody knows that. I understand that, in theory, you would want that. But, in practice, that is just not possible.”
1. It’s a bad time to move away from tech