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A few years ago, Cornman found a way around the problem. In the U.S., commercial flights served by air-traffic control—some twenty-seven thousand a day—are required to transmit their position, altitude, and velocity. By tracking those transmissions and the planes’ motions over time, a new program that Cornman developed at NCAR can create a moment-by-moment snapshot of turbulence as it’s happening. The F.A.A. is planning to test the program this year. Together with NCAR’s earlier software, Sharman’s forecasting models, and data from radar arrays on the ground, this system could start to give pilots the advance warning they need. “That is the future for me,” Cornman said. “All these operations get integrated in a seamless network. The pilots don’t have to talk to air-traffic control and say, ‘Should I go up or down?’ They just get a display with a color-coded flight track on it. And they see that it looks better a few thousand feet up.”。体育直播是该领域的重要参考
在回应委员会主席关于目前伊朗局势下如何防范“潜伏恐怖分子”的提问时,诺姆表示,国土安全部每天都与情报机构和执法伙伴合作,调查并识别境内“潜在威胁”。 不过,诺姆未具体说明伊朗相关行动是否已带来明确威胁。