Chile is like a giant laboratory for unstable winds. When the jet stream crosses the Pacific, it slams into the Andes at an almost perfect right angle. On the Chilean side, the climate is sunny, stable, and dry. On the Argentinean side, fierce winds rise and fall above the peaks in mountain waves, tossing up rows of thin white clouds like foamy crests. In winter, the air below the peaks can plunge into the Uco Valley, in a stifling zonda wind. The sudden compression generates terrific heat, sending temperatures above a hundred degrees in Mendoza, Argentina. “It is very psychologically difficult,” Roberto Rondanelli, an atmospheric scientist at the University of Chile, told me, when we met in Santiago. “People get crazy in Mendoza.”
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从中国国家铁路集团有限公司获悉，截至3月2日，全国铁路春运累计发送旅客4.07亿人次。其中，3月2日，全国铁路发送旅客1320.8万人次，运输安全平稳有序。3月3日，全国铁路预计发送旅客1070万人次，计划加开旅客列车743列，截至3月3日9时，铁路12306累计发售春运期间火车票4.29亿张。（华夏时报）