Normally, March averages 42.5 degrees across the country. This year, the average was 51.1, which is closer to the average for April. Only one other time — in January 2006 — was the country as a whole that much hotter than normal for an entire month.
In March, at least 7,775 weather stations across the nation broke daily high temperature records and another 7,517 broke records for night-time heat. Combined, that's more high temperature records broken in one month than ever before, Crouch said.
"When you look at what's happened in March this year, it's beyond unbelievable," said University of Victoria climate scientist Andrew Weaver.
美国今年天气十分暖和,特别是三月以来,温度居高不下。这不仅是破纪录的高温,而且热度灼人。
据美国国家海洋和大气管理局的测算,美国南部48个州今年三月的温度比正常水平高了8.6华氏度,前三个月的平均温度比平均水平高出了6华氏度。这远远超出了历史记录水平。
美国今年是如此反常,让一些气候学家感到担忧,此前他们已经对全球变暖提出过警告。一位气候学家称,这就像服用了类固醇兴奋剂的棒球运动员刷新历史记录一样,事有异常。
专门研究极端天气的气候学家杰里•米尔说:“大家都有这种不安的感觉。这太诡异了,情况不妙。这是一种让人无法开怀享受的愉悦。你在户外享受着这美好的三月天气,但是你知道,这不是件好事。”米尔在科罗拉多州博尔德的国家气候研究中心工作。
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