什么是“炸弹旋风”? 分享到
What Is a ‘Bomb Cyclone?’ 2018-01-0662741

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This is What’s Trending Today…
这里是本期今日热点节目……
When it comes to weather, it is hard to sound more frightening than to call a storm a “bomb cyclone.”
讲到天气的时候,没有什么比把一场风雪称为“炸弹旋风”更恐怖的了。
But that is how weather experts are describing a huge winter storm that is hitting the U.S. East Coast this week.
但是气象专家就是用这个词来描述美国东海岸本周正在遭受的冬日暴风雪的。
From the northern state of Maine to Georgia in the south, the storm has brought high winds and heavy snow.Schools and government offices have closed because of the weather and thousands of flights have been cancelled.
从北部缅因州到南部乔治亚州,这场暴风雪带来了狂风和大雪。学校和政府都因这种恶劣天气而关闭,数千里之外的航班也都取消了。
But as fearsome as the storm is, it probably will not be as “explosive” as the name sounds.
虽然这场暴风雪非常吓人,但并不像名字中说的那样具有“爆炸性”。
Weather experts, or meteorologists, have used the term “bomb” for storms for many years.The word has a clear definition for weather experts, says University of Oklahoma meteorology professor Jason Furtado.
气象专家用“爆炸”这一术语描述风雪已有许多年。这个词对于气象专家来说有明确的含义,俄克拉荷马大学气象学教授说道。
After “bomb cyclone” appeared in a Washington Post story this week, the weather term became popular, or “blew up,” on social media.It became a top trending topic. The same thing happened four years ago with the phrase “polar vortex” -- another long-used weather term that was not well known to the public.
本周,“炸弹旋风”出现在《华盛顿邮报》报道中后,这个天气术语开始在社交媒体上流行起来,成为热点话题。四年前,“极地漩涡”这个词也是这样,这个词也是气象术语,但并不为公众所知。
The technical term is “Bombogenesis.”Bomb cyclone is a shorter way of saying it, which is better for social media, says meteorologist Ryan Maue.He helped popularize “polar vortex” in 2014.
专业的术语是“Bombogenesis”。“炸弹旋风”是它的简称,更适合社交媒体,气象学家瑞恩·马钨表示。2014年,是他让“极地漩涡”这个词流行起来。
Although “bomb cyclone” sounds bad, he notes, nothing will actually explode.Storm strength is measured by central pressure.The lower the pressure, the stronger it is.A storm is considered a “bomb” when the pressure drops quickly -- at least 24 mililbars in 24 hours.
马钨表示,虽然“炸弹旋风”听起来很糟糕,但实际上没有什么东西会发生爆炸。暴风雪的威力是通过中央气压测定。中央气压越低,暴风雪的威力就会越大。当暴风雪的气压下降的非常快时就会认为是一场“爆炸”,下降速度至少是24小时下降24毫巴。
This week’s storm in the United States is expected to strengthen at two times that rate, says Bob Oravec.He is the lead forecaster at the National Weather Service’s Weather Prediction Center.
据推测,这周美国的暴风雪至少是这个速度的两倍,鲍勃·奥拉维奇说道。他是美国国家气象局气象预测中心的首席天气预报员。
Around the world, about 40 to 50 bomb cyclones develop each year.However, most are over the open ocean and few people notice them.
每年全世界大概有40到50场炸弹旋风发生。然而,大多数都发生在开阔的海域,很少有人能看到。
“We use the term bomb,” Furtado said. “We know what it means, but I do think it gets a little hyped up.”
塔多表示“我们用爆炸这个术语是因为我们气象专家知道它的含义,但我认为它确实有些夸张。”
I’m Mario Ritter.
马里奥·利特为您播报。

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