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[机构公布] 大西洋上活跃的2012年飓风季节,高活动时代持续长达数十年。

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匿名  发表于 2012-12-1 22:13 |阅读模式
Busy 2012 hurricane season continues decades-long high activity era in the Atlantic
大西洋上活跃的2012年飓风季节,高活动时代持续长达数十年。

Four U.S. land-falling storms include devastating Sandy and Isaac
四个在美国登陆的风暴包括灾难性的桑迪和艾萨克
November 29, 2012
2012年11月29日



2012 hurricane season animation.
Download here. (Credit: NOAA.)
2012年飓风季节动画
这里下载(图片提供:NOAA)
November 30 marks the end of the 2012 Atlantic Hurricane season, one that produced 19 named storms, of which 10 became hurricanes and one became a major hurricane.  The number of named storms is well above the average of 12. The number of hurricanes is also above the average of six, but the number of major hurricanes is below the average of three.
11月30日标志着2012年大西洋飓风季节的结束,共有19个命名风暴,其中10个成为飓风,1个成为主要飓风。命名风暴的数量远高于平均的12个。飓风的数量也高于平均的6个,但主要飓风的数量低于平均的3个。

Based on the combined number, intensity, and duration of all tropical storms and hurricanes, NOAA classifies the season as above-normal.  2012 was an active year, but not exceptionally so as there were 10 busier years in the last three decades.
根据结合所有热带风暴和飓风的数量、强度和持续时间,NOAA将本风季列入高于正常的飓风季。 2012年是一个活跃年,但并不特别,所以列入到过去三十年里的10个活跃年份。

This season marks the second consecutive year that the mid-Atlantic and Northeast suffered devastating impacts from a named storm. Sandy, and Irene last year, caused fatalities, injuries, and tremendous destruction from coastal storm surge, heavy rainfall, inland flooding, and wind. Storms struck many parts of the country this year, including tropical storms Beryl and Debby in Florida, Hurricane Isaac in Louisiana, and Post-tropical Cyclone Sandy in New Jersey.
这一风季标志着大西洋沿岸中部和东北部连续第二年遭受命名风暴灾难性的影响。桑迪与去年艾琳所造成的死亡事故、受伤和巨大的破坏,来自于沿海的风暴潮、强降雨、内陆洪水与风。风暴今年袭击国家的许多地方,包括在佛罗里达州的热带风暴Beryl和Debby,路易斯安那州的飓风艾萨克,以及在新泽西州的后热带气旋桑迪。

“This year proved that it’s wrong to think that only major hurricanes can ruin lives and impact local economies,” said Laura Furgione, acting director of NOAA’s National Weather Service. “We are hopeful that after the 2012 hurricane season, more families and businesses all along the Atlantic and Gulf Coasts become more “weather ready” by understanding the risks associated with living near the coastline.  Each storm carries a unique set of threats that can be deadly and destructive. Mother Nature reminded us again this year of how important it is to be prepared and vigilant.”

“今年认为只有主要飓风毁灭生命和影响当地经济的想法,事实证明是错误的。” NOAA国家气象局代理主任Laura Furgione说。 “我们希望2012年的飓风季节之后,所有沿大西洋和墨西哥湾沿岸的更多家庭和商家,通过了解住在海岸线附近所具有的风险性而变得更有’天气准备 ‘。每场风暴携带一套独特的威胁,可以是致命的、毁灭性的。大自然再次提醒我们这一年的准备和警惕是多么的重要。”

An interesting aspect of the season was its early start, with two tropical storms, Alberto and Beryl, developing in May before the season officially began. Also, this is the seventh consecutive year that no major hurricanes (Category 3, 4 or 5) have hit the United States. The only major hurricane this season was Hurricane Michael, a Category 3 storm that stayed over the open Atlantic.
本季一个有意思的方面是两个热带风暴,Alberto和Beryl,早在本风季正式开始前的5月份就发展。此外,这是连续第七年没有主要飓风(CAT3,4或5)袭击美国。 这风季仅有的一个主要飓风是Michael ,它是一个CAT3风暴,在开阔的大西洋上游弋。

Several storms this year were short in duration, weak in intensity, and went largely unnoticed by the general public because they stayed out over the Atlantic. A persistent jet stream pattern over the eastern portion of the nation helped steer many of this season’s storms away from the United States. The number of named storms and hurricanes was higher than predicted in NOAA’s pre-season outlook, in large part because El Niño – which likely would have suppressed overall storm activity – never materialized as predicted by many climate models.
今年的数场风暴持续时间短、强度弱,由于他们呆在在大西洋上空,在很大程度上被公众忽视了。该国东部部分持久性的急流模式,有助于引导本季的风暴远离美国。命名风暴和飓风的数量高于NOAA季前展望中的预测,在很大程度上是由于厄尔尼诺 - 这可能会抑制风暴总体的活动 - 从未出现许多气候模型所预测的那样。

Hurricane forecasters remind us that a well-established climate pattern puts us in an ongoing era of high activity for Atlantic hurricanes that began in 1995. Since that time, more than 70 percent of seasons have been above normal, including 2012. Historically, Atlantic high-activity eras have lasted 25-40 years, with the previous one occurring from the mid-1930s until 1970. Several inter-related atmospheric and oceanic factors contribute to these high activity years, including warmer Atlantic Ocean temperatures, an enhanced West African monsoon, and reduced vertical wind shear.
飓风预测者提醒我们,1995年开始的良好气候模式让我们大西洋飓风高活动的时代持续。自那时起, 70%多的飓风季已经高于正常,包括2012年。从历史上看,从20世纪30年代中期直到1970年,以前发生的大西洋高活动时代,已经持续了25-40年。几个相关联的大气和海洋因素促成了这些高活动的年代,温暖的大西洋温度,西非季风的增强,垂直风切变的减弱。
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超强台风

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发表于 2012-12-2 09:00 | 显示全部楼层
AMO暖位相,大西洋飓风这么十多年来一直高产。
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发表于 2012-12-2 10:43 | 显示全部楼层

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tropicalos:AMO暖位相,大西洋飓风这么十多年来一直高产。 (2012-12-02 09:00)
顺便问一下,AMO指的是什么?
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发表于 2012-12-2 10:45 | 显示全部楼层
北大西洋的飓风季趋于活跃,这是有目共睹的。但并不是每一年的主要飓风都是多于正常值的,但强度弱的风暴也不能忽视。
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