欧洲飘起“橙色的雪” 原因竟然是……
<p>雪在我们印象中一直是洁白无瑕的，但是近日东欧多个地区却惊现“橙色雪”，这场可怕的橙色暴风雪将大片雪白的山脉变成了赤褐色，火星般的场景让人怀疑是末日降临。那么这种诡异的颜色是如何形成的？来看看气象学家怎么说。</p><p><span word="A">A</span> <span word="recent">recent</span> <span word="fall">fall</span> <span word="of">of</span> <span word="really">really</span> <span word="strange">strange</span> <span word="orange">orange</span>-<span word="tinted">tinted</span> <span word="snow">snow</span> <span word="is">is</span> <span word="making">making</span> <span word="headlines">headlines</span> <span word="after">after</span> <span word="it">it</span> <span word="swept">swept</span> <span word="across">across</span> <span word="a">a</span> <span word="swathe">swathe</span> <span word="of">of</span> <span word="Eastern">Eastern</span> <span word="Europe">Europe</span>. <span word="Images">Images</span> <span word="on">on</span> <span word="social">social</span> <span word="media">media</span> <span word="from">from</span> <span word="Russia">Russia</span> <span word="show">show</span> <span word="mountainous">mountainous</span> <span word="landscapes">landscapes</span> <span word="tinged">tinged</span> <span word="auburn">auburn</span>, <span word="where">where</span> <span word="usually">usually</span> <span word="they">they</span> <span word="are">are</span> <span word="pristine">pristine</span> <span word="white">white</span>.</p><p>最近东欧多地上空飘起橙色雪，这一奇特景象抢占了资讯头条。俄罗斯社交媒体的图片显示，往常雪白的大片山脉被染成了赤褐色。</p><p><span word="Although">Although</span> <span word="it">it</span> <span word="resembles">resembles</span> <span word="what">what</span> <span word="we">we</span> <span word="might">might</span> <span word="imagine">imagine</span> <span word="snow">snow</span> <span word="on">on</span> <span word="Mars">Mars</span> <span word="to">to</span> <span word="look">look</span> <span word="like">like</span>, <span word="the">the</span> <span word="explanation">explanation</span> <span word="is">is</span> <span word="actually">actually</span> <span word="pretty">pretty</span> <span word="simple">simple</span>.</p><p>尽管它看上去像极了我们想象中的“火星雪”，但是这个现象背后的原因其实很简单。</p><p><span word="According">According</span> <span word="to">to</span> <span word="the">the</span> <span word="BBC">BBC</span>, <span word="the">the</span> <span word="orange">orange</span> <span word="colouration">colouration</span> <span word="is">is</span> <span word="caused">caused</span> <span word="by">by</span> <span word="fine">fine</span> <span word="particles">particles</span> <span word="of">of</span> <span word="sand">sand</span> <span word="being">being</span> <span word="lifted">lifted</span> <span word="from">from</span> <span word="the">the</span> <span word="Sahara">Sahara</span> <span word="into">into</span> <span word="the">the</span> <span word="atmosphere">atmosphere</span>, <span word="travelling">travelling</span> <span word="across">across</span> <span word="the">the</span> <span word="world">world</span> <span word="and">and</span> <span word="falling">falling</span> <span word="back">back</span> <span word="to">to</span> <span word="the">the</span> <span word="ground">ground</span> <span word="mixed">mixed</span> <span word="in">in</span> <span word="with">with</span> <span word="rain">rain</span> <span word="and">and</span> <span word="snow">snow</span>.</p><p>据<span word="BBC">BBC</span>报道，雪的橙色调源于撒哈拉沙漠飘来的细沙，这些细沙经历了“环球旅行”，最后混在雨雪中降落到地面。</p><p><span word="It">It</span> <span word="occurs">occurs</span> <span word="once">once</span> <span word="every">every</span> <span word="five">five</span> <span word="years">years</span> <span word="or">or</span> <span word="so">so</span> - <span word="although">although</span> <span word="this">this</span> <span word="year">year</span>'<span word="s">s</span> <span word="orange">orange</span> <span word="snow">snow</span> <span word="is">is</span> <span word="particularly">particularly</span> <span word="vibrant">vibrant</span>, <span word="due">due</span> <span word="to">to</span> <span word="a">a</span> <span word="desert">desert</span> <span word="sandstorm">sandstorm</span> <span word="that">that</span> <span word="was">was</span> <span word="so">so</span> <span word="big">big</span> <span word="it">it</span> <span word="was">was</span> <span word="seen">seen</span> <span word="in">in</span> <span word="NASA">NASA</span> <span word="satellite">satellite</span> <span word="imagery">imagery</span> <span word="travelling">travelling</span> <span word="across">across</span> <span word="the">the</span> <span word="globe">globe</span>, <span word="CNN">CNN</span> <span word="reports">reports</span>.</p>
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