太阳打蔫儿 北半球今年或再现冷冬
<p><span word="A">A</span> <span word="cyclical">cyclical</span> <span word="drop">drop</span> <span word="in">in</span> <span word="the">the</span> <span word="sun">sun</span>'<span word="s">s</span> <span word="radiation">radiation</span> <span word="can">can</span> <span word="trigger">trigger</span> <span word="unusually">unusually</span> <span word="cold">cold</span> <span word="winters">winters</span> <span word="in">in</span> <span word="parts">parts</span> <span word="of">of</span> <span word="North">North</span> <span word="America">America</span> <span word="and">and</span> <span word="Europe">Europe</span>, <span word="scientists">scientists</span> <span word="say">say</span>, <span word="a">a</span> <span word="finding">finding</span> <span word="that">that</span> <span word="could">could</span> <span word="improve">improve</span> <span word="long">long</span>-<span word="range">range</span> <span word="forecasts">forecasts</span> <span word="and">and</span> <span word="help">help</span> <span word="countries">countries</span> <span word="prepare">prepare</span> <span word="for">for</span> <span word="blizzards">blizzards</span>.</p><p>科学家表示，太阳辐射的周期性减弱可能导致北美洲和欧洲部分地区出现异常“冷冬”。这项科学发现可以改进长期天气预报，帮助各国准备好应对风雪。</p><p><span word="Scientists">Scientists</span> <span word="have">have</span> <span word="known">known</span> <span word="for">for</span> <span word="a">a</span> <span word="long">long</span> <span word="time">time</span> <span word="that">that</span> <span word="the">the</span> <span word="sun">sun</span> <span word="has">has</span> <span word="an">an</span> 11-<span word="year">year</span> <span word="cycle">cycle</span> <span word="during">during</span> <span word="which">which</span> <span word="radiation">radiation</span> <span word="measured">measured</span> <span word="by">by</span> <span word="sunspots">sunspots</span> <span word="on">on</span> <span word="the">the</span> <span word="surface">surface</span> <span word="reaches">reaches</span> <span word="a">a</span> <span word="peak">peak</span> <span word="then">then</span> <span word="falls">falls</span>. <span word="But">But</span> <span word="pinning">pinning</span> <span word="down">down</span> <span word="a">a</span> <span word="clear">clear</span> <span word="link">link</span> <span word="to">to</span> <span word="weather">weather</span> <span word="has">has</span> <span word="proved">proved</span> <span word="harder">harder</span>.</p><p>早前研究发现，太阳的活动周期为11年，在此期间，以太阳表面黑子为衡量标准的太阳辐射达到峰年和谷年。但证实太阳活动周期与天气之间的明确联系一直存在困难。</p><p>"<span word="Our">Our</span> <span word="research">research</span> <span word="confirms">confirms</span> <span word="the">the</span> <span word="observed">observed</span> <span word="link">link</span> <span word="between">between</span> <span word="solar">solar</span> <span word="variability">variability</span> <span word="and">and</span> <span word="regional">regional</span> <span word="winter">winter</span> <span word="climate">climate</span>," <span word="lead">lead</span> <span word="author">author</span> <span word="Sarah">Sarah</span> <span word="Ineson">Ineson</span> <span word="of">of</span> <span word="the">the</span> <span word="UK">UK</span> <span word="Met">Met</span> <span word="Office">Office</span> <span word="told">told</span> <span word="the">the</span> <span word="reporters">reporters</span> <span word="in">in</span> <span word="an">an</span> <span word="email">email</span>. <span word="The">The</span> <span word="study">study</span> <span word="was">was</span> <span word="published">published</span> <span word="in">in</span> <span word="the">the</span> <span word="journal">journal</span> <span word="Nature">Nature</span> <span word="Geoscience">Geoscience</span> <span word="on">on</span> <span word="Monday">Monday</span>.</p><p>研究负责人、英国气象局的莎拉 伊尼森在电邮中告诉记者：“对已观测到的太阳活动变化与地区冬季气候之间的联系，研究予以了证实。” 研究结果本周一发表在英国《自然—地球科学》杂志上。</p><p><span word="Her">Her</span> <span word="team">team</span> <span word="focused">focused</span> <span word="on">on</span> <span word="data">data</span> <span word="from">from</span> <span word="the">the</span> <span word="recent">recent</span> <span word="solar">solar</span> <span word="minimum">minimum</span> <span word="during">during</span> 2008-10, <span word="a">a</span> <span word="period">period</span> <span word="of">of</span> <span word="unusual">unusual</span> <span word="calm">calm</span> <span word="for">for</span> <span word="the">the</span> <span word="sun">sun</span> <span word="and">and</span> <span word="intense">intense</span> <span word="winters">winters</span> <span word="in">in</span> <span word="the">the</span> <span word="United">United</span> <span word="States">States</span> <span word="and">and</span> <span word="parts">parts</span> <span word="of">of</span> <span word="Europe">Europe</span> <span word="that">that</span> <span word="shut">shut</span> <span word="down">down</span> <span word="air">air</span> <span word="travel">travel</span> <span word="and">and</span> <span word="disrupted">disrupted</span> <span word="businesses">businesses</span>.</p>
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