首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
It seems to happen with depressing frequency—sunny skies turn to rain just as the weekend arrives. Now Spanish researchers say t
It seems to happen with depressing frequency—sunny skies turn to rain just as the weekend arrives. Now Spanish researchers say t
admin
2015-12-28
128
问题
It seems to happen with depressing frequency—sunny skies turn to rain just as the weekend arrives. Now Spanish researchers say they have evidence that in some parts of Europe the weather really does follow a weekly cycle, although not in the straightforward way that the anecdote might suggest.
Evidence has been mounting over the years that the weather in certain parts of the world, including the US, Japan and China, can be driven by the weekly cycle of human activity. This is because we tend to produce more air pollution during the week and less at the weekend. Evidence that such an effect occurs in Europe is controversial and has been harder to come by. Arturo Sanchez-Lorenzo of the University of Barcelona, Spain, and his colleagues examined data gathered between 1961 and 2004 from weather stations across Spain to see whether such a pattern existed. They claim to have found it in Spain, as well as hints of weekly changes in air circulation more broadly over Western Europe.
The result is puzzling, but it is known that airborne pollutants produced by human activity can affect the weather in a variety of ways. For example, particles can be heated by absorbing sunlight, which in turn heats the air and changes air circulation patterns. Pollutant particles can also provide seeds for cloud formation. Exactly which effect has the greatest influence seems to depend on conditions that vary season by season. They also found signs that air pressure in Western Europe tends to be lower midweek than at the weekend in data from a global database. This suggests that the human influence on weather goes beyond known local effects, says team member Josep Calbo of the University of Girona in Spain.
However, it is not clear whether the team’s findings are statistically significant, says Thomas Bell of NASA’s Goddard Space Flight Center in Greenbelt, Maryland, who was part of a team that found a stronger weekly cycle in the US. "This whole enterprise of looking for weekly cycles is rife with possibilities for misleading oneself."
Why a weekly cycle would be less noticeable in Europe than in the US and Asia is still unknown. No weekly cycle has ever been found in the UK, probably because the weather is dominated by large systems blowing in from the Atlantic Ocean. These larger systems may be harder for weekly pollution cycles to influence, points out Douglas Maraun of the University of East Anglia in Norwich, who studies UK precipitation. "I doubt that there is a weekly influence of human activity on such a large weather system," he says.
In the opening paragraph, Spanish researchers suggest that
选项
A、the weather system of Europe follows a strict weekly cycle.
B、there is a great possibility of rain in Spain on weekends.
C、rain cycles have resulted from the excessive human activities.
D、weather interacts with human activities in a straightforward way.
答案
B
解析
推理判断题。举出西班牙研究者的研究情况是为了说明①句,即“就在周末到来之际,晴朗的天空开始下雨,且频率很高”,B项的表述与文章大意一致。
转载请注明原文地址:https://kaotiyun.com/show/c1sZ777K
0
考研英语一
相关试题推荐
【F1】Duringthepastgeneration,theAmericanmiddle-classfamilythatoncecouldcountonhardworkandfairplaytokeepitself
【F1】Duringthepastgeneration,theAmericanmiddle-classfamilythatoncecouldcountonhardworkandfairplaytokeepitself
Relativitytheoryhashadaprofoundinfluenceonourpictureofmatterbyforcingustomodifyourconceptofaparticleinan
[A]Whattodoasastudent[B]Variousdefinitionsofplagiarism[C]Ideasshouldalwaysbesourced[D]Ignorancecanbeforgiven[
You’venowhearditsomanytimes,youcanprobablyrepeatitinyoursleep.PresidentObamawillnodoubtmakethepointpublic
Overthepastdecade,thousandsofpatentshavebeengrantedforwhatarecalledbusinessmethods.Amazon,comreceivedonefor
Ifyouknowexactlywhatyouwant,thebestroutetoajobistogetspecializedtraining.Arecentsurveyshowsthatcompaniesl
TheinternshipisnowubiquitousacrossAmericaandbeyond.ThisyearyoungAmericanswillcompleteperhaps1msuchplacements;
Inafamilywheretherolesofmenandwomenarenotsharplyseparatedandwheremanyhouseholdtasksaresharedtoagreateror
InAugust,environmentalistsinthePhilippinesvandalizedafieldofGoldenRice,anexperimentalgrainwhosegeneshadbeenmo
随机试题
2000年、2005年、2006年发达国家、发展中国家和世界总体的国际储备(不包括黄金)和黄金储备变化情况,如图所示:部分国家国际储备和黄金储备的变化情况如下表所示:2000年到2006年黄金储备量下降幅度超过11%的国家有多少个?()
对于两个并发进程,设互斥信号量为S,当S=0时,则表示
在再障的发病机制中,最重要的环节为()
患者,女性,67岁。晨练时跌倒后左手掌着地,遂感腕部疼痛、肿胀、畸形、活动受限。问题1:最可能的诊断是
任何单位和个人,未经税务机关批准,不得拆本使用发票。()
在资本资产定价模型中,对于同一条有效边界,投资者甲的偏好无差异曲线比投资者乙的偏好无差异曲线斜率要陡,那么投资者甲的最优组合一定()。
银行最常见的个人贷款营销渠道不包括()。
在网络操作系统的发展过程中,最早出现的是()。
若服务器系统年停机时间为55分钟,那么系统可用性至少达到()。
EFirstofall,we’dliketoknowsomethingaboutyou,soI’mgoingtoasksomequestionsaboutyourselves.EAreyousatisfied
最新回复
(
0
)