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
外语
El Nino While some forecasting methods had limited success predicting the 1997 El Nino a few months in advance, the Columbia
El Nino While some forecasting methods had limited success predicting the 1997 El Nino a few months in advance, the Columbia
admin
2013-01-28
7
问题
El Nino
While some forecasting methods had limited success predicting the 1997 El Nino a few months in advance, the Columbia University researchers say their method can predict large El Nino events up to two years in advance. That would be good news for governments, farmers and others seeking to plan for the droughts and heavy rainfall that El Nino can produce in various parts of the world.
Using a computer the researchers matched sea-surface temperatures to later El Nino occurrences between 1980 and 2000 and were then able to anticipate El Nino events dating back to 1857, using prior sea-surface temperatures. The results were reported in the latest issue of the journal Nature.
The researchers say their method is not perfect, but Bryan C. Weare, a meteorologist at the University of California, Davis, who was not involved in the work, said it "suggests El Nino is indeed predictable."
"This will probably convince others to search around more for even better methods." said Weare. He added that the new method "makes it possible to predict El Nino at long lead times." Other models also use sea-surface temperatures, but they have not looked as far back because they need other data, which is only available for recent decades, Weare said.
The ability to predict the warming and cooling of the Pacific is of immense importance. The 1997 El Nino, for example, caused an estimated $20 billion in damage worldwide, offset by beneficial effects in other areas, said David Anderson, of the European Centre for Medium. Range Weather Forecasts in Reading England. The 1877 El Nino, meanwhile, coincided with a failure of the Indian monsoon and a famine that killed perhaps 40 million in India and China prompting the development of seasonal forecasting, Anderson said.
When El Nino hit in 1991 and 1997, 200 million people were affected by flooding in China alone, according to a 2002 United Nations report.
While predicting smaller El Nino events remains tricky, the ability to predict larger ones should be increased to at least a year if the new method is confirmed.
El Nino tends to develop between April and June and reaches its peak between December and February. The warming tends to last between 9 and 12 months and occurs every two to seven years.
The new forecasting method does not predict any major El Nino events in the next two years, although a weak warming toward the end of this year is possible.
The Columbia University researchers studied the relationship between the past El Nino occurrences and sea-surface temperatures.
选项
A、Right
B、Wrong
C、Not mentioned
答案
A
解析
根据第二段第一句“Using a computer the researchers matched sea—surface temperatures to laterE1 Nino occurrences between 1980 and 2000”可知。与问题内容一致,所以选A。
转载请注明原文地址:https://kaotiyun.com/show/oiLd777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
ScientistsDevelopWaysofDetectingHeartAttackGermanresearchershavecomeupwithanewgenerationofdefibrillators(除颤
HarryPotterismentionedinthepassage,becausescientistsHarryPotter’sinvisibilitycloakdoesn’thaveanyrealcompetitio
HowtheBodyKeepstheSameTemperatureThetemperatureofyourbodyshouldbealwaysjustthesame,nomatterwhethertheweath
AAttractionsofTravellingBLanguageProblemWhenEatingOutCRevolutionCausedbyJetsDHowTravellers’ConcernsAreMe
AAttractionsofTravellingBLanguageProblemWhenEatingOutCRevolutionCausedbyJetsDHowTravellers’ConcernsAreMe
AnimalsintheDesertSomedesertanimalscansurvivetheverystrongsummerheatanddrynessbecausetheyhaveveryunusualcha
CarThievesCouldBeStoppedRemotelySpeedingoffinastolencar,thethiefthinkshehasgotagreatcatch.Butheisinana
AFactorsLeadingtoEnergyWasteBHomeAppliancesCPropsalstoCutEnergyConsumptionDEnergyConsumptionTestETerawa
Europa’sWateryUnderworldEuropa,oneofJupiter’s63knownmoons,looksbrightandicyonthesurface.Butappearancescan
随机试题
背景某公司新建一办公大楼,框架结构,烧结普通砖填充墙。基础形式为大放脚基础,施工组织设计原定先采用机械开挖,然后人工清底至设计标高。实际土方开挖过程中,机械开挖由于在夜间施工,导致超挖0.2m深。主体结构施工过程中,由于钢筋放样员识图错误,钢筋下料尺寸
甲胎蛋白阳性对下列那种疾病最有诊断价值
下列情况中一般不会引发高镁血症的是
室内高压配电装置当采用35kV手车式开关柜时,柜后通道不宜小于多少?()
统计违法违纪行为的处分按照国家公务员的行政处分规定执行,具体处分种类包括()。
某公司流动资产由速动资产和存货构成,速动资产均为应收账款,年初存货为145万元,年初应收账款为125万元,年末流动比率为3,年末速动比率为1.5,存货周转率为4次,年末流动资产余额为270万元。一年按360天计算。要求:计算该公司流动负债年末
A公司有关资料如下:(1)今年年初股东权益总额为1200万元,年末股东权益总额为1680万元(其中,优先股股本为84万元)。今年年初、年末的权益乘数分别是2.5和2.2。(2)本年利润总额400万元,今年的所得税为100万元,优先股股利为60万元,
8.52-7.52+6.52-5.52+4.52-3.52+2.52-1.52的值为()。
一般说来,标志着教育学的发展进入独立形态阶段的是()
局域网指较小地域范围内的计算机网络,一般是一幢或几幢建筑物内的计算机互连成网。下面关于以太局域网的叙述中,错误的是______。
最新回复
(
0
)