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
On the heels of E1 , its opposite, La may soon arrive. In a Weekly Update, scientists at the NOAA Climate Prediction Center rep
On the heels of E1 , its opposite, La may soon arrive. In a Weekly Update, scientists at the NOAA Climate Prediction Center rep
admin
2010-12-04
62
问题
On the heels of E1 , its opposite, La may soon arrive. In a Weekly Update, scientists at the NOAA Climate Prediction Center reported that as the 2006-2007 E1 faded, surface and subsurface ocean temperatures have rapidly decreased. Recently, cooler-than-normal water temperatures have developed at the surface in the east-central equatorial Pacific, indicating a possible transition to La conditions.
Typically, during the U.S. spring and summer months, La conditions do not significantly impact overall inland temperature and precipitation (雨水的降落) patterns, however, La episodes often do have an effect on Atlantic and Pacific hurricane activity.
"Although other scientific factors affect the hurricanes, there tends to be a greater-than-nor-mal number of Atlantic hurricanes and fewer-than-normal number of eastern Pacific hurricanes during La events," said retired Navy Vice Adm. Conrad C. Lautenbacher, Ph.D., under secretary of commerce for oceans and atmosphere and NOAA administrator. "During the winter, usual La impacts include drier and warmer-than-average conditions over the southern United States."
"NOAA’s ability to detect and monitor the formation, duration and strength of E1 and La events is enhanced by continuous improvements in satellite and buoy observations in the equatorial Pacific," Lautenbacher added. "These observing systems include the TAO/TRITON moored and Argo drift buoys, as well as NOAA’s polar orbiting satellites."
La conditions occur when ocean surface temperatures in the central and east-central equatorial Pacific become cooler than normal. These changes affect tropical rainfall patterns and atmospheric winds over the Pacific Ocean, which influence the patterns of rainfall and temperatures in many areas worldwide.
"La events sometimes follow on the heels of E1 conditions," said Vernon Kousky, research meteorologist at the NOAA Climate Prediction Center. "It is a naturally occurring phenomenon that can last up to three years. La episodes tend to develop during March-June, reach peak intensity during December-February, and then weaken during the following March-May."
"The last lengthy La event was 1998-2001, which contributed to serious drought conditions in many sections of the western United States," said Douglas Lecomte, drought specialist at the NOAA Climate Prediction Center.
NOAA will issue the U.S. Spring Outlook on March 15, and its Atlantic Hurricane Season Outlook in May. Both outlooks will reflect the most current La forecast.
"While the status of E1 /La is of vital importance to our seasonal forecasts, it is but one measure we use when making actual temperature and precipitation forecasts," said Kousky.
Which of the following statements about La is TRUE?
选项
A、It brings an end to E1 .
B、It balances the effects of E1 .
C、It follows a decrease of ocean temperature.
D、It causes the ocean temperature to drop rapidly.
答案
C
解析
首段最后两句都表明拉尼娜现象的预兆是海水温度下降,因此选C。
转载请注明原文地址:https://kaotiyun.com/show/Yds7777K
0
大学英语六级
相关试题推荐
Acollegedegreeisnotasignthatoneisafinishedproduct__________(而是个人已作好生活准备的一个标记).
TreesTomany,thewordtreesevokesimagesofsuchancient,powerful,andmajesticstructuresastheredwoodandthegiant
Theageofgildedyouthisover.Today’sunder-thirtiesarethefirstgenerationforacenturywhocanexpectalowerlivingsta
Accordingtorecentresearch,___________________(退休的人如果找不到什么事情可做,常会意志消沉).
A、Shethinksbigpartiesaretooimpersonal.B、Shewouldliketoinvitefriendstoabigparty.C、Shefeelsshehastospendal
A、Adormitoryatschool.B、LivingwithaBritishfamily.C、Sharingahousewithotherstudents.D、Stayingmasmallinnwithbed
A、Learningknowledgeofthelanguage.B、Readingnewspapersandmagazinesofforeignlanguage.C、Communicatingwiththenativepe
A、Studentsmightnotconsiderthemtobeanimportantpartofculture.B、Theysymbolizetherebellionofyouthinthe1950’s.C、
A、Collectingearlystamps.B、Sellingfalsesignature.C、Makingfastfood.D、Writingdetectivestories.B该题问“在费城Robert靠什么谋生”。文中谈到
随机试题
【背景资料】某市拟兴建一座金融大厦,建筑面积26682m2,建筑总高度63.8m,内1筒外框结构,桩箱复合基础。通过公开招标,由省建一公司施工总承包。该工程设计有5部电梯,其中包括两个单体电梯井和一个三联体电梯井,2010年2月15日,架子工开始
票据业务包括以商业汇票为媒介进行的()业务。
某派出所近期经常接到游客报警,称辖区内的一条商业街多次发生扒窃案件,有小偷趁游客购物时偷窃其随身携带的贵重物品。派出所要加强商业街的治安防范,不恰当的做法是:
共射极输出放大电路就是一个电压串联负反馈放大电路。()
下列有关存储器读写速度的排列,正确的是_________。
关于牙源性感染,下列错误的是
A.抑制血小板聚集B.促进四氢叶酸类辅酶的循环利用C.促进凝血因子合成D.促进纤溶E.阻止凝血因子合成维生素K1的作用机制是
经腹输卵管结扎术应取的卧位是()。
恒发公司设有机修和供汽两个辅助生产车间,2019年5月在分配辅助生产费用前,机修车间发生的直接材料成本95万元,直接人工成本45万元,机器设备的折旧费用15万元。机修车间按修理工时分配费用,当月提供修理工时为620小时(其中为供汽车间提供20小时,基本生产
近日,在湖北省恩施市来凤县,杨元以668分的高考成绩,成为全县以及恩施州的理科状元。4名身穿校服的小伙子合力扛起一块大幅“喜报”,一名胸戴大红花的男生穿过天窗站立在一辆黑色轿车中,紧随其后的是数十人组成的腰鼓队,闹市区行人纷纷驻足围观。对此现象你怎么看?
最新回复
(
0
)