首页
登录
职称英语
On the heels of E1 , its opposite, La may soon arrive. In a Weekly Update, scie
On the heels of E1 , its opposite, La may soon arrive. In a Weekly Update, scie
游客
2023-09-07
19
管理
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. [br] 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://tihaiku.com/zcyy/2993216.html
相关试题推荐
[originaltext]W:Today’sgueston"ScienceUpdate"isDavidBrown.Dr.Brown,y
[originaltext]W:Today’sgueston"ScienceUpdate"isDavidBrown.Dr.Brown,y
[originaltext]W:Today’sgueston"ScienceUpdate"isDavidBrown.Dr.Brown,y
OntheheelsofE1,itsopposite,Lamaysoonarrive.InaWeeklyUpdate,scie
OntheheelsofE1,itsopposite,Lamaysoonarrive.InaWeeklyUpdate,scie
OntheheelsofE1,itsopposite,Lamaysoonarrive.InaWeeklyUpdate,scie
OntheheelsofE1,itsopposite,Lamaysoonarrive.InaWeeklyUpdate,scie
Everybodyshould__________toupdatehimselfinordertomeettherequirements
Youshould_______tooneormoreweeklymagazinessuchasTime,orNewsweek.A、r
AfterlunchIfelt______enoughtoaskmybossforariseinmyweeklywages.A、
随机试题
A.equipmentB.maintainC.forexampleD.contactE.contrastF.gained
Whogoesfirstandwhofollows,andthe【C1】______towhichwomenare"emancip
InAmericaalone,tippingisnowa$16billion-a-yearindustry.Consumersac
党的十九大报告指出,我国发展新的历史方位是()。A.中国特色社会主义进入了新时
A.总补体活性检测及各补体成分检测 B.EB病毒基因PCR检测对以下原发性免疫
金融市场的参与者通过买卖金融资产转移或接受风险,利用组合投资可分散那些投资于单一
以募满发行额为止中标商各自价格上的中标价格作为各中标商的最终中标价,各种标价的认
查询余额表。查询“负债类”总账科目余额表,要求显示累计发生额的信息,查询完毕后退
围绕施工部署原则编制的施工组织设计组成内容是( )。A.施工现场平面布置 B
女,46岁,公司经理。自述昨晚1点突然感到紧张、胸闷、心悸、头晕、气短、出汗,出
最新回复
(
0
)