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
Many of the most damaging and life threatening types of weather torrential rains, severe thunderstorms, and tornadoes begin quic
Many of the most damaging and life threatening types of weather torrential rains, severe thunderstorms, and tornadoes begin quic
admin
2010-01-26
36
问题
Many of the most damaging and life threatening types of weather torrential rains, severe thunderstorms, and tornadoes begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighbouring areas untouched. Such event as a tornado struck the northeastern section of Edmonton, Alberta, in July 1987. Total damages from the tornado exceeded $ 250 million, the highest ever for any Canadian storm.
Conventional computer models of the atmosphere have limited value in predicting short lived local storms like the Edmonton tornado, because the available weather data are generally not detailed enough to allow computers to study carefully the subtle atmospheric changes that come before these storms. In most nations, for example, weather- balloon observations are taken just once every twelve hours at locations typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events.
Until recently, the observation intensive approach needed for accurate, very short -range forecasts, or "Nowcasts," was not feasible. The cost of equipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were hard to overcome. Fortunately, scientific and technological advances have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observation over large regions at a relatively low cost. Communications satellites can transmit data around the world cheaply and instantaneously, and modem computers can quickly compile and analyze this large volume of weather information. Meteorologists and computer scientists now work together to design computer programs and video equipment capable of transforming raw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, Nowcasting is becoming a reality.
According to the passage, the word "Nowcast" (paragraph 3 ) means______.
选项
A、a way of collecting raw weather data
B、a forecast which can predict the weather conditions in the small area in an accurate way
C、a network to collect instant weather data
D、a more advanced system of weather observation
答案
B
解析
根据该词前面的解释accurate,short—range forecasts可以推断出Nowcast的意思为“准确,及时的天气预报”。另外,通过前缀也可推测出来:fore—表示“提前”, now—表示“立即”。
转载请注明原文地址:https://kaotiyun.com/show/IRdK777K
0
大学英语六级
相关试题推荐
Youtypicallyneed1or2yearsofworkexperienceinaserviceoccupationbeforegettingyourfirstjobasaflightattendant.
InShakeShackCompany,astherestaurantmanager,youwillberesponsibleforhelpingtoleadanddrivethedailyoperationsof
A、Someonewhoalwaystalksabouthimself.B、Themostviolenttypeofco-workers.C、Someonewhostabsyourback.D、Themostcommo
Bythemiddleofthe18thcentury,manydifferentkindsofProtestantslivedinAmerica.AlthoughtheChurchofEnglandwasane
Whywerethehumanitiessubjectsrequiredtobestudiedintheoriginalclassicaltext?Beingtownspeople,humanists______.
Whatisthemainsubjectofthispassage?Accordingtothepassage,individualswithastrongdrivetosucceedwill
Forthispart,youareallowed30minutestowriteashortessayentitled"TheFirstImpressionofMyRoommate"Youshouldwrite
A、Itisclosetotheschool.B、Itischeap.C、Ithasconvenientfacilities.D、Thetenantagreementisgood.AWhatistheadvanta
Floodingisthemostdestructiveweatherdisasterinthelasthundredyears.Windcurrentsturnouttobemoreactiveincolder
A、Six.B、Seven.C、Five.D、Sixorseven.DHowmanyitemsshouldthemanpickup?信息明示题。男士说自己记得妈妈让他买的六七件物品中的大多数,即他本应该买六七件物品,故选D。
随机试题
某病人新发现肺结核,胸片示左上肺云雾状淡薄阴影,有空洞形成,痰涂片查到结核菌,拟采用短程化疗,下列哪种方案最为理想
下列属于图像前处理的是
急性胰腺炎的CT常见表现不包括
A、p溶血性链球菌B、梭状芽胞杆菌C、铜绿假单胞菌D、大肠杆菌E、金黄色葡萄球菌痈的致病菌是
对该病人最可能的诊断是食管吞钡X线片描述下列哪项是错误的
下述有关水利工程建设项目的质量监督期说法正确的为()。
根据我国海关的规定,过境货物的过境期限为()。
批处理是包含一个或者多个Transact-SQL语句的组,它将一次性地发送到SQLServer中执行,用(2)来通知SQLServer一批-Transact-SQL语句的结束。
若用户需求不清晰且经常发生变化,但系统规模不太大且不太复杂,则最适宜采用__________(15)开发方法。对于数据处理领域的问题,若系统规模不太大且不太复杂,需求变化也不大,则最适宜采用_________(16)开发方法。(15)
Pentium4HT微处理器可以模拟两个逻辑CPU并发执行两个线程,Intel公司将这种技术称为______技术。
最新回复
(
0
)