首页
登录
职称英语
Many of the most damaging and life threatening types of weather torrential ra
Many of the most damaging and life threatening types of weather torrential ra
游客
2024-12-04
1
管理
问题
Many of the most damaging and life threatening types of weather torrential rains, severe thunderstorms, and tornadoes (龙卷风)—begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighbouring reas 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 (微妙的) 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 modern computers can quickly compile and analyze this large volume of weather information. Meteorologists(气象学者)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. [br] According to the author, the passage mainly deals with_____.
选项
A、a tornado in Edmonton, Alberta
B、what’s a"Nowcast"
C、the disadvantage of conventional computer models of the weather forecast
D、a breakthrough in weather forecast
答案
D
解析
文章主要讲了天气预报的突破。故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3872765.html
相关试题推荐
Greetings,farewellsandcommentsontheweatherinEnglishare______function.A、
Manyofthemostdamagingandlifethreateningtypesofweathertorrentialra
Manyofthemostdamagingandlifethreateningtypesofweathertorrentialra
Manyofthemostdamagingandlifethreateningtypesofweathertorrentialra
Manyofthemostdamagingandlifethreateningtypesofweathertorrentialra
Accordingtothenewsitem,thethreateningpackagesweresentfrom[originaltex
Whatisthemainideaofthenewsitem?[originaltext]Severeweatherinthe
TheU.S.isknownasagreat"meltingpot"because______.A、theweatherinmost
A:Mr.Greenisirritating.B:Theweatherhasbeenquitedelightfulthissummer
WhichofthefollowingisNOTthedescriptionoftheweatherofIreland?A、Dry.B
随机试题
A--socialisteconomyB--capitalisteconomyC--collectiveeconomyD--
Rabiesisanordinarilyinfectiousdiseaseofthecentralnervoussystem,caus
路面检测包括路面损坏、平整度、车辙、跳车、磨耗、抗滑性能和结构强度7项指标。其中
患者,男,11岁,下颌面部呈相对后退位,口唇闭合呈现口唇肌肉紧张,覆5mm,覆盖
男性,62岁,患高血压6年余,近1个月来血压经常持续在22.1/13kPa(17
A.柿蒂B.薤白C.陈皮D.大腹皮E.香附善疏肝胆气滞的药物是
小张是一家企业的人事经理,准备采用行为锚定等级评价法进行员工考核。请帮助其设计具
A.69.3Pa B. C. D.69.3kPa
企业委托加工一批非金银首饰的应税消费品,收回后直接用于销售。不考虑其他因素。下列
根据规范要求,建筑高度不超过24m的建筑或建筑高度大于24m的单层公共建筑,下列
最新回复
(
0
)