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
9
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
Whatisthemaintopicoftheinterview?[originaltext]Interviewer(M)JeanChat
下列各项中,不符合DIC的是:()A.血小板减少 B.PT延长 C.
生产经营单位委托具有相关资质的机构提供安全生产技术、管理服务的,保证安全生产的责
道路运输安全体系中支撑保障体系不包括()A.行业组织的作用 B.安全生产诚信管
10岁女孩,高热10小时伴头痛、呕吐。体检:T39.2℃,BP60/30mm
以下关于相关人员买卖股票的说法正确的有( )。 Ⅰ.证券公司从业人员,在股票
现在公共生活的复杂性要求我们培育各类职业伦理,而从上说,它只能是底线要求。面向
在利益多元、信息网络高度发达的今天,政府的施政离不开公众参与。闭门造车、我行我素
符合小微企业授信业务工作人员免除全部或部分责任的情形是()。A.信贷资产本
医疗机构未设立临床用血管理委员会或者工作组的法律责任说法错误的是A.由县级以上人
最新回复
(
0
)