首页
登录
职称英语
Many of the most damaging and life threatening types of weather torrential r
Many of the most damaging and life threatening types of weather torrential r
游客
2023-09-02
75
管理
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 neighboring 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 net 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 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.
选项
A、added up to
B、were more than
C、were about
D、were less than
答案
B
解析
词汇题。exceed的意思是“超过”。
转载请注明原文地址:http://tihaiku.com/zcyy/2978197.html
相关试题推荐
[originaltext]AndnowfortheMondayMorningweatherreport.Rightnowthe
[originaltext]AndnowfortheMondayMorningweatherreport.Rightnowthe
[originaltext]M:Paula,willyoubereadytoleaveateight?Theweatherisnot
[originaltext]M:Paula,willyoubereadytoleaveateight?Theweatherisnot
[originaltext]M:Paula,willyoubereadytoleaveateight?Theweatherisnot
[originaltext]ExpertssaysomefarmingactivitiesareseriouslydamagingEa
[originaltext]ExpertssaysomefarmingactivitiesareseriouslydamagingEa
[originaltext]AnewenemyisthreateningJapanesetraditions:leisure.[29]
[originaltext]AnewenemyisthreateningJapanesetraditions:leisure.[29]
Aweathermapisanimportanttoolforgeographers.Asuccessionofthreeor
随机试题
Theaimoftheagreementisto______.[br][originaltext]TheCanadianpolicesa
Whenshopkeeperswanttolurecustomersintobuyingaparticularproduct,th
AnewstudyfromtheUniversityofNewSouthWaleshasdiscoveredthatdurin
希望工程(ProjectHope)是于1989年发起的一项公益事业,以救助贫困地区失学儿童(youngdropouts)为目的。帮助建设希望小学与资
ACD
A.冷苯中的溶解度不同B.乙醚中的溶解度不同C.水中的溶解度不同D.草酸盐溶解度
当在建建筑物抵押价值包含土地使用权的价值时,该土地使用权必须是有偿获得,并领有国
图1为某市域城镇体系规划。M为中心城市,C为以煤炭、大宗散货为主的港口(5~10
对下丘脑促性腺激素释放激素的正确叙述是 A.属于肽类激素B.神经冲动
(2019年真题)根据《标准施工招标文件》,关于施工合同变更权和变更程序的说法,
最新回复
(
0
)