logo - 刷刷题
下载APP
【简答题】

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 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 s.
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 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 yze 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.
What does "Nowcasts" mean according to the passage

题目标签:气象学学者
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】“ 55 年体制 ”这一概念,最早出现于政治学者 升味准之辅 的论文《 _____ ___ 》。

A.
1955 年的政治体制
B.
论战后日本政治体制
C.
战后日本政治变革
D.
55年日本政坛变动

【多选题】主张自由贸易的学者有()

A.
亚当·斯密
B.
李斯特
C.
凯恩斯
D.
大卫·李嘉图
E.
俄林

【单选题】学者们普遍认为世界上最早的公司立法是[1分]

A.
中国清朝的《公司律》
B.
美国的《示范公司法》
C.
德国的《有限责任公司法》
D.
法国的《商事条例》

【单选题】梅奧是下列哪一管理学派的代表学者( )

A.
科学管理学派
B.
管理行为学派
C.
古典管理学派
D.
综合管理学派