3.
The process of making a weather forecast can be separated into three steps: observation and analysis,extrapolation(推论)to find the future state of the atmosphere,and prediction of particular variables.The standard extrapolation technique is to assume that weather features will continue to move as they have been moving.In some cases the third step simply consists of noting the results of extrapolation,but actual prediction usually involves considerable efforts beyond this.
4.
Great attention is paid to weather forecasts during times of severe events(blizzard,hurricane and typhoon,tornado),and so forth.Accordingly,the National Weather Service(NWS)commits significant resources to the forecast of such events.Blizzards or strong extratropical cycles are handled through the usual forecast information channels,with the local NWS office issuing special advisories as appropriate.
5.
A number of new observing systems are being developed for forecasting purposes.These include the NextGeneration Radar digital weather radar,which is intended to detect motions towards or away from the radar installation.In addition,automated systems are being developed for taking observations at surface stations and on board buoys(浮标),ships,and aircraft.The communications,processing,and display systems intended to govern this torrent of further data are still being elaborated(详述).
【2016年陕西省高考英语二轮复习专题训练卷十九:信息匹配(二)】相关文章:
★ (全国通用)2014届高考英语一轮单元复习 限时强化训练二
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (13)
★ 2017届高考英语二轮复习大题冲关秘籍语法填空:考纲解读(含解析)
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (73)
★ 2017届高考英语二轮复习大题冲关秘籍短文改错:名校模拟(含解析)
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (43)
★ (全国通用)2014届高考英语一轮单元复习 限时强化训练一
★ 2017高考四川省广安市英语阅读理解一轮系列训练:27(含解析)
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (71)
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21