预报
- 基本解释 (translations)
- forecast · forerun · herald · predict · prediction · prophesy · vaticinate · forecasts · foreruns · heralded · heralding · heralds · predicted · predicts · prophesied · prophesies · prophesying · vaticinated · vaticinates · vaticinating
- 更多网络例句与预报相关的网络例句 [注:此内容来源于网络,仅供参考]
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The tried predicted results show that the absolute error of assembly average is 0.27‰,...
预报试验表明:预报的总体平均绝对误差为0.27‰,预报相对误差在18%左右,预报误差小于0.5‰的站数占总站数的85%,预报趋势与实测资料基本一致。
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Then the ensemble canonical correlation prediction method is used to predict winter temperature over China.The forecast skill is analyzed and independent samples test is also performed.The results show that di...
结果表明,不同的预报因子对各个地区有不同的预报技巧,以欧亚大陆地面温度为预报因子预报技巧较高,而ECC模式对中国冬季气温有更好的预报能力,预报技巧高于任何一个单因子场的CCA预报;采用回归法的集合平均比简单的等权集合平均预报技巧更稳定。
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A quick and correct forecast of tidal current when oil spill occurs is a key step in the forecast of oil spill. Based on the harmonic constant of tidal component of M2, S2, O1 and K1 in Lingshan Island, Laoshantou and Chaolian Island, and by using harmonic method, the thesis first conducts a current forecast in a single point, and then builds up a current field forecast in Jiaozhou Bay and its adjacent seas. The computed results match well with the actual situation. The method reduces greatly the time of real time current forecast by not using numerical stimulation, so it fit to the two requirements of quickness and correctness in oil spill forecast system.
迅速准确地预测出溢油发生时的潮流情况是溢油环境预测的根本保证,因此文中根据灵山岛、崂山头和朝连岛三处M2、S2,、O1和K1四个主要分潮的调和常数资料,采用调和的方法进行单点的潮流预报,进而建立了胶州湾及邻近海域的预报潮流场;该方法的潮流预报结果与实际情况吻合良好,且因避开了数值计算过程而大大减少了流场实时预报的机时,符合溢油应急预报系统所要求的准确与快速。
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Department of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 2. Department of Hydraulic Engineering, Tsinghua University, Beifing 100084)The existing problems in the design of reservoir flood operations is analyzed, then aiming at the insufficience of the typical flood, the method for reservoir flood operation with classified forecast is presented in this paper.
将水库防洪调度方法划分为两大类:一类不考虑预报,通常是选择"坝前库水位或实际入库流量"作为遭遇洪水量级及改变泄量的判断指标,称为常规防洪调度方法;另一类考虑预报,选择的判断指标多是产流预报的"累积净雨量"或汇流预报的"洪峰流量"或短时"晴雨"预报等信息,简称防洪预报调度方法。
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Furthermore, how to apply the model efficiently in practice is deeply discussed. As the variance produced by the forecasting model as concerned, the real-time revised method of hydrological forecasting is highlighted. Next arranged, the multi-stratum recursive prediction model is put forward to forecast the error series that is a dynamic system. Later, an error selfregressive multi-stratum recursive prediction model is set up as well as a current algorithm offered. Finally, the difference collated model and the gloss control method, which are devoted to updating the mid-long term hydrological forecasting during the meditate period, are put forward.
在综合评述中长期水文预报现有方法和模型的基础上,采用时间序列分析方法,建立中长期水文预报的时间序列组合模型,并对模型如何在实际中有效应用作了较为深入的探讨;针对模型预报所产生的误差,又重点研究了水文预报实时修正方法:提出了采用多层递阶预报方法对误差序列这一动态系统进行预报,建立了误差自回归多层递阶预报模型,并提出了较为通用的解算方法;给出了水文中长期预报中期修正的残差相关模型和总量控制方法。
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Based on the similar area reasonably made by forecast products and the connection of forecast element of the representative station to the other stations in the similar area, and by referring to the objective forecast of refined meteorological factors or the guidance forecast products by higher levels, the platform completed modification and revisal in high space-time density and multiple forecast elemenst in the form of text and figure.
该平台在合理划分预报制作相似区的基础上,以预报制作相似区内订正点与关联点之间各预报要素关联关系为依据,以精细化气象要素客观预报产品或上级指导预报产品为预报蓝本,通过文本、图形两种修改方式,完成对高时空密度、多预报要素值的修改订正。
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By study of the statistic characteristics of flood forecasting errors and their confidence intervals for Nushi watershed at Sanhuajian of the Yellow River and on the basis of a comparison of the precision criterion currently used for flood forecasting with the result of the error confidence interval method, it is concluded that the error of flood forecasting is of the characteristic of skew probability distribution, and that the evaluated results of forecasting errors are different by the above two methods.
因此,本文在三花间伊河卢氏流域洪水预报的基础上研究了误差置信限及误差置信限评定方法,并将误差置信限评定结果与现行水情预报精度标准[1]评定结果进行了比较。1 现行洪水预报评定方法流域洪水预报精度评定内容包括洪峰流量、峰现时间和洪量等。洪水预报误差指标有绝对误差、相对误差和确定性系数3种。预报误差小于许可误差时为合格预报。
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During the period of the activity of reforming the traditional calendar, Xing Yunlu only reformed the calendar according to the calendar idea established in his book Gujin Lüli Kao (GJLLK, Investigation into Harmonics and Calendrical Astronomy from Antiquity to the Present, c.1600). Combined with the analysis of Xing Yunlu's eclipse records collected from the Mingshilu (True Records of the Ming Dynasty) and Mingshi, we pointed out that Xing Yunlu's had not made ultimate improvement to the traditional calendar in his activity of calendar reform.
结合对邢云路在钦天监参预改历活动中预报日月食记录精度的分析,指出:以邢云路为代表的传统历法家在钦天监进行的历法改革总体来说起色不大,除在个别月食预报以及日食食分的预报结果上好于《授时历》的预报结果外,其他预报结果的精度均不如《授时历》,而且从总体上看邢云路新法的水平还不如当时行用的《大统历》,尤其是邢云路预报天启元年四月朔(1621年5月21日)日食出现差错而宣告了他依据传统历法进行改历努力的失败。
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For strong convective weather , it classified all historical sample events into 4 weather patterns (like northwest , trough area ,west wind and southwest current), established 4 characteristic fields of 400hPa height of HLAFS , then according to the principle of the pattern match calculate and compare the real-time HLAFS forecast products-2-using the similar method inside the big and small key areas , establish forecast equation , finally gain conclusion .To duststrom weather, the historical samples were sorted into duststrom and severe duststrom types in 5 regions (they are whole area, west, central, middle-west and middle-east of Inner Mongolia ),moreover set up different sample databases about ECMWF fields (including 500hPa height, 850hPatemperature and sea-level pressure).In order to making duststrom forecast at different time level , we first filtered the real-time data by FAX data ,and then used the method of similar range degree to compare the historical data to the actual data of ECMWF .To precipitation weather ,they were divided into 2 types that suit or unsuit airplane artificial precipitation stimulation in line with their emergence time and district .The appropriate weather physical factors come from T106 were chosen to establish the artificial precipitation stimulation prediction model . In the actual application , we can get prediction result as long as use the real-time forecast data of T213 in the prediction model .
针对强对流天气将历史样本天气分为西北气流型、槽区型、西风气流型和西南气流型等4个类型,并建立其HLAFS资料400hPa四种特征场,按照模板匹配的原理,用相似分析方法在大、小两个关键区中对实时HLAFS预报产品进行计算、比较,再建立预报方程,得出结论;对沙尘暴天气将其按区域分为全区、西部、中部、中西部以及中东部5类,再按强弱分别分为强和一般2类,建立ECMWF的3个场(500hPa高度场、850hPa温度场和海平面气压场)的历史资料库,在用传真资料消空之后,用相似离度方法计算实时ECMWF资料,做出不同时次的预报;对降水天气按出现时间和区域分为适合和不适合飞机增雨作业2类,选择T106资料中恰当的气象物理量因子,用BP神经网络算法建立人工增雨降水预报模型,实际应用中将实时T213相关预报资料代入预报模型即可。
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The system has some advanced functions such as searching multiform NWF product,the change of west wind index on 500 hPa,the physical feature table of every station,the error and comparison of forecast capability of NWF,searching fax picture,and showing 3D picture,etc.
而对数值预报的释用又是整个业务数值天气预报系统的一个关键的组成部分。就大多数数值预报产品本身而言,虽然目前已经具有较高的质量,但由于分析误差和模式自身的误差,对局部地区的天气形势不可能预报得非常准确,因此我们不可能将任何数值预报产品直接用于天气预报,而通过发展数值产品的释用技术来制作气象要素预报是可行的。
- 更多网络解释与预报相关的网络解释 [注:此内容来源于网络,仅供参考]
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anticipation mode:预报模式
预报 anticipation | 预报模式 anticipation mode | 预期分页 anticipatory
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Forecasting:预报
在国际上,有地震学家把不符合上述定义的"预测"等统称为"预报"(forecasting),例如对在一段长时期内的某一不确定的时间发生地震的概率做出估计就应叫作地震预报.
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modern techniques in flood forecasting:现代洪水预报技术
洪水预报调度系统:flood forecasting and dispatching system | 现代洪水预报技术:modern techniques in flood forecasting | 价值:ANN forecasting
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Interpellation of Numerical Forecast Production:数值预报产品释用
中尺度数值预报模式:mesoscale numerical weather prediction | 数值预报产品释用:Interpellation of Numerical Forecast Production | 风化:Weather
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Numerical Value Forecast:数值预报
数值预报:Numerical forecast | 数值预报:Numerical Value Forecast | 中尺度数值预报模式:mesoscale numerical weather prediction
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prediction law:预报律
predicate variable 谓词变项 | prediction law 预报律 | prediction theory 预报理论
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predictor control:提前量调节,预报量控制
predictive control 预测控制,预报控制 | predictor control 提前量调节,预报量控制 | preselect control 预调[参数]控制
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zone weather forecast:地区(火险)天气预报<在正常的火险季节,按消防管理的要求而定期发布的天气预报
zone water supply 分区供水 | zone weather forecast 地区(火险)天气预报<在正常的火险季节,按消防管理的要求而定期发布的天气预报 | zoned egress 分区外出权,分区出路
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spot weather forecast:地点天气预报<根据用户的要求发出的预报
spot type smoke detector 点型感烟探测器 | spot weather forecast 地点天气预报<根据用户的要求发出的预报 | spot welding 点焊
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Prewarning peroid:(预报警阶段)(预报警阶段)(预报警阶段)(预报警阶段)
Prescaler mode (预分频模式)(预分频模式)(预分频模式)(预分频... | Prewarning peroid (预报警阶段)(预报警阶段)(预报警阶段)(预报警阶段), 9-2 | Processor architecture (处理器结构)(处理器结构)(处理器结构)(处理...