查询词典 hindcast

Based on observed and hindcast data, a bivariate Pearson Ⅲ distribution is adopted to calculate the joint probability of extreme wind velocity and wave height.

本论文以观测和后报资料为基础，针对我国渤海某区的特点，将二维皮尔逊Ⅲ型分布用于极值风速与波高的联合概率计算，综合比较多种统计模式所求得的设计荷载，对我国边际油田开发的环境条件设计标准提出建议。

Based on the concept of energy balance,an empirical formula is set up to hindcast the volume of silt-sand sudden siltation.

文中以能量平衡为基础，建立计算粉砂骤淤的经验公式。

The RegCM_NCC can reproduce the averaged pattern of average temperature and precipitation during the 20-year hindcast summer.

从模式20年回报的平均状况来看，模式基本上能够反映出中国夏季气候的平均状况。

They are beginning a large-scale trial to see whether FRET can accurately "hindcast" the clinical outcomes associated with 2,000 breast-cancer biopsies.

他们正开始大规模的试验，以检验FRET能否精确&回验&测试2000个乳腺癌切片所得出的临床结果。

Ensemble size has been estimated by using the hindcast results of 18-year(1980-1997), 28 members contained in each year.

利用中国科学院大气物理研究所IAP L2 AGCM1.1模式18年(1980～1997年，每年包含28个积分)的集合后报试验结果，讨论了数值预测中的最小集合个数问题。

The spatial distribution of correlation coefficient between hindcast and observation shows that high value areas are different among these methods. So it is hard to say which method is better than others. Thus three predicted results should be considered as well as distribution of correlation coefficient before final extreme high temperature prediction. The predictions by these methods for July, 2007 were generally close to the observation.

并以相关系数为衡量指标，应用交叉检验方法对三种方法的预测效果进行分析，结果表明不同方法高相关区的空间分布存在差异，在进行高温预测时，应综合各方法高相关区的预测结果给出综合预测意见。

Thus, for three tropical cyclones occurred on different regions, three sets of altimeter-derived data of the sea surface wind and wave are selected, their structural features and relations between the wind and the wave under the influence of the tropical cyclones are analyzed respectively, finally, the most frequent occurring relations between the sea surface wind and the wave of the tropical cyclone over the South China Sea and two hindcast methods for wind field of typhoon based on altimeter-derived wind speed are presented.

据此，选取了高度计获取的3个出现在不同海域的热带气旋影响下的海面风、浪资料，进一步分析各个气旋影响下的海面风、浪结构特征及其关系，并给出了南海海域气旋海况下最可能的海面风、浪关系以及基于高度计风速资料的两种台风风场后报方法。

Year hindcast experiments (1983-2002) and 5-year forecasts of summer average temperature and rainfall over China are presented by using regional climate model that is a nested global atmosphere ocean coupled model.

使用国家气候中心全球海气耦合模式嵌套区域气候模式对1983-2002年中国夏季平均气温和降水进行了数值回报试验，并对2003-2007年夏季进行实时预报。

A hindcast data the for years was established.Then a linear model was set up with the data set.The test for the precipitation field in summer was conducted.It shows that the optimal blending method can improve the forecast skill significantly,but the skill varies year-to-year.

首先运用多种方法建立多年试报数据集，随后对数据集构建线性模型，用此模型对我国汛期(6-8月)降水场进行了试验，证明最优调合法能显著提高预报技巧，但其效果有明显的年际差别。

With the IAP Prediction System of Short-term Climate Anomaly, two sets of seasonal and extra-seasonal ensemble hindcasts have been performed during the period of 1980～1994 in order to assess the prediction skill of the IAP PSSCA with two different schemes The difference of the two schemes is in the different version of AGCM used, with the IAP AGCM 1 1 in one scheme and the IAP AGCM 1 2 with an improved surface albedo parameterization in the other Comparisons of the hindcast results with the observations show that IAP PSSCA is capable of predicting the precipitation anomaly to some extent In the eastern China largely affected by Asian monsoon and SST anomalies, the prediction skill is relatively high, especially in the Southeastern China where the anomaly correlation coefficient can reach as high as 0 50 in the severe flood and drought years This may suggest that the possible mechanisms for these severe disasters have been well captured by the IAP PSSCA The prediction skill is higher for the modified model AGCM 1 2 as the model's climatological state is well simulated This indicates that models with reasonable land process will improve the prediction skill for short-term climate prediction

利用中国科学院大气物理研究所研制的短期气候距平数值预测系统，种版本的大气环流模式：AGCM 1.1和AGCM 1.2，分别以2月11～19日的9天大气观测值为初始场，以给定海温为边界场，对1980～1994年的15年的降水异常进行了两组集合后报试验。对试验结果进行定量评估表明：IAP PSSCA对降水异常具有一定的预测能力，特别是在中国东部受东亚季风及海温异常影响的地区，IAP PSSCA具有较高的预报技巧，其中以东南区域(包括江淮流域和华南地区)最高，尤其是对有洪涝灾害的降水异常年，距平相关系数在0.50左右，接近可供业务使用的要求，说明模式能够抓住在东亚季风区存在的某种物理机制，从而提高了这一地区的预报技巧；另外，两个大气环流模式相比，改进了地表反照率的AGCM 1.2的15年集合平均预测技巧略高于AGCM 1.1，特别是在华北地区，预测效果有明显提高，这表明改进地表反照率从而改进了模式的气候平均态的模拟，能提高气候模式的预测能力，说明较好的陆面过程引入模式对短期气候预测是有益的。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。