查询词典 primitive equation

In this paper a genetic algorithm four-dimension data assimilation system was applied to the more complex MM5 model, we verify the performance of the genetic algorithm assimilation system, we take the a heavy rainfall process during 04-05, July, 2003 as the experimental research object, and carry out data assimilation experiment of actual observation data, compare the experimental results of the genetic algorithm assimilation system and MM5 adjoint model assimilation system with the experimental results without assimilation, the following is the result:genetic algorithm assimilation system is used not only in a barotropic primitive equation but also in the complex model, MM5, for example, in the ideal experiment the result of the genetic algorithm assimilation system is better than the MM5 adjoint model assimilation system, in the assimilation experiment of actual observation data, whichever assimilation system is used, the initial field of numerical prediction model is effectively improved and the prediction effect of physical field and rainfall are somewhat enhanced.

本文将遗传算法的四维同化系统运用到更复杂的MM5模式中，在理想实验中验证遗传算法同化系统的性能，并以2003年7月4日"南京暴雨"作为研究对象，进行了实际观测资料的同化，并将遗传算法同化系统和MM5伴随模式同化系统得到的结果跟未同化的结果进行了比较，结果如下：遗传算法同化系统不仅可以用在正压原始方程模式上，同样也可以用在MM5等复杂模式上，理想实验证明了遗传算法同化系统优于MM5伴随同化系统，在实际观测资料同化中，采用两种方法的同化系统都能有效地改善数值预报模式的初始场，能在一定程度上提高物理量场和降水量的预报效果。

In the end, we built a model of the 4-D variational data assimilation for a barotropic primitive equation based on GA and compared with the adjoint assimilation model.

同时，以正压原始方程组为例建立了基于遗传算法的变分同化模型，并从多方面与伴随模式变分同化系统进行了分析比较。

In this paper,five cases of prediction experiments for two typhoons in 1992 are carried out using a limited area two way movable nested primitive equation model for typhoon track prediction. The results show that the predicted tracks are well consistent with the observations.

采用一个有限区域原始方程双向相互作用的移动套网格台风路径数值预报模式，对1992年的两个台风进行了5个个例预报试验，结果表明预报路径和实况有很好的一致性。

The model is a 10-level limited-area primitive equation model, with horizonatal resolution of 22.5km.

这样预报对流系统的发生就变成了吸引子的计算，不严格地依赖于初始状态。

In this thesis, the barotropic primitive equation under the rectangular coordinate system and atmospheric circulation equation under p coordinate system are.

从正压原始方程开始，运用分层理论研究大气环流方程组定解问题的适定性，以及适定的定解问题(包括初值问题、边值问题和混合问题)在解析函数类空间准确解的求解方法。

In this work, however, we follow an energy perfect conserving semi-implicit scheme of a European Centre for Medium-Range Weather Forecasts type sigma-coordinate primitive equation which has recently successfully formulated.

本研究在成功地构造实现其全能量完全守恒的半隐式方案基础上，进行了此守恒方案与欧洲中期天气预报中心的σ--坐标原始方程全球谱模式半隐式方案间的实际资料对比实验。

Based on stratification theory, begin with the barotropic primitive equation, some theoretical problems of atmospheric equations are discussed, including the well posedness of their initial value problem, boundary value problem and mixed problem.

摘要从正压原始方程开始，运用分层理论研究大气环流方程组定解问题的适定性，以及适定的定解问题(包括初值问题、边值问题和混合问题)在解析函数类空间准确解的求解方法。

In this thesis, circulation of the West Pacific Ocean and the East China Sea is simulated, with a three dimensional baroclinic primitive equation model - MIT general circulation model.

本文采用麻省理工大学的环流模式MIT general circulation model，对西北太平洋和渤黄东海环流进行网格嵌套数值模拟，成功地得到了上述海区的环流特征和季节变化规律。

The diagnosis of typhoon secondary circulation is carried out in terms of the SawyerEliassen secondary circulation euation version of the primitive equation model with the aid of the composite field of five offsea typhoons in explosive development.

利用原始方程模式的Sawyer－Eliassen次级环流方程，对由5个爆发性发展的台风所合成的要素场进行了次级环流的诊断。结果表明，在各强迫项中，地转形变和非绝热加热强迫作用较大。

To get knowledge on Kuroshio large scale circulation and how the Kuroshio affects adjcent area climate, a three-dimension primitive equation ocean model MITgcm was used to simulate the kuroshio＇s climatological pattern.

为了掌握黑潮的大范围流动结构以及它对气候的影响，利用三维原始方程模式MITgcm计算了西北太平洋海区的多年平均流态。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失