initial field造句
例句与造句
- In this process , the moisture of the initial field between the lifting condensation level and the cloud top at the point where rain is observed is adjusted to allow precipitation process to be switched on
在这个过程中，初始场中降雨区域上空，位于抬升凝结高度与云顶之间的湿度会予以调整，作用是要启动降水过程。 - The main issue of this paper is how to make use of the observation of doppler radar to mesoscale numerical forecasting , using doppler radar data to improve on the initial field of numerical model , and then examine the results
本文要探索的主要问题是如何把多普勒天气雷达观测资料用于中尺度数值预报，用多普勒雷达观测资料改进数值模式的初始场，看其效果。 - Using the actual data as initial field , this paper simulates numerically the weather pattern , wind field and temperature of the strong sandstorm in northwest area during april 8 - 9 , 2001 and the simulation results are very good
本文以实况资料作初始场，对西北地区2001年4月8 9日强沙尘暴天气过程的天气形势、风场和温度场进行数值模拟，模拟效果比较理想。 - Consequently , this scheme is feasible and valid . the research enriches the contents of variational assimilation and makes it more extensive application , which increases the quality of initial fields in nwp
因此，将遗传算法应用于四维变分资料同化是切实可行而且有效的，这一工作丰富了变分同化的内容，使变分同化技术作为提高数值预报初始场的质量这一有效技术得到了进一步的应用。 - In this thesis , we studied the effects of the initial field state and thermal environment on quantum nonlocality and purity in atom - field system , in which the field initially in the squeezed vacuum state and in the squeezed coherent state are considered respectively
本文研究了光场初态和热库性质对原子?场耦合系统量子非局域性的影响，分别讨论了腔场初始处于压缩真空态和压缩相干态两种情形。 - It's difficult to find initial field in a sentence. 用initial field造句挺难的
- At grid point where the satellite cloud fraction is nonzero we adjust the relative humidity based on mm5 cloud fraction equation . then the initial field of the relative humidity was adjusted , and was used in the mm5 , we made a few examinations to improve the forecast result
基于云判断进行mm5初始场湿度调整的个例分析表明卫星云图资料的使用能改善模式的预报性能，尤其是在改善降水预报上有明显的作用。 - At last , the relationship between scope and effect of reinforcement is obtained , and the function curve is derived , which are expected to serve as reference for pre - reinforcement scope of similar initial field projects and provide perspectives for initial field pre - reinforcement projects
并以此找出加固范围和加固效果的定性关系，以作为类似盾构始发工程预加固范围的参考，并为盾构始发预加固工程提供思路。 - Model physics will become more sophisticated as model resolutions increase further . new data types at irregular hours from non - conventional sources , particularly from highly tuned remote - sensing platforms , will be studied for potential nwp applications to improve model initial fields
一些透过非传统途径及非定时收到的新类型数据，例如经精确调校的遥感平台所?集的观测资料，要有效地应用于数值天气预报，仍需要进一步研究具体的方案。 - The technique of variational data assimilation has been considered as a effective one in improving the quality of initial fields of numeric forecast model . however , in practice , it needs higher condition by using local optimization methods and depending the computer resources
变分同化技术被公认为是提高数值模式初始场质量的有效技术，但其目前所使用的方法是局部优化方法，它依赖于计算机资源，在实际业务中实现要求有较高的条件。 - Experiment results show that , due to addition of information of aws precipitation data , the initial field of test is enhanced in meso - scale information , and it matches the model better in thermo - dynamical mechanism . after assimilation , the simulation is improved . the precipitation during the start period in simulation is increased , and the situation of simulating precipitation matches real situation better
试验表明，由于它的加入，增加了初始场中的中尺度信息，改进了中尺度数值模式mm5的预报，增强了模拟开始阶段的降水量,改进了降水量的落区预报，减弱了模式开始阶段的" spin - up "现象。 - On the whole , gps pw data assimulation will improve precipitation prediction . 6 , gps zwd assimulation ingests atmospheric information observed by gps into mm5 initial fields more easily than gps pw assimulation so that the initial fields of humidity , temperature , pressure and wind can be modified in a greater degree
6 、 gps湿延迟量资料的三维变分同化比gps可降水量资料同化更容易将gps对大气的监测信息传递给mms模式初始场，使得对模式初始湿度、温度、气压和风场的调整程度大于gps可降水量资料同化对模式初始要素场的调整 - It is found that if the cavity dissipation is losses and the reservoir is in vacuum , the quantum nonlocality appears periodically . when the cavity dissipation and the average photon number of the reservoir are taken into account , the initial quantum nonlocality will be lost . the rapidity of the loss of the initial quantum nonlocality depends on the amplitude of the initial field , the average photon number n and the cavity damping constant k
结果表明，如果腔场无损耗且处于真空库，则量子态周期性地显现出一定的非局域性；如果考虑到腔场的损耗和热库的平均光子数，那么，量子态将会丧失它初始的非局域性，初始量子非局域性丧失的速度与初始腔场的幅度、腔的衰减系数以及热库的平均光子数有关，场越强、平均光子数和衰减系数越大，量子非局域性丧失得就越快。 - The accuracy of numerical weather ( climate ) prediction is decreasing along with prediction time because initial field and numerical model have errors . to reduce these two kinds of error , meteorologists have done a lot of work by making sensitivity analysis of numerical model
一般而言，作数值天气预报时，数值预报的准确率是随着预报时间的增长而迅速下降的，造成这种现象的原因主要有两点：一方面是数值预报模式的初始场有误差；另一方面是数值预报模式有一定的模式误差。 - The assimilation experimentation results indicate that after assimilating radar wind field of small spatial scale , mesoscale and small - scale precipitation prediction can be improved and mesoscale and small - scale information which ca n ' t appear by tradition datum can be gained , which is valuable to analyze the mesoscale and small - scale system structure ; the effect assimilating radar humidity field is n ' t obvious , which is perhaps correlation with precipitation types and assimilating time . the results also show that adding radar humidity field to initial condition at initial time can supply the gap of the regular data in reflecting the mesoscale and small - scale systems , strengthen the humidity in the initial field , and eventually help to improve precipitation . the experiment of assimilating radar wind field and radar humility field at the same time shows that vapor transportation and local vapor divergence play more significant role in causing excessively heavy rain than only high wet center
同化试验结果表明：同化空间分辨率很高的雷达风场后，能改善中小尺度降水的预报效果，并且能够得到常规观测资料所不能得到的中小尺度信息，对分析中小尺度系统结构具有重要意义；同化雷达湿度场效果不明显，可能与降水类型和同化时刻有关；而直接在初始时刻加入雷达湿度场，补充了常规资料在反映中小尺度系统方面的不足，增强了初始场中的水汽，有利于降水量的增加；同时同化雷达风场和雷达湿度场的试验表明，水汽的输送和局地的水汽辐合对于产生特大暴雨的贡献远大于仅有高湿中心的贡献。 - This is the main difference between nonlinear optimization method and other methods . ( 2 ) given a numerical model and a kind of observational data , it is difficult for traditional methods to separate model errors and initial errors . but nonlinear optimization method can do it by comparing the observational accuracy with the difference between the optimal initial field and initial observational data , even if when simulation results are good
而利用本文的非线性优化方法；通过比较最优初始场与初始观测资料之差（范数意义下）和观测精度（这个观测精度应该是已知的）的大小，即使在模拟效果好的情况下，仍然可以在某种程度上对这一问题作出口答。