initial field造句
例句與造句
- 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
在這個過程中，初始場中降雨區(qū)域上空，位于抬升凝結高度與云頂之間的濕度會予以調(diào)整，作用是要啟動降水過程。 - 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
本文要探索的主要問題是如何把多普勒天氣雷達觀測資料用于中尺度數(shù)值預報，用多普勒雷達觀測資料改進數(shù)值模式的初始場，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
本文以實況資料作初始場，對西北地區(qū)2001年4月8 9日強沙塵暴天氣過程的天氣形勢、風場和溫度場進行數(shù)值模擬，模擬效果比較理想。 - 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，將遺傳算法應用于四維變分資料同化是切實可行而且有效的，這一工作豐富了變分同化的內(nèi)容，使變分同化技術作為提高數(shù)值預報初始場的質(zhì)量這一有效技術得到了進一步的應用。 - 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
本文研究了光場初態(tài)和熱庫性質(zhì)對原子?場耦合系統(tǒng)量子非局域性的影響，分別討論了腔場初始處于壓縮真空態(tài)和壓縮相干態(tài)兩種情形。 - It's difficult to find initial field in a sentence. 用initial field造句挺難的
- 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
基于云判斷進行mm5初始場濕度調(diào)整的個例分析表明衛(wèi)星云圖資料的使用能改善模式的預報性能，尤其是在改善降水預報上有明顯的作用。 - 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
并以此找出加固范圍和加固效果的定性關系，以作為類似盾構始發(fā)工程預加固范圍的參考，并為盾構始發(fā)預加固工程提供思路。 - 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
一些透過非傳統(tǒng)途徑及非定時收到的新類型數(shù)據(jù)，例如經(jīng)精確調(diào)校的遙感平臺所?集的觀測資料，要有效地應用于數(shù)值天氣預報，仍需要進一步研究具體的方案。 - 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
變分同化技術被公認為是提高數(shù)值模式初始場質(zhì)量的有效技術，但其目前所使用的方法是局部優(yōu)化方法，它依賴于計算機資源，在實際業(yè)務中實現(xiàn)要求有較高的條件。 - 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
試驗表明，由于它的加入，增加了初始場中的中尺度信息，改進了中尺度數(shù)值模式mm5的預報，增強了模擬開始階段的降水量,改進了降水量的落區(qū)預報，減弱了模式開始階段的" spin - up "現(xiàn)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濕延遲量資料的三維變分同化比gps可降水量資料同化更容易將gps對大氣的監(jiān)測信息傳遞給mms模式初始場，使得對模式初始濕度、溫度、氣壓和風場的調(diào)整程度大于gps可降水量資料同化對模式初始要素場的調(diào)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
結果表明，如果腔場無損耗且處于真空庫，則量子態(tài)周期性地顯現(xiàn)出一定的非局域性；如果考慮到腔場的損耗和熱庫的平均光子數(shù)，那么，量子態(tài)將會喪失它初始的非局域性，初始量子非局域性喪失的速度與初始腔場的幅度、腔的衰減系數(shù)以及熱庫的平均光子數(shù)有關，場越強、平均光子數(shù)和衰減系數(shù)越大，量子非局域性喪失得就越快。 - 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，作數(shù)值天氣預報時，數(shù)值預報的準確率是隨著預報時間的增長而迅速下降的，造成這種現(xiàn)象的原因主要有兩點：一方面是數(shù)值預報模式的初始場有誤差；另一方面是數(shù)值預報模式有一定的模式誤差。 - 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
同化試驗結果表明：同化空間分辨率很高的雷達風場后，能改善中小尺度降水的預報效果，并且能夠得到常規(guī)觀測資料所不能得到的中小尺度信息，對分析中小尺度系統(tǒng)結構具有重要意義；同化雷達濕度場效果不明顯，可能與降水類型和同化時刻有關；而直接在初始時刻加入雷達濕度場，補充了常規(guī)資料在反映中小尺度系統(tǒng)方面的不足，增強了初始場中的水汽，有利于降水量的增加；同時同化雷達風場和雷達濕度場的試驗表明，水汽的輸送和局地的水汽輻合對于產(chǎn)生特大暴雨的貢獻遠大于僅有高濕中心的貢獻。 - 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
而利用本文的非線性優(yōu)化方法；通過比較最優(yōu)初始場與初始觀測資料之差（范數(shù)意義下）和觀測精度（這個觀測精度應該是已知的）的大小，即使在模擬效果好的情況下，仍然可以在某種程度上對這一問題作出口答。