data assimilation model 中文意思是什麼
data assimilation model
解釋
資料同化模式- data : n 1 資料，材料〈此詞系 datum 的復數。但 datum 罕用，一般即以 data 作為集合詞，在口語中往往用單數...
- assimilation : n. 1. 吸收（作用）。2. 同化（作用）。
- model : n 1 模型，雛型；原型；設計圖；模範；（畫家、雕刻家的）模特兒；樣板。2 典型，模範。3 （女服裝店僱...
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The article designs the mesoscale numeric forecasting modek the scheme of objective analysis and four - dimensional data assimilation of global meteorologic data and the bidirectional nested scheme of mm5 model in detail
對中期數值天氣預報模式、全球氣象資料客觀分析和四維同化方案，以及mm5模式的雙向嵌套方案進行了詳細設計。 -
The geostationary meteorological satellite ( gms - 5 ) derived wind data from infrared and water vapor images and tiros operational vertical sounder ( toys ) temperature and humidity data enter the assimilation system after the quality control of mm5 model
地球同步衛星（ geostationarymeteorologicalsatellite （ gms - 5 ） ）的紅外和水汽軌跡風數據及來自noaa極軌衛星的tovs （ tirosoperationalverticalsounder ）溫、濕數據作為觀測資料，經過mm5模式的質量控制而最終進入該同化系統。 -
The diurnal constituents at some of the crossover points and all of the semi - diurnal constituents at all of the crossover points as well as 16 tidal gauge data are assimilated in the ocean model, this is because the assimilation of the diurnal constituents at some crossover points make the result worse. the improvement is 36 % for m2, 54 % for s2, 42 % for k, 30 % for 01 compared with the results of dynamic model without assimilation. in the stratified ocean, mixing controls the intensity of the ocean current
為了克服交叉點上全日分潮精度較低的局限，文中主要將半日分潮同化進模式中，而全日分潮只在部分交叉點上進行了同化，同時同化了沿岸16個驗潮站的調和常數，同化高度計資料和沿岸資料后， m _ 2 、 s _ 2 、 k _ 1 、 o _ 1四個主要分潮的結果精度分別提高36 、 48 、 20 、 12 。 -
Developing data assimilation system of numeric predict model by using the adjoint code technique is one of new four - dimensional data assimilation methods
用伴隨碼方法構造數值預報模式的伴隨同化系統是目前較新的四維同化方法之一。 -
Developing data assimilation system of numeric predict model by the use of adjoint coding technique is one of the new four - dimensional data assimilation methods
而用伴隨碼方法構造數值預報模式的四維變分伴隨同化系統則是目前國際主流的方法之一。 -
The kalman filter is introduced and explored by assimilating sea temperature observations into one - dimensional numerical temperature model, which is decomposed into two parts, one part is the certain, the other is the random. then a data assimilation model is set up, it can assimilate sea temperature continuous observations data
在此基礎上，利用kalman濾波原理，以一維海溫垂直分佈的數值模式為例，通過對原模式進行分解，得到確定性模式和隨機過程兩部分，繼而建立了一個可同化海溫連續觀測資料的數據同化模式。 -
The study on the numerical simulation experiments to typhoon processes using 3dvar assimilation system also carries out. the conclusions are drawn after comparing the wind field, geopential height, relative humidity and several sounding profiles at sounding stations between control experiment and 3dvar data assimilation experiments. the results show that the model variables are more harmony in dynamic and physics to the experiments of 3dvar assimilation
在對三維變分實驗與對應控制實驗的風場、位勢高度場、相對濕度場和幾個探空站探空曲線的模擬結果，及對所模擬的臺風路徑和路徑的偏差比較分析研究的基礎上，得到如下結果:各模式物理量之間在三維變分數據同化后的分佈，在動力上和物理上都更加協調和合理，更加符合實際觀測。 -
A data assimilation experiment is carried out through combination the model with temperature measurements from the 165 e moorings on the equator, which collected by tao / triton ( tropical atmosphere and ocean project ) array of bugs
並通過在赤道太平洋， 165 e ，熱帶大氣和海洋（ tropicalatmosphereandoceanproject ） ，即tao triton錨系浮標陣列觀測點，選取一段時間觀測資料，進行kalman濾波試驗。 -
The results of numerical experiments, using the four - dimensional variational data assimilation system of the nonhydrostatic mesoscale model mm5, show that : the tangent linear model and adjoint model conducted by keeping the " on - off " switches the same as the basic state, can provide a good approximation of the first - order information to the nlm perturbation and a good descent direction for the minimization procedure ; switching on and off at every other time step in the kuo cumulus parameterization scheme do n ' t impact the convergence rate of cost function ; the existence of the switches do n ' t impact improvement to the mm5 model rainfall prediction because that not only specific humidity, but also wind, temperature and pressure are assimilated into the model
非靜力中尺度數值模式mm5的四維變分資料同化系統進行的數值試驗結果表明： 「開關」變量保持與基態一致，所構造的切向線性模式能夠提供關于非線性模式擾動的一階近似，伴隨模式所計算的梯度值能夠為最小化過程提供較好的下降方向；郭氏降水參數化方案中對流每隔一個積分步的交替發生並不影響目標函數最小化的收斂速度； 「開關」變量的存在也不影響將風、溫度、氣壓和比濕結合起來同化對mm5降水預報準確性的提高。 -
In this thesis, studies were carried out on the theoretical schemes of data assimilation and their applications on sea fluid field, the three - dimensional baroclinic primitive equation model - hamburg shelf ocean model ( hamsom ) - being one part of the three ones that constitute the data assimilation ( da ) system. effective modification on schemes of da were obtained and applications on topex / poseidon ( t / p ) data results that covering the area of yellow sea and east sea were done. the final results became closer to the objective nature
本文以三維陸架海模型（ hamsom ）作為數據同化系統的模型部分，深入研究了數據同化的理論方法和在海洋流場數據處理中的應用，對海洋場的數據同化方法提出了行之有效的改進，並將中國黃、東海區域內的topex poseidon （ t p ）數據和理論模式的計算結果相結合，進行同化處理，獲得了更接近於真實的結果。 -
The study of the thesis is based on such background to carry out the satellite data assimilation methods connected with mm5 mesoscale meteorology model operational forecast, and to serve for the marine environmental forecast and prediction
本論文的任務正是基於此背景，而開展對衛星氣象數據同化方法及其應用的研究，尋求同mm5中尺度氣象模式業務預報相結合的數據同化方法，為海洋環境預報服務。 -
Four - dimensional variation data assimilation ; aws precipitation assimilation ; meso - scale numerical model ; torrential rain simulation
四維變分自動站降水量同化中尺度數值模式暴雨模擬 -
Many researchers have employed kalman filter ( kf ) scheme to data assimilation, which manifests its validity in blending the model results and data. however, the major difficulty in applying the kf scheme to data assimilation is its enormous size of the system, which leads to the suboptimum in practical applications
本文根據「最大限度保留原來的主要信息，盡可能地簡化計算」的原則，應用『 svd分解推導了簡約形式的卡爾曼濾波方法，得到了該方法的簡約表達公式，同時，還得到了截斷誤差部分的伴隨發展公式，它可用於探討截差本身的動態發展。 -
The result shows that the mm5 adjoint - model assimilation system can effectively assimilate the conventional data and adjust the initial field
對比研究結果表明， mm5伴隨模式能有效同化常規觀測資料，調整初始場。 -
A two - dimensional variational ( 2dvar ) data assimilation system connected with mm5 model is set up which based on the augmented lagrangian algorithm of sasaki
本論文建立了基於sasaki增廣lagrange運算元演算法並和mm5中尺度模式相結合的二維變分同化系統。 -
The typhoon track errors at model integral 24 hours and 48 hours reduce about 5 % and 10. 5 %, respectively. though numerical simulation experiments of typhoon processes using 2dvar data assimilation system is not so good as that of the nudging method
但就所有的同化實驗整體而言，臺風路徑誤差在模式積分24時和48時分別減小約5和10 . 5 ，對單個臺風路徑誤差可減少30 - 50 。 -
In these experiments, conventional observation data and unconventional data ( cloud - derived wind ) is used. by comparison of the results of different experiments, it is known that the using of unconventional data in the adjoint assimilation model will correct the topography more effectively than using only the conventional observation data. the forecasting conducted on the basis of this terrain field can be improved by contrast to the results using only conventional data
利用mm5伴隨模式對常規資料和非常規資料雲導風進行同化，通過不同的試驗研究，結果發現，在伴隨模式中加入非常規資料雲導風能夠比僅使用常規資料更有效地修正模式地形參數，將此地形場作為模式地形所做預報結果比只使用常規資料能夠有效改善。 -
The paper ' s experiments also reveal that it is far beyond the need of improving objective and quantitative precipitation prediction to have only a mature mesoscale model, in effect, the temporal and spatial accuracy of data is crucial, and that radar dat a ' s 4d variational assimilation in mesoscale model is an efficient way to solve the problem of the temporal and spatial accuracy of data
本文的試驗結果還表明：要想提高客觀定量的模式降水預報，僅有一個成熟的中尺度模式是不夠的，資料的時空精度至關重要，而多普勒天氣雷達資料在中尺度模式中的四維變分同化是解決資料時空精度問題的有效手段。 -
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值模式初始場質量的有效技術，但其目前所使用的方法是局部優化方法，它依賴于計算機資源，在實際業務中實現要求有較高的條件。
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