data assimilation system 中文意思是什麼
data assimilation system
解釋
資料同化系統- 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）。
- system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
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The 3dvar data assimilation system has the ability to assimilate gms - 5 cloud drifted winds and toys data. the numerical simulation experiments of typhoon processes are carried out using the 3dvar data assimilation system
該同化系統有同化gms一5的紅外和水汽軌跡風數據和tovs溫濕數據的能力並可在pc機的linux系統下順利運行。 -
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。 -
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。 -
For understanding the dynamic processes of the all scales cloud systems of mei yu, and the relationship between mei yu system and the summer monsoon of eastern asia, the hubex has been carried on by the cooperation of china and japan in summer since 1998. the data observed by hubex, the data observed by other monsoon experiments and the general data ( gts data ) were merged into the assimilation system of game and made into the game reanalysis data, so how the game reanalysis data
為了更好地理解梅雨鋒區多尺度雲系的能量與水分循環過程以及他們與地面水文過程的相互作用，從而搞清梅雨區雲系的多尺度動力學及其與東亞季風的關系， 1998年夏季中日合作開展了淮河流域能量與水分循環試驗（ hubex ） ，該試驗和game其他試驗的探空加密觀測資料作為原始資料的一部分經過同化分析，得到了game再分析資料。 -
By strengthening the construction of chinese heavy rain database, strengthening the study on radar mosaic, inverse technique and assimilation of detection data, a monitoring and nowcasting system of mesoscale heavy rain covering the whole changjiang valley is to be built
重點學科領域包括暴雨監測技術研究、暴雨形成機理和預測方法研究、暴雨預報應用研究和暴雨災害評估與對策研究等，同時開展中尺度暴雨外場監測試驗基地建設和中國暴雨（資料）數據庫建設。 -
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。 -
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。 -
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。 -
First, choosing the conventional data of the heavy rain case that occurred in the yangtze river drainage basin on july 29th, 1998 and putting it into the assimilation system to study the assimilation effect
該研究是用一個個例進行對比分析，我們選用1998年7月29日00時至30日00時發生於長江流域的一次暴雨過程。 -
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 。 -
Then, the numerical simulation experiments with satellite assimilation are launched on three typhoons in 2002 using the 2dvar data assimilation system. the comparison analysis with other data assimilation methods, such as nudging, is also going on the simulation results to typhoon track influence
使用該二維變分同化系統，對2002年發生的三個臺風進行了同化衛星數據的數值模擬實驗，並對模擬結果同三維觀測鬆弛逼近等數據同化方法對臺風路徑影響做了比較分析。 -
Based on the principles of scaling parallel computing and variational data assimilation, this dissertation systematically studies scaling parallel algorithms and parallel implementing technologies of adjoint models, and designs high performance scaling parallel computing adjoint models. the researches are aimed at the " military global numerical weather advanced prediction system " and the " national global and regional multiple scale advanced prediction system ", and the researches closely follow international parallel computing and numerical weather forecasting technology studies
本文針對「十五」期間「我軍新一代全球數值預報業務系統」 、國家氣象局組織的「新一代多尺度數值預報系統」 ，緊跟國際并行計算和數值氣象技術研究前沿，基於可擴展并行計算和伴隨變分同化原理，研究伴隨模式可擴展并行演算法和并行實現技術，設計高效可擴展并行計算伴隨模式。 -
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：同化空間解析度很高的雷達風場后，能改善中小尺度降水的預報效果，並且能夠得到常規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，補充了常規資料在反映中小尺度系統方面的不足，增強了初始場中的水汽，有利於降水量的增加；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生特大暴雨的貢獻遠大於僅有高濕中心的貢獻。
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