four-dimensional data assimilation 中文意思是什麼

four-dimensional data assimilation 解釋
四維資料同化
  • four : n 1 四人小組；（套在車上的）四匹馬。2 四的記號；（骰子的）四點；（鐘點的）四時；四歲。3 〈pl 〉 ...
  • dimensional : adj. 1. 尺寸的。2. 空間的。3. 【數學】因次的；…次（元）的。
  • 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）。
  1. Four - dimensional variational assimilation of aws precipitation data

    用四維變分法同化自動站降水資料
  2. 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。
  3. 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。
  4. 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。
  5. 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。
  6. As an efficient approach to improve the accuracy of numerical weather prediction, four - dimensional variational assimilation is widely focused on by the domestic and overseas experts. one of its important characteristics is that the data in one time can influence previousanalysis results, which can not only provide the optimized initial condition but also make up observation datum ' s absence in some areas

    四維變分同化方法作為一種提高數值天氣預報的有效方法受到國內外專家的廣泛關注，其重要特點是一個時次的數據可以影響到它以前時間的分析結果，因此不但可以為數值預報模式提供初始場，而且可以對觀測資料不足的地區加以彌補。
  7. 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
  8. To that end, more involved data assimilation methods, e. g. three - dimensional or four - dimensional variational analysis and extended kalman filtering technique, will also be explored

    資料同化可能需要採用更深入的運算方法，如三維或四維變分法及增強卡爾曼濾波等技術。
  9. Use radar and satellite data to improve initial humidity field and four dimensional variational data assimilation to improve initial wind field, and simulate it with mm5, which has improved the simulation ability of meiyu heavy rainfall

    利用雷達、衛星資料對初始濕度場的改進和四維變分同化對初始風場的改進進行中尺度數值模式（ mm5 ）模擬，提高了梅雨暴雨模擬能力。
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