precipitable water 中文意思是什麼

precipitable water 解釋
可沉澱的水
  • precipitable : adj. 【化學】沉澱性的，能使沉澱的。
  • water : n 1 水；雨水；露；〈常作 pl 〉 礦泉，溫泉；藥水。2 〈常 pl 〉水體；水域；水道；海；湖；河；海域；...
  1. First, based on the historical data of 20 years of henan province, the cloud seeding operation cases in april and october in the central region of henan province were evaluated by cluster - analysis - based floating control historical regression method with uniform precipitation and atmospheric precipitable water as meteorological covariates, cluster - analysis - based floating control historical regression method with uniform precipitation as meteorological covariate, and floating control historical regression method ( fcm )

    首先，根據河南省近20年的歷史資料，分別用以降水量為協變量的ca - fcm方法、以降水量和整層大氣可降水量為協變量的ca - fcm方法和浮動對比區歷史回歸統計檢驗方法（ fcm ） ，對河南省4月和10月增雨作業進行評估。
  2. Then, six evaluation methods ( double ratio analysis evaluation method using regional rainfall tendency control for single cloud seeding operation case, regression analysis evaluation effects on the bases of regional correlation and developing tendency of rainfall, multiple regression analysis evaluation effects on the bases of regional developing tendency of rainfall, cluster - analysis - based floating control historical regression method with uniform precipitation and atmospheric precipitable water as meteorological covariates, cluster - analysis - based floating control historical regression method with uniform precipitation used as meteorological covariate, and float ing control historical regression method ) were compared and analyzed with the case of the cloud seeding operation on 5 april 2002 in henan province

    然後，以河南省2002年4月5日飛機增雨作業為個例，對作業區域趨勢對比雙比分析評估方案、區域趨勢相關回歸分析方案、區域趨勢多元回歸分析方案、以降水量為協變量的ca - fcm方法、以降水量和整層大氣可降水量為協變量的ca - fcm方法和fcm方法6種評價方案進行分析比較。
  3. In the end, cluster - analysis - based floating control historical regression method with uniform precipitation and atmospheric precipitable water as metoorological covariates could more validly evaluate efficiency of cloud seeding operations and significant level of ca - fcm method was higher than the other methods, because it adopted cluster analysis which highly improved the correlativity between rainfall distributions in the control area and target area, and used grid interpolation which enhanced exactness of calculating precipitation rainfall, and chose atmospheric precipitable water as the covariant which increased the inferential accuracy of natural rainfall on the cloud seeding operational area

    最後，得到以降水量和整層大氣可降水量為協變量的ca - fcm方法，由於採用聚類分析（ ca ）方法，提高了對比區和影響區相關性；採用網格插值技術提高了雨量的計算準確度；引入了不受催化影響的物理協變量（整層大氣可降水量） ，提高了作業區自然降水量估計值的準確性；所以評估效果最好，顯著水平高於0 . 05 。
  4. Experiment on driving precipitable water vapor from ground - based gps network in chengdu plain

    觀測網遙感大氣可降水量的初步試驗
  5. Atmospheric precipitable water vapor is one of the most important parameter to li model

    在li模式中有一個重要的輸入參數是大氣可降水量。
  6. The modis atmospheric precipitable water vapor is precise enough as the input parameter to li - model

    這樣的精度對作為li模式的輸入參數來說精度已經足夠了。
  7. Based on above discussions, a new method for calculating the precipitable water was put forward by combing the above both data

    研究結果表明，其估算的精度超過單獨使用衛星資料或者地面濕度參量估算的精度。
  8. In order to verify the reliability of modis atmospheric precipitable water vapor, we used the ncep atmospheric water vapor data

    為了驗證modis大氣可降水量資料的可靠程度，本文利用ncep的大氣可降水量資料對其進行了檢驗。
  9. There were also obvious " hot centers " and " wet centers " in the distribution of the precipitable water, yet the numbers of those centers were less than the retrieved data

    其水汽場分佈同樣存在明顯的「干中心」和「濕中心」 ，但是其「干中心」和「濕中心」的個數較少，與衛星資料反演的有差異。
  10. Gps observation which is about 2km far away from radiosonde site is comparable to radiosonde with a absolute bias of 2. 13mm on precipitable water ( pw ) observation and 1. 28cm on zenith total delay ( ztd )

    與常規探空觀測相比， gps測量的可降水量有很好的代表性。在相距2km時，兩種測量手段測量可降水量和總延遲量的平均絕對偏差分別為2 . 13mm和1 . 28cm 。
  11. Furthermore, the precipitable water in cloudy sky was also calculated by the ground humidity parameter data. the calculated data were of high precision and low errors so that it was convenient to apply for investigations

    估算的水汽場與用地面濕度參量資料估算的水汽場基本一致，僅在數值上有所差別，但是由於該方法的單點估算精度較高，所以具有更高的可信度。
  12. Using the ground humidity parameter data, the precipitable water of single station was more accurate than the data retrieved from satellite data. but it was of low spatial and temporal resolutions compared with that retrieved from satellite data

    用地面濕度參量資料（地面水汽壓）估算晴空大氣可降水量，其單站的估算結果比用衛星資料反演的結果要精確，但是估算的水汽場時空解析度不如衛星資料反演的高。
  13. To improve the precision of using gps remote sensing atmosphere precipitable water vapor, some scholars propose to set up a local model by taking advantage of local meteorologic data in the air, so as to improve the result of using universal model

    摘要為進一步提高利用gps遙感大氣綜合水汽含量的精度，部分學者提出了利用當地探空氣象資料建立局部區域模型，以改善採用通用模型計算綜合水汽含量結果的觀點。
  14. The hydrometeors distribution in mcc illustrat that the precipitable ice is dominant which fills in the cloud cluster in almost entire troposphere with maximum cores at the mid - levels. rain water and cloud liquid water are in the middle and lower troposphere, and cloud ice water only scatters at the 8 - 18km upper levels

    水凝物垂直分佈顯示， mcc中可降水冰含量最大，分佈在幾乎整個對流層，雨水和雲水主要分佈在的對流層中、低層，而雲冰則分佈於高層大氣中。
  15. In this paper we used satellite data and ground humidity parameter ( water vapor pressure ) to retrieve the precipitable water in cloudless sky and cloudy sky. the precipitable water got from high levels sounding stations was chosen as the real value for tests

    本文利用衛星資料、探空站和地面站的常規觀測資料對晴空及雲天大氣的可降水量進行了估算，並且利用高空探測資料計算的值作為真實值，對估算得到的結果進行檢驗。
  16. ( 3 ) the mean features of vapor water in the atmosphere in the east of nwc between during the great drought affair and dry years are contrasted and shows that, the precipitable water in the whole troposphere is evidently reduced, and the vapor transport is also weakened, the degree of convergence of water vapor is lessened

    （ 3 ）對比西北地區東部重大幹旱事件期間和典型濕年大氣水分平均特徵發現：干年西北地區東部全區整層大氣可降水量明顯少於濕年，且水汽輸送減弱，水汽輻合程度也有所減小。
  17. Lastly, the precipitable water ( pv ) and vapor transport flux during the great drought affair in the east of nwc in 1990s " have been analyzed and compared with what during wet years. the reason that resulted to that drought affair was studied from the point of water vapor in the atmosphere

    再次，對上世紀90年代西北地區重大幹旱事件期間大氣可降水量、水汽輸送等進行了分析，並與典型濕年進行對比，從大氣水分特徵的角度探討了這次重大幹旱事件的可能形成原因。
  18. The comparison showed that the difference between two data is less 0. 5cm in chinese main land area, and the same time we found that modis atmospheric precipitable water vapor is greater than the ncep data in the area of northwest and north of china and less it in the area of southeast of china. if we multiply modis atmospheric precipitable water vapor data with 0. 933983 and 1. 07686 respectively on above area the difference will below to 0. 2cm

    結果發現：在中國大陸地區， modis與ncep的大氣可降水量之差在絕大部分地區在0 . 5cm以內，但是在中國西北、華北地區普遍偏大一些，在東南地區則普遍偏小一些，如果給上述地區的modis大氣可降水量分別乘以0 . 933983和1 . 07686進行修正，則兩者之差在0 . 2cm以內。
  19. Under the cloudless conditions, the precipitable water was calculated by satellite data and ground humidity parameter respectively, and it was also calculated by the combinable satellite data and ground humidity parameter data. research results were showed as follows : the distribution of the precipitable water retrieved from satellite data was of well spatial and temporal resolutions. the configuration of vapor field was quietly fine, whose distribution of " hot centers " and " wet centers " was obvious

    對于晴空大氣的可降水量，分別用衛星資料和地面濕度參量資料以及將兩種資料結合起來進行了估算，其結果如下：用衛星資料（紅外分裂窗數據）反演晴空大氣可降水量，其反演的水汽場分佈時間和空間的解析度都很高，且其結構精細， 「干中心」和「濕中心」分佈明顯。
  20. The main results are as follows : ( 1 ) the evolutionary features of precipitable water in the whole troposphere in northwest china are different between over the east region and over the west region during the past 50 years from 1951 - 2000 : in the 1990s " the pv in the east of ncw is evidently decreased, and the scope of the descent is the largest one in the same latitude over the north - hemisphere, on the contrary, which in the west regions showed increasing trend

    最後，分析了近50年來西北地區東部垂直運動強度的年代際變化特徵。主要得出了如下結論： （ 1 ）西北地區東、西部對流層整層大氣可降水量在1951 - 2000年近50年來表現出不同的變化趨勢： 90年代以來，東部明顯減少，而西部有所增加，且東部減少的幅度在北半球同緯度地區最大。
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