zenith angle 中文意思是什麼

zenith angle 解釋
天頂角
  • zenith : n. 1. 【天文學】天頂 （opp. nadir）。2. 頂點，極點，絕頂，全盛。
  • angle : n 【英史】盎格魯人〈cf Angles〉。n 1 角，隅，角落；棱，嬗角。2 【數學】角，角位，角的度數。3 【機...
  1. ( 3 ) the optimized strategy analysis on retrieval of gps water vapor the optimized strategy analysis on retrieval of gps water vapor has been carried out under different data processing schemes by using gps observation. the parameters selection problem has been resolved in gps water vapor retrieval process such as the optimum number of adopted igs stations, the relation between single station processing and united station processing, network layout, cut - off angle, zenith delay parameter, period, knot position and so on

    （ 3 ） gps水汽反演優化策略分析利用gps觀測數據，使用多種數據處理方案，進行gps水汽反演優化策略分析，初步解決了進行gps水汽反演中引入igs站的最佳個數、單站解算和聯合解算的關系、網路布局、截止高度角、天頂延遲參數、時段長度、節點位置等選擇問題。
  2. Zenith - angle distribution

    天頂角分佈
  3. A two stream model has been used to calculate the variation of optical depth and their effects to ultraviolet radiation of each extinction material. with the model, the relation among season, solar zenith angle and ultraviolet radiation has been discussed, and the variation of ultraviolet radiation under different clouds has also been studied. the comparative research of ultraviolet radiation among kunming, beijing and other abroad area at the same latitude has also been done

    在已建立的計算昆明紫外輻射兩流模式改進的基礎上，進一步計算並討論了： 1各種消光物質的光學厚度變化規律及其對紫外輻射的影響2季節變化及太陽天頂角變化與紫外輻射的關系3不同雲的光學厚度下紫外輻射的變化4昆明與北京兩地模式計算結果比較，以及與國外相近緯度觀測結果進行了比較。
  4. Single - layer model is convenient to apply but the unclear relationship between radiative and aerodynamic temperatures is still a bottleneck in this field. a new method was developed to derive reliable surface heat fluxes from radiative temperature viewed from arbitrary zenith angle. aerodynamic and radiative temperatures are connected through a so - called optimum component fraction ( ocf ) parameter - the fraction of vegetation in the field of view when the two temperatures are equivalent in oblique viewing

    該方法利用表面熱輻射方向性和顯熱通量都是源於土壤和植被溫度的貢獻這一共同點，發現在一定傾斜角度的觀測下，視場中植被與土壤的比例可以較好地反映植被和土壤與大氣進行湍流熱交換的貢獻率，所以稱該方法為最佳組分面積比法，用最佳組分面積比可以將任意角度下觀測到的輻射溫度訂正為空氣動力學溫度，經過地面和遙感數據驗證表明，用該方法計算的通量精度高於普通的單層模型。
  5. In this paper, the solar and land - atmosphere radiation rates are calculated by modtran3 model and satellite observation as well as surface data, solar direct irradiance infrared irradiance solar heating rate and infrared cooling rate were calculated from 43 samples of sunshine day and 5 samples of cloudy day 3 samples of rainy day of different latitudes in 12 stations. the paper analyzed solar heating rate and infrared cooling rate in sunshine day, the factors such as zenith angle, water vapor and latitude were found out correlating with solar heating rate and infrared cooling rate. solar heating rate and infrared cooling rate change on the same day and at the same station

    在對晴空大氣的計算中，本文對太陽的直接輻射與地氣系統的紅外輻射狀況進行了分析，並討論在不同的大氣狀況下太陽加熱率和紅外冷卻率的情況，找出與太陽加熱率和紅外冷卻率變化相關較大的因子?太陽天頂角和水汽條件、緯度；本文還進一步分析了不同緯度樣本的太陽加熱率與紅外冷卻率日變化及有雲、有雨情況下太陽加熱率和紅外冷卻率的變化情況：另外，文中通過改變二氧化碳在大氣中含量的方法，討論了它對太陽加熱率與紅外冷卻率的影響。
  6. By measuring the brdf of a kind of typical material - granite, sample ' s hemisphere reflectivity has been acquired and the law of its dependence on the zenith - angle and azimuth - angle variation has been studied

    摘要對以大理石為代表的材料進行了雙向反射分佈函數測量實驗，得出了樣品的半球反射率，並研究了其隨入射、反射天頂角等參數變化的規律。
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