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估计降水
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  rainfall estimate
     Study of Rainfall Estimate Technique with GMS-5 Data
     应用GMS5多通道云图估计降水技术的研究
短句来源
     THE STUDY AND APPLICATION OF RAINFALL ESTIMATE SYSTEM USING GMS-5 DATA IN EAST CHINA
     中国东部地区卫星估计降水系统及其应用
短句来源
  “估计降水”译为未确定词的双语例句
     The results reveal that their errors is31.8% and 41.0% for daily area rainfall estimation, and their correlation coefficients are 0.97 and 0.94.
     在日面降水估计试验中,地面雨量计值和卫星估计降水之间的相关系数分别为0.94和0.97,相对误差分别为41%和32%。
短句来源
     Review on the Techniques for Estimation of Precipitation with Satellite Data
     用卫星资料估计降水方法的评述
短句来源
     AN INVESTIGATION ON VERTICAL PROFILES OF RADAR REFLECTIVITY AND PRECIPITATION ESTIMATION WITH REMOTELY SENSED DATA
     雷达反射率因子垂直廓线研究和多种遥感资料综合估计降水
短句来源
     The widely used techniques for estimation of precipitation with satellite data are comprehensively presented. Some data in the published papers are used to analyse and compare these techniques.
     该文较全面地介绍了目前国际上应用气象卫星资料估计降水的方法,并引证了部分资料对已有的降水估计方法进行了分析和比较。 提出了目前降水估计方法的攻关难点。
短句来源
     The problems in solving precipitation estimation are discussion.
     这对于目前我国刚刚起步的卫星估计降水研究将有一定的参考价值。
短句来源
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  相似匹配句对
     b) a G-M estimator of ω'1α, ω'2β and ω'1α+ω'2β under L (Xβ, Aα; δ21V, δ22U} respectively.
     b)G-M估计
短句来源
     Precipitation Estimation from Remotely Sensed Information Using Nueral Networks
     卫星面降水估计人工神经网络方法
短句来源
     THE CHARACTERISTICS OF RAINFALL AND ITS TENDENCY ESTIMATE OVER NORTH CHINA
     华北地区的降水特征及趋势估计
短句来源
     A newmethod for the estimation of exponent regularity of the kind wavelet and related scalefunction is proposed.
     Daubechies的估计
短句来源
     Acid Deposition
     酸性降水
短句来源
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  rainfall estimate
But an overall high bias of 5 mm h-1 of the SFMR rainfall estimate relative to radar is also found.
      
If the resulting rainfall estimate is less than zero then it is set to zero.
      
This tool merges stations and a rainfall estimate grid in two consecutive passes.
      
The SPOL radar rainfall estimate was biased low in the range of 4.8% 11.1%.
      


The widely used techniques for estimation of precipitation with satellite data are comprehensively presented. Some data in the published papers are used to analyse and compare these techniques. The problems in solving precipitation estimation are discussion.

该文较全面地介绍了目前国际上应用气象卫星资料估计降水的方法,并引证了部分资料对已有的降水估计方法进行了分析和比较。提出了目前降水估计方法的攻关难点。这对于目前我国刚刚起步的卫星估计降水研究将有一定的参考价值。

The feasibility of quantitatively measuring rain rate by satellite altimeters is investi-gated by examining the effects of the preciptiation of altimetry signals. One effect of theprecipitation is that a rain layer and additional water vapor within can cause some altimeterrange lengthening, But it is very difficult to derive rain rate from the range lengthening dueto the rain layer because of its smallness in comparison with other range errors and itscomplicated relationship with rain rate. A rain layer will...

The feasibility of quantitatively measuring rain rate by satellite altimeters is investi-gated by examining the effects of the preciptiation of altimetry signals. One effect of theprecipitation is that a rain layer and additional water vapor within can cause some altimeterrange lengthening, But it is very difficult to derive rain rate from the range lengthening dueto the rain layer because of its smallness in comparison with other range errors and itscomplicated relationship with rain rate. A rain layer will attenuate the signal returned fromthe surface. This effect can be used to determine the vertically-integrated precipitation.The method commonly used by radar meteorologists is based on the effect of signalbackscattering by precipitation particles,which can measure the vertical profiles of precipi-tation. In this work a new method is proposed to estimate rain rate from the relative returnpower shapes. This method possesses two main advantages:(1)no need of altimeter abso-lute calibration and(2)no ambiguity of precipitation estimates.

研讨了用微波雷达高度计定量测量降水的几种可能途径,提出一种根据回波波形(即回波随时间变化)估计降水的新方法。此方法有两大优点:(1)高度计无需作绝对校准;(2)估计降水不出现模糊(即多值)现象。

The relationship of the rainfall rate averaged over a sampling area, which is sufficiently large and conditionally homogeneous of climate, with the cloud coverage, standard deviation of the brightness temperatures at cloud top,and temporal variability of the cloud coverage, has been studied, and three statistical models are obtained for estimating rain amount with digitized, 1 h interval infrared images from geostationary satellite. The results ...

The relationship of the rainfall rate averaged over a sampling area, which is sufficiently large and conditionally homogeneous of climate, with the cloud coverage, standard deviation of the brightness temperatures at cloud top,and temporal variability of the cloud coverage, has been studied, and three statistical models are obtained for estimating rain amount with digitized, 1 h interval infrared images from geostationary satellite. The results from the precipitating weather on the 5th, 6th and 10th of July in 1991 show that the models are quite good at the estimation of daily precipitation. Because cloud isolation and tracking to examine the life stage are not necessary, the models are easy for applications and can be used in other areas as well provided the sampling time and meteorological conditions are similar.

在条件气候均匀及范围足够大取样区域,研讨面平均雨强与云覆盖率、云顶表面亮度温度的标准偏差、云覆盖率随时间的变化率三者之间的关系,得到用1h间隔的数字化红外卫星资料估计降水的三种模式。通过对1991年7月5日、6日、10日降水过程的实例分析表明,对于日降水量的估计,效果较为理想。模式可用于与取样时间和地点的相似气象条件区,且不需要对云进行分离和跟踪、考察对流单体的生命史演变过程,便于应用。

 
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