Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/7263
Title: 可降水份的误差分析
Other Titles: The effect of approximation error and observation error on precipitable water vapor
Authors: Liu, Y
Chen, YQ 
Iz, HB 
Keywords: Precipitable water vapor (PWV)
Radiosonde data
Approximation error
Observation error
Issue Date: 2000
Publisher: 武汉大学期刋社
Source: 武汉测绘科技大学学报, Apr. 2000, v. 25, no. 2, p. 105-107, 112
Journal of Wuhan Technical University of Surveying and Mapping (WTUSM), Apr. 2000, v. 25, no. 2, p. 105-107, 112 How to cite?
Journal: Journal of Wuhan Technical University of Surveying and Mapping(WTUSM) 
Abstract: 分析了由无线电探空数据计算可降水份中逼近误差和观测误差的影响 ,利用香港的无线电探空资料计算出逼近误差和观测误差的影响分别为 0 .5mm和 1 .2mm ,两者的综合影响为 1 .3mm。
The determination of precipitable water vapor (PWV) is one of the basic objectives of GPS meteorology. PWV calculated from radiosonde data is usually used as a reference to assess GPS derived PWV .The radiosonde_based PWV is derived by integrating the water vapor density along a balloon’s uprising path which is a function of the observed temperature,relative humidity at different heights.Hence,the meteorological observations errors propagate to the calculated PWV .Moreover,these meteorological observations are discrete,and a numerical integration scheme is employed to calculate the PWV .Therefore,the density of observations also influences the accuracy of the PWV (approximation error).In this study,we analyze these two error sources in the determination of PWV using 50_day Hong Kong radiosonde data.We estimate an approximation error of 0.5 mm and observation error of 1.2 mm in calculating PWV .The total impact of the both error sources is about 1.3mm.
URI: http://hdl.handle.net/10397/7263
ISSN: 1671-8860
Rights: © 2000 中国学术期刊电子杂志出版社。本内容的使用仅限于教育、科研之目的。
© 2000 China Academic Journal Electronic Publishing House. It is to be used strictly for educational and research use.
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