Research on retrieval of PWV based on PPP and NCEP/NCAR global reanalysis 1 data

doi:10.1007/978-981-10-4588-2_25

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海岛海岸带研究中心

	Research on retrieval of PWV based on PPP and NCEP/NCAR global reanalysis 1 data
	Wu, Zhilu 1,2; Liu, Yanxiong 2; He, Xiufeng 1; Guo, Kai 1,2; He, Lina 1; Li, Menghao 2
	2017
会议日期	5 23, 2017 - 5 25, 2017
会议地点	Shanghai, China
卷号	437
期号	437
DOI	10.1007/978-981-10-4588-2_25
页码	285-295
英文摘要	Aimed at lack of temperature and pressure data in retrieving Precipitable Water Vapor (PWV) from Precise Point Positioning (PPP), a Layer Interpolation Method (LIM) used the NCEP/NCAR layer reanalysis data is proposed. 14 IGS stations located at different altitudes are selected to validate the method with its meteorology files. The interpolated temperature and pressure values from the LIM and those from the classical Surface Interpolation Method (SIM) have been compared with the observed data, further for evaluating effect on the derived PWV. The experimental results show that (1) two interpolation methods perform well in pressure at the GPS sites below 2000 m with RMS 1.79 mbar (LIM) and 3.83 mbar (SIM), LIM is better than SIM. While the interpolated temperature values nearly have the same accuracy with RMS 3.63 K (LIM) and 3.69 K (SIM). (2) The LIM and the SIM exist the large pressure errors for the GPS site above 3000 m as LHAZ. The interpolated pressure error reach 8 mbar, which contributes 3 mm PWV error. While the accuracy is still better than the accuracy of PWV without meteorological data, especially for LIM with the improvement from 4.36 to 3.29 mm. (3) The derived PWV accuracy with interpolation data shows obvious positive correlation with the accuracy of the interpolated pressure data, while the accuracy of PWV has no correlation with temperature data, which means the accuracy of retrieving PWV is mainly effected by pressure. (4) The accuracy of the PWV retrieved with the interpolated meteorological data has no obvious coupling relation with altitude and latitude. © Springer Nature Singapore Pte Ltd. 2017.
会议录	Lecture Notes in Electrical Engineering
会议录出版者	Springer Verlag
语种	英语
ISSN号	18761100
内容类型	会议论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/7150]
专题	业务部门_海岛海岸带研究中心
作者单位	1.College of Earth Science and Engineering, Hohai University, Nan Jing, China; 2.First Institute of Oceanography, State Oceanic Administration, Qing Dao, China
推荐引用方式 GB/T 7714	Wu, Zhilu,Liu, Yanxiong,He, Xiufeng,et al. Research on retrieval of PWV based on PPP and NCEP/NCAR global reanalysis 1 data[C]. 见:. Shanghai, China. 5 23, 2017 - 5 25, 2017.