Assessment of ZTD derived from ECMWF/NCEP data with GPS ZTD over China
文献类型：期刊论文
| 作者 | Chen, Qinming1,2,3 ; Song, Shuli1; Heise, Stefan4; Liou, Yuei-An5; Zhu, Wenyao1; Zhao, Jingyang1,2
|
| 刊名 | GPS SOLUTIONS
 |
| 出版日期 | 2011-10-01 |
| 卷号 | 15期号:4页码:415-425 |
| 关键词 | GPS Zenith tropospheric delay (ZTD) CMONOC ECMWF NCEP |
| 英文摘要 | The accuracy and feasibility of computing the zenith tropospheric delays (ZTDs) from data of the European Center for Medium-Range Weather Forecasts (ECMWF) and the United States National Centers for Environmental Prediction (NCEP) are studied. The ZTDs are calculated from ECMWF/NCEP pressure-level data by integration and from the surface data with the Saastamoinen model method and then compared with the solutions measured from 28 global positioning system (GPS) stations of the Crustal Movement Observation Network of China (CMONOC) for 1 year. The results are as follows: (1) the error of the integration method is 1-3 cm less than that of the Saastamoinen model method. The agreement between the ECMWF ZTD and GPS ZTD is better than that between NCEP ZTD and GPS ZTD; (2) the bias and root mean square difference (RMSD), especially the latter, have a seasonal variation, and the RMSD decreases with increasing altitude while the variation with latitude is not obvious; and (3) when using the full horizontal resolution of 0.5A degrees A xA 0.5A degrees of the ECMWF meteorological data in place of a reduced 2.5A degrees A xA 2.5A degrees grid, the mean RMSD between GPS and ECMWF ZTD decreases by 4.5 mm. These results illuminated the accuracy and feasibility of computing the tropospheric delays and establishing the ZTD prediction model over China for navigation and positioning with ECMWF and NCEP data. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Remote Sensing |
| 研究领域[WOS] | Remote Sensing |
| 关键词[WOS] | DELAYS ; MODELS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000295165500010 |
| 源URL | [http://119.78.226.72/handle/331011/26399]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China 3.SW Univ Sci & Technol, Mianyang, Sichuan, Peoples R China 4.GFZ German Res Ctr Geosci, Helmholtz Ctr Potsdam, Potsdam, Germany 5.Natl Cent Univ, Ctr Space & Remote Sensing Res, Jhongli, Taiwan |
| 推荐引用方式 GB/T 7714 | Chen, Qinming,Song, Shuli,Heise, Stefan,et al. Assessment of ZTD derived from ECMWF/NCEP data with GPS ZTD over China[J]. GPS SOLUTIONS,2011,15(4):415-425. |
| APA | Chen, Qinming,Song, Shuli,Heise, Stefan,Liou, Yuei-An,Zhu, Wenyao,&Zhao, Jingyang.(2011).Assessment of ZTD derived from ECMWF/NCEP data with GPS ZTD over China.GPS SOLUTIONS,15(4),415-425. |
| MLA | Chen, Qinming,et al."Assessment of ZTD derived from ECMWF/NCEP data with GPS ZTD over China".GPS SOLUTIONS 15.4(2011):415-425. |
入库方式： OAI收割
来源：上海天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。