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Application of Raytracing Through the High Resolution Numerical Weather Model HIRLAM for the Analysis of European VLBI.
| 题名： | Application of Raytracing Through the High Resolution Numerical Weather Model HIRLAM for the Analysis of European VLBI. |
| 作者： | Garcia-Espada-S.; Haas-R.; Colomer-F. |
| 关键词： | application；solution；through；vlbi；analysis；erica；prediction；esol；atmosphere；trac |
| 摘要： | An important limitation for the precision in the results obtained by space geodetic techniques like VLBI and GPS are tropospheric delays caused by the neutral atmosphere, see e.g. (1). In recent years numerical weather models (NWM) have been applied to improve mapping functions which are used for tropospheric delay modeling in VLBI and GPS data analyses. In this manuscript we use raytracing to calculate slant delays and apply these to the analysis of Europe VLBI data. The raytracing is performed through the limited area numerical weather prediction (NWP) model HIRLAM. The advantages of this model are high spatial (0.2 deg. x 0.2 deg.) and high temporal resolution (in prediction mode three hours). |
| 报告类型： | 科技报告 |
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