A new vertical reduction model for enhancing the interpolation accuracy of VMF1/VMF3 tropospheric delay products

Sun, Peng; Zhang, Kefei; Zhu, Dantong; Shi, Shuangshuang; Liu, Xuexi; Zhao, Dongsheng; Zhang, Minghao; Wu, Suqin

doi:https://doi.org/10.5194/gmd-18-6167-2025

Articles | Volume 18, issue 18

https://doi.org/10.5194/gmd-18-6167-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-18-6167-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 18

Development and technical paper

|

19 Sep 2025

Development and technical paper |

| 19 Sep 2025

A new vertical reduction model for enhancing the interpolation accuracy of VMF1/VMF3 tropospheric delay products

Peng Sun, Kefei Zhang, Dantong Zhu, Shuangshuang Shi, Xuexi Liu, Dongsheng Zhao, Minghao Zhang, and Suqin Wu

Data sets

VMF Data Server Re3data.Org https://doi.org/10.17616/R3RD2H

ERA5 monthly averaged data on pressure levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.6860a573

Integrated global radiosonde archive (IGRA), version 2.2 I. Durre et al. https://doi.org/10.7289/V5X63K0Q

GNSS final troposphere zenith path delay combination product International GNSS Service https://doi.org/10.5067/GNSS/GNSS_IGSTROPZPD_001

Model code and software

PengSun1991/VMF_ZTDLpsR P. Sun https://doi.org/10.5281/zenodo.12508317

Short summary

A new method has been developed to more accurately adjust atmospheric delay data for use in satellite positioning, especially in areas with large height differences. By using long-term weather data and testing with global observation stations, the new method significantly improves accuracy compared to traditional approaches. This can benefit applications such as precise positioning and weather monitoring using navigation satellite signals.