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GNSS-Retrieved PWV in the Greenland Region
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Shengkai ZHANG1, 2, Jie MA1, 2, 3, Li GONG1, 2, Jintao LEI4, Wenhao LI5, Feng XIAO1, 2, *
Journal of Geodesy and Geodynamics | 2025, 45(8) : 771 - 780
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Journal of Geodesy and Geodynamics | 2025, 45(8): 771-780
GNSS-Retrieved PWV in the Greenland Region
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Shengkai ZHANG1, 2, Jie MA1, 2, 3, Li GONG1, 2, Jintao LEI4, Wenhao LI5, Feng XIAO1, 2, *
Affiliations
  • 1 Chinese Antarctic Center of Surveying and Mapping, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
  • 2 Key Laboratory of Polar Environment Monitoring and Public Governance, Ministry of Education, Whuhan University, 129 Luoyu Road, Wuhan 430079, China
  • 3 School of Geodesy and Geomatics, Wuhan Universuty, 129 Luoyu Road, Wuhan 430079, China
  • 4 School of Civil Engineering and Architecture, Guangxi University, 100 East-Daxue Road, Nanning 530004, China
  • 5 School of Geomatics Science and Technology, Nanjing Tech University, 30 South-Puzhu Road, Nanjing 211816, China

    • ZHANG Shengkai, professor, PhD supervisor, majors in polar geodesy and geophysics, E-mail:

About Author:

ZHANG Shengkai, professor, PhD supervisor, majors in polar geodesy and geophysics, E-mail:

Published: 2025-08-15 doi: 10.14075/j.jgg.2024.12.552
Outline
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Based on hourly-resolution zenith tropospheric delay(ZTD) data from 35 GNSS stations in the Greenland region spanning the period from 2010 to 2021, combined with ERA5 reanalysis datasets and Tm model, precipitable water vapor(PWV) over the region was retrieved. Subsequently, the principal seasonal and diurnal variation characteristics, including annual, semi-annual, diurnal, and semi-diurnal cycles, were investigated. The results indicate that the GNSS stations in Greenland exhibit a certain degree of autocorrelation, with the summer season showing weaker autocorrelation compared to other seasons. The amplitude of the annual component ranges from 2 to 7 mm, while that of the semi-annual component ranges from 0 to 3 mm, with relatively minor interannual variations in their phases. The maximum values occur in summer, and the minimum values in winter. The diurnal component is only pronounced at a few stations, with amplitudes around 0.08 mm. After removing the annual, semi-annual, and diurnal components from the time series to obtain the residual time series, the maximum RMSE ranges from 1.30 to 3.65 mm, with an average RMSE of 2.08 mm. Notably, the RMSE values are relatively higher in the northern region and lower in the southern region.

Greenland  /  precipitable water vapor  /  interpolation  /  GNSS  /  Tm  /  zenith tropospheric delay
张胜凯, 马杰, 龚力, 雷锦韬, 李文浩, 肖峰. 格陵兰地区GNSS反演PWV分析. 大地测量与地球动力学, 2025 , 45 (8) : 771 -780 . DOI: 10.14075/j.jgg.2024.12.552
Shengkai ZHANG, Jie MA, Li GONG, Jintao LEI, Wenhao LI, Feng XIAO. GNSS-Retrieved PWV in the Greenland Region[J]. Journal of Geodesy and Geodynamics, 2025 , 45 (8) : 771 -780 . DOI: 10.14075/j.jgg.2024.12.552
Funding
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  • National Key Research and Development Program of China(2023YFC2809103)
  • National Key Research and Development Program of China(2024YFC2813505)
  • Fundamental Research Funds for the Central Universities(042023gf0012)
  • Fundamental Research Funds for the Central Universities(2042022dx0001)
Appendix
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Year 2025 volume 45 Issue 8
37
14
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Article Info
doi: 10.14075/j.jgg.2024.12.552
  • Receive Date：2024-12-04
  • Online Date：2026-10-29
  • Published：2025-08-15
Article Data
Affiliations
History
  • Received：2024-12-04
Funding
National Key Research and Development Program of China(2023YFC2809103)
National Key Research and Development Program of China(2024YFC2813505)
Fundamental Research Funds for the Central Universities(042023gf0012)
Fundamental Research Funds for the Central Universities(2042022dx0001)
Affiliations
    1 Chinese Antarctic Center of Surveying and Mapping, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
    2 Key Laboratory of Polar Environment Monitoring and Public Governance, Ministry of Education, Whuhan University, 129 Luoyu Road, Wuhan 430079, China
    3 School of Geodesy and Geomatics, Wuhan Universuty, 129 Luoyu Road, Wuhan 430079, China
    4 School of Civil Engineering and Architecture, Guangxi University, 100 East-Daxue Road, Nanning 530004, China
    5 School of Geomatics Science and Technology, Nanjing Tech University, 30 South-Puzhu Road, Nanjing 211816, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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