Articles | Volume 23, issue 3
https://doi.org/10.5194/npg-23-127-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/npg-23-127-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
27 May 2016
Research article |
| 27 May 2016
An improved global zenith tropospheric delay model GZTD2 considering diurnal variations
Yibin Yao
CORRESPONDING AUTHOR
School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
Collaborative Innovation Center for Geospatial Technology, 129 Luoyu Road, Wuhan 430079, China
Yufeng Hu
School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
Chen Yu
School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
Bao Zhang
School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
Jianjian Guo
School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
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- Real-time high-resolution tropospheric delay mapping based on GFS forecasts and GNSS C. Lu et al. 10.1007/s10291-024-01722-7
48 citations as recorded by crossref.
- Global tropospheric delay grid modeling based on Anti-Leakage Least-Squares Spectral Analysis and its validation Y. Ma et al. 10.1016/j.jastp.2022.105829
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- Development and evaluation of the refined zenith tropospheric delay (ZTD) models F. Yang et al. 10.1186/s43020-021-00052-0
- Refining the ERA5-based global model for vertical adjustment of zenith tropospheric delay G. Zhu et al. 10.1186/s43020-022-00088-w
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- Real-time high-precision landslide displacement monitoring based on a GNSS CORS network B. Shu et al. 10.1016/j.measurement.2023.113056
- A New Global ZTD Forecast Model Based on Improved LSTM Neural Network L. He et al. 10.1109/JSTARS.2024.3391821
- A Regional Zenith Tropospheric Delay (ZTD) Model Based on GPT3 and ANN F. Yang et al. 10.3390/rs13050838
- Real-time retrieval of high-precision ZTD maps using GNSS observation Q. Zhao et al. 10.1016/j.geog.2023.12.002
- High-Precision GNSS PWV and Its Variation Characteristics in China Based on Individual Station Meteorological Data M. Wu et al. 10.3390/rs13071296
- Improved GPT2w (IGPT2w) model for site specific zenith tropospheric delay estimation in China Z. Du et al. 10.1016/j.jastp.2020.105202
- Development of a ZTD Vertical Profile Model Considering the Spatiotemporal Variation of Height Scale Factor with Different Reanalysis Products in China X. Wang et al. 10.3390/atmos13091469
- Comparative analysis of blind tropospheric correction models in Ghana S. Osah et al. 10.1515/jogs-2020-0104
- A New Grid Zenith Tropospheric Delay Model Considering Time-Varying Vertical Adjustment and Diurnal Variation over China J. Zhang et al. 10.3390/rs16112023
- Estimation of the water vapor field by fusing GPS and surface meteorological observations on the Loess Plateau of China L. Yang et al. 10.1007/s10291-023-01599-y
- Modeling wide-area tropospheric delay corrections for fast PPP ambiguity resolution B. Cui et al. 10.1007/s10291-022-01243-1
- Performance of spatial interpolation methods in predicting GNSS zenith total delay A. Akar & C. Inal 10.1016/j.measurement.2024.114189
- SHAtropE—A Regional Gridded ZTD Model for China and the Surrounding Areas J. Chen et al. 10.3390/rs12010165
- Improved Zenith Tropospheric Delay Modeling Using the Piecewise Model of Atmospheric Refractivity L. Yang et al. 10.3390/rs12233876
- A global zenith tropospheric delay model with ERA5 and GNSS-based ZTD difference correction H. Li et al. 10.1007/s10291-023-01503-8
- Unraveling the Accuracy Enigma: Investigating ZTD Data Precision in TUW-VMF3 and GFZ-VMF3 Products Using a Comprehensive Global GPS Dataset J. Li et al. 10.1109/TGRS.2024.3385228
- Assessment of ZWD field predictions using the dynamic mode decomposition method M. Dehvari et al. 10.1007/s10291-024-01692-w
- A new simplified zenith tropospheric delay model for real-time GNSS applications J. Mao et al. 10.1007/s10291-021-01092-4
- An ERA5‐Based Model for Estimating Tropospheric Delay and Weighted Mean Temperature Over China With Improved Spatiotemporal Resolutions Z. Sun et al. 10.1029/2019EA000701
- AFRC-Trop: New Real-Time Zenith Tropospheric Delay Model over Africa M. Abdelazeem 10.1061/(ASCE)SU.1943-5428.0000348
- Analysis of GNSS-ZTD retrieval using dual-frequency raw observations Y. Fan et al. 10.1016/j.measurement.2024.114597
- An improved global grid model for calibrating zenith tropospheric delay for GNSS applications L. Huang et al. 10.1007/s10291-022-01354-9
- Global Assessment of the GNSS Single Point Positioning Biases Produced by the Residual Tropospheric Delay L. Yang et al. 10.3390/rs13061202
- A new method for vertical stratification of zenith tropospheric delay Y. Hu & Y. Yao 10.1016/j.asr.2018.10.035
- A global grid model for the correction of the vertical zenith total delay based on a sliding window algorithm L. Huang et al. 10.1007/s10291-021-01138-7
- Modeling and Forecasting the GPS Zenith Troposphere Delay in West Antarctica Based on Different Blind Source Separation Methods and Deep Learning Q. Zhang et al. 10.3390/s20082343
- Estimation and Evaluation of Zenith Tropospheric Delay from Single and Multiple GNSS Observations S. Xia et al. 10.3390/rs15235457
- Evaluation of modified Saastamoinen ZTD model using ground-based GPS observation over Iran A. Sam-Khaniani & R. Naeijian 10.1007/s12145-023-01033-4
- Establishing a high-precision real-time ZTD model of China with GPS and ERA5 historical data and its application in PPP P. Xia et al. 10.1007/s10291-022-01338-9
- An analysis of GPT2/GPT2w+Saastamoinen models for estimating zenith tropospheric delay over Asian area J. Liu et al. 10.1016/j.asr.2016.09.019
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- Evaluation of Spatio‐Temporal Characteristics of Different Zenith Tropospheric Delay Models in Antarctica F. Li et al. 10.1029/2019RS006909
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- Assessment of the three representative empirical models for zenith tropospheric delay (ZTD) using the CMONOC data D. Yuan et al. 10.1016/j.geog.2024.01.006
- Refining empirical tropospheric model with meteorological stations for large height difference RTK positioning L. Zhang et al. 10.1007/s10291-023-01481-x
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- Forecasting GNSS Zenith Troposphere Delay by Improving GPT3 Model with Machine Learning in Antarctica S. Li et al. 10.3390/atmos13010078
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- Developing Iran's empirical zenith wet delay model (IR-ZWD) M. Dehvari et al. 10.1016/j.jastp.2023.106163
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- A New Global Tropospheric Delay Model Considering the Spatiotemporal Variation Characteristics of ZTD With Altitude Coefficient P. Chen et al. 10.1029/2019EA000888
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Latest update: 21 Nov 2024
Short summary
By considering the diurnal variations in zenith tropospheric delay (ZTD) and modifying the model expansion function, we developed an improved global empirical ZTD model GZTD2 with higher temporal and spatial resolutions compared to our previous GZTD model. The external validation testing with IGS ZTD data shows the bias and rms for GZTD2 are −0.3 and 3.9 cm respectively, indicating higher accuracy and reliability for geodesy technology compared to GZTD and other commonly used ZTD models.
By considering the diurnal variations in zenith tropospheric delay (ZTD) and modifying the model...
