High temporal resolution wet delay gradients estimated from multi-GNSS and microwave radiometer observations

SND-ID: 2021-219

Description Data and documentation

Creator/Principal investigator(s)

Gunnar Elgered - Chalmers University of Technology, Space, Earth and Environmental Science orcid

Tong Ning - The Swedish Mapping, Cadastral and Land Registration Authority

Description

Abstract of the published paper using the dataset:
We have used one year (2019) of multi-GNSS observations at the Onsala Space Observatory on the Swedish west coast to estimate the linear horizontal gradients in the wet propagation delay. The estimated gradients are compared to the corresponding ones from a microwave radiometer. We have investigated different temporal resolutions from 5 min to one day. Relative to the GPS-only solution and using an elevation cutoff angle of 10° and a temporal resolution of 5 min the improvement obtained for the solution using GPS, Glonass, and Galileo data is an increase in the correlation coefficient of 11 % for the east gradient and 20 % for the north gradient. Out of all the different GNSS solutions, the highest correlation is obtained for the east gradients and a resolution of 2 h, while the best agreement for the north gradients is obtained for 6 h. The choice of temporal resolution is a compromise between getting a high correlation and the possibility to detect rapid changes in the gradient. Due to the differences in geometry of the observations, gradie

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Language

English

Research principal, contributors, and funding
Protection and ethical review

Data contains personal data

No

Method

Time period(s) investigated

2019-01-01–2019-12-31

Geographic coverage

Geographic spread

Geographic location: Onsala Parish

Geographic description: The atmosphere above the Onsala Space Observatory

Publications

Ning T. and Elgered, G, (2021). High temporal resolution wet delay gradients estimated from multi-GNSS and microwave radiometer observations, Atmospheric Measurement Techniques.
DOI: https://doi.org/

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Dataset
High temporal resolution wet delay gradients estimated from multi-GNSS and microwave radiometer observations

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Version 1

Citation

Gunnar Elgered, Tong Ning. Chalmers University of Technology, Space, Earth and Environmental Science (2021). <em>High temporal resolution wet delay gradients estimated from multi-GNSS and microwave radiometer observations</em>. Swedish National Data Service. Version 1. <a href="https://doi.org/10.5878/fyt8-bs80">https://doi.org/10.5878/fyt8-bs80</a>

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Data format / data structure

Numeric

Creator/Principal investigator(s)

Gunnar Elgered - Chalmers University of Technology, Space, Earth and Environmental Science orcid

Tong Ning - The Swedish Mapping, Cadastral and Land Registration Authority

Time period(s) investigated

2019-01-01–2019-12-31

Data collection

  • Instrument: Global Navigational Satellite Systems
  • Temporal resolution: 5 minute

License

Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Published: 2021-07-21