Articles | Volume 10, issue 8
Atmos. Meas. Tech., 10, 2807–2820, 2017
https://doi.org/10.5194/amt-10-2807-2017

Special issue: Advanced Global Navigation Satellite Systems tropospheric...

Atmos. Meas. Tech., 10, 2807–2820, 2017
https://doi.org/10.5194/amt-10-2807-2017

Research article 07 Aug 2017

Research article | 07 Aug 2017

Determination of zenith hydrostatic delay and its impact on GNSS-derived integrated water vapor

Xiaoming Wang et al.

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Latest update: 26 Feb 2021
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Short summary
Accurate knowledge of water vapor (WV) is vital for global climate studies. The Global Navigation Satellite System (GNSS) has been used as an emerging tool for sensing integrated WV (IWV). In the determination of PWV, surface pressure is required. However, few GNSS stations were installed with meteorological sensors back in the 1990s. Our research indicates that the ERA-Interim-derived pressure has the potential to be used to obtain high-accuracy IWV on a global scale for climate studies.