Articles | Volume 14, issue 8
Atmos. Meas. Tech., 14, 5593–5605, 2021
https://doi.org/10.5194/amt-14-5593-2021
Atmos. Meas. Tech., 14, 5593–5605, 2021
https://doi.org/10.5194/amt-14-5593-2021

Research article 17 Aug 2021

Research article | 17 Aug 2021

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

Tong Ning and Gunnar Elgered

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Short summary
We have estimated horizontal gradients of the propagation delay caused by water vapour in the atmosphere using two independent techniques, namely global navigation satellite systems (GNSS) and microwave radiometry. The highest resolution was 5 min. We found that the sampling of the atmosphere in different directions is an important factor for high correlations between the two techniques and that GNSS data can be used to detect large short-lived gradients, however, with increased formal errors.