Articles | Volume 14, issue 7
Atmos. Meas. Tech., 14, 5127–5138, 2021
https://doi.org/10.5194/amt-14-5127-2021
Atmos. Meas. Tech., 14, 5127–5138, 2021
https://doi.org/10.5194/amt-14-5127-2021

Research article 28 Jul 2021

Research article | 28 Jul 2021

GNSS-based water vapor estimation and validation during the MOSAiC expedition

Benjamin Männel et al.

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Short summary
Within the MOSAiC expedition, GNSS was used to monitor variations in atmospheric water vapor. Based on 15 months of continuously tracked data, coordinates and hourly zenith total delays (ZTDs) were determined using kinematic precise point positioning. The derived ZTD values agree within few millimeters with ERA5 and terrestrial GNSS and VLBI stations. The derived integrated water vapor corresponds to the frequently launched radiosondes (0.08 ± 0.04 kg m−2, rms of the differences of 1.47 kg m−2).