Articles | Volume 14, issue 7
Atmos. Meas. Tech., 14, 5127–5138, 2021
Atmos. Meas. Tech., 14, 5127–5138, 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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Cited articles

Alfred Wegener Institute: Polar Research and Supply Vessel POLARSTERN Operated by the Alfred-Wegener-Institute, JLSRF, 3, A119,, 2017. a
Alshawaf, F., Zus, F., Balidakis, K., Deng, Z., Hoseini, M., Dick, G., and Wickert, J.: On the Statistical Significance of Climatic Trends Estimated From GPS Tropospheric Time Series, J. Geophys. Res., 123, 10967–10990,, 2018. a
Balidakis, K., Nilsson, T., Zus, F., Glaser, S., Heinkelmann, R., Deng, Z., and Schuh, H.: Estimating Integrated Water Vapor Trends From VLBI, GPS, and Numerical Weather Models: Sensitivity to Tropospheric Parameterization, J. Geophys. Res.-Atmos., 123, 6356–6372,, 2018. a
Bevis, M., Businger, S., Chiswell, S., Herring, T. A., Anthes, R. A., Rocken, C., and Ware, R. H.: GPS Meteorology: Mapping Zenith Wet Delays onto Precipitable Water, J. Appl. Meteorol. Climatol., 33, 379–386,<0379:GMMZWD>2.0.CO;2​​​​​​​, 1994. a
Böhm, J., Werl, B., and Schuh, H.: Troposphere mapping functions for GPS and VLBI from European Centre for medium-range weather forecasts operational analysis data, J. Geophys. Res., 111, B02406,, 2006. a
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).