Articles | Volume 9, issue 1
https://doi.org/10.5194/amt-9-79-2016
https://doi.org/10.5194/amt-9-79-2016
Research article
 | 
18 Jan 2016
Research article |  | 18 Jan 2016

The uncertainty of the atmospheric integrated water vapour estimated from GNSS observations

T. Ning, J. Wang, G. Elgered, G. Dick, J. Wickert, M. Bradke, M. Sommer, R. Querel, and D. Smale

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Short summary
Integrated water vapour (IWV) obtained from GNSS is to be developed into a GRUAN data product. In addition to the actual measurement, this data product needs to provide an estimate of the measurement uncertainty at the same time resolution as the actual measurement. The method developed in the paper fulfils the requirement by assigning a specific uncertainty to each data point. The method is also valuable for all applications of GNSS IWV data in atmospheric research and weather forecast.