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

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

doi:10.5194/amt-9-79-2016

Articles | Volume 9, issue 1

https://doi.org/10.5194/amt-9-79-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Advanced Global Navigation Satellite Systems tropospheric...

https://doi.org/10.5194/amt-9-79-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 9, issue 1

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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Jan 2025	26	14	4	44
Feb 2025	36	11	0	47
Mar 2025	29	5	2	36
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May 2025	30	12	2	44
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Aug 2025	72	20	3	95
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Cumulative views and downloads (calculated since 27 Aug 2015)

Month	HTML	PDF	XML	Total
Aug 2015	46	30	1	77
Sep 2015	41	41	3	85
Oct 2015	26	20	2	48
Nov 2015	11	9	0	20
Dec 2015	15	18	0	33
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Feb 2016	63	36	0	99
Mar 2016	37	18	1	56
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May 2016	21	19	1	41
Jun 2016	15	5	2	22
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Oct 2023	62	13	3	78
Nov 2023	36	15	0	51
Dec 2023	76	16	2	94
Jan 2024	54	12	1	67
Feb 2024	43	17	3	63
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Jan 2025	26	14	4	44
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Apr 2025	27	26	0	53
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Jun 2025	53	15	1	69
Jul 2025	37	19	4	60
Aug 2025	72	20	3	95
Sep 2025	54	19	0	73
Oct 2025	26	34	3	63
Nov 2025	26	8	1	35

Latest update: 20 Nov 2025

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.