Articles | Volume 15, issue 20
Atmos. Meas. Tech., 15, 6243–6256, 2022

Special issue: Analysis of atmospheric water vapour observations and their...

Atmos. Meas. Tech., 15, 6243–6256, 2022
Research article
28 Oct 2022
Research article | 28 Oct 2022

Estimation of refractivity uncertainties and vertical error correlations in collocated radio occultations, radiosondes, and model forecasts

Johannes K. Nielsen et al.

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Cited articles

Barnes, J.: Atomic Timekeeping and the Statistics of Precision Signal Generators, Proc. IEEE, 54, 207–220,, 1966. a
Bormann, N., Bonavita, M., Dragani, R., Eresmaa, R., Matricardi, M., and McNally, A.: Enhancing the Impact of IASI Observations through an Updated Observation-Error Covariance Matrix, Q. J. Roy. Meteor. Soc., 142, 1767–1780,, 2016. a, b
Desroziers, G., Berre, L., Chapnik, B., and Poli, P.: Diagnosis of Observation, Background and Analysis-Error Statistics in Observation Space, Q. J. Roy. Meteor. Soc., 131, 3385–3396,, 2005. a
Dirksen, R. J., Sommer, M., Immler, F. J., Hurst, D. F., Kivi, R., and Vömel, H.: Reference quality upper-air measurements: GRUAN data processing for the Vaisala RS92 radiosonde, Atmos. Meas. Tech., 7, 4463–4490,, 2014. a, b
Gleisner, H., Lauritsen, K. B., Nielsen, J. K., and Syndergaard, S.: Evaluation of the 15-year ROM SAF monthly mean GPS radio occultation climate data record, Atmos. Meas. Tech., 13, 3081–3098,, 2020. a, b
Short summary
This paper provides a new way to estimate uncertainties and error correlations. The method is a generalization of a known method called the three-cornered hat: Instead of calculating uncertainties from assumed knowledge about the observation method, uncertainties and error correlations are estimated statistically from tree independent observation series, measuring the same variable. The results are useful for future estimation of atmospheric-specific humidity from the bending of radio waves.