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Volume 23, issue 3
Nonlin. Processes Geophys., 23, 127–136, 2016
https://doi.org/10.5194/npg-23-127-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Nonlin. Processes Geophys., 23, 127–136, 2016
https://doi.org/10.5194/npg-23-127-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 27 May 2016

Research article | 27 May 2016

An improved global zenith tropospheric delay model GZTD2 considering diurnal variations

Yibin Yao et al.

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Cited articles

Black, H. D.: An easily implemented algorithm for the tropospheric range correction, J. Geophys. Res., 83, 1825–1828, 1978.
Böhm, J. and Schuh, H. (Eds.): Atmospheric Effects in Space Geodesy, Springer Verlag, ISBN 978-3-642-36931-5, 2013.
Böhm, J., Heinkelmann, R., and Schuh, H.: Short note: a global model of pressure and temperature for geodetic applications, J. Geodesy, 81, 679–683, 2007.
Böhm, J., Möller, G., Schindelegger, M., Pain, G., and Weber, R.: Development of an improved empirical model for slant delays in the troposphere (GPT2w), GPS Solutions, 19, 433–441, 2015.
Byun, S. H. and Bar-Sever, Y. E.: A new type of troposphere zenith path delay product of the international GNSS service, J. Geodesy, 83, 1–7, 2009.
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Short summary
By considering the diurnal variations in zenith tropospheric delay (ZTD) and modifying the model expansion function, we developed an improved global empirical ZTD model GZTD2 with higher temporal and spatial resolutions compared to our previous GZTD model. The external validation testing with IGS ZTD data shows the bias and rms for GZTD2 are −0.3 and 3.9 cm respectively, indicating higher accuracy and reliability for geodesy technology compared to GZTD and other commonly used ZTD models.
By considering the diurnal variations in zenith tropospheric delay (ZTD) and modifying the model...
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