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Proceedings Paper

GPS-derived zenith tropospheric delay assimilation into numeric atmosphere model
Author(s): O. G. Khutorova; V. I. Krasnov; A. A. Jouravlev; V. E. Khutorov
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Paper Abstract

The total zenith tropospheric delay (ZTD) is an important parameter of the atmosphere and directly or indirectly reflects the weather processes and variations. This paper presents a hardware and software complex for continuous measurements and prediction of atmospheric thermodynamics and radiowaves refraction index. The main part is a network of ground-based spatially separated GPS-GLONASS receivers, which allows the remote sensing zenith tropospheric delay. GPS-Derived Zenith Tropospheric Delay shows the day to day variation and mesoscale spatial and temporal variability. Comparison with the numerical weather reanalysis fields and solar photometer measurements showed agreement with the relative deviation of less than 10%. Hardware-software complex includes the numerical model of the atmosphere on a computational cluster. A variational assimilation system was used to examine the comparative impact of including satellite derived total zenith tropospheric delay from GPS and GLONASS ground observations. Preliminary results show that the initial field of radiowaves refraction index was improved by assimilating the satellite derived ZTD.

Paper Details

Date Published: 25 November 2014
PDF: 5 pages
Proc. SPIE 9292, 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 929252 (25 November 2014); doi: 10.1117/12.2075628
Show Author Affiliations
O. G. Khutorova, Kazan Federal Univ. (Russian Federation)
V. I. Krasnov, Kazan Federal Univ. (Russian Federation)
A. A. Jouravlev, Kazan Federal Univ. (Russian Federation)
V. E. Khutorov, Kazan Federal Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 9292:
20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Oleg A. Romanovskii, Editor(s)

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