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Long-Term Global Distributions of Mesoscale Variations in Atmospheric Radio Refraction Obtained from the GPS Champ Satellite Data

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Radiophysics and Quantum Electronics Aims and scope

We obtain average global distributions of the variances of the mesoscale variations in the atmospheric radio-refraction index (refractive index) at altitudes of 5–35 km from the data of the radio-occultation experiments performed during operation of the low-orbit GPS CHAMP satellite in the period 2001–2009. The filtering of the vertical profiles of the radio-refraction index allows one to determine the variances of the variations with vertical scales below 8 km. The latitudinal-temporal distributions of the zonal-mean variances of the index demonstrate significant interannual variations at various altitudes. Seasonal variations in the variances of radio refraction are studied. Quasi-biennial oscillations at low latitudes are revealed. Acoustic-gravity waves and turbulent and convective motions in the atmosphere can cause a spread of the radio-refraction index.

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Authors and Affiliations

  1. St. Petersburg State University, St. Petersburg, Russia

    N. M. Gavrilov & R. O. Manuilova

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  1. N. M. Gavrilov
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  2. R. O. Manuilova
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Correspondence to N. M. Gavrilov.

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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 59, No. 7, pp. 593–604, July 2016.

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Gavrilov, N.M., Manuilova, R.O. Long-Term Global Distributions of Mesoscale Variations in Atmospheric Radio Refraction Obtained from the GPS Champ Satellite Data. Radiophys Quantum El 59, 535–545 (2016). https://doi.org/10.1007/s11141-016-9721-7

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  • DOI: https://doi.org/10.1007/s11141-016-9721-7

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