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- Title
Long-Term Global Distributions of Mesoscale Variations in Atmospheric Radio Refraction Obtained from the GPS Champ Satellite Data.
- Authors
Gavrilov, N.; Manuilova, R.
- Abstract
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.
- Subjects
GLOBAL Positioning System; ATMOSPHERIC radio refractivity; TEMPORAL distribution (Quantum optics); QUASI-biennial oscillation (Meteorology); REFRACTIVE index
- Publication
Radiophysics & Quantum Electronics, 2016, Vol 59, Issue 7, p535
- ISSN
0033-8443
- Publication type
Article
- DOI
10.1007/s11141-016-9721-7