Tropospheric Phenomena Responsible for Anomalous Refraction at Radio Wavelengths

Details Tropospheric Phenomena Responsible for Anomalous Refraction at Radio Wavelengths Tropospheric Phenomena Responsible for Anomalous Refraction at Radio Wavelengths

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...251..743c&link_type=abstract

Astronomy and Astrophysics, Vol.251, NO.2/NOV(II), P. 743, 1991

Astronomy and Astrophysics

Astrophysics

5

Atmospheric Propagation, Seeing, Radiotelescopes

Scientific paper

Anomalous refraction events cause apparent displacements of radio sources by several seconds or even tens of seconds of arc. Measurements of humidity fluctuations during certain meteorological processes which frequently occur in the troposphere are used to predict the likely phase variations and angular displacements of radio sources. Phenomena studied include the dispersal of the nocturnal inversion, mixing through the inversion which caps the planetary boundary layer, convective structure in that layer and in the sub-cloud layer and the passage of cold fronts. The anomalous refraction effects estimated from these observational data are generally in agreement with published radioastronomical observations.

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