A preliminary study of 'Angel' activity near Bombay
Keywords:Radar angels, reflection of radar waves from ground, atmospheric inhomogeneity
During the period March-May 1958 some radar angels were observed on the PPI display of weather radar based at Bombay. These echoes cannot possibly be attributed to the angel source, viz., reflection of radar waves from ground via atmospheric layer or inhomogeneity. It is suggested that these are angels caused by direct partial reflection from a horizontally stratified layer containing shear gravity waves.
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