Results of the studies of monsoon circulation with radon as a tracer |
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| Authors: | C Rangarajan S K Subramanian C D Eapen |
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| Institution: | (1) Air Monitoring Section, Bhabha Atomic Research Centre, Trombay, 400 085 Bombay, India;(2) Regional Meteorological Centre, 600 006 Madras, India |
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| Abstract: | Radon-222 activity levels have been measured at deck level in regions of the Arabian Sea, Indian Ocean, and Bay of Bengal during the summer monsoon periods of 1973, 1977, and 1979, as part of the Monex programme. The aim of the measurements was to find the source regions of the monsoon air and the variations in its composition under different synoptic conditions. The radon data confirm that the monsoon air is predominantly of southern-hemisphere origin, with a small continental component. The continental component, as indicated by radon values, increases at higher latitudes and seems to vary with different circulation patterns in the synoptic scale. The use of radon as a tracer in monsoon studies is thus demonstrated. |
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| Keywords: | Monsoon Radon MONEX Equator Arabian Sea Indian ocean Interhemispheric mixing |
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