An investigation on continental scales and altitute effect on isotopic (δD) composition of ground level vapour(GLV) in Indian sub-continent

Abstract

Vapours associated with monsoon are always depleted at all the stations with respect to nonmonsoon vapours, therefore, isotopes may be used to track movement of monsoon vapours and regional influx of moist vapour. The difference in isotopic composition is primarily affected by the season and source of variation. The present data pattern clearly demonstrates the continental effect (decreasing dD values from Hyderabad to Roorkee) and altitude effect in the Indian sub-continent (decreasing dD values from Roorkee to Manali) and can be used in climate studies similar to meteoric water.