Application of Isotopic Signature of Atmospheric Vapor for Identifying the Source of Air Moisture-An Example from Roorkee, Uttarakhand, India
Received Date: Oct 01, 2012 / Accepted Date: Nov 19, 2012 / Published Date: Nov 22, 2012
In the present study, the isotopic signature of atmospheric vapor/precipitation is used to identify the source of air moisture at Roorkee, Uttarakhand, India. The interpretation of the isotope data of atmospheric vapor for the years 2008-09 indicates that the seasonality effect divides the entire data spectrum into three sub-units as: monsoon water vapor (δ18O<-25, δD<-126) of Bay of Bengal (BoB)/oceanic origin are the most depleted; the most enriched vapors (δ18O>-5, δD>-6) of local origin and the vapors originating due to Western Disturbances (WD) have values (δ18O ~-15, δD~-53) between these two sources. The monsoon showers are isotopically the most depleted with the highest slope (7.78) of its characteristic line followed by winter rains which are marginally enriched. The pre-monsoon showers are the most enriched rains in the year. With these systematic it can be easily differentiated between premonsoon and monsoon rains and in identifying the true monsoon rains or onset of monsoon.
Keywords: Hydrology; Water cycle; Atmospheric vapour; Stable isotopes; Arabian Sea; Bay of Bengal; Mediterranean Sea
Citation: Krishan G, Rao MS, Kumar B (2012) Application of Isotopic Signature of Atmospheric Vapor for Identifying the Source of Air Moisture-An Example from Roorkee, Uttarakhand, India. J Earth Sci Climate Change 3: 126. Doi: 10.4172/2157-7617.1000126
Copyright: ©2012 Krishan G, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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