alexa Monitoring of Southwest Monsoon Using Isotope Analysis
ISSN: 2157-7617

Journal of Earth Science & Climatic Change
Open Access

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Opinion Article

Monitoring of Southwest Monsoon Using Isotope Analysis of Ground Level Vapour (Glv) in Indian Sub-Continent

Krishan G1*, Rao MS1, Kumar B2, Kumar CP1, Kumar S1, Jaiswal RK1, Rao YRS1, Tripathi S3, Kumar M4, Garg PK1 and Kumar P1
1National Institute of Hydrology, Roorkee, Uttarakhand, India
2IAEA, Vienna, Austria
3IIT-Kanpur, Uttar Pradesh, India
4Tezpur University, Tezpur, Assam, India
Corresponding Author : Krishan G National Institute of Hydrology
Roorkee, Uttarakhand, India
Tel: +91-1332-272108
E-mail: [email protected]
Received September 29, 2014; Accepted September 29, 2014; Published October 07, 2014
Citation: Krishan G, Rao MS, Kumar B, Kumar CP, Kumar S, et al. (2014) Monitoring of Southwest Monsoon Using Isotope Analysis of Ground Level Vapour (Glv) in Indian Sub-Continent. J Earth Sci Clim Change 5:224. doi: 10.4172/2157-7617.1000224
Copyright: © 2014 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.
 

Abstract

This paper presents the work carried out by National Institute of Hydrology, Roorkee to understand the role of water vapor isotopes in understanding and monitoring the southwest monsoons. For this study, a network of stations was established all over India for collection of ground level vapor (Glv). The stations were established at Roorkee in foot hills of Shiwalik (Uttarakhand), Sagar in Central India (Madhya Pradesh), Jammu in Sub-Himalayan region (Jammu & Kashmir), Kakinada in coastal region (Andhra Pradesh), Tezpur in North-Eastern region (Assam), Kanpur in Gangetic plains (Uttar Pradesh) and Manali in Himalayan region (Himachal Pradesh). A stronger isotopic depletion in the Glv with higher latitude, altitude, distance from coast and rainfall has been noticed which clearly indicate ‘latitude effect’, ‘altitude effect’, ‘continental effect’ and ‘amount effect’. The Glv received during the SW monsoon period is always depleted as compared to the Glv received during non-monsoon period in the continental stations and the extent of depletion in isotopic composition of Glv and period over this depletion continues is directly linked with monsoon strength (intensity, episodes and duration), showing a possibility of using isotopes to monitor movement of monsoon vapors.

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