Atmospheric controls on the precipitation isotopes over the Andaman Islands, Bay of Bengal.

ABSTRACT: Isotopic analysis of precipitation over the Andaman Island, Bay of Bengal was carried out for the year 2012 and 2013 in order to study the atmospheric controls on rainwater isotopic variations. The oxygen and hydrogen isotopic compositions are typical of the tropical marine sites but show significant variations depending on the ocean-atmosphere conditions; maximum depletion was observed during the tropical cyclones. The isotopic composition of rainwater seems to be controlled by the dynamical nature of the moisture rather than the individual rain events. Precipitation isotopes undergo systematic depletions in response to the organized convection occurring over a large area and are modulated by the integrated effect of convective activities. Precipitation isotopes appear to be linked with t

SUBMITTER: Chakraborty S 

PROVIDER: S-EPMC4726406 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature