Water vapor transport from the Indian monsoon region: the phenomenon of Atmospheric River

Sree Raghav R.; Mrudula G.

doi:10.1117/12.2223666

Abstract

An Atmospheric/Tropospheric River (AR/TR) is a relatively narrow corridor of concentrated moisture where horizontal transport occurs in the lower atmosphere. They transport moisture from tropical regions towards the poles across the mid latitudes. Research of Atmospheric River over the Indian Monsoon region is not reported in literature. In this paper an attempt is made to examine the existence of AR in Indian Ocean and surrounding region. Meteorological parameters such as precipitable water, rainfall, air temperature and wind have been analyzed for the same. Analysis shows a clear evidence of the presence of Atmospheric River during the pre-monsoon and monsoon period. It is seen that there are variations in the origin, orientation, duration and also the formation of the river according to the vapor content in the Indian Ocean. During Elnino phase there is a pronounced transport of moisture through an Atmospheric River and also a high intensity transport occurs during monsoon period (JJA), even if moisture prevails over Indian monsoon region during other seasons also. Detailed results and extension to model forecasts will be presented in the paper.

Citation Download Citation

Sree Raghav R., Sree Raghav R., Mrudula G., Mrudula G., "Water vapor transport from the Indian monsoon region: the phenomenon of Atmospheric River", Proc. SPIE 9882, Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions VI, 98821S (3 May 2016); doi: 10.1117/12.2223666; https://doi.org/10.1117/12.2223666

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