Dynamical links of convective storms associated with tropospheric biennial oscillation in the Indian monsoon regime.

ABSTRACT: Tropospheric Biennial Oscillation (TBO) is characterized by a tendency for a relatively stronger monsoon to be followed by a relatively weaker one (positive) or vice-versa (negative). This study examines the distribution of different convective systems occurring during TBO phases over the Indian monsoon region. During negative TBO phase, convection is preferential over the Arabian Sea (AS), whereas during positive TBO phase, it is favoured over the land areas and Bay of Bengal (BoB). The isolated shallow convection (ISC) is dominated over the AS and Indian west coast during negative TBO years. A relatively stable environment (statically) capped with drier mid-troposphere results in abundant ISC over the AS. Broad stratiform rain (BSR) dominates over the central and east coast of India, BoB

SUBMITTER: Murali Krishna UV 

PROVIDER: S-EPMC9283390 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature