During an active (strong) phase of the Indian summer monsoon, characteristic features include an intensified Somali jet, a stronger-than-normal tropical easterly jet, and a deepened heat low with enhanced convection over peninsular India; the Tibetan anticyclone typically stays over/near Tibet or shifts westward during active spells, not eastward toward southern China.
An active monsoon phase is marked by intensification of the low-level Somali jet, strengthening of the tropical easterly jet, and negative (deepened) pressure anomalies in...
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