Tropical Easterly Jet
The Tropical Easterly Jet (jet stream) is the meteorological term referring to an upper level easterly wind that forms in late June and continues until early September. This strong flow of air that develops in the upper atmosphere during the Asian monsoon is centred on 15°N, 50-80°E and extends from South-East Asia to Africa.
A much weaker easterly jet exists in the northeast Pacific associated with the North American Monsoon.