During summer, they operate as localised wind maximum within the lower 1–2 km of the atmosphere, channelled by the Andes, terminating in southeastern South America. They are controlled by Amazonian wind patterns, which are influenced and controlled by patterns of insolation. They transport large amounts of moisture from the Amazon basin to the monsoonal anticyclone over Bolivia.
During summer, these localized wind phenomena occur within the lower 1–2 km of the atmosphere, guided by the Andes, and culminate in southeastern South America. They are influenced by Amazonian wind patterns that are affected by insolation patterns. These phenomena transport significant amounts of moisture from the Amazon basin to the monsoonal anticyclone over Bolivia.