Assessement of the regional contribution to the air quality in Buenos Aires City due to the transport of biomass burning products in South Africa by the Low Level Jet east of the Andes

ULKE, A. G.; K. LONGO; S. FREITAS; R. HIERRO

Ciudad del Cabo

Conferencia; ATMOSPHERIC CHEMISTRY AT THE INTERFACES 2006; 2006

The low-level jet east of the Andes (South American low-level jet (SALLJ)) is a wind maximum immersed in a pole-ward warm and moist current with a cross-stream mean dimension in the mesoscale. It is a relevant feature of the South American low-level circulation and climate. The channeling of the low-level flow results from the interaction of the easterly trade winds, the Andes barrier, the South Atlantic Subtropical anticyclone and the northwestern Argentinean low. The SALLJ is episodically interrupted by cold fronts arriving in subtropical South America