Asymmetry of the Intertropical Convergence Zone Asymmetry of the Intertropical Convergence Zone There are a number of explanations of the asymmetry of the Intertropical Convergence Zone (ITCZ), known by sailors as The Doldrums. The ITCZ would be expected to overlie the geographic equator according to symmetric solar radiation. However, the ITCZ is mostly perennial in the northern hemisphere and in the eastern Pacific and Atlantic Oceans. It was originally explained by the asymmetrical distribution of continents. However, the distribution of land and ocean is severely asymmetric in the Indian Ocean, yet the ITCZ moves back and forth there between the southern and northern hemispheres. Continents surround
Colón Free Trade Zone Colón Free Trade Zone The Colón Free Trade Zone is a large entity near the Atlantic entrance to the Panama Canal, located in Panama dedicated to re-exporting a wide variety of merchandise to Latin America and the Caribbean. It is a free port. The Colón Free Trade Zone is the largest free port in the Americas, and second largest in the world. It started operations in 1948 and occupies about . It is divided in two large areas: one located in Colón, segregated from the city by a wall, and the other relatively new, in the harbor area, which is