Background Seasons     This model is not to scale. The eccentricity is only 1/120 and would not be visible in the sketch. Climate Zones     Different climatic zones within the Himalayan region. ITC (Inter Tropical Convergence)     Intertropical convergence. Trade Winds     Trade wind circulation. Weather Satellites     The first launch of a second generation of Meteosat satellites was in 2002. The opportunity to analyse the atmosphere and its trace gasses was enhanced with these satellites.