Climate, seasons and weather - 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. Intertropical Convergence (ITC)     Intertropical convergence. Trade Winds     Trade wind circulation. Indian Monsoon     Indian Monsoon. 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.